ПВХ смола (K66-68) (SG5)

PVC Resin (SG-5) Properties: PVC resin is a white or buff powder, the apparent density of 0.40 0.60g/cm3, relatively density 1.4 g/cm3, refractive index of 1.544 (20 C), water absorption ≤ 0.5 %. Indissolve in water, alcohol, gasoline, can be swelling or dissolved in ether, ketones, chlorinated aliphatic hydrocarbons and aromatic hydrocarbons. Under 20 C, there is a strong acid-resistance, can be resistant to any concentration of hydrochloric acid, 90% or less of sulfuric acid, 50% 60% of nitric acid and 20% or less of the caustic soda solution, stability of the salts. In the flame will burn on and left flame it will be extinguished. Excellent dielectric insulation properties Applications: SG-5: Rigid plate, gramophone record, value and welding rod, PVC pipes, PVC windows, doors, etc. Name PVC RESIN SG5 appearance WHITE POWDER SPECIFICATIONs Property Specification Average polymerization 1100-1000 K Value 68-66 Viscosity(ml/g) 118-107 Impunity particle number(piece)≤ 16 Surface Density,g/ml≥ 0.48 Volatile(including water)%≤ 0.40 Residue screened:0.25mm screen hole≤ 2.0 0.063mm screen hole≥ 95 Pearleye number,grain/400c≤ 20 Absorbing volume(g) of elasticizer/100g PVC resin≥ 19 White degree (160,10minlater),%≥ 78 Rudimental chloroethylene volume,ppm≤ 5