Thermoset hybrid fabric composite material and preparation method and application thereof

A composite material, thermosetting technology, used in transportation and packaging, superstructure sub-assembly, superstructure and other directions, can solve the problems of high temperature resistance, low compressive strength, poor surface bonding performance, etc., to reduce vehicle weight, improve Toughness, the effect of improving impact resistance

Active Publication Date: 2010-09-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the defects of UHMWPE fiber such as poor surface bonding performance,

Method used

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  • Thermoset hybrid fabric composite material and preparation method and application thereof
  • Thermoset hybrid fabric composite material and preparation method and application thereof
  • Thermoset hybrid fabric composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The raw materials and their volume percentages listed in the following table are used to prepare thermosetting hybrid fabric composite materials for automobile engine covers:

[0036]

raw material

volume percent

content

Carbon fiber (specification 6k, provided by Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences)

37％

UHMWPE fiber (Hunan Zhongtai Special Equipment Co., Ltd.)

32％

Novolac epoxy vinyl ester resin (Shangwei (Shanghai) Fine Chemical Co., Ltd.)

28％

Curing agent: cyclohexanone peroxide

0.9％

Accelerator: cobalt naphthenate

0.6％

Release agent: fatty acid (19SAM, Beijing Kekelas Chemical Technology Co., Ltd.)

1.5％

[0037] 2. Preparation process

[0038] Weave carbon fiber and UHMWPE fiber into three twill patterns using existing weaving technology figure 1 The carbon fiber and UHMWPE fiber hybrid fabric shown is cut into a fabric with a si...

Embodiment 2

[0046] Except that the raw materials were replaced according to the above table, the rest of the operations were the same as in Example 1 to obtain a thermosetting hybrid fabric composite material for the automobile engine cover.

[0047] The above-mentioned thermosetting hybrid fabric composite material for the automobile engine cover was tested under a universal testing machine. The results of multiple experiments showed that the elastic modulus of the composite material was close to 46GPa, the tensile strength was 452MPa, and the ultimate strain reached 2.7 %. According to ASTM256-03 test material impact performance, the impact strength of the composite material is 32.5kJ / m when the ambient temperature is (24±1)°C and the relative humidity is (52±10)%. 2 . The surface quality of this material reaches grade A, the dimensional accuracy is 0.5 grade, and the production cycle is 1 hour.

[0048] Compared with ordinary carbon fiber reinforced composite materials, the hy...

Embodiment 3

[0051] Except that the raw materials were replaced according to the above table, the rest of the operations were the same as in Example 1 to obtain a thermosetting hybrid fabric composite material for the automobile engine cover.

[0052] The above-mentioned thermosetting hybrid fabric composite material for the automobile engine cover was tested under a universal testing machine. The results of multiple experiments showed that the elastic modulus of the composite material was close to 48GPa, the tensile strength was 460MPa, and the ultimate strain reached 2.7 %. According to ASTM256-03 test material impact performance, the impact strength of the composite material is 34.5kJ / m when the ambient temperature is (20±6)°C and the relative humidity is (50±15)%. 2 . The surface quality of this material reaches grade A, the dimensional accuracy is 0.5 grade, and the production cycle is 1 hour.

[0053] Compared with ordinary carbon fiber reinforced composite materials, the hybrid ...

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Abstract

The invention discloses a thermoset hybrid fabric composite material and a preparation method and application thereof. The thermoset hybrid fabric composite material is mainly prepared from the following raw materials in percentage by volume: 10-65% of carbon fiber, 5-60% of UHMWPE fiber, 20-30% of vinyl resin, 0.5-2% of curing agent and 0.6-2% of accelerator. The composite material enables the carbon fiber and the UHMWPE fiber to be in hybrid use at a specific ratio so as to complement the advantages of the two to obtain the thermoset composite material with favorable combination property, the elastic modulus thereof approaches to 45 GPa, and limiting strain reaches 2-3%. Compared with the common carbon fiber reinforced composite material, the thermoset hybrid fabric composite material has obvious yield behavior, high interlaminar shear strength and favorable adhesive property and can be used for preparing automobile structures so as to improve the shock resistance of the automobiles.

Description

technical field [0001] The invention relates to the field of composite materials for automobile structural parts, in particular to a thermosetting hybrid fabric composite material and its preparation method and application. Background technique [0002] At present, in many countries, electric vehicles and some high-end automobiles and racing cars produced in small batches have successively used the main structural parts and secondary load-bearing structural parts made of carbon fiber reinforced thermosetting resin composites. All performance indicators can meet the design requirements, comparable to traditional metal material parts. In addition, such products exhibit excellent corrosion and corrosion resistance properties. Compared with aluminum alloy components of the same volume, the weight reduction can reach 50%. But carbon fiber has a serious disadvantage, that is, low elongation. For example, the elongation rate of high-strength carbon fiber is 1.4%, while the elong...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C08L23/06C08L63/10C08K13/04C08K7/06C08J5/24B62D25/10
Inventor 朱春燕范欣愉颜春潘利剑卢桂阳胡东梅丁江平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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