Safety problems of compound stabilizers

- Aug 19, 2017 -

Safety problems of compound stabilizers

More and more attention has been paid to the safety of PVC composite stabilizers. PVC compound stabilizer safety from three aspects, one is the use of raw materials processing safety, safety protection is two users, three is the safety of the wastes to the environment. Security processors through the stabilizer of liquefaction, paste, granulation and other measures. For security, the user can be quantified or preparation of polymer stabilizer reactive stabilizers to improve its resistance to smoke, but considering the stabilization effect of chemical reaction on the molecular level, the method is not the most appropriate method, the best way is the stabilizer of high security. In the selection of stabilizers, the safety of the resulting chemicals must also be considered in the process of stabilization in which the resins and stabilizers, or stabilizers react with each other.

In view of the safety of various stabilizers, cadmium stabilizers will be discontinued in the near future. But one slow process is one of the reasons that most cadmium free stabilizers cost up 10%-20% when they are used, and that no cadmium stabilizers can be used in a larger range of PVC mixtures. Such as narrow processing range, often need to use auxiliary stabilizer to make up for its performance defects. Now the performance of cadmium free stabilizer has reached the performance of cadmium stabilizer. The development of calcium zinc stabilizer has been rapidly developed. In addition to powder, paste and liquid, as well as standard and non-toxic grade, the second generation of calcium zinc stabilizer has replaced zinc tin and methyl tin in food and pharmaceutical packaging.

Because of the small collection of the lead stabilizer, the safety of the stabilizer is not a problem, but there is a safety problem which is harmful to the environment. Due to the low cost and high efficiency of lead stabilizers, many enterprises use this. With the development of non lead PVC compound stabilizer, lead salt is being replaced by non-toxic environmental stabilizer. Lead stabilizers are being withdrawn from the market due to the ban on lead in several countries

In conclusion, the composite heat stabilizer is beneficial to scale production and provides a new direction for the development of lead salt heat stabilizer. Composite lead salt stabilizer is an important indicator of lead content. At present, the lead salt of compound lead salt stabilizer is usually 20%-60%, and the dosage of PVC plastic door and window profiles is 3.5 - 6 parts



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