PP polypropylene PP stick rod is a semi-crystalline materials. To be more rigid than PE and has a higher melting point. Since the type of PP homopolymer temperature is higher than the above 0 ℃ very brittle, so many commercial PP material is added 1-4% ethylene random copolymer or a higher ratio of clamp-stage ethylene content copolymer. Product Name PP rods: English Name Polypropylene, a polymer, a propylene monomer is CH2 = CH-CH3, obtained by addition polymerization of polypropylene, can be expressed as the chemical formula (C3H6) n, simplified structural formula can be expressed as [ -CH2-CH (CH3) -.] n advantage copolymer PP material has a lower heat distortion temperature (100 ℃), low transparency, low gloss, low rigidity, but have a stronger impact strength. PP ethylene content increases strength increases. PP Vicat softening temperature of 150 ℃. Due to the high degree of crystallinity, rigidity and resistance to scratches the surface of this material is very good. PP environmental stress cracking problem does not exist. Features low density, heat-resistant, no deformation, high stiffness, high surface strength, chemical stability, good electrical properties, non-toxic, uniform color, smooth surface, easy installation and maintenance, long life, easy processing, welding firm and so on. Application of drinking water pipes, seals, spray carrier, corrosion-resistant tanks, barrels, acid industry, waste water, waste gas discharge apparatus equipment, scrubbers, clean rooms, semiconductor manufacturing and related industries and the machinery, food machinery and chopping boards, plating processes.