General properties PVC resin is a white or light yellow […]
General properties PVC resin is a white or light yellow powder, the relative density of 1.35-1.45. The hardness of the product can be adjusted by adding the plasticizer part number. Pure PVC water absorption and permeability are very small.
Mechanical properties Mechanical properties PVC has a higher hardness and mechanical properties. And increased with the increase of molecular weight, but decreased with the increase of temperature. Hard PVC mechanical properties, and its elastic modulus up to 1500-3000MPa. The flexibility of soft PVC 1.5-15 MPa. But the elongation at break is as high as 200% -450%. PVC friction in general, static friction factor of 0.4-0.5, dynamic friction factor dynamic friction factor of 0.23.
Thermal properties PVC thermal stability is very poor, began to decompose 140 ℃, the melting temperature of 160 ℃. PVC linear expansion coefficient, with flame retardancy, oxidation index up to 45 or more.
Electrical properties Electrical properties PVC is a better electrical properties of the polymer, but because of their greater polarity, electrical insulation than PP and PE. Dielectric constant, dielectric loss tangent and volume resistivity larger, corona resistance is not good, generally suitable for low voltage and low frequency insulation materials.
Environmental performance: PVC resistant to most inorganic acid, alkali, salt, most organic solvents. Suitable for medicine, chemical preservative materials.