2014年8月26日星期二

WSD plastic processing aid Introduction

  Processing aid  is a substance play a supporting role, typically having filter aid, clarification, adsorption, lubrication, stripping, bleaching, peeling, extraction solvent, with a fermentation nutrient and the like. Some for food, some used in manufacturing, and so on. PVC is a very special thermoplastic resin plastic processing aid  its pure decomposition, poor mobility, low impact strength, poor weather, and therefore need to add all kinds of supplementary material in the process to improve its performance. Lubricants, heat stabilizers, impact modifiers, processing aids and the like. Depending on the processing aid molecular weight, there are different functions.
  The main role of processing aids are: 1) to accelerate the Processing aid  of PVC plastics. 2) improve the rheological properties of the thermoplastic melt. 3) improve the mechanical properties of the melt under the heat elastic state. 4) improve the appearance of the quality of the products and other integrated functions. Although the addition amount of the processing aid, but the Processing aid  performance is improved PVC is very important. According to the function of the different processing aids can be divided into flux, melt rheology modifiers, lubricants and dispersing accelerator. In fact, each type of processing aids also have more than one effect. Any functionality and application results of a processing aid should depend on its chemical composition, the polymer structure, molecular weight and type of polymer matrix.


2014年8月1日星期五

WSD plastic processing aid,PVC processing aid, processing aid: The practical application of PVC processing aid

WSD plastic processing aid,PVC processing aid, processing aid: The practical application of PVC processing aid: PVC processing aid  with flame retardant ,  chemical resistance  ( resistance to  high concentrated hydrochloric acid ,  sulfuric acid  conc...

The practical application of PVC processing aid

PVC processing aid with flame retardant, chemical resistance (resistance to highconcentrated hydrochloric acid, sulfuric acid concentration, concentration of nitric acidand the concentration of sodium hydroxide), PVC processing aid machinery has the advantages of good strength and electric insulation. Impact modifier, poor thermalstability. Impact modifier in the case of no heating stabilizer, PVC processing aid thatbegins to decompose, the faster decomposition. PVC processing aid of thermal decomposition of a release of hydrogen chloride gas, make its color from white to pale yellow, red, brown, black, impact modifier and oxygen will make the PVC photo oxidative decomposition, so that the flexible PVC last fall, crisp. PVC processing aidfrom here is not difficult to understand, why some PVC plastic over time will turn yellow, brittle. heat stabilizer for pipe Word sense disambiguation plastics processing aids discrimination hasstable physical and chemical properties, insoluble in water, ethanol, gasoline additivesprocessing aids, gas, water vapor permeability and low processing aids; calcium zinc stabilizer at room temperature for any concentration of hydrochloric acid, sulfuric acid,the PVC processing aid under chemical corrosion resistance, has a certain; for salt is quite stable, but can be dissolved in ether, ketone, chlorinated aliphatic hydrocarbons and aromatic hydrocarbons and other organic solvents.

WSD plastic processing aid,PVC processing aid, processing aid: Application of processing aid

WSD plastic processing aid,PVC processing aid, processing aid: Application of processing aid: Processing aids  can be completely  self curing ,  but  commercially available  processing aids ,  for  quality and stability ,  and  the ci...

Application of processing aid

Processing aids can be completely self curing, but commercially available processing aids, for quality and stability, and the circulation of commodities of processing aidsmust add stabilizer, not only all the processing agent I met will add thickening agent, if you can get the solidification type strains, PVC processing aid conditions can try look,do a good job, with a processing aid and have a look what stabilizer state, you know,why should add stabilizer. The effect of stabilizer of stearic acid metal salt thickeningand stabilization of protein is additive has the functions of a kind used in manyproducts, can bring many benefits for polymer products. We can use plastic processing additives word sense disambiguation is mainly divided into threeMetallic stearate aspects:in polyolefin acid neutralizing a group of pipe heat stabilizers on polyolefin colorstability and contribute directly corrosion; lubrication / processing aids to improve thepolyolefin, PVC profile stabilizer, plastic, plastic additives, polyamide, styrene and rubber in the extrusion film, fiber, copying and pressing molding processability. PVC profile stabilizer andCalcium zinc stabilizer for plastic, rubber and thermosetting products, such as polyurethane foamand unsaturated polyester.