Xiong Bo Plastic

PP sheet, PP plastic board - Guang Dong Xiong Bo Plastic Products

Polypropylene (PP) PP resin extruded sheet is added to the various functions of additives by extrusion, calendering, cooling, cutting and other processes and made of plastic sheet.PP board is a semi-crystalline materials.To be more rigid than PE and has a higher melting point.The type of PP homopolymer temperature above 0 ℃ and above is very brittle, so many commercial PP material is to add 1 to 4% ethylene random copolymer or a higher ratio of clamp-stage ethylene content copolymer.

PP copolymer-based material has a lower heat distortion temperature (100 ℃), low transparency, low gloss, low rigidity, but have a stronger impact strength.Strength of PP with the increase of ethylene content.Vicat softening temperature of PP 150 ℃.As a high degree of crystallinity, the surface of the material properties of stiffness and good resistance to scratches.PP environmental stress cracking problem does not exist.Usually, the use of glass fiber, metal additives or thermoplastic rubber modified PP method.MFR PP turnover ranges from 1 to 40.Low MFR of the PP material better impact properties, but the extension of lower strength.MFR for the same material, copolymer-based homopolymer type intensity ratio is higher.

The crystal, PP contraction rate is very high, generally 1.8 to 2.5%.And uniformity of shrinkage in the direction other than PE-HD material is much better.With 30% glass additive can shrink rate to 0.7%.Homopolymer and copolymer type of PP-based materials have excellent resistance to moisture absorption, resistance to acid corrosion, anti-solubility.However, it aromatic hydrocarbons (eg benzene) solvents, chlorinated hydrocarbons (carbon tetrachloride) solvents is not resistance.PP did not like PE still has a high temperature oxidation resistance