Calcium-zinc stabilizer is synthesized with calcium salt, zinc salt, lubricant, antioxidant, etc. as the main components by a special compounding process. It can not only replace toxic stabilizers such as lead and cadmium salts and organic tin, but also has good thermal stability, light stability, transparency and tinting strength. Practice has proved that in PVC resin products, it has good processing performance and thermal stability equivalent to lead salt stabilizers, which is a good non-toxic stabilizer.
Titanium dioxide is an important inorganic chemical pigment, the main component is titanium dioxide. The production process of titanium dioxide has two process routes: sulfuric acid method and chlorination method. It has important uses in coatings, inks, papermaking, plastics and rubbers, chemical fibers, ceramics and other industries.
Oxidized polyethylene wax is an excellent new polar wax. Because the molecular chain of oxidized polyethylene wax has a certain amount of carbonyl and hydroxyl groups, the compatibility with fillers, pigments and polar resins is significantly improved. The wettability and dispersibility in polar systems are better than that of polyethylene wax, and it also has coupling properties, and its performance is comparable to that of Honeywell A-C wax in the United States.
The role of PVC lubricants is to improve the fluidity of resins and the release properties of products in plastic processing, and prevent defects due to adhesion in the machine or mold.
Lead salt stabilizers are divided into two categories: monomer and composite. In my country, lead salt stabilizers are basically used as main stabilizers, which have excellent thermal stability, strong complexing ability, excellent electrical insulation, and low price.
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