PVC Heat Stabilizer Technology advances and by category

PVC heat stabilizers environmental protection is imperative, zinc-based and non-toxic organic compounds based heat stabilizer is the main direction of development, but the zinc-based nontoxic heat stabilizers have a more realistic application and magnesium stearate  market space. Currently, foreign brands of high-performance zinc-based nontoxic heat stabilizers thermally stable performance close to or reach conventional levels of toxic species, has also been a lot of domestic manufacturers to carry out zinc-based nontoxic heat stabilizers in the development and application promotion, although Overall domestic product performance to be improved, but there are a lot of products to achieve industrial application and have some level of higher performance products. But
The current domestic environment-friendly heat stabilizer consumption ratio is still small, mainly because of the cost and its use is also significantly higher compared to toxic products. Seen in this light, environmentally friendly heat stabilizers future research and development, in addition to further improve performance, we must also focus on improving the cost-effective. To protect the health of our people and the living environment, improve China's PVC industry's international competitiveness in urgent need of related industries to the EU peer learning, take practical measures and steps to promote environmentally-friendly heat stabilizers in the development and promotion of the application process.
Is a kind of heat stabilizers to prevent or reduce the polymer in the course of processing by heat degradation or crosslinking, additives to extend the life of the composite material. Stabilizers commonly be divided into categories according to the main component base, fatty acid soaps, organic tin compounds, composite heat stabilizer and pure organic compounds.
1) base heat stabilizers: base with stabilizers is the "base" of the  heat stabilizer for panel lead salt of inorganic and organic acids, such stabilizer having excellent heat resistance, weather resistance and electrical insulation properties, low cost , poor transparency, toxicity, the dosage is generally 0.5% to 5.0%. (Source Global polyurethane network)
2) fatty acid-based heat stabilizer: These heat stabilizers is defined by the fatty acid composition of roots and metal ion compounds, also known as metal soap-based heat stabilizer, and its performance with the radical species and metal ions, generally an amount of 0.1% ~ 3.0%.
3) Organic tin-based heat stabilizer: These heat stabilizers may be unstable PVC and chlorine atoms in the  magnesium hydroxide molecule to form a ligand, the ligand and the organic tin carboxylate group and a chlorine atom unstable replacement. Such heat stabilizers are characterized by high stability, good transparency, heat resistance, deficiencies are more expensive.
4) composite heat stabilizer: PVC compound stabilizer is a base class, or based on metal soaps, liquid or solid, organic tin compound-based compound, wherein the metal salts of calcium - magnesium - zinc, barium - calcium - zinc, barium - zinc and barium - cadmium; commonly used organic acids such as organic acids, naphthenic acid, oleic acid, benzoic acid and salicylic acid.
5) organic heat stabilizers: These heat stabilizers can be used alone except for a few main stabilizers (mainly nitrogen-containing organic compounds), but also includes high boiling polyols and phosphite, phosphite often associated with metal stabilizers used, composite materials can improve the weather resistance, transparency, improve the surface color.