Calcium And Zinc Stabilizer Is A Good Non-toxic Stabilizer
Calcium and zinc stabilizers are usually divided into: solid calcium and zinc stabilizer and liquid calcium zinc stabilizer.
Calcium and zinc stabilizer from calcium salt, zinc salt, lubricants, antioxidants as the main component of the use of special composite process and synthesis. It not only can replace lead and cadmium salts and organic tin and other toxic stabilizers, but also has a very good thermal stability, light stability and transparency and color strength. Practice has proved that in the PVC resin products, processing performance, thermal stability is equivalent to lead salt stabilizer, is a good non-toxic stabilizer.
CZ-1, CZ-2, CZ-3, etc., for the use of pipe, profile, pipe, sheet, injection, blown film, cable and other plastic products, respectively, Ca-Zn Stabilizer according to different uses, calcium and zinc compound stabilizer The
1, packaging: outside the paper bag lined with thin film bag, net weight 25kg.
2, storage and transportation: storage and transportation by non-dangerous goods, store cool and dry place.
Calcium and zinc stabilizers are complexes of calcium and zinc organic salts, phosphites, polyols, antioxidants and solvents. Liquid calcium zinc stabilizer and resin and plasticizer compatibility, transparency is good, not easy to precipitate, the amount of less, easy to use.
Solid calcium-zinc soap stabilizer is mainly stearic acid soap, Ca-Zn Stabilizer followed by lauric acid soap and oleic acid soap. The product is characterized by good lubricity, do not reduce the softening point of PVC hard products for rigid PVC pipe and profile processing.
And the use of micro-emulsification technology and processing products to overcome the shortcomings of people focus on improving from two aspects: to improve the initial coloring, with a sufficient amount of zinc soap, the use of chelating agent to zinc chloride harmless, this As a combination of high zinc: to reduce the amount of zinc soap to inhibit zinc burning, with additives to change the initial coloring, this approach has become a low zinc with. , Not only in the wide application of soft products, Ca-Zn Stabilizer the thermal stability and transparency are recognized, but also successfully applied to hard products processing. In order to make the calcium / zinc system both to maintain a small initial coloring, but also to inhibit zinc burning.
General lead salt attached to the surface of PVC particles, its role is equivalent to hinder the integration of PVC particles, will significantly delay the plasticization, reduce the friction between PVC particles to reduce the shear within the PVC, the processing equipment to bear the load is low. The amount of lead salt, lead salt particles smaller, the more obvious the role of the next.
Traditional environmental products such as calcium and zinc stabilizer, in the plasticization process, due to the larger electronegativity, polar groups and PVC resin acute node has a certain affinity to form a bond to a strong bond, thereby weakening or Eliminating the PVC layer of the ion bond of the attraction of PVC is intertwined with each other easy to spread the chain between the molecular groups easy to facilitate the promotion of PVC resin plasticization. This led to the resin in the feeding section of plastic, the melt pressure increased rapidly, Ca-Zn Stabilizer the melt viscosity decreased, the temperature increased, plasticizing temperature decreased. Also made of resin transition plasticization.
And because the traditional PVC processing equipment is the use of lead salt stabilizer processing services, even by adding a sufficient amount of lubricant can not be enough time to prevent further plasticization of the resin, but also destroyed the original lubrication balance, The use of late PVC melt in the homogenization section of the consumption of a large number of heat stabilizers at the same time, Ca-Zn Stabilizer they can not achieve the desired viscosity and elasticity, to meet the needs of rigid PVC production. This is the calcium and zinc stabilizer in the alternative lead salt must be resolved.