Resin composition, carbon fiber-reinforced composite material precursor obtained using the resin composition, carbon fiber-reinforced material, and carbon fiber-reinforced carbon material

A technology of resin composition and composite materials, applied in the direction of fiber chemical characteristics, conjugated synthetic polymer artificial filament, coating, etc., to achieve high flame retardancy and heat resistance, excellent bending strength and bending modulus of elasticity Effect

Inactive Publication Date: 2015-07-01
ASAHI YUKIZAI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current status is that phenolic resins used as such substrates are inferior in terms of mechanical properties to epoxy resins or vinyl ester resins currently used as substrates for carbon fiber reinforced composite materials, and further improvements are required in this regard. Mechanical properties when using phenolic resins

Method used

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  • Resin composition, carbon fiber-reinforced composite material precursor obtained using the resin composition, carbon fiber-reinforced material, and carbon fiber-reinforced carbon material
  • Resin composition, carbon fiber-reinforced composite material precursor obtained using the resin composition, carbon fiber-reinforced material, and carbon fiber-reinforced carbon material
  • Resin composition, carbon fiber-reinforced composite material precursor obtained using the resin composition, carbon fiber-reinforced material, and carbon fiber-reinforced carbon material

Examples

Experimental program
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Effect test

manufacture example

[0050]In addition, a representative production example of SMC as a precursor is given. First, using a known SMC production device, the above-mentioned resin composition is made to have a substantially uniform thickness in the range of about 0.3 to 2.0 mm. After coating on the upper and lower carrier films, spread a specified amount of carbon fibers cut to a specified length on the paste coated on the lower carrier film, and then use the paste coated on the upper and lower carrier films An agent (resin composition) sandwiches the scattered carbon fibers, and then passes the whole body between impregnating rolls to impregnate the carbon fibers with the resin composition, and then performs aging treatment as necessary to obtain the target precursor. In addition, here, as a carrier film, a polyethylene film, a polypropylene film, etc. are normally used. In addition, aging treatment is one of the pretreatments before molding, and when performing this aging treatment, a method of pe...

Embodiment 1

[0058] 80 parts by mass of a resol type phenolic resin (manufactured by Asahi Organic Material Industry Co., Ltd., AKP-012) with a water content measurement result of 20.5% and a number average molecular weight of 362 by the Karl Fischer method and 1,000 parts by mass of 20 parts by mass of a novolak-type phenolic resin (manufactured by Asahi Organic Materials Co., Ltd., SP1010) was stored in a container, and mixed and stirred for about 5 minutes with a mixer. Next, 5 parts by mass of methanol as an alcohol was put into the container, and the mixture was further mixed and stirred for about 3 minutes with a mixer. Then, 1 mass part of magnesium oxide as a thickener, 1 mass part of calcium hydroxide, and 1 mass part of zinc stearate as an internal mold release agent are respectively dropped into a container, mixed and stirred for about 3 minutes with a mixer, and the This yields the target resin composition.

[0059] Next, 108 parts by mass of carbon fibers were impregnated wit...

Embodiment 2～3

[0064] Except that the alcohol contained in the resin composition was changed to ethanol or n-propanol, a resin composition was prepared in the same manner as in Example 1, and a carbon fiber reinforced composite material was produced in the same manner as in Example 1 using the resin composition. (and its precursor), then, its bending strength and flexural modulus were measured in the same manner as in Example 1, and the results of each measurement were collectively shown in Table 1 below.

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Abstract

Provided are: a resin composition which can give a carbon-fiber-reinforced composite material having not only high degrees of flame retardancy and thermal resistance, owing to properties of phenolic resins, but also excellent mechanical properties; a precursor of the carbon-fiber-reinforced composite material obtained by using the resin composition; a carbon-fiber-reinforced composite material formed from the precursor; and a carbon-fiber-reinforced carbon material. The resin composition contains, as essential components, a resol-type phenolic resin, a novolac-type phenolic resin, and at least one alcohol selected from a group consisting of methanol, ethanol and n-propylalcohol.

Description

technical field [0001] The present invention relates to a resin composition capable of obtaining excellent mechanical properties, a precursor of a carbon fiber-reinforced composite material obtained by using the resin composition, a carbon fiber-reinforced composite material obtained by molding the precursor, and carbonization and firing of the composite material carbon fiber reinforced carbon material. Background technique [0002] Currently, various proposals have been made regarding resin compositions used in carbon fiber-reinforced composite materials. For example, Japanese Patent Laid-Open No. 2004-269812 (Patent Document 1) discloses a In the composition, by using a liquid resol-type phenolic resin in a specific molecular weight range as its resin component, a carbon fiber-reinforced composite material having excellent mechanical properties can be obtained. In addition, since such a resin composition is mainly composed of phenolic resin, it also has excellent flame re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08J5/24C08K5/05C08K7/06
CPCC08L2205/02C08K5/05D01F8/16C08L61/06C09D161/06D01F9/145D01F9/22C08K7/06
Inventor 兼岩敏彦西森一人
Owner ASAHI YUKIZAI KOGYO CO LTD
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