A kind of high-polarity polypropylene composite material and its preparation method and its application in automotive exterior materials

A composite material, polypropylene technology, applied in the application of automotive exterior materials, high-polarity polypropylene composite material and its preparation field, can solve the problem of high adding cost, damage to the mechanical properties of the polypropylene system, and the help of 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: 2021-01-12
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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  • A kind of high-polarity polypropylene composite material and its preparation method and its application in automotive exterior materials
  • A kind of high-polarity polypropylene composite material and its preparation method and its application in automotive exterior materials
  • A kind of high-polarity polypropylene composite material and its preparation method and its application in automotive exterior materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 59 parts by weight of polypropylene, 5 parts by weight of POE (8150), 20 parts by weight of talcum powder, 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 was added into a high-speed mixer with a rotation speed of about 1000rpm and mixed for 5 minutes, and then the mixture was put into a twin-screw extruder, extruded and granulated at a temperature of 190°C to 220°C to obtain a modified polypropylene composite material.

Embodiment 2

[0047] With 67 parts by weight of polypropylene, 5 parts by weight of POE (8150), 20 parts by weight of talcum powder, 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 was added into a high-speed mixer with a rotation speed of about 1000rpm and mixed for 5 minutes, and then the mixture was put into a twin-screw extruder, extruded and granulated at a temperature of 190°C to 220°C to obtain a modified polypropylene composite material.

[0048] The four materials prepared in Examples 1-2 and Comparative Examples 1-2 were injection-molded into bumpers, and the firmness of the paint was verified by the cross-scratch method after spraying. It was found by comparison that the paint adhesion of the bumper injection-molded from the material provided in Comparative Example 1 was the worst. After cross-scratching, use 3M adhesive tape to stick it three ...

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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 an application in automobile exterior decoration materials. Background technique [0002] Polypropylene has always been concerned by the automobile industry and the plastics industry because of its advantages such as low density, high strength, high hardness, wear resistance, bending fatigue resistance, high heat resistance, excellent moisture resistance and chemical resistance, easy processing and molding, and low price. focus. Modified polypropylene materials for automotive exterior trim not only require good impact performance and processing performance, but also good paint adhesion performance. However, polypropylene is a non-polar material with low surface tension. The paint firmness of the bumper directly injection-molded with unmodified polypropylene material is insufficien...

Claims

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Application Information

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Patent Type & Authority Patents(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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