Heat stabilizer action of PVC processing aids

Heat stabilizers are mainly used in PVC processing, a wide variety of types, mainly lead salts, metal soaps, organotin, stabilizers and composite heat stabilizers, etc., but the role of stabilizers is mainly what, below, Bangtai Petrochemical will introduce their main role to you: 

1. Absorb and neutralize the hydrogen chloride released during PVC processing, and eliminate the catalytic degradation of hydrogen chloride;

2. Protective shielding and weakening effect on ultraviolet radiation;

3. Replace active and unstable substituents, such as chlorine atoms or allyl chloride attached to PVC tertiary carbon atoms, to form a stable structure;

4. Through various forms of chemical reaction, it can block the continued growth of unsaturated bonds, inhibition /degradation and coloring;

5. Neutralize or passivate metal ions and other harmful impurities that play a catalytic role in degradation. 

The above is the introduction of the role of heat stabilizers in PVC processing aids, according to its introduction, it can better promote the efficiency of product use and reduce the occurrence of use errors.