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Thermoplastic resin-coated reinforcing fiber composite yarn, production method for said composite yarn, continuous fiber reinforced resin molding, and production method for composite material molding

A thermoplastic resin and reinforcing fiber technology, which is applied in the field of thermoplastic resin-coated reinforcing fiber composite yarns, can solve the problems such as the relationship between the surface roughness of continuous reinforcing fiber dense composite yarns and the relationship between resin impregnation and handleability.

Active Publication Date: 2020-09-15
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, these patent documents do not describe at all the relationship between the density of continuous reinforcing fiber bundles, the surface roughness of composite yarns, and resin impregnation and handling properties during molding.

Method used

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  • Thermoplastic resin-coated reinforcing fiber composite yarn, production method for said composite yarn, continuous fiber reinforced resin molding, and production method for composite material molding
  • Thermoplastic resin-coated reinforcing fiber composite yarn, production method for said composite yarn, continuous fiber reinforced resin molding, and production method for composite material molding
  • Thermoplastic resin-coated reinforcing fiber composite yarn, production method for said composite yarn, continuous fiber reinforced resin molding, and production method for composite material molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0562] The composite yarn was produced under the following conditions.

[0563] In this example, the wire gauge and resin temperature pressure gauge are not used.

[0564] [use material]

[0565] [continuous reinforcement fiber]

[0566] Continuous Reinforcement Fiber (A)

[0567] [Thermoplastic resin (coating resin)]

[0568] PA66 (1402S-011 manufactured by Asahi Kasei Co., Ltd.)

[0569] [Wrap condition]

[0570] Number of glass fiber bundles: 3

[0571] Inner diameter of hole A: 0.60mm

[0572] Inner diameter of hole B: 0.60mm

[0573] Distance between holes AB: 2.0mm

[0574] Resin extrusion speed: 40rpm

[0575] Coiling speed: 500m / min

[0576] Die temperature (barrel outlet and hole A, hole B temperature): 300 ° C

[0577] The set temperature of the barrel part of the extruder: 300°C

[0578] Wire tension: 0.2N

[0579] [Operation steps]

[0580] After passing the continuous reinforcing fibers through holes A and B, only the coiler was operated at a coiling...

Embodiment 1-2

[0584] [Wrap condition]

[0585] A composite yarn was produced in the same manner as in Example 1-1 except that the inner diameter of the hole A was 0.55 mm.

Embodiment 1-3

[0587] [Wrap condition]

[0588] A composite yarn was produced in the same manner as in Example 1-2 except that the yarn tension was 1.0N.

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Abstract

Provided are: a thermoplastic resin-coated reinforcing fiber composite yarn, which has excellent resin-impregnation properties during molding, with which moldings of excellent properties can be produced even in short-time molding, and which, as a yarn, has excellent softness and excellent handling in weaving and knitting; a production method for said composite yarn; a continuous fiber-reinforced resin molding; and a production method for a composite material molding.

Description

technical field [0001] The present invention relates to a thermoplastic resin-coated reinforcing fiber composite yarn, a method for producing the composite yarn, a continuous fiber-reinforced resin molded body, and a method for producing a composite material molded body. More specifically, the present invention relates to a composite yarn, which is a thermoplastic resin-coated reinforcing fiber composite yarn in which the entire periphery of a continuous reinforcing fiber bundle as a multifilament is coated with a thermoplastic resin, characterized in that The continuous reinforcing fibers are densely present in the bundle of the continuous reinforcing fibers and / or the surface roughness of the composite yarn is small, or the thermoplastic resin is composed of two or more resins; the present invention also relates to a method for producing the composite yarn, a resin A continuous fiber-reinforced resin molded body having high impregnation properties and high strength and rigid...

Claims

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Application Information

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IPC IPC(8): D02G3/36B29B11/16B29B15/14B29C48/15B29C48/34B29C70/16C08J5/04B29K105/18
CPCB29C48/34B29C70/16C08J5/04D02G3/36B29B15/122B29B7/90B29C48/154B29C48/2883B29C48/793
Inventor 小松原义彰秋山努安田和治荒谷悠介
Owner ASAHI KASEI KK
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