Novel calcium / zinc composite heat stabilizer composition and use thereof

Abstract

The invention relates to a calcium / zinc composite thermal stabilizer composition with superior thermal stability and application thereof. The composition is prepared by uniformly mixing calcium soap, macromolecular zinc soap, polyatomic alcohol and an antioxidant according to the mixture ratio under the conditions of normal temperature and normal pressure. The composite stabilizer composition has good thermal stability and coloring resistance on chlorine-containing resin, has the characteristics of non-toxicity, no heavy metal pollution and so on, avoids high cost of an organic tin stabilizer and toxicity of a lead stabilizer and a cadmium stabilizer, and has certain practical value.

Description

Technical field:

[0001] The invention relates to the field of polymer materials, in particular to a calcium / zinc composite heat stabilizer composition with excellent thermal stability and its application in the fields of chlorine-containing resin extrusion, injection molding and the like. Background technique:

[0002] Chlorine-containing resins, especially rigid vinyl chloride resins, have the advantages of being difficult to burn, high mechanical properties, and low prices, and have been used in water and sewage pipes, rain gutters, window frames, etc. It is the second largest general-purpose thermoplastic after polyolefins, but vinyl chloride resins have poor stability to heat and light. Its flow temperature is 136°C, and its decomposition temperature is 140°C. The difference between the two is only 4°C, which is suitable for processing and use. It brings a lot of inconvenience, so it is essential to use various additives to improve its processing and use performance. The earl...

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