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A kind of polypropylene composite material and its preparation method and an application

A composite material, polypropylene technology, applied in the field of polypropylene composite materials and its preparation, to achieve the effect of improving dispersion, improving appearance, and improving technical problems

Active Publication Date: 2022-01-28
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are few reports on the research on needle-hole improvement technology

Method used

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  • A kind of polypropylene composite material and its preparation method and an application
  • A kind of polypropylene composite material and its preparation method and an application

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention is further illustrated by the following examples, but the present invention is not limited by the following examples.

[0040] The raw materials used in the present invention are all derived from commercially available products.

[0041] Homopolypropylene: PP H9018;

[0042] Polypropylene copolymer: PP EP548R;

[0043] Ethylene-propylene copolymer A: molecular weight 85,000, crystallinity 15%, ethylene content 12%, ethylene-propylene block copolymer;

[0044] Ethylene propylene copolymer B: molecular weight 88000, crystallinity 14%, ethylene content 13%, ethylene propylene random copolymer;

[0045] Ethylene-propylene copolymer C: molecular weight 60,000, crystallinity 18%, ethylene content 9.5%, ethylene-propylene random copolymer;

[0046] Ethylene propylene copolymer D: molecular weight 118000, crystallinity 16%, ethylene content 7%, ethylene propylene random copolymer;

[0047] Ethylene propylene copolymer E: molecular weight 78000, crystal...

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PUM

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Abstract

The invention discloses a polypropylene composite material, which comprises the following components in parts by weight: 63-99 parts of polypropylene resin; 0-30 parts of toughening agent; 3-10 parts of ethylene-propylene copolymer; wherein, ethylene-propylene In the copolymer, the ethylene content is 6-15%, the crystallinity is 10-20%, and the molecular weight is 30000-120000 g / mol. The polypropylene resin may be homopolypropylene or copolymerized polypropylene. When the polypropylene resin is homopolypropylene, the content of the toughening agent is not zero. The invention can entangle rubber particles in the polypropylene composite material by adding a certain amount of ethylene-propylene copolymer, thereby improving the needle hole phenomenon of the polypropylene composite material.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene composite material, a preparation method and an application thereof. Background technique [0002] Polypropylene (PP) has the advantages of low density, easy processing, and excellent mechanical properties, and has been widely used in the automotive industry, home appliances, and machinery. For the automobile industry, polypropylene is mainly used in interior and exterior parts of automobiles, interior parts such as instrument panels, door panels and pillars, etc., and exterior parts such as bumpers, fenders, deflectors, etc. With people's attention and emphasis on the appearance of automotive materials, automotive materials not only have excellent mechanical properties, but also have excellent appearance performance, and have no appearance defects such as pitting, crystal points, fish eyes, sink marks, and pinholes. [0003] The eye of a needle is that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/16C08L53/00C08L23/08
CPCC08L23/12C08L23/14C08L2205/06C08L2205/03C08L23/0815C08L53/00C08L23/142C08L23/08C08L23/16C08L23/10C08L23/18C08L25/08
Inventor 雷亮叶南飚黄险波俞飞吴亦建苏娟霞彭莉吴国峰杨波罗忠富
Owner KINGFA SCI & TECH CO LTD