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Physical Properties Of PVC Resins

- Jan 23, 2018 -

PVC resin, the physical appearance of white powder, non-toxic, odorless. Relative density 1.35-1.46, refractive index 1.544 (20 ℃) insoluble in water, gasoline, alcohol and vinyl chloride, soluble in acetone, two chloro ethane, xylene and other solvents, chemical stability is very high, with good plasticity. In addition to a few organic solvents, at room temperature can withstand any concentration of hydrochloric acid, 90% of the following sulfuric acid, 50-60% nitric acid and 20% of the caustic soda, in addition, for the salts are also fairly stable; PVC burns on flame and emits hydrogen chloride (HCl), but out of flame, it is a kind of "self extinguishing", "nonflammable" substance , the PVC in more than 100 ℃ began to decompose and slowly release the HCL, as the temperature increased, decomposition and release HCL speed accelerated, resulting in PVC discoloration.