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Polypropylene composition for automobile enamel-plastic instrument panel frameworks and preparation method thereof

A technology of polypropylene composition and instrument panel, which is applied in the field of polypropylene composition and its preparation, can solve the problems of complex production process, high technical cost, increased cost, etc., achieve high surface activity, reduce manufacturing cost, and improve safety Effect

Active Publication Date: 2013-04-10
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods can improve the polarity of polypropylene, but the technical cost is high, the production process is complicated, and there is no marketization
It can be seen that when traditional polypropylene materials are used, due to the need for surface treatment processes, the cost will inevitably increase

Method used

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  • Polypropylene composition for automobile enamel-plastic instrument panel frameworks and preparation method thereof
  • Polypropylene composition for automobile enamel-plastic instrument panel frameworks and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0042] The main components of the polypropylene composition of the present invention include 80.7% M700R, 10% inorganic filler, 6% toughening agent POE, 1% maleic anhydride grafted polypropylene (PP-g-MAH), 1% ethylene ethyl acrylate ( EEA), 0.1% antioxidant 3114, 0.2% antioxidant 168 and 1% black masterbatch.

Embodiment 2

[0044] The main components of the polypropylene composition of the present invention include 76.7% M700R, 10% inorganic filler, 6% toughening agent POE, 3% maleic anhydride grafted polypropylene (PP-g-MAH), 3% ethylene ethyl acrylate ( EEA), 0.1% antioxidant 3114, 0.2% antioxidant 168 and 1% black masterbatch.

Embodiment 3

[0046] The main components of the polypropylene composition of the present invention include 70.7% M700R, 15% inorganic filler, 8% toughening agent POE, 3% maleic anhydride grafted polypropylene (PP-g-MAH), 2% ethylene ethyl acrylate ( EEA), 0.1% antioxidant 3114, 0.2% antioxidant 168 and 1% black masterbatch.

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Abstract

The invention discloses a polypropylene composition for automobile enamel-plastic instrument panel frameworks and a preparation method thereof. The polypropylene composition comprises the following components in parts by weight: 48-82 parts of polypropylene, 10-30 parts of inorganic filler, 5-15 parts of toughener, 1-4 parts of maleic anhydride graft polymer, 1-5 parts of ethylene-ethyl acrylate, 0.1-2 parts of antioxidant, and 0-3 parts of other assistants. By adding the maleic anhydride graft polypropylene and ethylene-ethyl acrylate polar compound, the polypropylene composition has the following advantages: 1. the polypropylene composition has high surface tension (up to 48 mN / m); 2. the automobile instrument panel framework formed by carrying out injection molding on the polypropylene composition has high surface activity, and can be directly attached to the foam layer without surface pretreatment, thereby enhancing the production efficiency, saving the energy and lowering the manufacturing cost when producing the enamel-plastic foamed soft instrument panel; and 3. the polypropylene composition has obviously higher low-temperature impact strength, and thus, can greatly enhance the safety of the automobile instrument panel.

Description

Technical field [0001] The invention relates to a polypropylene composition and a preparation method thereof, in particular to a polypropylene composition used for automobile slush-molded instrument panel skeletons and a preparation method thereof. Background technique [0002] Polypropylene has good processing properties, chemical resistance, light weight and low price, so it is widely used. In the modern automobile industry, in order to increase the safety and comfort of passengers, many automobile dashboards use soft dashboards made of slush molding and foaming processes. The method is as follows: first use the slush molding process to form a mold shape The slush-plastic skin product; then adopts the foaming molding process to inject foaming material between the slush-plastic skin and the frame, and the skin and the frame are foamed to form a soft state to form a soft instrument panel for slush-plastic vehicles. [0003] However, because polypropylene is a non-polar polymer wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08L23/08C08L51/06C08K3/34C08K3/26B29C47/92B29C48/92
CPCB29C48/04
Inventor 蔡青张鹰张祥福周文
Owner SHANGHAI PRET COMPOSITES
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