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Polypropylene composition and preparation method thereof

A technology for polypropylene composition and polypropylene copolymerization, which is applied in the field of polypropylene composition and its preparation, and can solve the problems of inability to inhibit crystallization of the composition and non-disclosure

Active Publication Date: 2020-06-09
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no disclosure of the effect of the content of ethylene-propylene rubber in the heterophasic propylene copolymer on the performance of the composition, and the addition of high-density polyethylene cannot inhibit the crystallization of the composition

Method used

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  • Polypropylene composition and preparation method thereof
  • Polypropylene composition and preparation method thereof
  • Polypropylene composition and preparation method thereof

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0028] The raw material sources used in the present invention are as follows:

[0029] Polypropylene A: Copolymerized polypropylene with a weight average molecular weight of about 67000~70000g / mol, a molecular weight distribution of 3.5, and a mass percentage of ethylene-propylene rubber in the copolymerized polypropylene resin of 9.5%;

[0030] Polypropylene B: Copolymerized polypropylene, with a weight average molecular weight of about 70000~73000g / mol, a molecular weight distribution of 4.0, an...

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Abstract

The invention discloses a polypropylene composition. A resin matrix is composed of co-polypropylene and branched polyethylene with special parameters, so that the resin matrix has a low crystallization tendency, and the spraying adhesive force of the surface of the resin matrix is improved. A bimodal distribution state elastomer POE is further adopted, so that the appearance state after molding can be improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene (PP) material, as one of the five general-purpose plastics, has the advantages of low density, low price, and convenient molding, which is in line with the current development trend of green, environmental protection and lightweight in the automotive industry. After modification, the overall comprehensive performance of polypropylene material is improved, and it is widely used in exterior plastic parts such as bumpers, fenders, wheel eyebrows, and side skirts of automobiles. With the rapid development of the automobile industry, consumers have gradually increased their requirements for car shape and body color. The car body materials are mostly made of metal materials such as alloy steel or alloy aluminum, and are sprayed. In consideration of the overall aesthetics...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/16C08L23/08C08K3/34
CPCC08L23/14C08L2205/03C08L2205/035C08L2205/025C08L23/16C08L23/0815C08K3/34C08L23/142
Inventor 陈嘉杰黄险波叶南飚吴国峰罗忠富杨波丁正亚
Owner KINGFA SCI & TECH CO LTD
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