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PVC board is made ??of PVC as raw material, PVC sheet can be divided into soft PVC and rigid PVC. Soft PVC generally used for surface floors, ceilings and leather, but because of soft PVC containing softener, easy to become brittle and difficult to save, so its use has been limited. Hard PVC free softener, good flexibility, easy molding, hard brittle, toxic pollution, save for a long time, so it has great development and application value.
PVC sheet has high hardness and mechanical properties. And with increasing molecular weight increased, but decreased with increasing temperature. Good mechanical properties of rigid PVC board, PVC soft elastic bit weak, but will be relatively high elongation at break. PVC plate friction in general, static friction factor of 0.4-0.5, dynamic friction coefficient of 0.23. Thermal stability of PVC sheet is very poor, 140 ℃ decomposition begins, the melting temperature is 160 ℃. Low coefficient of linear expansion of PVC with flame resistance, oxidation index up to 45 or more.
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