Propylene can become non-polar and polar materials to enhance adhesion and material compatibility bridge. Add a maleic anhydride
grafted polypropylene in the production of filled polypropylene, can greatly improve the affinity and polypropylene filler and
filler dispersion. It can effectively enhance the PVC flame retardant dispersion of the filler in polypropylene to improve the tensile and impact
strength of filled polypropylene. Typical applications include maleic anhydride-grafted polypropylene: plastic processing aid
compatible inorganic reinforcing material (glass fiber) and filler material (calcium carbonate, talc, etc.) and polypropylene
coupling between the polypropylene / nylon alloys improving agent of polypropylene with a polar material (metal, nylon, etc.)
adhesion. HR tear the rubber resin added can Polyethylene wax significantly increase the hardness of the rubber, aging resistance, abrasion
resistance, tear strength, tensile strength, and kneaded with an easy processing, easy and good coloring thermoplastic,
electrically insulating properties. It includes: 1, compared with one-component sealant, plastic processing aid faster overall
curing, the electronic module can be encapsulated and the stearic acid larger objects (depth greater than 7mm) 2, compared with the bicomponent
lower cost. 3, compared with epoxy resin, with excellent resistance to high temperature, anti-aging and anti-ultraviolet function.
Potting electronic modules, LED display, the pixels, backlight, and other electronic components: Typical uses.
Optical brightener
2014年4月9日星期三
2014年3月9日星期日
plastic processing aid to promote the rapid development of other products
Reportedly showed that a plasticizer having a low viscosity compared to
traditional, conventional defects can be eliminated to improve the
efficiency of the production process and also WSD Chrolinated polyethylene as a heat stabilizer and a
stabilizer formulation to reduce demand.
Other PVC additives company also announced this year, and some claim that
"green" (or at least the plant). By chemical modification of soybean oil-
based wax. The company claims that when the injection molding, its
performance is superior to the fatty acid-based lubricant, stronger
liquidity and dimensional stability. When used in the manufacture of rigid
PVC is particularly suitable, especially cadmium or zinc extrusion steady
stable PVC or tin.
Nevertheless, the additive has been selected several plants are relatively
common, although sometimes people living in common plants, such as
rapeseed, it is not a household name. High erucic acid rapeseed oil as raw
material, from growers in northern Europe. As WSD PVC plasticizer a lubricant additive or
discharge, slip, or for the polyvinyl chloride, polyolefins and other
polymers, anti-blocking agent.
Today, the majority of the additive may be regarded as new tools to create
new products and performance, rather than heat and light in order to
accelerate the process or to keep the polymer. Like a toolbox, which is
rich tools also make it with the diversity of the capabilities to produce
extraordinary role and significance in the use of different combinations.
Green bioplastics widely respected in recent years, major companies are
actively developing new green materials. By changing the development of
novel plastic additive dispersed in the molecular structure, improve or
reduce the cost of the chemical nature of the WSD chromium oxide substance. The additives to
improve the processability of PVC material, physical, chemical and other
functions, the substrate to increase the physical and chemical properties.
It is because of these companies continue to actively innovation, the PVC
industry to breathe new life.
traditional, conventional defects can be eliminated to improve the
efficiency of the production process and also WSD Chrolinated polyethylene as a heat stabilizer and a
stabilizer formulation to reduce demand.
Other PVC additives company also announced this year, and some claim that
"green" (or at least the plant). By chemical modification of soybean oil-
based wax. The company claims that when the injection molding, its
performance is superior to the fatty acid-based lubricant, stronger
liquidity and dimensional stability. When used in the manufacture of rigid
PVC is particularly suitable, especially cadmium or zinc extrusion steady
stable PVC or tin.
Nevertheless, the additive has been selected several plants are relatively
common, although sometimes people living in common plants, such as
rapeseed, it is not a household name. High erucic acid rapeseed oil as raw
material, from growers in northern Europe. As WSD PVC plasticizer a lubricant additive or
discharge, slip, or for the polyvinyl chloride, polyolefins and other
polymers, anti-blocking agent.
Today, the majority of the additive may be regarded as new tools to create
new products and performance, rather than heat and light in order to
accelerate the process or to keep the polymer. Like a toolbox, which is
rich tools also make it with the diversity of the capabilities to produce
extraordinary role and significance in the use of different combinations.
Green bioplastics widely respected in recent years, major companies are
actively developing new green materials. By changing the development of
novel plastic additive dispersed in the molecular structure, improve or
reduce the cost of the chemical nature of the WSD chromium oxide substance. The additives to
improve the processability of PVC material, physical, chemical and other
functions, the substrate to increase the physical and chemical properties.
It is because of these companies continue to actively innovation, the PVC
industry to breathe new life.
2014年3月2日星期日
PVC processing aid and the use of its characteristics
ACR acrylic esters (Acrylics) Abbreviation is generic acrylic ester series modifier , based acrylic ester polymer of copolymer . ACR is a copolymer of methyl methacrylate and acrylic acid ester as WSD Calcium stearate a white flowable powder. Depending on acrylic esters , ACR different properties and uses the proceeds of its wide range of applications. ACR as processing aids , plasticizers can significantly shorten the time to accelerate melting and promote plasticized , extruded products can make to improve the balance of torque , making it even plastics ; pair of rolled products , adding ACR to overcome the surface wrinkles , help roll WSD Plastic impact modifier package of materials , reducing air bubbles ; for vacuum forming products , adding ACR to improve melt extensibility overcome melt fracture phenomenon , easily deep drawing , and make uniform product thickness . From the looks of the article , ACR can significantly improve the surface gloss of products, to make products look smooth and delicate. The processing aids wide range of applications , in addition to rigid PVC products, the semi- rigid and soft PVC products, PVC products all have the effect of improving WSD stearic acid processing performance for applications that require good weather resistance of opaque PVC products such as pipes, construction material ( siding, doors and windows profiles, pipe fittings , blinds, rain gutters , etc. ) as well as injection molding, blow molding products.
2014年2月9日星期日
Use the principle of PVC processing aid
In industrial production, in order to improve production processes, improve product quality and yield, or to give the product of a specific application performance by adding auxiliary chemicals. Also known as the additive. However, as an important component of the product matrix, the product shape, structure, performance of large doses have a significant impact of additional material, generally not included in the scope of aid. Additives wide range of applications, usually re-dubbed the role of one pack stabilizer object names, such as polymeric additives, water treatment, metal surface treatment agent. There are some common additive selection considerations, such as: ① use of the additive requirements. Additives appearance, odor, contamination resistance, durability, electrical properties, weather resistance and so the use of direct impact products. ② processing conditions additives adaptability. ③ durability additive. Loss additive mainly through evaporation, extraction and migration pathway 3, the species must be selected appropriately according to the environment and the article processing conditions. ④ compatibility with polymer additives. Comprises mixing in impact resistance and stability of each may be a problem between them. ⑤ additive toxicity. Food and drug packaging materials, water pipe, medical equipment and other polymer materials, products, their health mainly depends on additives used. ⑥ synergistic and additive effect between proposition. If chosen appropriately, the mutually reinforcing, and can reduce the total amount of additives. The use of additives principles:
The current provisions of the international system can be divided into two, one is to allow the use of additives "exhaustive" "whitelist" lists, and the other is listed aids disabled "disabled list." After years of practice, "disabled list" to be found there is a big drawback: the lack of new substances binding. Plastic profiles Promoters
Additives a plastic profiles: impact modifiers, such as the production of plastic profiles without impact modifier, plastic profiles will be very brittle, a little collision, easily broken. Commonly chromium oxide Titanium dioxide rutile used in the production of plastic profiles impact modifier modifier consists of the following three categories: chlorinated polyethylene, polyacrylate, ethylene - vinyl acetate copolymer. Plastics Additives two sections: heat stabilizers plastic profiles are heat-sensitive plastic, so plastic profile production machining, heat stabilizers is essential. Metal heat stabilizers in PVC can absorb decomposition of HCL, it can slow down the rate of decomposition of plastics and extended decomposition time, the production of plastic profiles for the most commonly used compound lead salt, high-efficiency thermal stability, low prices. Plastics Additives three sections: the main processing aid processing aids plastic molding PVC lubricants process in order to improve the performance improvements and the development of a class of additives. Plastic profile processing temperature and decomposition temperature relatively close, poor mobility, easy to stick on the device coking, and therefore the production of plastic profiles need a certain amount of processing aid to overcome the defects of plastic profiles itself.
The current provisions of the international system can be divided into two, one is to allow the use of additives "exhaustive" "whitelist" lists, and the other is listed aids disabled "disabled list." After years of practice, "disabled list" to be found there is a big drawback: the lack of new substances binding. Plastic profiles Promoters
Additives a plastic profiles: impact modifiers, such as the production of plastic profiles without impact modifier, plastic profiles will be very brittle, a little collision, easily broken. Commonly chromium oxide Titanium dioxide rutile used in the production of plastic profiles impact modifier modifier consists of the following three categories: chlorinated polyethylene, polyacrylate, ethylene - vinyl acetate copolymer. Plastics Additives two sections: heat stabilizers plastic profiles are heat-sensitive plastic, so plastic profile production machining, heat stabilizers is essential. Metal heat stabilizers in PVC can absorb decomposition of HCL, it can slow down the rate of decomposition of plastics and extended decomposition time, the production of plastic profiles for the most commonly used compound lead salt, high-efficiency thermal stability, low prices. Plastics Additives three sections: the main processing aid processing aids plastic molding PVC lubricants process in order to improve the performance improvements and the development of a class of additives. Plastic profile processing temperature and decomposition temperature relatively close, poor mobility, easy to stick on the device coking, and therefore the production of plastic profiles need a certain amount of processing aid to overcome the defects of plastic profiles itself.
2013年10月24日星期四
PAFC first three outs coagulation process
PAFC is aluminum ( aluminum sulfate ) and iron coagulation hydrolysis , and set them on the merits of a new and efficient coagulant It is also the wastewater treatment coagulant. Well, you know ferric chloride coagulation in the first three kind of how it is played . We dibasic lead stearate take a look at three stages of the coagulation process and the formation of hydraulic conditions alum status .
Condensed phases: the liquid is injected into the raw water coagulation tank with rapid coagulation in a very short period of time the process of forming a fine alum , when the water becomes more turbid , it requires water to produce intense turbulence . Beaker experiment should be fast ( 250-300 rev / min ) was stirred for 10-30S, generally no more than 2min.
Flocculation stages: yes alum n-butyl stearate grow thicker process, requiring an appropriate degree of turbulence and sufficient residence time (10-15min), to the later observed sinking slowly gathered a large number of alum to form a clear surface layer . Beaker experiment first with 150 rev / min stirring for about 6 minutes, then 60 cycles / minute to about 4 minutes was stirred in suspension .
Settlement stage : it is carried out in the settlement pool floc settlement process , requiring slow water flow , to improve the general efficiency of the use of ramps ( plate ) settling pond , lots of thick alum perianth inclined tube ( plate ) and deposited in the glyceryl monostearate pool wall barrier end of the upper water to clarify the water , the rest of the small particle size, density alum side down slowly , while continuing to collide knot large cloud -to-late I basically unchanged . Beaker experiments should be 20-30 rev / min slow stirring for 5 minutes, then 10 minutes of static sink , than measured turbidity . PAFC take aluminum ( such as aluminum sulfate , etc. ) , iron coagulant their respective flotation operation advantageous to improve the PAC coagulation performance ; the high turbidity water and low temperature and low turbidity water purification effect is particularly evident not add alkaline additives or other coagulant .
Condensed phases: the liquid is injected into the raw water coagulation tank with rapid coagulation in a very short period of time the process of forming a fine alum , when the water becomes more turbid , it requires water to produce intense turbulence . Beaker experiment should be fast ( 250-300 rev / min ) was stirred for 10-30S, generally no more than 2min.
Flocculation stages: yes alum n-butyl stearate grow thicker process, requiring an appropriate degree of turbulence and sufficient residence time (10-15min), to the later observed sinking slowly gathered a large number of alum to form a clear surface layer . Beaker experiment first with 150 rev / min stirring for about 6 minutes, then 60 cycles / minute to about 4 minutes was stirred in suspension .
Settlement stage : it is carried out in the settlement pool floc settlement process , requiring slow water flow , to improve the general efficiency of the use of ramps ( plate ) settling pond , lots of thick alum perianth inclined tube ( plate ) and deposited in the glyceryl monostearate pool wall barrier end of the upper water to clarify the water , the rest of the small particle size, density alum side down slowly , while continuing to collide knot large cloud -to-late I basically unchanged . Beaker experiments should be 20-30 rev / min slow stirring for 5 minutes, then 10 minutes of static sink , than measured turbidity . PAFC take aluminum ( such as aluminum sulfate , etc. ) , iron coagulant their respective flotation operation advantageous to improve the PAC coagulation performance ; the high turbidity water and low temperature and low turbidity water purification effect is particularly evident not add alkaline additives or other coagulant .
2013年10月8日星期二
PVC heat stabilizers and mechanism
PVC is the first ideal structure - tail structure-CH2-CHCl-CH2-CHCl-, is quite stable. But so far the PVC synthesis method can not be like synthetic butadiene rubber, as the role of catalyst in Jigger so there are rules for orientation cis butadiene polymerization is a free radical polymerization of vinyl chloride random polymerization, in addition to its stable First - tail structure, as well as the first - the first structure-CH2
-CHCl-CHCl-CH-, tail - tail structure-CHCl-CH2-CH2-CHCl-; generate a coupling disproportionation vinyl Results CH2 = CH-CHCl
-CH2-structure and allyl chloride-CH2-CH = CH-CHCl-CH2 and so on.
Generated in the PVC synthetic allyl chloride, chlorine and tertiary carbon double bond in its molecular chain structure instability, unstable cis
Sequence is: PVC within the molecular chain allyl chloride> tertiary carbon Chlorine> terminal allyl chloride> sec chlorine. PVC processing is easily degraded but because
The PVC molecular chain structure, there vegetable stearic acid is instability factors, such modification not be stabilized, and its decomposition temperature is about 130 ℃, but
PVC resin to be processed into useful articles, molding temperature to above 190 ℃. Therefore, you must add to its junction heat stabilizer
Improved structure for stabilization. Four types of heat stabilizers heat discoloration Comment
Ideal thermal stabilizer should also absorb HCL, remove the active site, the addition of a conjugated polyene chain, from the destruction of carbenium
Sub-salt, to prevent the auto-oxidation and other functions, without generating a catalytic degradation of PVC products. The plastic processing aid actual heat stabilizer due to
Has a different function and behave in a different thermal stability characteristics, can be divided into early-type, long type, intermediate type and versatile
Four categories.
1) cadmium, zinc soap is typical of early-type heat stabilizers, can quickly absorb HCL, and Cd, Zn in the catalyst effectively carboxylic
Replace PVC chain radical unstable chlorine atoms, thereby effectively suppressing the initial degradation and coloring, but because of consumption of fast transformation products CdC12, ZnC12, but also off the HCL PVC efficient catalysts, which will lead to the aluminium distearate degradation of PVC material suddenly becomes a vicious black, so
Long-term thermal stability. 2) barium, calcium soap is a typical long-term thermal stabilizers, absorption HCL function only and therefore can not effectively suppress coloring PVC,
But the transformation products BaC12, CaC12 does not have catalytic activity, does not cause a sudden black PVC, long-term thermal stability. 3) fatty acids, organic tin are intermediate, both absorbs HCL, can effectively replace PVC with chain carboxylate unstable chlorine
Atoms, and conversion products do not have catalytic activity.
-CHCl-CHCl-CH-, tail - tail structure-CHCl-CH2-CH2-CHCl-; generate a coupling disproportionation vinyl Results CH2 = CH-CHCl
-CH2-structure and allyl chloride-CH2-CH = CH-CHCl-CH2 and so on.
Generated in the PVC synthetic allyl chloride, chlorine and tertiary carbon double bond in its molecular chain structure instability, unstable cis
Sequence is: PVC within the molecular chain allyl chloride> tertiary carbon Chlorine> terminal allyl chloride> sec chlorine. PVC processing is easily degraded but because
The PVC molecular chain structure, there vegetable stearic acid is instability factors, such modification not be stabilized, and its decomposition temperature is about 130 ℃, but
PVC resin to be processed into useful articles, molding temperature to above 190 ℃. Therefore, you must add to its junction heat stabilizer
Improved structure for stabilization. Four types of heat stabilizers heat discoloration Comment
Ideal thermal stabilizer should also absorb HCL, remove the active site, the addition of a conjugated polyene chain, from the destruction of carbenium
Sub-salt, to prevent the auto-oxidation and other functions, without generating a catalytic degradation of PVC products. The plastic processing aid actual heat stabilizer due to
Has a different function and behave in a different thermal stability characteristics, can be divided into early-type, long type, intermediate type and versatile
Four categories.
1) cadmium, zinc soap is typical of early-type heat stabilizers, can quickly absorb HCL, and Cd, Zn in the catalyst effectively carboxylic
Replace PVC chain radical unstable chlorine atoms, thereby effectively suppressing the initial degradation and coloring, but because of consumption of fast transformation products CdC12, ZnC12, but also off the HCL PVC efficient catalysts, which will lead to the aluminium distearate degradation of PVC material suddenly becomes a vicious black, so
Long-term thermal stability. 2) barium, calcium soap is a typical long-term thermal stabilizers, absorption HCL function only and therefore can not effectively suppress coloring PVC,
But the transformation products BaC12, CaC12 does not have catalytic activity, does not cause a sudden black PVC, long-term thermal stability. 3) fatty acids, organic tin are intermediate, both absorbs HCL, can effectively replace PVC with chain carboxylate unstable chlorine
Atoms, and conversion products do not have catalytic activity.
2013年9月26日星期四
Some of the major properties of calcium stearate
Calcium stearate, calcium stearate uniform nature of fine white powder. Melting point 175 ℃, density 1.035g/cm3. Dissolved in toluene , ethanol, benzene and other organic solvents , insoluble fluorescent
brightener in water . Slowly heated to 400 ℃, decomposition, combustible , the case of decomposition of stearic acid and corresponding calcium salts . Water absorption, non-toxic.
Use heat stabilizers for PVC and a variety of plastics processing lubricant , release agent . In rigid products , and the base of lead salts , lead soap can increase the gelation speed. Also used in Impact modifier for PVC food packaging, medical equipment and other requirements nontoxic soft film and equipment. Can be made of polyethylene , polypropylene, halogen absorbent to remove the residual catalyst on the adverse effects of color and stability . As a plasticizer in rubber processing , make the whole into a natural rubber and rubber softening , and almost no effect on curing . Also used as a molding of polyolefin fibers and lubricants , grease thickening agent, textile waterproofing agent, paint flatting agent , when whitening agent manufacturing plastic LP plasticizers. Also used in pencil manufacturing and pharmaceutical , perfume industry . Polyolefins polyolefin acid neutralizer and corrosion stability of the color is directly offered ; lubricating / processing aids improve the polyolefins, polyamides , styrene and rubber in the extrusion molding ( film, fiber , copying , etc. ) , and press molding processability. Release properties of the thermoplastic plastics , rubber, and thermoset articles, such as unsaturated polyester polyurethane foam
Use heat stabilizers for PVC and a variety of plastics processing lubricant , release agent . In rigid products , and the base of lead salts , lead soap can increase the gelation speed. Also used in Impact modifier for PVC food packaging, medical equipment and other requirements nontoxic soft film and equipment. Can be made of polyethylene , polypropylene, halogen absorbent to remove the residual catalyst on the adverse effects of color and stability . As a plasticizer in rubber processing , make the whole into a natural rubber and rubber softening , and almost no effect on curing . Also used as a molding of polyolefin fibers and lubricants , grease thickening agent, textile waterproofing agent, paint flatting agent , when whitening agent manufacturing plastic LP plasticizers. Also used in pencil manufacturing and pharmaceutical , perfume industry . Polyolefins polyolefin acid neutralizer and corrosion stability of the color is directly offered ; lubricating / processing aids improve the polyolefins, polyamides , styrene and rubber in the extrusion molding ( film, fiber , copying , etc. ) , and press molding processability. Release properties of the thermoplastic plastics , rubber, and thermoset articles, such as unsaturated polyester polyurethane foam
2013年9月23日星期一
polyurethane material in the pipe Application
Have great use of the polyurethane material , the pipe also has a very large application . Anticorrosive material selection determines whether the long-distance oil and gas pipelines build quality . In the long-distance oil and gas pipelines construction, anti-corrosion potassium stearate materials the basic requirements are:
( 1 ) Good electrical insulation: anti-corrosion layer between the opposite sides of a certain area of resistance should be less than 10000Ω · m2; resistant strength not less than the breakdown voltage spark detector test voltage standard.
( 2 ) resistance to cathodic stripping : coating should have a certain ability to ensure corrosion resistance to cathodic stripping layer PVC stabilizer for fittings and the substrate can be effectively and stick together.
( 3 ) sufficient mechanical strength : a certain impact strength, handling and to prevent damage caused by the soil pressure ; has good bending resistance , to ensure that the pipe construction not be damaged by bending ; has better wear , so as to prevent damage due to soil friction ; the pipe has good adhesion.
( 4 ) Good Stability: resistance to antimony oxide atmospheric aging properties ; chemical stability ; good water resistance, low water absorption ; has sufficient heat resistance ; resistance, low temperature performance, ensure its stacked pull operation and construction no cracks, no shedding.
( 5 ) simple repair of : coating should be easy to repair after damage , saving construction time.
( 6 ) anti-microbial properties .
( 1 ) Good electrical insulation: anti-corrosion layer between the opposite sides of a certain area of resistance should be less than 10000Ω · m2; resistant strength not less than the breakdown voltage spark detector test voltage standard.
( 2 ) resistance to cathodic stripping : coating should have a certain ability to ensure corrosion resistance to cathodic stripping layer PVC stabilizer for fittings and the substrate can be effectively and stick together.
( 3 ) sufficient mechanical strength : a certain impact strength, handling and to prevent damage caused by the soil pressure ; has good bending resistance , to ensure that the pipe construction not be damaged by bending ; has better wear , so as to prevent damage due to soil friction ; the pipe has good adhesion.
( 4 ) Good Stability: resistance to antimony oxide atmospheric aging properties ; chemical stability ; good water resistance, low water absorption ; has sufficient heat resistance ; resistance, low temperature performance, ensure its stacked pull operation and construction no cracks, no shedding.
( 5 ) simple repair of : coating should be easy to repair after damage , saving construction time.
( 6 ) anti-microbial properties .
2013年9月21日星期六
Aluminum sulfate in wastewater treatment coagulant or flocculant is
To clear aluminum sulfate coagulant or flocculant is , first of all , we must first understand what is flocculation , what aluminum
stearate is concrete ? What is the principle of their application ? The application in wastewater treatment is kind of how ? And what difference ?
Coagulation is the sewage in the sewage , such as adding aluminum sulfate , ferrous sulfate, coagulation agents, suspended in water to electrostatic repulsion between the colloidal particles to eliminate , and then with sulfuric acid such as aluminum or PAM ability of plastic processing aid suspension a combination of cohesion and flocculation process . What is the cohesion, which is a coagulation agent using a large amount of positively charged ions to eliminate electrostatic repulsion between the colloidal particles , the suspension coalescence . What is the wastewater flocculation , which is also the sewage dosing coagulation agent for processing, but this is no ordinary coagulation agents, but the polymer coagulation agent , the solution for the linear structure of polymers, the use of binding frame role of the small suspension bridge formed floc settling .
Aluminum sulfate in wastewater tiny particles with condensed sedimentation and adsorption effect. That is , the Metal stearate sewage treatment aluminum sulfate coagulation agents. However , aluminum sulfate do not have the effect of bridging bond , in the absence of suspended colloidal particles can not be condensed under the premise and subsidence . Only present in the sewage on the basis of the colloidal particles floc process . Thus , aluminum sulfate is coagulant.
Coagulation is the sewage in the sewage , such as adding aluminum sulfate , ferrous sulfate, coagulation agents, suspended in water to electrostatic repulsion between the colloidal particles to eliminate , and then with sulfuric acid such as aluminum or PAM ability of plastic processing aid suspension a combination of cohesion and flocculation process . What is the cohesion, which is a coagulation agent using a large amount of positively charged ions to eliminate electrostatic repulsion between the colloidal particles , the suspension coalescence . What is the wastewater flocculation , which is also the sewage dosing coagulation agent for processing, but this is no ordinary coagulation agents, but the polymer coagulation agent , the solution for the linear structure of polymers, the use of binding frame role of the small suspension bridge formed floc settling .
Aluminum sulfate in wastewater tiny particles with condensed sedimentation and adsorption effect. That is , the Metal stearate sewage treatment aluminum sulfate coagulation agents. However , aluminum sulfate do not have the effect of bridging bond , in the absence of suspended colloidal particles can not be condensed under the premise and subsidence . Only present in the sewage on the basis of the colloidal particles floc process . Thus , aluminum sulfate is coagulant.
2013年9月17日星期二
fluorescent agent Mask
There are said to be sisters children recently spent a mask effect is super good , the skin becomes special white . Deposited on a one day together , come up with the mask is also very common packaging, the PVC flame retardant inside one , or non-woven fabric , is said to try it . Day by day, the rinsing mask, I felt really white , and no one around to do the mask on the skin than obvious. Effect is really good , it really makes me this mask admiration. Friends also very pleasantly surprised to say it is only a few dollars , so inexpensive things , I feel really find the gems . Finished I'll pick up a bit and sisters out to dinner , because it is noon , outside the sun king , to the outside I found my sister 's face is so strange , ah, glowing , particularly bright ! To be honest white, but a little frightening wood there ! !
I would say , and she looked at my face , my face felt very strange ! ! !
After dinner , we hurried home. I was skeptical mask added fluorescent agent , and before my sister with a mask all night, she just felt it plainly, no attention else. Then checked the Internet
The following are network information
Adding the fluorescent whitening agent in cosmetics should generally distyrylbiphenyl class of synthetic chemicals , but the resulting fluorescent substances may be natural extracts , it may be some compound component .
Although more than half of the plant extract containing a fluorescent component , but there is little to add cosmetics pure plant fluorescent substances. Fluorescent brighteners as a dye , is a chemical composition , are often added to cosmetics , can absorb invisible ultraviolet light , and then converted to a light blue fluorescence released , and can block light blue Face showing a gray-blue , it is very smooth face . Taipei ultimate dermatology president of Taiwan Society of Aesthetic Medicine Education Committee chairman Fon-Yi Sung said : "We are yellow , blue fluorescence in the hair of ' neutralizing ' down , you can make the brightness of the face itself is greatly improved, people have a washing face on white, bright face on Cawan Wei Shi functions . " What is the harm fluorescent agent ?
Whether natural or synthetic fluorescent agents will produce certain harm to the human body , especially the synthetic fluorescent brighteners, there are certain risks , is easy to migrate to the stratum corneum , the blood , causing mutations that may cause cancer , there are also may lead to human rejection , people allergies.
Detergents on the fluorescence agent already has added ceiling , skincare , there are no requirements. After all, did not care fluorescent agent functions after entering the skin is difficult to be metabolized , so no low molecular polyethylene fluorescent agent should try to choose products more at ease.
How to detect whether a mask containing the fluorescent agent ?
Can verify the authenticity of banknotes ultraviolet light , you can also use a professional Wood's light , illumination in the dark mask, to see whether the dissemination of light blue fluorescence , basically you can determine most of the mask , of course , not all contain fluorescent the can see.
So the sisters must be careful ah , whitening products effective too fast, probably have a bad component , can cause bodily injury ! ! !
Also , another thing that makes me very chilling , even if this mask with a fluorescent agent blatant kind of thing , but it can still be seen on the packaging QS quality and safety logo, the logo should be inspected on behalf of this thing right ? But such products to the market actually has , let me chilling ah ... our quality on the market of food, supplies and even cosmetic issues , reported on TV as long as a consumer to polish his eyes always say , know how to identification, if we consumers know everything, what will be identified , it is up to the quality inspection departments is what to do with it ?
If there is no good mechanism to test , then we will have to identify themselves , to everyone's beauty and health,
I am now to popularize some of this knowledge .
Commonly used fluorescent agents pvc additive are zinc silicate , zinc sulfide cadmium, fluorescent yellow , Morin and so on. According to the chemical structure can be divided into five categories : ① stilbene , and certain synthetic fibers for cotton fiber , paper , soap and other industries , with a blue fluorescence ; ② coumarin type, with cumarone basic structure , for celluloid , polyvinyl chloride , etc., with a strong blue fluorescence ; ③ pyrazolone type , for wool, polyamide, acrylic and other fibers , a green fluorescent color ; ④ benzo oxygen and nitrogen , was used in acrylic and other fibers and polyvinyl chloride , polystyrene and other plastics , with a red fluorescence ; ⑤ phthalimide type, used for polyester, acrylic, nylon and other fibers , with a blue fluorescence.
Its main components : stilbene derivatives , such as some lipstick, in which the detergent contains a fluorescent agent. When you use the mask must pay attention to , it's best to experiment in the hand , do not directly in the face.
There is no need to rush , whitening is the result of long-term adherence , and can not bear fruit in a few days . General leather skin metabolism cycle is 28 days , to go through the complete cycle , skin whitening ingredients to complete metabolism, inhibit melanin formation , makes a good whitening effect . Use the mask for three consecutive days , there will be some effect . The best selection of botanical skin care products.
I would say , and she looked at my face , my face felt very strange ! ! !
After dinner , we hurried home. I was skeptical mask added fluorescent agent , and before my sister with a mask all night, she just felt it plainly, no attention else. Then checked the Internet
The following are network information
Adding the fluorescent whitening agent in cosmetics should generally distyrylbiphenyl class of synthetic chemicals , but the resulting fluorescent substances may be natural extracts , it may be some compound component .
Although more than half of the plant extract containing a fluorescent component , but there is little to add cosmetics pure plant fluorescent substances. Fluorescent brighteners as a dye , is a chemical composition , are often added to cosmetics , can absorb invisible ultraviolet light , and then converted to a light blue fluorescence released , and can block light blue Face showing a gray-blue , it is very smooth face . Taipei ultimate dermatology president of Taiwan Society of Aesthetic Medicine Education Committee chairman Fon-Yi Sung said : "We are yellow , blue fluorescence in the hair of ' neutralizing ' down , you can make the brightness of the face itself is greatly improved, people have a washing face on white, bright face on Cawan Wei Shi functions . " What is the harm fluorescent agent ?
Whether natural or synthetic fluorescent agents will produce certain harm to the human body , especially the synthetic fluorescent brighteners, there are certain risks , is easy to migrate to the stratum corneum , the blood , causing mutations that may cause cancer , there are also may lead to human rejection , people allergies.
Detergents on the fluorescence agent already has added ceiling , skincare , there are no requirements. After all, did not care fluorescent agent functions after entering the skin is difficult to be metabolized , so no low molecular polyethylene fluorescent agent should try to choose products more at ease.
How to detect whether a mask containing the fluorescent agent ?
Can verify the authenticity of banknotes ultraviolet light , you can also use a professional Wood's light , illumination in the dark mask, to see whether the dissemination of light blue fluorescence , basically you can determine most of the mask , of course , not all contain fluorescent the can see.
So the sisters must be careful ah , whitening products effective too fast, probably have a bad component , can cause bodily injury ! ! !
Also , another thing that makes me very chilling , even if this mask with a fluorescent agent blatant kind of thing , but it can still be seen on the packaging QS quality and safety logo, the logo should be inspected on behalf of this thing right ? But such products to the market actually has , let me chilling ah ... our quality on the market of food, supplies and even cosmetic issues , reported on TV as long as a consumer to polish his eyes always say , know how to identification, if we consumers know everything, what will be identified , it is up to the quality inspection departments is what to do with it ?
If there is no good mechanism to test , then we will have to identify themselves , to everyone's beauty and health,
I am now to popularize some of this knowledge .
Commonly used fluorescent agents pvc additive are zinc silicate , zinc sulfide cadmium, fluorescent yellow , Morin and so on. According to the chemical structure can be divided into five categories : ① stilbene , and certain synthetic fibers for cotton fiber , paper , soap and other industries , with a blue fluorescence ; ② coumarin type, with cumarone basic structure , for celluloid , polyvinyl chloride , etc., with a strong blue fluorescence ; ③ pyrazolone type , for wool, polyamide, acrylic and other fibers , a green fluorescent color ; ④ benzo oxygen and nitrogen , was used in acrylic and other fibers and polyvinyl chloride , polystyrene and other plastics , with a red fluorescence ; ⑤ phthalimide type, used for polyester, acrylic, nylon and other fibers , with a blue fluorescence.
Its main components : stilbene derivatives , such as some lipstick, in which the detergent contains a fluorescent agent. When you use the mask must pay attention to , it's best to experiment in the hand , do not directly in the face.
There is no need to rush , whitening is the result of long-term adherence , and can not bear fruit in a few days . General leather skin metabolism cycle is 28 days , to go through the complete cycle , skin whitening ingredients to complete metabolism, inhibit melanin formation , makes a good whitening effect . Use the mask for three consecutive days , there will be some effect . The best selection of botanical skin care products.
2013年9月13日星期五
PVC heat stabilizers for PVC transparent three major factors affecting
PVC heat stabilizers of PVC to a certain extent affect the transparency . PVC heat stabilizers are also PVC additives can not be missing , so no PVC heat stabilizers for PVC will lose acrylic processing a lot of practical value. So people are constantly on the PVC heat stabilizers biochemical research . Here polyvinyl chloride PVC heat stabilizers affect the transparency of the three factors , and we do a study . 1, the refractive index of the stabilizer
PVC resin, heat stabilizer and 1.52 to 1.55 of the refractive index of the visible light are the same or similar, then the better the transparency of PVC products , the transparency is low and vice versa .
2 , stabilizer molecules ( molecules ) of linear length
Heat stabilizer molecule tio2 rutile ( or molecules ) linear length is less than 400 ~ 735nm wavelength of visible light refracting fewer higher degree of transparency , whereas less transparent . 3 , a heat stabilizer in PVC , " solubility ", ie compatibility
The so-called compatibility of two or more substances refers to the mutual affinity when mixed . Good compatibility is possible to achieve dispersion of the molecular level . Thermal stabilizer in the molten state has good compatibility with PVC resin . Do not form a two -phase , that iron oxide black is no interface or the interface is not obvious, less refracted light , PVC products, higher transparency . Liquid stabilizer than the corresponding solid metal soap good compatibility in PVC , the linear molecule has a smaller length , and thus the higher the transparency of the PVC
PVC resin, heat stabilizer and 1.52 to 1.55 of the refractive index of the visible light are the same or similar, then the better the transparency of PVC products , the transparency is low and vice versa .
2 , stabilizer molecules ( molecules ) of linear length
Heat stabilizer molecule tio2 rutile ( or molecules ) linear length is less than 400 ~ 735nm wavelength of visible light refracting fewer higher degree of transparency , whereas less transparent . 3 , a heat stabilizer in PVC , " solubility ", ie compatibility
The so-called compatibility of two or more substances refers to the mutual affinity when mixed . Good compatibility is possible to achieve dispersion of the molecular level . Thermal stabilizer in the molten state has good compatibility with PVC resin . Do not form a two -phase , that iron oxide black is no interface or the interface is not obvious, less refracted light , PVC products, higher transparency . Liquid stabilizer than the corresponding solid metal soap good compatibility in PVC , the linear molecule has a smaller length , and thus the higher the transparency of the PVC
2013年9月12日星期四
introduce the characteristics of PVC impact modifier
Second, the main performance:
1, can be used as a polymeric plasticizer , and in the long-term use will not migrate to the product surface precipitation .
2, low temperature performance blends , polarity, anti-UV, anti- chemical and microbiological corrosion magnesium hydroxide flame retardant performance improved significantly .
3 , added to the PVC, ABS or PVC / ABS alloy to improve its thermal stability.
4 , the European regulatory approval for food contact industry .
5, in the PVC processing , Elvaloy ® 4924 can significantly improve the impact properties, including low-temperature impact resistance .
Third, the theoretical basis and the impact modifier advantage
PVC low-temperature impact strength are the main reasons is because a strong PVC molecules caused by intermolecular forces , because PVC strong molecular attraction between molecules makes PVC products subjected to external shock , PVC molecules difficult to produce the relative displacement , so that the impact energy can not be effectively converted to internal frictional heat , resulting in rupture of the material . Adding a plasticizer , CPE PVC because reducing the attraction between the molecules leaving the improved impact strength , but low molecular weight organic plasticizers are added when less easy to precipitate , and an anti- volatile plasticizing effect instead, the material becomes brittle and will greatly reduce the use of a large number of mechanical properties , it is difficult to use in hard products . The CPE of the polymer precipitated polymer although there is no problem , because its titanium dioxide glass transition temperature above -10 ℃ , so the low temperature impact performance is not ideal. DuPont Elvaloy 4924 is an ethylene - vinyl acetate carbonyl (E / VA / CO) copolymer , molecular weight PVC rather , is a permanent plasticizer , not precipitated , anti-migration , can significantly reduce the intermolecular force PVC , the glass transition temperature - 36 ℃, to overcome the low glass transition temperature and the CPE plasticizers easy to produce anti- plasticization defects. Not only can greatly improve the impact properties of rigid PVC and can effectively improve the weathering resistance.
Fourth, technical indicators:
Melt index (g/10min) 9
Density (g/cm3) 1.03
Tensile Strength (Psi) 1580
Elongation at break ( % ) 736
Glass transition temperature (℃) -36
Melting point (℃) 70
Solubility parameter 8.68
Five , the main application
1 , rigid PVC: improved formability , reduce subsequent vacuum forming temperature , forming speed faster , improve impact resistance ;
2, soft PVC: to increase weather resistance , low PVC profile stabilizer temperature resistance , chemical resistance and no -shift problems and improve impact resistance
3 , Footwear: with rubber handle, can increase wear and slip effect , against the soapy water and oil also increased many aspects of behavior .
4 , Other : PVC cable , PVC film, PVC leather and PVC and rubber blend products.
1, can be used as a polymeric plasticizer , and in the long-term use will not migrate to the product surface precipitation .
2, low temperature performance blends , polarity, anti-UV, anti- chemical and microbiological corrosion magnesium hydroxide flame retardant performance improved significantly .
3 , added to the PVC, ABS or PVC / ABS alloy to improve its thermal stability.
4 , the European regulatory approval for food contact industry .
5, in the PVC processing , Elvaloy ® 4924 can significantly improve the impact properties, including low-temperature impact resistance .
Third, the theoretical basis and the impact modifier advantage
PVC low-temperature impact strength are the main reasons is because a strong PVC molecules caused by intermolecular forces , because PVC strong molecular attraction between molecules makes PVC products subjected to external shock , PVC molecules difficult to produce the relative displacement , so that the impact energy can not be effectively converted to internal frictional heat , resulting in rupture of the material . Adding a plasticizer , CPE PVC because reducing the attraction between the molecules leaving the improved impact strength , but low molecular weight organic plasticizers are added when less easy to precipitate , and an anti- volatile plasticizing effect instead, the material becomes brittle and will greatly reduce the use of a large number of mechanical properties , it is difficult to use in hard products . The CPE of the polymer precipitated polymer although there is no problem , because its titanium dioxide glass transition temperature above -10 ℃ , so the low temperature impact performance is not ideal. DuPont Elvaloy 4924 is an ethylene - vinyl acetate carbonyl (E / VA / CO) copolymer , molecular weight PVC rather , is a permanent plasticizer , not precipitated , anti-migration , can significantly reduce the intermolecular force PVC , the glass transition temperature - 36 ℃, to overcome the low glass transition temperature and the CPE plasticizers easy to produce anti- plasticization defects. Not only can greatly improve the impact properties of rigid PVC and can effectively improve the weathering resistance.
Fourth, technical indicators:
Melt index (g/10min) 9
Density (g/cm3) 1.03
Tensile Strength (Psi) 1580
Elongation at break ( % ) 736
Glass transition temperature (℃) -36
Melting point (℃) 70
Solubility parameter 8.68
Five , the main application
1 , rigid PVC: improved formability , reduce subsequent vacuum forming temperature , forming speed faster , improve impact resistance ;
2, soft PVC: to increase weather resistance , low PVC profile stabilizer temperature resistance , chemical resistance and no -shift problems and improve impact resistance
3 , Footwear: with rubber handle, can increase wear and slip effect , against the soapy water and oil also increased many aspects of behavior .
4 , Other : PVC cable , PVC film, PVC leather and PVC and rubber blend products.
2013年9月10日星期二
anti-rust paint with non-toxic paint some progress
Metals and their alloys applications throughout all areas of the national economy . According to statistics, the global annual metal loss due to corrosion caused by the annual metal production capacity of up to 20% to 40 %, about earthquakes, floods, typhoons and other natural disasters, the sum of six times , resulting in huge economic losses. Meanwhile metal aluminum stearate corrosion damage of equipment and facilities will also affect the stability of production and disrupt people's lives in order and even lead to accidents resulting in personal injury. Therefore, the metal corrosion is very important [ 1-3 ] . Organic coatings against corrosion has become by far the most effective, most economical and most common method [ 4 ] , with excellent performance, ease of manufacture , low price and a number of other methods can not match advantage. And more attention to environmental protection today, the development of new anti-rust paint environmental pollution became one of the trends [ 5,6 ] .
Anti-rust paint anti-rust paint varieties and dosage , as well as with anti-rust paint binder resin interactions occurring protective properties of the coating greatly affected [ 7 ] . The traditional use of the anti-rust paint coatings containing more chromium, lead , cadmium and other pigments such as red lead, lead oxide , and zinc , barium, lead chromate , with its mixture of the coating while having good anti -corrosion , but in itself toxic , and in the production and use of the process will pollute the environment and health hazards , many countries have strict restrictions on the use [ 8 ] . Therefore, the development of non-toxic anti-rust paint and coatings efficiently has become imperative. Researchers at home and abroad have developed a phosphates , molybdates , borates and flake pigments and other non-toxic and efficient anti-rust paint [ 9-12 ] . This article describes a variety of non-toxic anti- rust paint corrosion mechanism and application progress , according to their mechanism of action divided into: ① physical rust paint ; ② chemical rust paint ; ③ both physical and chemical mechanisms of the PVC stabilizer for cable integrated anti- rust rust-preventive pigment . A physical anti-rust paint
Physical rust pigment itself more stable chemical properties , its anti-rust pigment itself instead of relying on the mechanism of chemical activity , but they have to rely on physical properties. Conventional non-toxic physical rust red iron oxide pigments , mica iron oxide, mica , glass flake , stainless steel scales, such as aluminum and aluminum paste . 1.1 Iron oxide red
Short red iron oxide red , formula Fe2O3, its crystalline phase with α-Fe2O3 ( used as pigments ) and γ-Fe2O3 ( used as a magnetic material ) , and its crystal structure due to different methods of synthesis , there are cubic , spherical , needle like type , hexagonal , diamond -and hexagonal platelets . Red iron oxide is not soluble in water , alkali and acid , only in the case of heating to dissolve in concentrated acid , insoluble in an organic solvent and an organic base material , high heat resistance , α-Fe2O3 general heat resistance up to 1200 ℃. Iron oxide red pigments are inert , iron oxide pigments in the most stable , with good weather resistance , light, water, and the role of the atmosphere is stable , and can strongly absorb ultraviolet radiation, leaving the protected goods from red iron UV damage . For rust in the system is based on its dense coating of the items covered by the physical shielding effect for 13,14 ] , while iron red rust on the substrate have the ability , the ability of polluted gases, alkali, tinting strength good hiding power . Due to low prices , is used widely in rust , but the rust resistance 1.2 micaceous iron oxide
Micaceous iron oxide , the heat stabilizer for foaming board main chemical ingredient of α-Fe2O3, is hexagonal single crystal flake , mica flake as having similar structures , so called micaceous iron oxide . Its chemical stability, non-toxic and tasteless , high temperature , UV, also has anti- chalking , rust resistance , alkali resistance , salt spray resistance , weather resistance and excellent performance [ 15 ] .
MIO MIO divided into natural and synthetic micaceous iron oxide two kinds . Natural micaceous iron oxide is made from natural minerals ( eg iron ore ) crushing, sorting , crushing derived , heat resistance up to 800 ℃ or more, contain more impurities, particle size distribution is uneven. Most of the world use natural micaceous iron oxide . The synthetic micaceous iron oxide due to high purity, particle size distribution, with a sense of three-dimensional sense of strong light , heat resistance is even higher than the natural micaceous iron oxide .
Anti-rust paint anti-rust paint varieties and dosage , as well as with anti-rust paint binder resin interactions occurring protective properties of the coating greatly affected [ 7 ] . The traditional use of the anti-rust paint coatings containing more chromium, lead , cadmium and other pigments such as red lead, lead oxide , and zinc , barium, lead chromate , with its mixture of the coating while having good anti -corrosion , but in itself toxic , and in the production and use of the process will pollute the environment and health hazards , many countries have strict restrictions on the use [ 8 ] . Therefore, the development of non-toxic anti-rust paint and coatings efficiently has become imperative. Researchers at home and abroad have developed a phosphates , molybdates , borates and flake pigments and other non-toxic and efficient anti-rust paint [ 9-12 ] . This article describes a variety of non-toxic anti- rust paint corrosion mechanism and application progress , according to their mechanism of action divided into: ① physical rust paint ; ② chemical rust paint ; ③ both physical and chemical mechanisms of the PVC stabilizer for cable integrated anti- rust rust-preventive pigment . A physical anti-rust paint
Physical rust pigment itself more stable chemical properties , its anti-rust pigment itself instead of relying on the mechanism of chemical activity , but they have to rely on physical properties. Conventional non-toxic physical rust red iron oxide pigments , mica iron oxide, mica , glass flake , stainless steel scales, such as aluminum and aluminum paste . 1.1 Iron oxide red
Short red iron oxide red , formula Fe2O3, its crystalline phase with α-Fe2O3 ( used as pigments ) and γ-Fe2O3 ( used as a magnetic material ) , and its crystal structure due to different methods of synthesis , there are cubic , spherical , needle like type , hexagonal , diamond -and hexagonal platelets . Red iron oxide is not soluble in water , alkali and acid , only in the case of heating to dissolve in concentrated acid , insoluble in an organic solvent and an organic base material , high heat resistance , α-Fe2O3 general heat resistance up to 1200 ℃. Iron oxide red pigments are inert , iron oxide pigments in the most stable , with good weather resistance , light, water, and the role of the atmosphere is stable , and can strongly absorb ultraviolet radiation, leaving the protected goods from red iron UV damage . For rust in the system is based on its dense coating of the items covered by the physical shielding effect for 13,14 ] , while iron red rust on the substrate have the ability , the ability of polluted gases, alkali, tinting strength good hiding power . Due to low prices , is used widely in rust , but the rust resistance 1.2 micaceous iron oxide
Micaceous iron oxide , the heat stabilizer for foaming board main chemical ingredient of α-Fe2O3, is hexagonal single crystal flake , mica flake as having similar structures , so called micaceous iron oxide . Its chemical stability, non-toxic and tasteless , high temperature , UV, also has anti- chalking , rust resistance , alkali resistance , salt spray resistance , weather resistance and excellent performance [ 15 ] .
MIO MIO divided into natural and synthetic micaceous iron oxide two kinds . Natural micaceous iron oxide is made from natural minerals ( eg iron ore ) crushing, sorting , crushing derived , heat resistance up to 800 ℃ or more, contain more impurities, particle size distribution is uneven. Most of the world use natural micaceous iron oxide . The synthetic micaceous iron oxide due to high purity, particle size distribution, with a sense of three-dimensional sense of strong light , heat resistance is even higher than the natural micaceous iron oxide .
2013年9月9日星期一
fluorescent color eye-catching ride
Every summer , fluorescent colors will follow the sun together into our arms, thanks to the designers of this plastic flame retardant year 's contribution , so colorful neon hues , elegant and fashionable once again return to the mainstream . Below we describe several key outfit this season , will not make you look like going to a retro disco party. Flexible use of neutral Christian Dior 's 2013 spring and summer series demonstrates the use of neon -colored high segment skills. Using fluorescent yellow petticoat dotted white porous dress. Models tour Tianyi taught us : If you potassium stearate fancy colorful stickers on a color , it would take him to work with bright neutral colors , such as ivory , peach , or lavender can be. Neon colors and neutral colors contrast looks fresh and modern, and neat cut pants to inject fluorescent colors , then a little more mature and modern personality.
Fluorescent colors make leather lighter you are looking for light summer leather single product do ? Then you can consider wearing a fluorescent color skirt, with a simple white T-shirt, this way, you are a single product the fastest way to inject neon colors . If you want to replace the polyethylene oxide September round neck gray T-shirt, they can talk to you in the fall colors are fully integrated single product .
Fluorescent colors make leather lighter you are looking for light summer leather single product do ? Then you can consider wearing a fluorescent color skirt, with a simple white T-shirt, this way, you are a single product the fastest way to inject neon colors . If you want to replace the polyethylene oxide September round neck gray T-shirt, they can talk to you in the fall colors are fully integrated single product .
2013年9月8日星期日
brighteners some broad application
Brightener (brightener / Optical whitener) is a type of fabric and can enhance the whiteness of paper and other organic compounds. Also known as optical brighteners, fluorescent brighteners . Fabric, etc. are often contained as impurities, and yellow colors , in the past are used for bleaching chemical bleaching methods , add PVC foaming board stabilizer brighteners used in the product approach. Its role is to absorb the products of invisible ultraviolet radiation into fluorescence radiation purple blue , yellow with the original two colors, a white light radiation , improve the whiteness in the sunlight . Brightener has been widely used in the textile , paper, detergent , soap , rubber, plastics, pigments and paints and so on.
Brightener in the chemical structure have a cyclic conjugated system , for example: derivatives whitening agent of stilbene , pyrazoline phenyl derivatives, benzimidazole derivatives , phenyl pyrazole derivatives , coumarin derivatives , and naphthalimide derivatives. Stilbene derivatives which yield the largest , such as 4,4 ' - bis ( 4,6 - diphenyl amine triazin -2 - amino ) stilbene -2,2' - disulfonic acid sodium salt is a the wider use of optical brighteners, whitening tradename TA. Such brighteners have been widely used in papermaking, textile , detergent and soap industries. Brightener AD is phenyl derivative of pyrazoline , scientific name 1 - ( methylsulfonyl ) -3 - (p- chlorophenyl ) pyrazoline, mainly for spinning of acrylic fiber , textiles and plastics products for the production. 4 - methyl-7 - dimethylamine coumarin naphthalene neighbors belong oxa ketones can be used for wool fabric , nylon fabric, soaps and detergents and other products.
The largest class of fluorescent Barium soap whitening agent VBL, CXT and paper liquid whitener . Generally divided into two categories brighteners , and the other is water insoluble brightener . The former can be used for paper, paint , detergent, cotton fabric whitener . The latter can be used for chemical fiber, plastics and other whitening.
Brightener in the chemical structure have a cyclic conjugated system , for example: derivatives whitening agent of stilbene , pyrazoline phenyl derivatives, benzimidazole derivatives , phenyl pyrazole derivatives , coumarin derivatives , and naphthalimide derivatives. Stilbene derivatives which yield the largest , such as 4,4 ' - bis ( 4,6 - diphenyl amine triazin -2 - amino ) stilbene -2,2' - disulfonic acid sodium salt is a the wider use of optical brighteners, whitening tradename TA. Such brighteners have been widely used in papermaking, textile , detergent and soap industries. Brightener AD is phenyl derivative of pyrazoline , scientific name 1 - ( methylsulfonyl ) -3 - (p- chlorophenyl ) pyrazoline, mainly for spinning of acrylic fiber , textiles and plastics products for the production. 4 - methyl-7 - dimethylamine coumarin naphthalene neighbors belong oxa ketones can be used for wool fabric , nylon fabric, soaps and detergents and other products.
The largest class of fluorescent Barium soap whitening agent VBL, CXT and paper liquid whitener . Generally divided into two categories brighteners , and the other is water insoluble brightener . The former can be used for paper, paint , detergent, cotton fabric whitener . The latter can be used for chemical fiber, plastics and other whitening.
2013年9月2日星期一
Fluorescent Brightener Fluorescent Material Identification
Fluorescent Brightener ] fluorescent material identification diamond ring ring care Material Identification Method One: sensory testing the quality of wedding ring .
Look diamond color [ 1 ] : gold is PVC stabilizer for panel yellow , K gold yellow , red , and white multicolor, while imitation gold products , mostly copper alloy, lighter in color . Weigh weight : Gold accounted for 19.3g/cm3 considerably higher than the proportion of imitation gold products , such as a gold ring is 5 grams, while the same size imitation gold products generally less than 3 grams.
Diamond ring ring care Material butyl stearate Identification Method Two: Check mark.
Origin should play with precious metal jewelry , manufacturers , materials and content mark, unimpressed product is substandard products. Inspection agencies such as quality problems can be detected according to Mark to give judgment . Consumers want to buy according to their own needs imprint brands and different gold gold jewelry.
Diamond ring ring care Material Identification Method three : Professional bodies have been identified .
If you need to know exactly the content of precious metal jewelry or a quality dispute should go to the jewelry quality inspection agency , the use of physical or chemical analysis methods were identified. Need to check carefully when buying jewelry inlaid stone , welding is tio2 rutile solid without fracture , glitches , such as trachoma .
Diamond ring ring care Material Identification Method four : Platinum 950 Platinum 900 difference.
Platinum abbreviated PT, we basically know PT950, generally platinum ring is used for this type of material means any material containing 95% platinum jewelry components , and the remaining 5% for other precious metals, imprint of Pt950. Relative T900 containing 90% platinum jewelry components , and the remaining 10% for other precious metals, imprint of Pt900. More hard suited diamonds PT900 , PT950 relatively pure and soft , higher purity , more preservation. Most are Pt900 platinum setting , but there are a few vendors with Pt950 production setting.
Look diamond color [ 1 ] : gold is PVC stabilizer for panel yellow , K gold yellow , red , and white multicolor, while imitation gold products , mostly copper alloy, lighter in color . Weigh weight : Gold accounted for 19.3g/cm3 considerably higher than the proportion of imitation gold products , such as a gold ring is 5 grams, while the same size imitation gold products generally less than 3 grams.
Diamond ring ring care Material butyl stearate Identification Method Two: Check mark.
Origin should play with precious metal jewelry , manufacturers , materials and content mark, unimpressed product is substandard products. Inspection agencies such as quality problems can be detected according to Mark to give judgment . Consumers want to buy according to their own needs imprint brands and different gold gold jewelry.
Diamond ring ring care Material Identification Method three : Professional bodies have been identified .
If you need to know exactly the content of precious metal jewelry or a quality dispute should go to the jewelry quality inspection agency , the use of physical or chemical analysis methods were identified. Need to check carefully when buying jewelry inlaid stone , welding is tio2 rutile solid without fracture , glitches , such as trachoma .
Diamond ring ring care Material Identification Method four : Platinum 950 Platinum 900 difference.
Platinum abbreviated PT, we basically know PT950, generally platinum ring is used for this type of material means any material containing 95% platinum jewelry components , and the remaining 5% for other precious metals, imprint of Pt950. Relative T900 containing 90% platinum jewelry components , and the remaining 10% for other precious metals, imprint of Pt900. More hard suited diamonds PT900 , PT950 relatively pure and soft , higher purity , more preservation. Most are Pt900 platinum setting , but there are a few vendors with Pt950 production setting.
2013年8月30日星期五
Metathesis reaction around the product to precipitate calcium stearate
Then filtered, washed with water, dried at about 90 ℃, derived products.
3 would 5.60g (0.1mol) of calcium oxide was suspended in 300mL, 55 ℃ hot water. Then 51.3g of chemical pure white foaming agent stearic acid was dissolved in 350mL, 70 ℃ hot water, 0.75g of diethanolamine was added, stirred and emulsified. The emulsion has been prepared on the stearic acid was gradually added within 2h suspension of calcium oxide, and sufficiently stirred to form a white insoluble material is calcium stearate was filtered off and dried to give the product.
4 direct method equipped with titanium dioxide a stirrer, a thermometer, 11:50 quantitative stearic acid and CaO, heating to melt slowly added under constant stirring catalyst H2O2, and evacuated, to control the reaction temperature 140 ~ 150 ℃, Reaction 1.5 ~ 2.0h. After completion of the reaction, the material was cooled and crushed to obtain the product. Reaction is as follows:
5 double decomposition method was dissolved in 20 times by mass of stearic acid in hot water, adding a saturated solution of caustic pvc additive soda content, at about 75 ℃ saponification reaction of a dilute solution of sodium stearate. Then the calcium chloride content of 1074kg/m3 sodium stearate was added to the solution at about 65 ℃ metathesis reaction, the product to precipitate calcium stearate. Then filtered, washed with water, dried at about 90 ℃, ie finished...
3 would 5.60g (0.1mol) of calcium oxide was suspended in 300mL, 55 ℃ hot water. Then 51.3g of chemical pure white foaming agent stearic acid was dissolved in 350mL, 70 ℃ hot water, 0.75g of diethanolamine was added, stirred and emulsified. The emulsion has been prepared on the stearic acid was gradually added within 2h suspension of calcium oxide, and sufficiently stirred to form a white insoluble material is calcium stearate was filtered off and dried to give the product.
4 direct method equipped with titanium dioxide a stirrer, a thermometer, 11:50 quantitative stearic acid and CaO, heating to melt slowly added under constant stirring catalyst H2O2, and evacuated, to control the reaction temperature 140 ~ 150 ℃, Reaction 1.5 ~ 2.0h. After completion of the reaction, the material was cooled and crushed to obtain the product. Reaction is as follows:
5 double decomposition method was dissolved in 20 times by mass of stearic acid in hot water, adding a saturated solution of caustic pvc additive soda content, at about 75 ℃ saponification reaction of a dilute solution of sodium stearate. Then the calcium chloride content of 1074kg/m3 sodium stearate was added to the solution at about 65 ℃ metathesis reaction, the product to precipitate calcium stearate. Then filtered, washed with water, dried at about 90 ℃, ie finished...
2013年8月28日星期三
On the plasticizer product price trends
Plasticizer industry chain products remained stable during the November holiday , the market changed little. Phthalic anhydride , the upstream and downstream phthalate DOP market trend uncertainty hold stocks cautious view on the outlook , and some offer to maintain the plastic lubricant state before the holiday , some temporarily offer .
Plasticizer industry chain products remained stable during the November holiday , the market changed little. Phthalic anhydride , the upstream and downstream phthalate DOP market trend uncertainty hold stocks cautious view on the outlook , and some offer to maintain the state before the holiday , some temporarily offer . Coupled with some during the potassium stearate National Day parking DOP plant has not yet restarted , some other downstream plants still in the early consumption of inventory, find goods enthusiasm northeast usually because the oil companies today morning yet adjusted Oxo shipping price , Qilu Petrochemical Company pudding octanol factory yet prices, market participants Oxo afternoon on the sidelines , in addition, some market participants have not encore , to discuss the current market cold, transactions scarce , the market temporarily stable prices . DOP prices being stable, but Acrylic processing aid subject to the following factors, watching the market sentiment is still important : First, the international oil prices rose, the mentality of the market has been boosted . Secondly, the raw materials : Acrylic prices continued to fall caused many market participants believe that there is still some room for downward adjustment octanol , so DOP lack of market confidence ; On the other hand , the domestic octanol factory is still running "deferred settlement" ( part of the market -person " insured " ) , and its final settlement price is still unpredictable. Meanwhile, many market participants have not returned after the holiday market , so DOP discuss much , little change in prices .
Plasticizer industry chain products remained stable during the November holiday , the market changed little. Phthalic anhydride , the upstream and downstream phthalate DOP market trend uncertainty hold stocks cautious view on the outlook , and some offer to maintain the state before the holiday , some temporarily offer . Coupled with some during the potassium stearate National Day parking DOP plant has not yet restarted , some other downstream plants still in the early consumption of inventory, find goods enthusiasm northeast usually because the oil companies today morning yet adjusted Oxo shipping price , Qilu Petrochemical Company pudding octanol factory yet prices, market participants Oxo afternoon on the sidelines , in addition, some market participants have not encore , to discuss the current market cold, transactions scarce , the market temporarily stable prices . DOP prices being stable, but Acrylic processing aid subject to the following factors, watching the market sentiment is still important : First, the international oil prices rose, the mentality of the market has been boosted . Secondly, the raw materials : Acrylic prices continued to fall caused many market participants believe that there is still some room for downward adjustment octanol , so DOP lack of market confidence ; On the other hand , the domestic octanol factory is still running "deferred settlement" ( part of the market -person " insured " ) , and its final settlement price is still unpredictable. Meanwhile, many market participants have not returned after the holiday market , so DOP discuss much , little change in prices .
2013年8月23日星期五
Introduction fatty acid metal salt production process
Fatty acid salt is closely related with people's lives, and its many types, such as fatty acid Stearate zinc sodium salt (soap) is commonly used in detergents, fatty acids and divalent and trivalent metal salts generated by the use of products in the industry is very extensive. This paper describes the use of fatty acid alkaline earth metal salts, preparation principles and production technology for the utilization and development of oil companies oil fine chemical products reference. 1 fatty acid salt thereof, in addition to ammonium salts of fatty acids, potassium, sodium, almost all of the epoxidized soybean oil carbon chain fatty acid metal salts are not soluble in water, very low solubility in polar solvents, in a non-polar solvent presented in the gel, only the mineral oil and grease can be dissolved. All fatty acid salts have different crystal forms. Melting point fatty acid salt is one of the important indicators of things, its melting point in the range of 1 8 ~ 2 66 ℃, with the fatty acid carbon chain length, degree of saturation and different types of salt and a larger difference. According to statistics, various fatty acid salts of calcium in the largest amount, about 60%, followed by zinc, accounting for about 20%, other about 20 percent of magnesium, lead salts, cadmium salts. The main purpose of fatty acid salts are: 1.1 for the polymer industry, such as carbon chain saturated fatty acid salts of caprylate in antimony trioxide polymers is often used as a heat stabilizer, a curing agent and catalyst; carbon chain saturated fatty acid salts hydrocarbons such as stearic acid salts can be used as the polymer material mold release agents, stabilizers and lubricants, a variety of polyester desired fat ......
2013年8月22日星期四
characteristics
Pigments usually have the following properties:
Color. Color pigment is a selective absorption of the visible light and scattering pigment,
Acrylic paint
In natural light conditions, showing yellow, red, blue, green and other colors.
Tinting strength. The ability to absorb the incident light colored pigment. Can be equivalent to the standard sample coloring pigments relative percentage.
Hiding. In the film-forming material covering the substrate surface color capability. Used to cover one square meter area contained in paint pigment expressed in grams.
Lightfastness. Under certain light pigment colors maintain its original performance. System generally use eight said eight best.
Weatherability. The pigment in a natural or artificial climatic conditions, to maintain its original performance capability. Generally use five system, said five best.
Volatiles. Mainly refers to the water, generally shall not exceed 1%.
Oil absorption. Means to form a homogeneous mass 100 g pigment refined required grams of linseed oil, with oil by a small amount of good oil absorption of the pigment particles have a specific surface area and structure.
Water soluble. Pigments containing water soluble substances, in order to account for the quality of the pigment expressed as a percentage. Paints with paint, water-soluble material which normally control in 1% or less.
Color. Color pigment is a selective absorption of the visible light and scattering pigment,
Acrylic paint
In natural light conditions, showing yellow, red, blue, green and other colors.
Tinting strength. The ability to absorb the incident light colored pigment. Can be equivalent to the standard sample coloring pigments relative percentage.
Hiding. In the film-forming material covering the substrate surface color capability. Used to cover one square meter area contained in paint pigment expressed in grams.
Lightfastness. Under certain light pigment colors maintain its original performance. System generally use eight said eight best.
Weatherability. The pigment in a natural or artificial climatic conditions, to maintain its original performance capability. Generally use five system, said five best.
Volatiles. Mainly refers to the water, generally shall not exceed 1%.
Oil absorption. Means to form a homogeneous mass 100 g pigment refined required grams of linseed oil, with oil by a small amount of good oil absorption of the pigment particles have a specific surface area and structure.
Water soluble. Pigments containing water soluble substances, in order to account for the quality of the pigment expressed as a percentage. Paints with paint, water-soluble material which normally control in 1% or less.
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