pvc heat stabilizer type and main use

Mainly used in PVC stabilizers for PVC and other chlorine-containing polymers. PVC plastic was found only in the order above 160 ℃ molding, while it is in 120 ~ 130 ℃ thermal decomposition when it low molecular polyethylene  began to release the HCl gas, if it does not inhibit the generation of HCl, decomposition will further exacerbate this issue had been troubled Development and application of PVC plastic main challenges.PVC stabilizers main types of organotin stabilizers, lead salt stabilizer, a metal soap type stabilizer, stabilizer compound, epoxy compound stabilizers, phosphite stabilizers, stabilizers polyhydric alcohols, organic  titanium dioxide antimony stable agents, rare earth stabilizers, liquid stabilizers.
At present the domestic PVC stabilizer has lead salts, mainly in the whole PVC industry, PVC stabilizers overall grouped into three categories:
1 lead salt heat stabilizer: There are three salt, two salts, organic lead salts, etc.;
(2) Organic tin heat stabilizer: a methyl tin, dibutyltin octyl tin;
3 mixed metal salt stabilizer: they are calcium, potassium, magnesium, barium, zinc, cadmium, lanthanum, and hydrotalcite secondary metal and an organic stabilizer, antioxidant mixture. pvc additive  Currently on the market with calcium and zinc, barium, zinc and barium cadmium zinc three systems-based, there are three forms of such products.