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Fiber-reinforced resin-based composite material core and preparation method thereof

A fiber-reinforced resin and fiber-reinforced material technology, which is applied in the field of composite material core and its preparation and amplification, can solve problems such as insufficient rigidity, insufficient hardness, and poor dimensional stability of products, so as to improve surface quality and pultrusion efficiency , promote the effect of obvious effect

Inactive Publication Date: 2015-06-03
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production or use of composite cores with this structure, there are often the following problems: ①Due to improper manufacturing process or accidental factors, the thickness of the glass fiber layer of the composite core will be uneven during the manufacturing process, and some parts may even appear The phenomenon of carbon fiber leakage; ②Due to the large difference in thermal expansion coefficient and elastic modulus between glass fiber and carbon fiber, the conductor will appear separation between the carbon fiber layer and the glass fiber layer during use; ③The elastic modulus of carbon fiber is high, resulting in this type of The composite core has poor toughness, and it is easy to break or crack due to brittle factors during production, transportation and hanging construction
But there are the following deficiencies: rigidity is not large enough, hardness is not high enough, temperature resistance is not enough, toughness is not good enough, product dimensional stability is poor; delamination still occurs

Method used

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  • Fiber-reinforced resin-based composite material core and preparation method thereof
  • Fiber-reinforced resin-based composite material core and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The fiber-reinforced resin-based composite material for the core of the fiber-reinforced resin-based composite material of the present invention is made of a resin material and a fiber-reinforced material, and the volume fraction is 30% for the resin material and 70% for the fiber-reinforced material;

[0074] Fiber-reinforced materials include 80% of high-strength glass fibers with a tensile strength of ≥3500MPa by volume fraction and 20% of high-strength carbon fibers with a tensile strength of ≥4900MPa by volume fraction, and the high-strength glass fibers and high-strength carbon fibers are evenly mixed;

[0075]The resin material comprises the following components by mass: 100 parts of thermosetting resin (diglycidyl tetrahydrophthalate epoxy resin), 70 parts of curing agent (m-xylylenediamine), accelerator (2-ethyl-4 -methylimidazole) 8 parts, filler (nano-TiO2) 2 parts, release agent (zinc stearate) 3 parts.

[0076] The preparation steps are as follows:

[0077...

Embodiment 2

[0095] The fiber-reinforced resin-based composite material for the core of the fiber-reinforced resin-based composite material of the present invention is made of a resin material and a fiber-reinforced material, and the volume fraction is 50% for the resin material and 50% for the fiber-reinforced material;

[0096] Fiber-reinforced materials include 60% of high-strength glass fibers with a tensile strength of ≥3500MPa by volume fraction and 40% of high-strength carbon fibers with a tensile strength of ≥4900MPa by volume fraction, and the high-strength glass fibers and high-strength carbon fibers are evenly mixed;

[0097] The resin material comprises the following components by mass: 100 parts of resin (1,4-butanediol diglycidyl ether epoxy resin), 85 parts of curing agent (phthalic anhydride), accelerator (N, N-dimethyl benzylamine) 1 part, filler (nano-SiO2) 2 parts, mold release agent (stearic acid) 1 part.

[0098] The preparation steps of the composite material are the ...

Embodiment 3

[0106] The fiber-reinforced resin-based composite material for the core of the fiber-reinforced resin-based composite material of the present invention is made of a resin material and a fiber-reinforced material, and the volume fraction is 80% for the resin material and 20% for the fiber-reinforced material;

[0107] Fiber-reinforced materials include 80% of high-strength glass fibers with a tensile strength of ≥3500MPa by volume fraction and 20% of high-strength carbon fibers with a tensile strength of ≥4900MPa by volume fraction, and the high-strength glass fibers and high-strength carbon fibers are evenly mixed;

[0108] The fiber-reinforced resin-based composite material for power grid transmission lines according to the present invention, according to the following proportions: 100 parts of resin (melamine epoxy resin), 230 parts of curing agent (diphenyl ether tetraacid dianhydride), accelerator (triethanolamine ) 25 parts, filler (BaTiO3) 10 parts, release agent (polydim...

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Abstract

The invention provides a fiber-reinforced resin-based composite material core. The composite material core is prepared from a fiber-reinforced composite material core in the inner part and an insulating layer on the outer layer, wherein the insulating layer is a glass fiber layer and has the thickness of 0.2-2mm. According to the fiber-reinforced resin-based composite material core, the internal structure is uniform, a layering phenomenon difficultly occurs, the strength is high, the toughness is high, and the cost is reduced.

Description

technical field [0001] The invention relates to a composite material core and its preparation scale-up, in particular to a fiber-reinforced resin-based composite material core and a manufacturing method thereof. Background technique [0002] Carbon fiber is a special fiber composed of a carbon element. It is made of artificial chemical fibers with high carbon content and infusibility during heat treatment, which are processed by heat-stabilized oxidation treatment, carbonization treatment and graphitization. Carbon fiber has the characteristics of general carbon materials, such as high temperature resistance, abrasion resistance, electrical conductivity, heat conduction and corrosion resistance, etc., but different from general carbon materials, its shape has significant anisotropy, softness and good machinability , showing high strength along the fiber axis direction, and the specific gravity of carbon fiber is small. Carbon fiber is currently the world's preferred high-pe...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/04C08L61/06C08L67/06C08K13/04C08K7/04C08K7/06C08K7/24C08K3/34C08K3/26C08K3/36C08K3/24C08J5/04B29C70/52B29C70/54
Inventor 刘辉陈新何州文兰逢涛阳武朱镇
Owner STATE GRID CORP OF CHINA
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