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Polypropylene (PP) composition for automobile bumpers and preparation method thereof

A technology of polypropylene composition and automobile bumper, which is applied in bumper and other directions, and can solve problems such as poor light stability, poor toughness, and low gloss

Inactive Publication Date: 2012-12-19
SUZHOU GULI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a polypropylene composition for automobile bumpers, which solves the technical problems of low strength, poor toughness, poor light stability and low gloss in existing modified polypropylene materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first step: Weigh various raw materials according to the weight fraction ratio described below

[0032] Copolymerized polypropylene 7760, Jinhaiqing Business Center 60.3%;

[0033] POE 8003, Ningbo Kangju New Material Co., Ltd. 15%;

[0034] Talc powder Linyi Red Calcium Talc Powder Factory 20%;

[0035] PP-g-MAH Shanwei Yuanfeng New Material Co., Ltd. 3%;

[0036] EB Korea Samsung 1.5%;

[0037] Flame retardant DMMP, Huayan Flame Retardant New Material Co., Ltd. 4%;

[0038] Light stabilizer 292, Angel Synthetic Chemical Co., Ltd. 0.3%

[0039] β crystal nucleating agent Nanjing Chengkuan Trading Co., Ltd. 0.3%.

[0040] The second step: Put the above raw materials into the high mixer and mix for 5-10 minutes;

[0041] Step 3: Put the mixed materials in the second step into the twin-screw extruder with a length-to-diameter ratio of 38:1. The temperature of the extruder is set as: Zone 1: 180-250°C, Zone 2: 180-250°C , Three zones 190-260°C, four zones 190-26...

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Abstract

The invention provides a polypropylene (PP) composition for automobile bumpers and a preparation method thereof. The PP composition for automobile bumpers is prepared from the following components in percentage by weight: 50-70% of PP copolymer, 10-20% of POE (polyolefin elastomer), 10-20% of talcum powder, 2-5% of PP-g-MAH (maleic anhydride), 1-2% of EB (ethidium bromide), 2-5% of flame retardant, 0.1-0.5% of photostabilizer and 0.1-0.5% of nucleating agent. The PP prepared according to the formula has the advantages of high low-temperature impact strength, high heat-deformation temperature, high toughness and ductility under high-speed stretch, low embrittlement tendency, high tensile strength, high tension strength, high shear strength, high flexural strength, high pressure intensity, low deformation, high stretching rate, high thermal expansion coefficient, low volatility, no migration, excellent ultraviolet resistance and excellent electric properties, and is suitable to be used as a material for automobile bumpers.

Description

technical field [0001] The invention relates to the field of polypropylene compositions, in particular to a polypropylene composition for automobile bumpers and a preparation method thereof. Background technique [0002] With the development of society, the development of science and technology, and the improvement of people's consumption level, cars have entered thousands of households, and with the popularization of humanized concepts and the formation of a new harmonious society, driving safety has become a concern of people. Automobile bumpers have also become a special concern of people. [0003] Automobile bumpers are generally made of polypropylene or stainless steel. Due to the high cost and complicated process of stainless steel materials, they are gradually replaced by polypropylene materials, followed by continuous improvement of the strength, toughness, and flame retardancy of polypropylene materials. It is very necessary to meet the safety needs of users. [0...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/08C08L51/06C08K13/02C08K3/34B29C47/92B60R19/03B29C48/92
CPCB29C48/40B29C48/625B29C48/875B29C48/92
Inventor 吴娟
Owner SUZHOU GULI BIOTECH
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