Anti-impact-resistant modified polypropylene bumper material

A polypropylene and bumper technology, which is applied in the field of auto parts materials, can solve the problems of small elongation at break, insufficient impact strength, poor weather resistance of materials, etc., and achieve increased hardness and melt flow rate, chemical resistance Improved properties and high elongation at break

Inactive Publication Date: 2015-11-11
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the materials used for bumpers have problems such as poor shrinkage control, low paint adhesion, poor weather resistance, poor toughness, unsatisfactory impact resistance, small elongation at break and low thermal deformation temperature.
Chinese invention patent application CN1566196A discloses a new type of polypropylene composite material, which is composed of the following components by weight: copolymerized polypropylene pellets 25-60, thermoplastic elastomer 5-20, high-density polyethylene 0-20, Mineral filler 0-40, polar polymer material 0-10, anti-heat oxidant 0.1-0.6, coupling agent 0.1-0.3, light ultraviolet absorber 0.1-0.3, which has strong adhesion, but the volume of the material changes Larger, poor impact resistance; and poor fluidity during molding, complicated pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The bumper material includes the following components in parts by weight: 45 parts of polypropylene, 3 parts of tetrakis-(2,6-xylyl)resorcinol diphosphate, 3 parts of tetrakis-(2,6-xylene Base) hydroquinone diphosphate, 10 parts of metallocene polyolefin elastomer, 7 parts of nylon, 2-10 parts of maleic anhydride, 8 parts of thermoplastic polyurethane, 1-6 parts of inorganic composite particles, 1.5 parts of vinyl triethyl Oxygen silane, 6 parts of ethylene propylene rubber, 6 parts of polyethylene, 7 parts of shear thickener, 14 parts of polym-phenylene isophthalamide fiber, 3 parts of antistatic agent, 3 parts of antioxidant, 6 parts 1 part dispersant, 3 parts plasticizer, 3 parts UV absorber. The inorganic composite particles are a mixture of wollastonite, talcum powder, barite, calcium carbonate, quartz and nano-alumina.

[0015] In the present embodiment, the antistatic agent is a mixture of ethoxylauramide and glycerol monostearate (GMS)

[0016] In this embodim...

Embodiment 2

[0021] High-impact modified polypropylene bumper material, the bumper material includes the following components by weight: 35 parts of polypropylene, 1 part of tetrakis-(2,6-xylyl) resorcinol diphosphate , 1 part of four-(2,6-xylyl) hydroquinone diphosphate, 5 parts of metallocene polyolefin elastomer, 2 parts of nylon, 2 parts of maleic anhydride, 4 parts of thermoplastic polyurethane, 1 part of inorganic combination Particles, 0.5 parts of vinyltriethoxysilane, 3 parts of ethylene propylene rubber, 3 parts of polyethylene, 4 parts of shear thickener, 10 parts of polymphenylene isophthalamide fiber, 1 part of antistatic agent , 1 part of antioxidant, 4 parts of dispersant, 1 part of plasticizer, 1 part of ultraviolet absorber; the inorganic composite particles are wollastonite, talcum powder, barite, calcium carbonate, quartz and nano-alumina mixture.

[0022] In this embodiment, the antistatic agent is a mixture of ethoxylated alkylamine and ethoxylated alkylamine.

[002...

Embodiment 3

[0028] High-impact modified polypropylene bumper material, the bumper material includes the following components by weight: 55 parts of polypropylene, 5 parts of tetrakis-(2,6-xylyl) resorcinol diphosphate , 5 parts of four-(2,6-xylyl) hydroquinone diphosphate, 15 parts of metallocene polyolefin elastomer, 10 parts of nylon, 10 parts of maleic anhydride, 12 parts of thermoplastic polyurethane, 6 parts of inorganic combination Particles, 3 parts of vinyltriethoxysilane, 11 parts of ethylene propylene rubber, 11 parts of polyethylene, 10 parts of shear thickener, 16 parts of polymphenylene isophthalamide fiber, 6 parts of antistatic agent , 4 parts of antioxidants, 10 parts of dispersants, 5 parts of plasticizers, 5 parts of ultraviolet absorbers; the inorganic composite particles are wollastonite, talcum powder, barite, calcium carbonate, quartz and nano-alumina mixture.

[0029] In this embodiment, the antistatic agent is ethoxylated alkyl acid amine.

[0030] In this embodi...

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PUM

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Abstract

The invention discloses an anti-impact-resistant modified polypropylene bumper material and an automobile bumper prepared therefrom. The bumper material comprises propylene, tetra(2,6-dimethylphenyl)-m-resorcinol diphosphate, tetra-(2,6-dimethylphenyl)-p-resorcinol diphosphate, a metallocene polyolefin elastomer, nylon, maleic anhydride, thermoplastic polyurethane, inorganic composite particles, vinyl triethoxyl silane, ethylene propylene rubber, polyethylene, a shear thickening agent, polyisophthaloyl metaphenylene diamine fiber, an anti-static agent, an anti-oxidant, a dispersing agent, a plasticizer and a UV absorber. The bumper material is low in shrinkage rate, is high in flowability, is good in weather resistance and is excellent in paint performance, and meanwhile is high in toughness, strength, elongation at break and heat deflection temperature. The automobile bumper prepared from the bumper material is free of being broken even an automobile is slightly impacted.

Description

technical field [0001] The invention relates to the field of auto parts materials, in particular to a modified polypropylene bumper material with high impact resistance. Background technique [0002] PP is a semi-crystalline material. It is harder and has a higher melting point than PE. Because the homopolymer PP temperature is very brittle below 0C, many commercial PP materials are random copolymers with 1 to 4% ethylene or clamp copolymers with higher ethylene content. Copolymer PP materials have a low heat distortion temperature (100C), low transparency, low gloss, and low rigidity, but have stronger impact strength. The strength of PP increases with the increase of ethylene content. The Vicat softening temperature of PP is 150°C. Due to the high degree of crystallinity, this material has very good surface stiffness and scratch resistance properties. PP does not have environmental stress cracking problems. Usually, PP is modified by adding glass fibers, metal additi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L77/00C08L75/04C08L23/16C08L23/06C08L77/10C08K13/02C08K3/34C08K3/30C08K3/26C08K3/36C08K3/22C08K5/523
Inventor 邓涛韩海硕罗卫兴李小静李德才
Owner CHONGQING JIAOTONG UNIVERSITY
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