PVC heat stabilizers environmental protection is imperative

PVC heat stabilizers environmental protection is imperative, zinc-based, non-toxic and organic compounds based heat stabilizer is the main direction of development, but the zinc-based nontoxic heat stabilizers promote the use of a more realistic and market space. Currently, hot zinc-based high-performance, non-toxic heat stabilizer stable performance of foreign brands have approached or reached the level of conventional Chrolinated polyethylene  toxic species, there are many domestic manufacturers are also carried out to promote the development and application of zinc-based nontoxic heat stabilizers, although the overall performance of domestic products to be improved, but there are a lot of products to achieve industrial application, and has appeared in some of the higher levels of high-performance products. But
, The current ratio of domestic consumption of environmentally friendly heat stabilizer is still small, the main reason lies in the use of toxic products, compared with the cost also significantly higher. Seen in this light, the future development of environmentally friendly heat stabilizers, in addition to further improve the performance, you should also focus on improving value for money. To protect the health and survival of our people, the environment and improve the international competitiveness of China's PVC industry and related industries to the EU in urgent need of peer learning, take practical measures and steps to promote the development and Titanium dioxide rutile  application of environmentally friendly process heat stabilizers.
Heat stabilizers are a class of polymers can prevent or reduce the heat in the course of processing and degradation or cross-linking occurs, extending the life of composite additives. Usual stabilizers can be divided into categories according to the main component of salt, fatty acid soaps, organotin compounds, heat stabilizers, and the pure compound classes of organic compounds.
1) Heat stabilizer salt: salt stabilizer is the combination of the "base" of lead salts of inorganic and organic acids, such stabilizer having excellent heat resistance, weather resistance and electrical insulating properties, low cost transparency is poor, there is a certain toxicity, dosage is generally 0.5% to 5.0%. (Source Global polyurethane network)
2) a fatty acid-based heat stabilizer: Such a thermal stabilizer is a compound consisting of a fatty acid with  Metal stearate a metal ion root, also known as hot metal soap stabilizers, its performance and the kind of metal ions and acid radicals, generally in an amount of 0.1% ~ 3.0%.
3) organotin heat stabilizers: class PVC heat stabilizer molecule with chlorine atoms to form unstable ligand and the ligand organotin carboxylate group and a chlorine atom unstable replacement. Features such heat stabilizers are high stability, good transparency, heat resistance, the downside is expensive.
4) composite heat stabilizer: PVC compound stabilizer is a metal salt or soap as a kind of liquid or solid based compound and an organic tin-based compound, wherein the metal salts are calcium - magnesium - zinc, barium - calcium - zinc, barium - zinc and barium - cadmium; common organic acids such as organic acids, naphthenic acid, oleic acid, benzoic acid and salicylic acid. 5) a thermal stabilizer compounds: Except for a few of such primary heat stabilizer stabilizer may be used alone (primarily nitrogen containing organic compound), but also a high boiling point include polyhydric alcohols and phosphites, phosphates and often stabilizer, the metal can improve the weather resistance, transparency of the composite material, to improve the surface color of the article.