What is polypropylene hollow sheet Plastic sheet extrusion machine

日期:2021/2/23 9:01:06 / 阅读: / 来源:本站

   What is Polypropylene Hollow Sheet (PP)?

  Polypropylene Hollow Sheet (PP) is extruded through the hollow sheet production line by mixing polypropylene raw material with polyethylene raw material. The cross section of the sheet is lattice shape, so it is also called lattice hollow sheet. In foreign countries, it is also called Twinwall Polypropylene Sheet, while in China, there are many names, such as plastic hollow Sheet, plastic hollow Sheet, Vantone hollow Sheet, PP hollow Sheet, and some people call it honeycomb Sheet. These are related to people's use habits. handern.com PP hollow board color is rich and diverse, the thickness is adjustable, such as "Kelei hollow board" brand PP hollow board thickness range in (2-8mm), in some foreign factories plate thickness up to 12mm. PP/PE/PC hollow profile sheet extrusion machine


  PP hollow board polypropylene manufacturing processing temperature (℃)180 ~ 240. So boiling water doesn't break it down, it's a semi-crystalline material. PP hollow board material is harder than PE and has a higher melting point. Due to the homopolymer type PP temperature above 0℃ is very brittle, so many commercial PP materials are added 1~4% ethylene random copolymer or higher ratio of ethylene content of clamp type copolymer. handern.com copolymer type PP material has a lower thermal distortion temperature (100℃), low transparency, low gloss, low rigidity, but has a stronger impact strength. The strength of PP hollow board increases with the increase of propylene content. The Vicat softening temperature of PP was 150℃. Due to the high crystallinity, the surface stiffness and scratch resistance of this material are good. PP/PE/PC hollow profile sheet extrusion machine

  PP hollow board material determines that it has non-toxic, no pollution, corrosion resistance, waterproof, shockproof performance. Some factories can be mixed according to different requirements of flame retardant master materials into flame retardant hollow board, and used in the field of high fire requirements, such as Christmas supplies, outdoor billboards in dry air; Mixed with anti - UV master material is anti - aging, anti - ultraviolet PP hollow board, and used in the construction of greenhouse roof; In China is mainly used in the factory product packaging turnover, including ordinary PP hollow board, anti-static PP hollow board (surface impedance range in 10 September 11 power between Ω), anti-static PP hollow board (surface impedance range of 6-9 in 10 square between Ω), conductive insulating plate (surface impedance range between 10 3-5 square Ω), after a series of processes can be forming anti-static hollow board turnover box, anti-static hollow BanDao card, conductive hollow board turnover box, conductive insulating BanDao card. There is no environmental stress cracking problem in PP hollow plates. Usually, PP is modified by adding glass fiber, metal additive or thermoplastic rubber. The flow rate MFR of PP hollow plates ranges from 1 to 40. The PP material with low MFR has better impact resistance but lower tensile strength. The strength of the copolymer type is higher than that of the homopolymer type for the same MFR. Due to crystallization, the shrinkage rate of PP is quite high, generally 1.8~2.5%. And the direction uniformity of the shrinkage rate is much better than PE-HD and other materials. Adding 30% glass additive can reduce the shrinkage rate to 0.7%. Homopolymer type and copolymer type PP materials have excellent resistance to hygroscopicity, acid and alkali corrosion, solubility. However, it is not resistant to aromatic hydrocarbon (such as benzene) solvents, chlorinated hydrocarbon (carbon tetrachloride) solvents, etc. PP hollow board also does not have the same oxidation resistance at high temperature as PE. Polypropylene (PP) is one of the lighter common plastics. It has excellent electrical properties and can be used as a high-frequency insulation material resistant to moisture and heat. PP/PE/PC hollow profile sheet extrusion machine handern.com

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