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High polar polypropylene composite material as well as preparation method thereof and application to automobile exterior trim materials

A composite material and polypropylene technology, which is applied in the high-polarity polypropylene composite material and its preparation, as well as in the application field of automotive exterior materials, can solve the problem of high adding cost, damage to the mechanical properties of polypropylene system, and high polymer polarity. The problem of high cost of the agent, to achieve the effect of low cost, easy implementation and operation, and improved polarity and mechanical properties

Active Publication Date: 2018-02-23
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above two methods of blending modification have two disadvantages: ① Adding a large amount of polymer polar substances will cause great damage to the mechanical properties of the polypropylene system, especially for the polypropylene system using polypropylene recycled materials ; ②Polymer polar additives are generally expensive, so the cost of adding such a large amount is too high

Method used

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  • High polar polypropylene composite material as well as preparation method thereof and application to automobile exterior trim materials
  • High polar polypropylene composite material as well as preparation method thereof and application to automobile exterior trim materials
  • High polar polypropylene composite material as well as preparation method thereof and application to automobile exterior trim materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Mix 59 parts by weight of polypropylene, 5 parts by weight of POE (8150), 20 parts by weight of talc, 10 parts of modified PVC, 5 parts of hyperbranched polyamide ester, 0.3 parts by weight of antioxidant 1010, 0.2 parts by weight of antioxidant 168 , 0.5 parts by weight of carbon black is added to a high-speed mixer with a rotation speed of about 1000 rpm and mixed for 5 minutes, and then the mixture is put into a twin-screw extruder, extruded and pelletized at a temperature of 190 ℃ ~ 220 ℃ to obtain modified Polypropylene composite material.

Embodiment 2

[0047] 67 parts by weight of polypropylene, 5 parts by weight of POE (8150), 20 parts by weight of talc, 5 parts of modified PVC, 2 parts of hyperbranched polyamide ester, 0.3 parts by weight of antioxidant 1010, 0.2 parts by weight of antioxidant 168 , 0.5 parts by weight of carbon black is added to a high-speed mixer with a rotation speed of about 1000 rpm and mixed for 5 minutes, and then the mixture is put into a twin-screw extruder, extruded and pelletized at a temperature of 190 ℃ ~ 220 ℃ to obtain modified Polypropylene composite material.

[0048] The four materials prepared in Examples 1 to 2 and Comparative Examples 1 to 2 were injection molded into bumpers, and the paint firmness was verified by the cross scratch method after spraying. By comparison, it is found that the bumper injection molded from the material provided in Comparative Example 1 has the worst paint adhesion. After the cross scratching, it was glued and pulled three times with 3M tape, and the paint wa...

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Abstract

The invention discloses a high polar polypropylene composite material. The raw material composition comprises the following components in percentages by weight: 50-88% of polypropylene, 5-15% of a flexibilizer, 0-30% of a mineral filler, 5-10% of modified polyvinyl chloride, 1-5% of hyperbranched polyesteramide, and 0.1-5% of an auxiliary agent. Modified polyvinyl chloride and hyperbranched polyesteramide are added, so that polarity of the polypropylene composite material is improved, excellent mechanical properties are maintained, and the product can be used as a material special for exteriortrim of automobiles. A preparation method of the high polar polypropylene composite material is provided, and the method employs a double screw extruder for realization, the preparation is simple, the method is easy to carry out and operate, industrial production is easy, and the method has wide application prospects.

Description

Technical field [0001] The invention relates to the field of polypropylene composite materials, in particular to a high-polarity polypropylene composite material, a preparation method thereof, and application in automobile exterior materials. Background technique [0002] Polypropylene has always been the focus of the automotive industry and the plastics industry because of its low density, high strength, high hardness, wear resistance, bending fatigue resistance, high heat resistance temperature, excellent moisture resistance and chemical resistance, easy processing and molding, and low price. focus. Modified polypropylene materials for automotive exterior materials require not only good impact properties and processing properties, but also good paint adhesion properties. However, polypropylene is a non-polar material, and its surface tension is low. The paint firmness of the bumper directly injection molded from unmodified polypropylene material is insufficient, and it is diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L27/06C08L91/06C08L77/12C08K13/02C08K3/30C08K3/32C08K5/09C08K3/34
CPCC08K2003/3045C08L23/14C08L2205/02C08L2205/035C08L23/0815C08L27/06C08L91/06C08L77/12C08K13/02C08K3/30C08K3/32C08K5/09C08K3/34
Inventor 孙心克陈晓敏李俊安孝善郑京连
Owner CGN JUNER NEW MATERIALS
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