PVC Heat Stabilizer
Issue Time:2018-04-27

Why does PVC need heat stabilizer?

    PVC is one of the most productive plastic products in the world. PVC is a white powder with amorphous structure. It has a low degree of branched, and has poor stability of light and heat. Due to the poor stability of PVC processing, melting process up to 160 ℃, and decomposition of PVC when the temperature reaches 140 ℃, so the PVC resin by modification treatment of the molten plastic approach to processing production.

The effect of heat stabilizer.

    In the process of resin processing, the removal of HCl and the discoloration caused by the removal of HCl are prevented.

    During the effective use of the product, maintain sufficient thermal stability and reduce the degradation of heat, light and cause, and prolong its service life.

Classification of thermal stabilizers.

According to the function, it can be divided into three categories:

(1) main heat stabilizer (lead salt, metal soap, organic tin, etc.)

(2) auxiliary heat stabilizer (epoxides, phosphatates, polyols, etc.)

(3) compound stabilizer composed of primary and secondary stabilizers.

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