Reinforcing fiber laminated sheet, fiber-reinforced resin molded body, and manufacturing method of reinforcing fiber laminated sheet

A fiber-reinforced, laminated sheet technology, applied in the direction of synthetic resin layered products, chemical instruments and methods, coatings, etc., can solve the problems that the three-dimensional shape cannot be fully deformed, expensive, and have adverse effects on mechanical properties

Active Publication Date: 2020-10-09
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the impregnated matrix resin binds the reinforcing fibers in the prepreg, sufficient deformability cannot be obtained for fine irregularities and complicated three-dimensional shapes.
This leads to wrinkling, which adversely affects the mechanical properties
[0005] Furthermore, in the molding of aircraft components using this prepreg, expensive autoclave equipment is usually used

Method used

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  • Reinforcing fiber laminated sheet, fiber-reinforced resin molded body, and manufacturing method of reinforcing fiber laminated sheet
  • Reinforcing fiber laminated sheet, fiber-reinforced resin molded body, and manufacturing method of reinforcing fiber laminated sheet
  • Reinforcing fiber laminated sheet, fiber-reinforced resin molded body, and manufacturing method of reinforcing fiber laminated sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0193] Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to this.

[0194] First, evaluation of formability, shape stability, and fiber-reinforced resin molded article of the reinforced fiber laminated sheet is shown below.

[0195] Regarding the shapeability of the reinforcing fiber laminated sheet, evaluation was performed by the following three types of shapes, that is, for a simple element mold (a shape obtained by cutting an ellipsoidal shape along the horizontal direction) ( Figure 7 ), to the model shape mold 1 (imitating the shape of the Z-shaped stringer used in the structure of the skin (skin) and stringer (stringer) of the aircraft) ( Figure 8 ), and to the model shape mold 2 (to imitate the shape of the trunk lid of a car) ( Figure 9 ) of the endowment. The evaluation criteria for the formability of the reinforcing fiber laminated sheet are shown below.

[0196] AA: No wrinkle

[0197] A: There are no more ...

reference example 1

[0210] [Reference Example 1] Reinforcing Fiber Bundle 1

[0211] Carbon fibers "Torayca" T700SC (number of single yarns: 24,000) manufactured by Toray Co., Ltd. were opened so as to have a width of 25 mm by an opener equipped with an opener roll. Next, a bisphenol A type epoxy resin (XB3366 manufactured by Huntsman Co., Ltd. XB3366, T g : 80°C) to form a fixed material. Furthermore, the carbon fibers to which the fixing material was adhered were heated at 200° C. in a heating device to melt a part of the fixing material so that the fixing material would not come off in the subsequent process, thereby obtaining the reinforcing fiber bundle 1 .

reference example 2

[0212] [Reference example 2] Matrix resin

[0213] As the matrix resin, a two-component epoxy resin (main ingredient: jER828 manufactured by Mitsubishi Chemical Corporation, curing agent: anhydride-based curing agent manufactured by Toray Corporation) was used.

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Abstract

The present invention provides a reinforcing fiber sheet exhibiting shape stability and high formability, a method for producing the same, and a fiber-reinforced resin molded article. The reinforcing fiber sheet of the present invention is a reinforcing fiber laminated sheet comprising a plurality of reinforcing fiber bundles arranged in one direction, and there is no direct binding force between the reinforcing fiber bundles in the same layer The first and second reinforcing fiber bundle layers are arranged in such a way that the fiber orientations are different from each other, and the layers of the first and second reinforcing fiber bundle layers are fixed to each other by fixing members, so that the first and second reinforcing fiber bundle layers Two reinforcing fiber bundle layers are integrated, and the reinforcing fiber laminated sheet satisfies the following conditions (i) and (ii). (i) There is a fixing portion including at least one fixing element on the fixing surface of the first and second reinforcing fiber bundle layers, and the average area S of the fixing portion is 1 100mm 2 (ii) In the above-mentioned fixing part, the area ratio of the above-mentioned fixing member to the above-mentioned fixing part is 0.1% or more and 80% or less.

Description

technical field [0001] The present invention relates to a fiber-reinforced laminated sheet, a fiber-reinforced resin molded article comprising the fiber-reinforced laminated sheet and a matrix resin, and a method for producing the fiber-reinforced laminated sheet. Background technique [0002] Fiber reinforced plastic (Fiber Reinforced Plastic: FRP) and carbon fiber reinforced plastic (Carbon Fiber Reinforced Plastic: CFRP) in which carbon fibers are used are lightweight and have excellent mechanical properties such as strength and rigidity. Therefore, taking advantage of its characteristics, applications to transportation equipment such as aerospace and automobiles, sports applications, and industrial applications have been developed in recent years. [0003] As typical manufacturing methods of FRP, autoclave molding method, resin transfer molding (RTM) method, and vacuum injection molding (VaRTM) method are known. Hitherto, autoclave molding using prepregs has been used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/26C08J5/04
CPCC08J5/04C08J2363/00B29C70/228B29C70/382B32B2605/18B32B2262/101B32B2603/00B32B5/08B32B5/26B32B2605/003B32B2262/0269B32B2262/14B32B2260/046B32B7/12B32B5/12B32B2262/105B32B2250/02B32B2250/20B32B2535/00B32B2260/023B32B2255/02B32B2262/103B32B2255/26B32B2262/10B32B2255/205B32B17/04B32B17/067B32B2260/021B32B2264/101B32B2264/108B32B2264/0271B32B27/12B32B2305/08B32B2307/3065B32B2309/02B32B2309/12
Inventor 三浦真吾佐藤将之樋野丰和
Owner TORAY IND INC
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