WSD PVC stabilizer one pack stabilizer PVC Heat stabilizer Introduction and Safety

  WSD PVC stabilizer is one important class of plastics processing aids, the birth and development of a thermal stabilizer synchronization with PVC resin is mainly used for the processing of PVC resin, heat stabilizer and so the PVC resin, the ratio of hard and soft PVC products are a close relationship. Since the thermal energy, such as PVC stabilizer for profile  fillers, and other compatible polymers and many other materials, which is considered one of the most common polymers. Its main drawback is the differential thermal stability.
  The use of additives to change the polyvinyl chloride (PVC) and the operating characteristics of the physical appearance, but can not prevent the decomposition of the polymer. Although in the physical and chemical factors of the polymer material will always gradually destroyed, but the PVC stabilizer is called a class of substances can be effectively prevented, substantially reduced or even stop the degradation of the material. Security issues heat stabilizers have more and more people's attention. . Safety PVC stabilizers should consider three aspects, namely the safety of the use of raw materials processing, the second is the user's security, the third is the safety of waste on the environment. Processors security PVC heat stabilizer calcium stearate  measures can be liquefied by stabilizers, cream-based, granular, etc. to be addressed. For the user's safety, the molecular weight of the stabilizer may be prepared in a reactive stabilizer or to improve its resistance to pulling, but taking into account the effect of stabilizing the chemical reaction at the molecular level, the above method is not the most appropriate method, the most good way to still use high security stabilizers. In the choice of the stabilizer, the stabilization process must also be considered in the resin with a stabilizer, or stabilizing agents react with each other the resulting chemical safety.

The actual effect of PVC heat stabilizer

PVC heat stabilizer has two main preparation process, one is the calcium carbide process, main raw materials for the production of PVC heat stabilizer is calcium carbide, coal and salt; two is the ethylene method, optical brightener main raw material is oil. PVC heat stabilizer and zinc borate and optical brighteners are mainlycalcium carbide method. In the calcium carbide preparation of PVC, PVC thermal stabilizer in the salt electrolysis hydrogen chloride for the production of PVC, sodiumsurplus for the production of caustic soda, so, black iron oxide, zinc borate, antimonyflame retardant actually exists symbiosis, chlor alkali balance optical brighteners andthe entire industry two processes in different economic development cycle opticalbrightener, cost difference. Under normal circumstances, iron oxide black because ofhigher oil prices, high aluminum hydroxide and optical brightening agent ethyleneproduction cost, chromium oxide and zinc borate advantages; but once the international economy into recession, chromium oxide will be running low, calcium carbide process because of high energy consumption, such as the electricity price support, cost advantage disappears. PVC heat stabilizer and optical brighteners tocarbide PVC capacity is expanding rapidly, formed a great challenge to the ethyleneproduction of PVC, optical brighteners are many ethylene enterprises at a loss of the edge. But with the 2008 May crude oil prices continued to decline, the ethylene cost advantage obviously, electrical manufacturers stone low profit operation, or evendifficult to continue.