WSD Chemical is specificaitonal manufacturing plastic chemical in china for 10 years, WSD intenal lubricant and supply all kinds plasic chemicals ,such as Metal soaps, PVC heat stabilizers,PVC plasticizer, Impact modifier,plastic lubricant processing aid , PVC lubricant flame retardant, pigments and optical brightener.
2013年9月16日星期一
PVC stabilizers introduce some of the main
Compared with other plastics , under the same conditions in the stabilization of PVC requires more significant problem . Mainly if the PVC unstable , then it can not be processed and immediately sharp PVC processing aid and severe degradation of discoloration . PVC with suitable additives and stabilizers are varied, so that the development of the industrial sector into a special . Which accounted for the first based on barium / Fort Worth -based organometallic compounds of lead , in addition, some of the organic stabilizer also has a certain importance . For future development , to discuss a given purpose "stable compound" possibilities. Factors affecting the Stearate zinc degradation of polyvinyl chloride as a thermal decomposition activation energy minimum ( except than polyvinyl alcohol ) , so that its special stabilization is very essential . Whether fast (processing ) or slow (aging ) thermal degradation , the degradation process the most obvious feature is the presence of oxygen in the air , with automatic catalytic dehydrochlorination nature " '] . Due to the complex ions and free based chemical process , reconciliation set PVC action by gathering damage mountains . multicollinearity play double whitening agent generation and Springboard base by base and oxidation caused a color change in the Ming and mechanical properties of trace metals, particularly iron and zinc will accelerated degradation male . terminal group of the polymer additive material and the reaction is also a great shadow ...
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