Sprayable and toughened polypropylene composition and preparation method thereof

Abstract

The invention provides a sprayable and toughened polypropylene composition, which contains the following blended components: 100 weight parts of acrylic resin, 5 to 30 weight parts of thermoplastic polyolefin elastomer, and 5 to 30 weight parts of thermoplastic elastomer graft, wherein the thermoplastic polyolefin elastomer is an ethylene-octene copolymer; and the thermoplastic elastomer graft isa styrene-butadiene-styrene block copolymer or a graft of a styrene-pentadiene-styrene block copolymer and a polar monomer, and the polar monomer is at least one of 2-vinylpyridine, 4-vinylpyridine orisomers thereof. The sprayable polypropylene composition is prepared by melt blending of the components. The polypropylene composition has good toughness and sprayable performance.

Description

technical field

[0001] The invention relates to a polypropylene composition and a preparation method thereof. In particular, it relates to a sprayable, toughened polypropylene composition and a method for its preparation. technical background

[0002] Polypropylene is a widely used thermoplastic, with rich sources of raw materials, low price, good comprehensive performance, and occupies an important position in plastics. However, the most prominent disadvantages of polypropylene are low notched impact strength and poor surface finish, which limit its application.

[0003] In the past, rubber or elastomer was mostly used to toughen polypropylene, but the rigidity, tensile strength, service temperature and processing performance of the material were greatly reduced. Since the 1980s, people have used both elastomers and inorganic particles in the modification of polypropylene in order to obtain composite materials with both toughness and rigidity. However, in these composite ...

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