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Polypropylene composite material for automotive instrument panel and preparation method for polypropylene composite material

A technology for automobile instrument panels and composite materials, which is applied in the field of composite material preparation, can solve the problems that the impact performance and rigidity of materials are not well balanced, cannot meet the special requirements of automobile instrument panels, etc., and achieves improved appearance quality, excellent rigidity and toughness. The effect of balance and short molding cycle

Inactive Publication Date: 2012-07-11
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These patents solve the appearance problem of polypropylene material parts to a certain extent, but these patents use special structures to improve low-temperature performance, and the impact performance and rigidity of the material are not well balanced, which cannot meet the requirements of automobile dashboards. special requirements

Method used

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  • Polypropylene composite material for automotive instrument panel and preparation method for polypropylene composite material

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Embodiment 1

[0037] The main components of the polypropylene composite material of the present invention include 70.3% polypropylene, 15% inorganic filler, 8% toughening agent POE, 3% polybutene-1, 0.1% antioxidant 3114 and 0.2% antioxidant 168, 0.2 % Light Stabilizer 944 and 0.2% Light Stabilizer 770, 2% Scratch Resistance Auxiliary, and 1% Black Masterbatch.

Embodiment 2

[0039] The main components of the polypropylene composite material of the present invention include 68.3% polypropylene, 15% inorganic filler, 8% toughening agent POE, 5% polybutene-1, 0.1% antioxidant 3114 and 0.2% antioxidant 168, 0.2 % Light Stabilizer 944 and 0.2% Light Stabilizer 770, 2% Scratch Resistance Auxiliary, and 1% Black Masterbatch.

Embodiment 3

[0041] The main components of the polypropylene composite material of the present invention include 60.3% polypropylene, 20% inorganic filler, 12% toughening agent POE, 4% polybutene-1, 0.1% antioxidant 3114 and 0.2% antioxidant 168, 0.2 % Light Stabilizer 944 and 0.2% Light Stabilizer 770, 2% Scratch Resistance Auxiliary and 1% Black Masterbatch.

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Abstract

The invention discloses a polypropylene composite material for an automotive instrument panel and a preparation method for the polypropylene composite material. The polypropylene composite material comprises the following components in percentage by weight: 45 to 80 percent of polypropylene, 10 to 30 percent of inorganic filler, 5 to 20 percent of toughening agent polyolefin elastomer (POE), 2 to 10 percent of polybutylene-1, 0.1 to 2 percent of antioxidant, 0.1 to 1 percent of light stabilizer, 0 to 3 percent of anti-scratch aid and 0 to 3 percent of the balance. The polypropylene composite material has excellent rigid-tough balance; the low-temperature notch strength is far higher than that of general polypropylene composite materials; the injection molding cycle is short; apparent defects such as tiger skin and the like are avoided on the surfaces of injection-molded sample pieces; and the characteristics efficiently meet the requirements of automotive instrument panels.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a polypropylene composite material used for automobile dashboards, and a method for preparing the composite material. The material has excellent balance between rigidity and toughness, heat resistance and low temperature resistance, and is suitable for injection molding. There are no appearance defects such as tiger skin pattern on the surface of the sample. Background technique [0002] Because polypropylene has the advantages of excellent physical properties, chemical resistance, easy molding and processing, light weight and low price, these characteristics make it widely used in fields such as auto parts. However, polypropylene also has disadvantages such as low rigidity, poor heat resistance, and poor low-temperature impact resistance. Therefore, it must be modified to improve low-temperature impact performance and rigidity in order to be used in automotive dashboards. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L23/20C08K13/02B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 蔡青张鹰张祥福周文
Owner SHANGHAI PRET COMPOSITES
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