the mutual solubility of the mixed resin and plastic processing aid in

 Auxiliary plasticizer; inserted only partially crystalline molecular plasticizer amorphous regions of the polymer, the plasticizer, the plasticizer is also called non-solvent. Compatibility: the ability to dissolve the plasticizer and resin mixed with each other, and is one of the most basic requirements of plasticizer. Cohesive energy density (CED): energy per unit volume of solvent evaporation. Solubility parameters: the square root of the value of the energy of vaporization per unit volume of solvent. Cloud point (Tc): dilute homogeneous polymer solution and a plasticizer, at a temperature becomes cloudy during cooling. By measuring the cloud point can be estimated plasticizer and resin compatibility. The lower the cloud point, a plasticizer compatible with the polymer, the better. Plasticizing efficiency; plasticizing efficiency of the resin reaches a certain degree of softness is called the amount of plasticizer plasticizer. Plasticizing efficiency is a relative value, the plasticizer can be used to compare the plasticizing effect. The method used for representing plasticizing efficiency glass transition temperature (Tg) and reduce the decrease in modulus is represented. Oxidation of the polymer is the time increases with the decrease of the performance of the polymer, also known as auto-oxidation. Into the induction period, a strong oxidizing period. Antioxidants; refers to polymers by oxidation and slow the aging phenomenon can play the role of a class of chemicals. Primary antioxidant; antioxidant is considered to be the main cleaning agent, a free radical, it is through the coupling reaction (i.e., the termination reaction) to give a hydrogen atom or to prevent the damaging effects of free radicals in the polymer. Secondary antioxidants; role of antioxidants is to help decompose the peroxide oxidation of the resulting polymer. Antioxidants including an aid phosphite 2, 3 thioether antioxidants, metal deactivators metal ion deactivators; preventing the heavy metal ion induced oxidation of the resulting polymer material, often referred to as metal ions blunt agent or a metal deactivator, a metal chelating agent, also known as copper inhibitors. Stabilizer: to prevent or retard the polymer during processing, storage and use of chemical aging deterioration. Thermal stabilizers; mainly for PVC and other chlorine-containing polymers, which will not affect the processing and application, but also a certain degree of thermal decomposition of delaying the action of a class of additives. Light stabilizers; Where can inhibit or slow down the aging of optical oxygen substance called ultraviolet light stabilizer or stabilizers. Radical scavengers: a class of piperidine derivatives light stabilizer with steric effects, referred to as hindered amine WSD zinc stearate  light stabilizer (HALS) - aging or photoaging: molecular material long-term or short-term exposure to the sun set under strong fluorescence, due to absorption of UV energy, causing auto-oxidation reaction, leading to degradation of the polymer, making the products discoloration, brittleness, performance degradation, which can not be reused. This process is called oxidative aging or photoaging light flame retardants; able to increase the flame resistance of the material substance called flame retardants. They are mostly first periodic table V, compound VII and combustion speed of the group III element: refers to the length of the sample per unit time of combustion. Synergistic effect: refers to two or more with the use of additives, the total effect is greater than the sum of the individual effects when used alone. Synergy system: complex flame retardant with the use of the interaction between the flame-retardant to improve performance, the system is called a synergistic effect. Synergistic systems commonly antimony - halogen system, phosphorus halide system, phosphorus - nitrogen system. Burning speed: denotes the length of the sample per unit time of WSD Aluminum hydroxide  combustion. Burning speed is horizontal and vertical burning combustion method to measure too. Oxygen index: refers to the sample continued to burn like a candle shape, nitrogen - oxygen mixed gas stream must minimum oxygen content. External friction: polymer materials during the molding process, the polymer melt friction between the surface and processing equipment. Friction: polymer material during the molding process, the molten polymer molecules exist between friction. Lubricants; polymer to reduce friction and external friction, improved melt flow plastics, polymer material during processing to prevent the sticking of the device to ensure the surface smoothness of the added substance called lubricant. Lubricants: prior to processing the plastic ingredients, add a certain compatibility with the polymer lubricant and uniformly dispersed into the material, can reduce the friction between the resin molecules sky lubrication. External lubrication in two ways: one is in the polymer material forming the lubricant coated on the surface processing apparatus, allowed to melt at processing temperatures, and the metal surface of a "thin layer" is formed, the plastic melt and processing equipment to isolate, without adhering to the equipment, or ease of stripping off the roll; Another is compatible with the polymer is very small, it is easy to migrate from inside the polymer during processing On the surface, thereby forming WSD Calcium stearate  a spacer layer material, before the processing of the ingredients added to the plastic dispersion, and migration to the surface during processing, providing lubrication. Mold release agent: Mold and machining the workpiece remain completely chemically inert substance called a release agent. Blowing agents; make a class of blowing agents are liquid or plastic state within a certain viscosity range of rubber, plastic material forming the microporous structure.