What are the characteristics of PP rod
Publish：2024-05-18
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PP sheet extrusion sheet has the characteristics of light weight, uniform thickness, smooth surface, good heat resistance, high mechanical strength, excellent chemical stability and electrical insulation, non-toxic and so on.
PP plate is a kind of semi-crystalline material. It is harder than PE and has a higher melting point. Because the homopolymer type PP plate is very brittle when the temperature is above 0℃, many commercial PP plate materials are random copolymers with 1 to 4% ethyl or clipper copolymers with a higher ratio of ethyl. Copolymer type PP materials have a lower thermal distortion temperature (100℃), low transparency, low gloss, low rigidity, but have a stronger impact strength.
The strength of PP plate increases with the increase of ethyl content. The Vica softening temperature of PP plate is 150℃. Due to the high crystallinity, the surface stiffness and scratch resistance of this material are good. There is no environmental stress cracking problem in PP plate. Usually, PP is modified by adding glass fiber, metal additives or thermoplastic rubber.
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