Safety of PVC stabilizers explained
PVC composite stabilizer is widely used, consideration of its security problems have attracted more and more attention. In studying the safety of PVC stabilizers should take into account three aspects, is to use raw materials are safe, the second is consumer safety, three is waste and environmental safety. Processing of security through stabilizer liquid, paste, granule etc and measures to solve them. For user safety, stabilizers for polymer can be quantified or prepare reactive stabilizers to improve its resistance to smoking, but given the stabilizing role in chemical reactions at the molecular level, the above method is not the most appropriate way, the best way is the choice of the stabilizing agent with high safety. When choosing stabilizer, stability must also be considered in the process of resin and stabilizers, stabilizer or chemicals that react with each other to generate security.
From all kinds of stabilizers for safety, and of cadmium stabilizers will stop in the near future. But this is a slow process, one reason is that most of the cost of cadmium stabilizers used by 10%-20%, no cadmium stabilizers and PVC mixture cannot be used in a wider range. Working range is narrow, often need secondary stabilizers to make up for its weakness. Now free of cadmium stabilizers performance have reached the performance of cadmium stabilizers. Calcium zinc stabilizer developed rapidly. And in powder, paste and liquid, as well as the standard grade and nontoxic level sold second-generation calcium zinc stabilizer in food and drug packaging has replaced methyl Tin Tin and zinc base. Lead stabilizer for his spare set small, so security is not a problem when using, but there are safety problems of harmful to the environment. Lead stabilizers of low cost, high efficiency, many enterprises have used this, along with the development of non-lead PVC compound stabilizers, lead salts are being replaced by nontoxic green stabilizer. As more countries banned lead, lead stabilizers are withdrawn from the market.
In short, PVC stabilizers are in safe, drug-free development and broad prospects.