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Self-repairing extrusion-grade polypropylene composite material and preparation method thereof

A composite material and extrusion-grade technology, which is applied in the preparation of self-repairable extrusion-grade polypropylene composite materials, and in the field of self-repairable extrusion-grade polypropylene composite materials, can solve the problem of easy scratches on the surface of extrusion-grade automotive products And other issues

Active Publication Date: 2016-04-20
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a self-repairable extrusion-grade polypropylene composite material and its preparation method to solve the problem that the surface of extrusion-grade automotive products is prone to scratches

Method used

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  • Self-repairing extrusion-grade polypropylene composite material and preparation method thereof
  • Self-repairing extrusion-grade polypropylene composite material and preparation method thereof
  • Self-repairing extrusion-grade polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take the components shown in Table 1 by weight percentage: polypropylene, elastomer (ethylene-propylene copolymer), talcum powder, fluoropolymer composition (polytetrafluoroethylene+perfluoropropylene vinyl ether PFA), Antioxidant. Mix the polypropylene, elastomer, and fluoropolymer composition in a high mixer for 3 minutes, then add talcum powder and antioxidant, and mix for another 2 minutes. The speed of the high mixer is 1500 rpm to obtain a premixed The premixed material is melted and extruded by a twin-screw extruder, and vacuum granulated to obtain a self-repairing extrusion-grade polypropylene composite material. The data after scratching and self-repairing of the scratches were measured, and the specific data are listed in Table 1.

Embodiment 2

[0026] Take the components shown in Table 1 by weight percentage: polypropylene, elastomer (ethylene-hexene copolymer), talcum powder, fluoropolymer composition (polytetrafluoroethylene+perfluoropropylene vinyl ether PFA) , Antioxidant. The preparation method is the same as in Example 1, and the performance test data are listed in Table 1.

Embodiment 3

[0028] Take the components shown in Table 1 by weight percentage: polypropylene, elastomer (ethylene-butylene copolymer), talcum powder, fluoropolymer composition (polytetrafluoroethylene+perfluoromethyl vinyl ether MFA ), antioxidants. The preparation method is the same as in Example 1, and the performance test data are listed in Table 1.

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Abstract

The invention discloses a self-repairing extrusion-grade polypropylene composite material and a preparation method thereof. The polypropylene composite material consists of the following raw materials in percentage by weight: 43-96.8% of polypropylene, 2-20% of elastomer, 0-30% of talc powder, 1-5% of fluorine-containing polymer composition and 0.1-2% of antioxidant. In the invention, the fluorine-containing polymer composition is introduced into the material formula; and in an extrusion moulding process, due to the shear friction between the resin melt and a screw cylinder, the fluorine-containing polymer tends to transfer to the product surface, and the scratch on the product surface is prevented while the micro-surface displacement deformation caused by stress scratch can be quickly repaired. Therefore, the problem in appearance caused by stress scratch in an application process of the polypropylene extrusion product is solved.

Description

technical field [0001] The invention relates to an extrusion-grade polypropylene composite material, in particular to a self-repairable extrusion-grade polypropylene composite material; the invention also provides a preparation method of a self-repairable extrusion-grade polypropylene composite material. Background technique [0002] Polyolefin materials are widely used in the automotive field due to their low price, light specific gravity, good chemical resistance and easy processing. Especially polypropylene materials, which have high strength and good comprehensive performance, are used in automotive interior and exterior trims. Most polyolefin materials. With the development of the automobile industry, the amount of polypropylene used in automobiles continues to increase, and consumers' requirements for automobile trims are also increasing. However, scratches or scratches will inevitably occur during the use of automotive accessories, which will affect the visual effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/16C08L27/18C08L27/12C08K3/34
CPCC08L23/12C08L2205/02C08L2205/035C08L23/0815C08L27/18C08L27/12C08K3/34
Inventor 徐美玲蔡青陈通华张鹰张祥福周文
Owner SHANGHAI PRET COMPOSITES
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