Some of the major purposes of Heat stabilizer

1, Ca-Zn composite heat stabilizer non-toxic, non-harmful heavy metals, can replace traditional lead salt heat stabilizer, safety and health, conducive to environmental protection;
2, has excellent thermal stability and excellent weather resistance, good initial color, light, anti-sulfide contamination, can WSD Metallic stearate  significantly improve the outdoor use of PVC products;
3, calcium, zinc and PVC heat stabilizer dispersion, compatibility, anti-precipitated, forming a good processing stability, has a wide processing characteristics can be improved extrusion speed and extend the production cycle;
4, has a unique role in coupling, giving a good filler dispersion, promote and package resin, improve product performance, both toughened and promote melting, can significantly improve the mechanical properties of PVC products, enhanced products compressive blasting Performance. 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%. 2) a fatty acid-based heat stabilizer: Such a thermal stabilizer is a compound consisting of a fatty acid with a metal ion root, also known as hot metal soap stabilizers, its performance and the kind of metal ions and acid WSD chromium oxide  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. Ca-Zn composite heat stabilizer in an efficient, high environmental protection is known, no smell, dispersion, mobility, stability, weather resistance, excellent transparency. At present, both plates, areas of production and processing profiles or plastics, composite stabilizer have become integral. When adding calcium zinc composite heat stabilizer, you first need to consider compatibility with the polymer is added between. If you add a composite stabilizer and polymer compounds produce a certain reaction, eroding the additive effect but will be counterproductive. Compatibility between various plastics additives is also important, not simply add a stabilizer during plastic processing, will add time to pay attention to the role of auxiliaries and additives occur between each other. Different plastics composite stabilizer for added performance, odor, stability, thermal properties and other characteristics different  WSD Polyethylene wax requirements, in operation to do to analyze specific issues, select the appropriate composite stabilizer. Also note that when you add another calcium zinc composite heat stabilizer moderation, too much or too little will not achieve the intended stabilizing effect.