Poly(vinyl chloride)
Chemical properties: instinctive quality for small yellow translucent, luster. Transparency is better than polyethylene, polystyrene ene, sent in polystyrene, with different additives dosage, divided into soft and hard PVC, soft products soft and toughness, feel sticky, hard products of hardness higher than low density polyethylene, polypropylene and below, in the inflectional place will appear albino phenomenon. The relative density of 1.4 Solubility of low molecular weight is soluble in ketone, esters and chlorinated hydrocarbon solvents. High molecular weight is difficult to dissolve. Has the flame retardant (flame retardant value is more than 40), resistance to chemicals of the high (resistance to strong hydrochloric acid, the concentration of 90% of sulfuric acid, nitric acid concentration of 60% and 20% sodium hydroxide concentration), mechanical strength and electrical insulation good advantage. But the heat resistance is poorer, softening point for 80 ?? 130 ??to start decomposing change color, and separation HCI. Characteristics: this product is a white powder, according to different purposes can join different additives, present a different physical and mechanical performance, its products and mechanical performance, corrosion resistance