The definition of PVC stabilizer

  Definition of PVC stabilizer in a narrow sense, refers primarily to maintain high polymer plastics, rubber, synthetic fibers, such as stability and prevent its decomposition, the aging of reagents. PVC stabilizer lead salt is the most commonly used heat stabilizer, is also very effective heat stabilizer, the amount can be accounted for more than 70% PVC heat stabilizers. Advantages stabilizer: excellent thermal stability, with long-term thermal stability, good electrical insulation properties, weatherability, low prices. Stabilizer disadvantages: poor dispersibility, toxicity, with the PVC heat stabilizer  color, it is difficult to obtain a transparent product, it is difficult to obtain a vivid color products, the lack of lubricity, easy to produce sulfur contamination. PVC stabilizer to increase the solution, gel, solid, chemical stability of the mixture are called stabilizers. It can slow down the reaction, to maintain chemical balance, reduce surface tension, to prevent the light, PVC stabilizer for profile
  decomposition or oxidation decomposition effect. Source generalized chemical PVC stabilizer is very extensive, mainly based formulation designed to designers, the flexibility to use any chemicals to achieve a stable product quality purposes. Narrowly speaking, mainly refers to maintain high polymer plastics, rubber, synthetic fibers, such as stability and prevent its decomposition, the aging of reagents. In food additives, stabilizers is to make food structural stability, enhanced viscous solids of a class of food additives. Auxiliary heat stabilizer itself does not have heat stability, and only used in combination with the primary stabilizer, heat stabilizing effect will be generated, and to promote the primary stabilizing effect of the stabilizer. Secondary thermal stabilizers generally do not contain metal, which is also called a non-metallic heat stabilizers.