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Why heat stabilizer is used in pvc products?

Why heat stabilizer is used in pvc products?


PVC thermal stabilizers are mainly used for PVC and other chlorinated polymers. It was found that the PVC plastic only at above 160 ℃ can processing forming, and it began to thermal decomposition in 120 ~ 130 ℃, release HCl gas, if not inhibit the production of HCl, decomposition and will further aggravate, this problem was the main difficulty in the development and application of PVC plastic.

The study found that if the PVC plastic in contain a small amount of salt, metal like lead the impurities such as soap, phenol, aromatic amine, does not affect the processing and application, and can have the effect of delaying its thermal decomposition to a certain extent. The above problems have been solved, which has led to the establishment and development of the research field of heat stabilizer.


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