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Reinforced fiber tape material and production method therefor, fiber reinforced resin molded body and reinforced fiber layered body using reinforced fiber tape material

A technology for reinforcing fibers and manufacturing methods, which is applied to chemical instruments and methods, synthetic resin layered products, coatings, etc., and can solve the problems of high manufacturing costs, residual end materials, and a large amount of reinforced fiber waste.

Inactive Publication Date: 2021-03-19
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a desired shape is cut out of a fabric with a certain width in this way, a large amount of remaining end materials will be generated afterwards.
That is, the amount of discarded reinforcing fibers increases, and the conventional method of prefabricating a reinforcing fiber base material in the form of a cloth having a constant width has the problem of increasing the production cost.

Method used

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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  • Reinforced fiber tape material and production method therefor, fiber reinforced resin molded body and reinforced fiber layered body using reinforced fiber tape material
  • Reinforced fiber tape material and production method therefor, fiber reinforced resin molded body and reinforced fiber layered body using reinforced fiber tape material
  • Reinforced fiber tape material and production method therefor, fiber reinforced resin molded body and reinforced fiber layered body using reinforced fiber tape material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] Using a reinforcing fiber tape material manufacturing device, for one carbon fiber wire bundle pulled out from a bobbin while adjusting the width to 4.0mm width, such as Figure 10 As shown, a non-woven fabric (made of polyamide resin, melting point 190° C.) is put in as the first resin material 1 from one side, and a non-woven fabric (made of polyamide resin, melting point 95° C.) is put in from the other side as the second resin material 2. ℃), while arranging to sandwich the carbon fiber bundle, let it pass through the heating part 12 heated to 180 ℃ and the pressing part 13 (nip roll, pressing force: 0.1MPa), then cool to 40 ℃ or less and Winding is performed to obtain a reinforcing fiber tape material in which a nonwoven fabric and a carbon fiber harness are integrated.

[0151] Manually cut out a reinforcing fiber tape material of about 500 mm in length from the wound bobbin again, placed it on a flat plate, and carried out surface observation and width measuremen...

Embodiment 2

[0154] Using a reinforcing fiber tape material manufacturing device, 6 carbon fiber strands pulled out from the bobbin while adjusting the width to 4.0 mm in width are pulled out while paralleling each other with a gap of 0.3 mm. In addition, The same operation as in Example 1 was carried out to obtain a reinforcing fiber tape material in which a nonwoven fabric and a plurality of carbon fiber strands were integrated. Surface observation after winding, width measurement, and a test of pressing against a flat plate with a roller at room temperature and 80° C. resulted in the same results as in Example 1.

Embodiment 3

[0185]

[0186] As the reinforcing fiber bundle, Toray Co., Ltd.-manufactured reinforcing fiber "Torayca" (registered trademark) T800SC subjected to sizing treatment in advance was used, and the number of reinforcing fiber filaments was 24,000 (N=24K).

[0187]

[0188] Using a reinforcing fiber tape material manufacturing device, a reinforcing fiber bundle with a width of W' = 8 mm and a number of filaments N [K] = 24 (N / W = 3) is pulled out from a bobbin, and the width is narrowed without dividing while adjusting the thickness. Cut to obtain a bundle of carbon fiber strands with a width of W=4.0mm (the number of filaments N=24[K], N / W=6, the thickness T1=332 μm at the end, the thickness T2=293 μm at the center, and the other end Thickness T3 = 320 μm, the ratio of the thickness of the end portion and the central portion T1 / T2 = 113% and T3 / T2 = 109%). Then, heat-melting resin particles (average particle diameter: 0.2 mm) having a softening point of 80° C. were scattered ...

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Abstract

The present invention relates to a reinforced fiber tape material for resin injection molding, a method for manufacturing the same, a reinforced fiber laminate using the reinforced fiber tape material, and a fiber-reinforced resin molded article. The reinforced fiber tape material having a reinforced fiber wire harness. The belt material is formed by mutually constraining and integrating reinforcing fibers constituting a reinforcing fiber bundle or / and a plurality of reinforcing fiber bundles through the resin material arranged on at least one surface of the reinforcing fiber bundle and a resin material arranged on one surface and having a softening point different from that of the resin material. The two resin materials have matrix resin permeability. Particularly, when a sheet base material and a preformed body are manufactured by a fiber placement method, the sheet base material and the preformed body can be easily fixed and configured on a tool, and the resin flowing time in a resin injection process can be shortened. Also provided are the reinforced fiber tape material which has good formability and good resin impregnation properties during molding in a subsequent step; and alaminated sheet substrate and a molded article of the reinforced fiber tape material.

Description

technical field [0001] The present invention relates to a reinforcing fiber tape material mainly used in a fiber laying method, a method for producing the reinforcing fiber tape material, a reinforcing fiber laminate and a fiber reinforced resin molded body in which the reinforcing fiber tape material is arranged / laminated. Background technique [0002] Fiber reinforced plastics (Fiber Reinforced Plastic: FRP) including reinforcing fibers and resins are used in aviation, spaceflight, and automobiles due to their light weight and high strength. As a molding method that realizes both productivity and high strength of FRP, for example, a resin transfer molding method (Resin Transfer Molding: RTM), VaRTM molding method (vacuum-assisted resin transfer molding method, Vacuum-assisted Resin Transfer Molding method, etc.) ) and the like, followed by a molding method in which the resin is impregnated and cured in the reinforcing fiber laminate. The RTM molding method is a molding me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/16B29C70/50B32B5/26B32B27/12
CPCB29C70/20B29C70/504B32B5/024B32B2605/12B32B2262/105B32B2260/023B32B5/26B32B5/026B32B2262/106B32B2262/103B32B2262/0269B32B2250/20B32B2605/00B32B5/022B32B2605/18B32B2260/046B32B2262/101B32B2262/14B29C70/12B29C70/08B29C70/465B29C70/506B29B15/12B29B15/14B29C70/345
Inventor 神田守佐藤将之
Owner TORAY IND INC
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