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Polypropylene composition special for automobile bumpers and preparing method thereof

A polypropylene composition and a technology for bumpers, which are applied in the field of special polypropylene compositions for automobile bumpers and their preparation, can solve problems such as easy freeze cracking, and achieve the effects of making up for the lack of rigidity and optimizing the parameters of the preparation process.

Active Publication Date: 2013-08-21
安徽龙和电力集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By comparison, copolymerized polypropylene is higher than homopolypropylene, and it is easier to meet the requirements of automobile bumpers. However, research has found that the Brinell hardness of copolymerized polypropylene PP is between 30 and 60, and it is easy to freeze and crack outdoors in severe cold

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The special polypropylene composition for automobile bumper of the present embodiment, its raw material formula is to be made up of each component of following parts by weight:

[0040] 35 parts of polypropylene copolymer;

[0041] 30 parts of recycled polypropylene copolymer;

[0042] Calcium carbonate 15 parts;

[0043] 20 parts of polyolefin elastomer;

[0044] Antioxidant 1010 0.2 parts;

[0045] Antioxidant 168 0.3 parts;

[0046] Anti-ultraviolet agent UV-531 0.3 part.

[0047] Diffusion powder EBS 0.08 parts.

[0048]The preparation method of the above-mentioned special polypropylene composition for automobile bumper specifically comprises the following steps:

[0049] According to the dosage of the formula, the copolymerized polypropylene, recycled polypropylene copolymer, calcium carbonate, polyolefin elastomer, antioxidant 1010, antioxidant 168, anti-ultraviolet agent UV-531 and diffusion powder EBS are mixed evenly and then sent to the twin-screw extrud...

Embodiment 2

[0059] The special polypropylene composition for automobile bumper of the present embodiment, its raw material formula is to be made up of each component of following parts by weight:

[0060] The special polypropylene composition for automobile bumper of the present embodiment, its raw material formula is to be made up of each component of following parts by weight:

[0061] 35 parts of polypropylene copolymer;

[0062] 30 parts of recycled polypropylene copolymer;

[0063] 10 parts of calcium carbonate;

[0064] 25 parts of polyolefin elastomer;

[0065] Antioxidant 1010 0.5 parts;

[0066] Antioxidant 168 0.5 parts;

[0067] Ultraviolet agent UV-531 0.5 parts

[0068] Diffusion powder EBS 0.1 part.

[0069] The preparation method of the above-mentioned special polypropylene composition for automobile bumper specifically comprises the following steps:

[0070] According to the dosage of the formula, the copolymerized polypropylene, recycled polypropylene copolymer, ca...

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Abstract

The invention discloses a polypropylene composition special for automobile bumpers and a preparing method thereof. The raw material formula of the polypropylene composition special for automobile bumpers is composed of, by weight, 30-50 parts of copolymerization polypropylene, 30-50 parts of copolymerization polypropylene reclaimed materials, 10-30 parts of calcium carbonate, 15-25 parts of flexibilizer, 0.1-0.5 part of antioxidant 1010, 0.1-0.5 part of antioxidant 168, 0.3-0.5 part of uvioresistant agent UV-531 and 0.08-0.1 part of diffusing powder ethylene bis stearamide (EBS). The polypropylene composition special for automobile bumpers can meet basic indexes of the automobile bumpers, has some indexes surpassing the world industrial level, has good characteristics of high rigidity, impact resistance, scratching resistance and low temperature resistance, can resist 95 DEG C high temperature and -30 DEG C low temperature, is solarization resistant and aging resistant, has service life as long as more than 15 years, can be recycled for reconstruction, and is an optimum material capable of protecting environment, being recycled, saving energy and reducing emission.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to polymer materials in the field of automobile manufacturing, and in particular to a special polypropylene composition for automobile bumpers and a preparation method thereof. Background technique [0002] Polypropylene is a common general-purpose plastic, which is polymerized from propylene monomers. The English abbreviation is PP. The material has poor heat resistance, a melting point of 165-175°C, low rigidity, low impact toughness, relatively low hardness, and poor low temperature resistance. , poor scratch resistance, in the field of modified plastics, its rigidity and toughness, scratch resistance and low temperature resistance are difficult to improve at the same time, so it cannot be directly used in special raw materials for automobile bumpers. [0003] According to the polymerization method, the molecular segment arrangement of polypropylene is mainly divided in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/00C08L9/06C08L23/20C08K13/02C08K3/26
Inventor 杜崇铭林湖彬
Owner 安徽龙和电力集团有限公司
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