Stable physical and chemical properties of PVC sheet produced by blister machine

PVC has flame retardant (flame retardant value above 40), high chemical resistance (resistant to concentrated hydrochloric acid, 90% sulfuric acid, 60% nitric acid and 20% sodium hydroxide), mechanical strength And the advantage of good electrical insulation. It has stable physical and chemical properties, is insoluble in water, alcohol, gasoline, and has low gas and water vapor leakage; at room temperature, it can withstand any concentration of hydrochloric acid, sulfuric acid below 90%, nitric acid below 50-60% and 20% below. Caustic soda solution has a certain resistance to chemical corrosion; it is quite stable to salts, but can be dissolved in organic solvents such as ethers, ketones, chlorinated aliphatic hydrocarbons and aromatic hydrocarbons.