What are the common grades of PP plastics
- Categories:Polypropylene film News
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- Time of issue:2022-12-19 16:36
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(Summary description)Homopolymerization PP-polypropylene, referred to as PPH The homopolymer of polypropylene PP is referred to as PPH, which is a polymer of a single propylene monomer.
What are the common grades of PP plastics
(Summary description)Homopolymerization PP-polypropylene, referred to as PPH The homopolymer of polypropylene PP is referred to as PPH, which is a polymer of a single propylene monomer.
- Categories:Polypropylene film News
- Author:
- Origin:
- Time of issue:2022-12-19 16:36
- Views:
1. Homopolymerization PP-polypropylene, referred to as PPH The homopolymer of polypropylene PP is referred to as PPH, which is a polymer of a single propylene monomer. Polypropylene (PP) was commercially produced as a thermoplastic polymer in 1957 and was the first among stereoregular polymers. Its historical significance is more reflected in that it has been the fastest growing major thermoplastic, and its total national output reached 3 million tons in 2004. It has a very wide range of applications in the field of thermoplastics, especially in fibers and filaments, film extrusion, injection molding and so on.
2. PP copolymer is a copolymer of propylene monomer and ethylene monomer; according to the distribution of ethylene monomer on the molecular chain, copolymerized PP can be divided into random copolymer (PPR) and block copolymer (PPB) two kinds. PPR has good rigidity, but poor impact resistance, especially low temperature impact resistance, and poor creep resistance. PPB has good impact resistance, but creep resistance is as poor as PPR. The impact resistance and creep resistance of PPR are good.
3. CPP film-polypropylene, that is, polypropylene salivating film. It is a non-stretched, non-oriented flat film produced by melt casting and quenching. It does not go through the two processes of longitudinal stretching and transverse stretching in BOPP, and directly drools into the width of the product.
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