Structure and properties of elastomer-modified polypropylene
Elastomer modification was carried out to solve the problems of insufficient toughness,high rigidity and large size of dispersed phase during the application of multiphase copolymerized polypropylene.The effects of the type of elastomers on the properties and microstructure of polypropylene were studied.The results show that different elastomers have different effects on the properties of polypropylene.Ethylene-1-octene(POE)can obviously improve the low-temperature toughness of products,but its reduction to rigidity of polypropylene is not as good as that of propylene-ethylene copolymer(POP).POP can greatly reduce the rigidity of polypropylene,but fails to improve its low-temperature toughness.Polypropylene thermoplastic elastomer has the least effect on the properties of polypropylene.POE and POP can be used to modify polypropylene compositely to improve its properties effectively.
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