2014年8月1日星期五

The practical application of PVC processing aid

PVC processing aid with flame retardant, chemical resistance (resistance to highconcentrated hydrochloric acid, sulfuric acid concentration, concentration of nitric acidand the concentration of sodium hydroxide), PVC processing aid machinery has the advantages of good strength and electric insulation. Impact modifier, poor thermalstability. Impact modifier in the case of no heating stabilizer, PVC processing aid thatbegins to decompose, the faster decomposition. PVC processing aid of thermal decomposition of a release of hydrogen chloride gas, make its color from white to pale yellow, red, brown, black, impact modifier and oxygen will make the PVC photo oxidative decomposition, so that the flexible PVC last fall, crisp. PVC processing aidfrom here is not difficult to understand, why some PVC plastic over time will turn yellow, brittle. heat stabilizer for pipe Word sense disambiguation plastics processing aids discrimination hasstable physical and chemical properties, insoluble in water, ethanol, gasoline additivesprocessing aids, gas, water vapor permeability and low processing aids; calcium zinc stabilizer at room temperature for any concentration of hydrochloric acid, sulfuric acid,the PVC processing aid under chemical corrosion resistance, has a certain; for salt is quite stable, but can be dissolved in ether, ketone, chlorinated aliphatic hydrocarbons and aromatic hydrocarbons and other organic solvents.

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