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High-strength impact-resistant composite material for automotive interior decoration member, and preparation method thereof

A technology for automotive interior parts and composite materials, which is applied in the field of high-strength impact-resistant composite materials for automotive interior parts and its preparation, and can solve the problems of poor rigidity, low tensile strength, and failure to meet the standards for automotive materials, etc. problems, to achieve the effect of improving mechanical and physical properties, increasing tensile strength, and improving low-temperature toughness

Inactive Publication Date: 2020-03-03
天津常春汽车技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If broken during high-speed impact, it cannot meet the requirements for material use
[0004] In order to improve the impact resistance of automotive interior materials, in the prior art, polyolefins are often compounded and modified. Although the low temperature impact resistance of the material is improved, its rigidity will deteriorate and cannot reach the level of automotive materials. Low-temperature-resistant and high-performance automotive interior parts cannot be obtained with the standard used
CN1156155A discloses a polypropylene resin composition and its application in the field of automotive interior parts. By adding elastomers and inorganic fillers, the polypropylene is modified to improve the toughness of the composition; but its tensile strength is too small , the rigidity of the composition needs to be improved

Method used

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  • High-strength impact-resistant composite material for automotive interior decoration member, and preparation method thereof
  • High-strength impact-resistant composite material for automotive interior decoration member, and preparation method thereof
  • High-strength impact-resistant composite material for automotive interior decoration member, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-strength impact-resistant composite material for automotive interior parts, prepared by the following method:

[0037] Weigh 80 parts of nylon 66, 140 parts of reinforced nylon sample, 130 parts of rubber copolymer sample, 5 parts of maleic anhydride grafted ethylene-acrylic acid copolymer, 5 parts of ethylene-hexene copolymer, hydrogenated ethylene - 5 parts of butadiene-styrene copolymer, 5 parts of carbon black, 0.8 part of tetramethylthiuram disulfide and 2 parts of glass fiber, 2 parts of calcium carbonate, 1 part of quartz powder, add to a high-speed mixer and mix evenly , the rotation speed of the mixer is 5000r / min, and the heating temperature is 120°C; the above mixture is extruded and granulated by a co-rotating, parallel twin-screw extruder; the screw speed is 80r / min, and the extrusion temperature is 220°C to obtain Example 1 High-strength impact-resistant composite materials.

Embodiment 2

[0039] A high-strength impact-resistant composite material for automotive interior parts, prepared by the following method:

[0040] Weigh 50 parts of nylon 66 according to the following parts by weight, 22 parts of reinforced nylon samples, 15 parts of rubber copolymer samples, 5 parts of maleic anhydride grafted ethylene-acrylic acid copolymers, 5 parts of ethylene-butylene copolymers, carbon black 1 part, 0.3 parts of tetramethylthiuram disulfide and 1 part of talc powder, put into a high-speed mixer and mix evenly, the speed of the mixer is 4500r / min, and the heating temperature is 100°C; The screw extruder extruded and granulated; the screw speed was 80r / min, and the extrusion temperature was 210°C to obtain the high-strength impact-resistant composite material of Example 2.

Embodiment 3

[0042] A high-strength impact-resistant composite material for automotive interior parts, prepared by the following method:

[0043] Weigh 60 parts of nylon 66 according to the following parts by weight, 3 25 parts of reinforced nylon samples, 3 20 parts of rubber copolymer samples, 1 part of maleic anhydride grafted ethylene-acrylic acid copolymer, 5 parts of ethylene-propylene-octene terpolymer 1 part, 1 part of carbon black, 0.3 part of tetramethylthiuram disulfide and 1 part of mica powder, add them into a high-speed mixer and mix evenly, the speed of the mixer is 4500r / min, and the heating temperature is 110°C; Parallel twin-screw extruder extruded and granulated; the screw speed was 80r / min, and the extrusion temperature was 210°C to obtain the high-strength impact-resistant composite material of Example 3.

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Abstract

The invention relates to the technical field of automobile parts, specifically to a high-strength impact-resistant composite material for an automotive interior decoration member, wherein the high-strength impact-resistant composite material comprises the following raw materials in parts by weight: 50-80 parts of nylon 66, 20-40 parts of reinforced nylon, 15-30 parts of a rubber copolymer, 1-5 parts of a compatilizer, 5-10 parts of a toughening agent, 1-5 parts of carbon black, 0.3-0.8 part of a vulcanizing agent and 1-5 parts of a filling agent. According to the invention, the high-strength impact-resistant composite material overcomes the defect that the traditional automotive interior decoration member material cannot integrate the rigidity and the low-temperature impact property; through the compounding modification of the nylon 66, the reinforced nylon and the rubber copolymer, the composite material integrating the rigidity and the low-temperature impact property is obtained, andthe requirements of the low-temperature-resistant and high-performance automotive interior decoration member material are met; the preparation method comprises the following steps: uniformly mixing the raw material components according to the ratio, melting, mixing, extruding and granulating to obtain the impact-resistant composite material; and the high-strength impact-resistant composite material integrating rigidity and low-temperature impact property is prepared.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a high-strength impact-resistant composite material for automotive interior parts and a preparation method thereof. Background technique [0002] Automotive Interior (Automotive Interior) mainly refers to the automotive products used in the interior modification of the car, involving all aspects of the car interior. For example, car steering wheel covers, car seat cushions, car floor mats, door interior trim panels, instrument panel assemblies, armrests, car pendants, interior decorations, storage boxes, etc., are all automotive interior products. Compared with other parts of the car, the interior trim has less influence on the running performance of the car. However, automotive interior parts must meet certain low-temperature impact requirements, especially low-temperature impact performance at 0°C-30°C. If the low-temperature performance is poor, the car will crack or gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L23/16C08L23/08C08L51/06C08K7/14C08K5/526C08K3/04C08K5/40C08K13/04
CPCC08L77/06C08L2205/025C08L2205/035C08L23/16C08L23/0815C08L51/06C08K7/14C08K5/526C08K3/04C08K5/40C08K13/04
Inventor 周国英孙延双任丽娟
Owner 天津常春汽车技术有限公司
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