Common grade of PP polypropylene in plastic identification

Homopolymer PP- polypropylene [size=-1]Homo-polymer polypropylene, referred to as PPH polypropylene PP homopolymer, referred to as PPH, is a single propylene monomer polymer. Polypropylene (PP), as a thermoplastic polymer, was first produced in 1957, and is the first of its kind in structured polymers. Its historical significance is reflected in that it has been the fastest growing major thermoplastics, in 2004 its total output reached 3 million tons. It has a very wide range of applications in the field of thermoplastic plastics, especially in the fields of fiber and filament, film extrusion, injection molding and so on.
Two, Polypropylene Copolymer, PP copolymer, referred to as PPC, is a copolymer of propylene monomer and ethylene monomer; according to ethylene monomer distribution in chain, copolymerization of PP can be divided into random copolymer (PPR) and block copolymer (PPB) two. PPH good rigidity, but the impact is not good, especially low temperature impact resistance is not good, poor creep resistance. PPB has good impact resistance, but its creep resistance is the same as that of PPH. PPR has good impact resistance and creep resistance.
Three, CPP membrane polypropylene CPP is "Casting Polypropylene" referred to, namely polypropylene cast film. By melt quench salivation, production of a non stretch, non directional flat film. It does not pass through the longitudinal tensile BOPP and two transverse tensile process, directly into the product width ptyalism.
Engineering polypropylene fiber
Polypropylene monofilament fiber and polypropylene mesh fiber.
Polypropylene mesh with modified polypropylene fiber as raw material, extrusion, drawing, web forming, surface modification, short process as high strength monofilament mesh bundle or organic fiber, its inherent resistance to acid, alkali resistance, low thermal conductivity, has extremely stable chemical properties. To effectively control the concrete or mortar concrete (mortar) micro cracks caused by solid plastic shrinkage, dry shrinkage, temperature changes and other factors, prevent and restrain the formation and development of cracks, greatly improve concrete cracking resistance and impermeability, impact resistance and aseismatic capability, can be widely used in underground engineering waterproof. Industrial and civil engineering roofing, wall, floor, cistern, basement, and road and bridge engineering. It is a new ideal material for crack resistance, seepage prevention, abrasion resistance and heat preservation