Effect on the performance of PVC heat stabilizers how much you know

A series of complex organic PVC heat stabilizers have begun to enter the market and gradually replaced the traditional heavy metal stabilizers.
PVC heat stabilizers are indispensable in the process additives , awareness of their concerns with human health and  iron oxide black the surrounding environment is gradually increased, the world has promulgated a series of measures to limit the use of heavy metal heat stabilizers .
Outside the industry generally believe that awareness of PVC heat stabilizers environmental protection has become an irreversible trend, in the process of environmental protection PVC heat stabilizer , research and development , non-toxic , non-polluting , complex , and efficient heat stabilizers have been more widely application .
PVC resin having a self- HCL released catalytic or structural instability polyolefin produced PVC resin capable of addition reflection to prevent or reduce the decomposition of PVC resin . General characteristics of the formulations selected thermal stabilizer , features and requirements of the article to be considered. Here are some characteristics of people stabilizer :
1 lead salt stabilizer is mainly used in hard articles . Lead salt stabilizer has good heat stabilizers , excellent electrical properties , low cost and so on. However, its toxicity, easily contaminated products , can only produce opaque products. In recent years, large  iron oxide yellow numbers of composite stabilizer , stabilizer dangerous single component has been replaced . Features composite stabilizer is a dedicated and strong, little pollution , the advantages of simple ingredients and processing enterprises . But because no uniform standard , so the difference between the various composite stabilizer great .
2 barium cadmium -based stabilizers is a better performance heat stabilizers . PVC plastic sheeting used in wider . Usually barium cadmium and zinc and organic phosphite antioxidants and use .
3 . Calcium zinc stabilizers can be used as non-toxic stabilizers used in food packaging and medical devices, pharmaceutical packaging , but its stability is relatively low education , calcium -based stabilizers large amount of poor transparency , easy to bloom . Calcium zinc stabilizers usually used polyols and antioxidants to improve its performance, the PVC heat stabilizer  country has recently been Ca-Zn composite stabilizer for rigid pipes appear.
4 good thermal properties of the organic tin-based stabilizers , are preferred species for the transparent rigid PVC products , particularly octyl tin packaging products become almost indispensable toxic stabilizers .