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Composite yarn fabric and method for producing fiber-reinforced resin molded article using same

A composite yarn and fabric technology, applied in textiles and papermaking, fabrics, yarns, etc., can solve the problem of high viscosity

Pending Publication Date: 2021-08-17
NITTO BOSEIKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the above-mentioned thermoplastic resin has a high viscosity when it is melted, the melted thermoplastic resin in the above-mentioned thermoplastic prepreg is difficult to be impregnated between the inorganic fibers, and there is a problem that spaces (voids) are likely to be generated.

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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  • Composite yarn fabric and method for producing fiber-reinforced resin molded article using same
  • Composite yarn fabric and method for producing fiber-reinforced resin molded article using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052]In this embodiment, at first, with a twisting machine, one bundled E glass fiber yarn with a yarn quality of 33.7tex of 200 monofilaments with a fiber diameter of 9 μm and one MFR of 40 g / 10 minutes, obtained by melting point Polyamide resin yarn with a yarn quality of 23.3tex made of polyamide resin (PA6; manufactured by Ube Industries, Ltd.; product name: UBE1013B) at 220°C is twisted and twisted 3.8 times / 25mm And made composite yarn. The mass ratio of the said E glass fiber yarn with respect to the total mass of the said composite yarn was 59 mass %.

[0053] Next, the above-mentioned E glass fiber yarn was used as a warp, and the above-mentioned composite yarn obtained in this example was used as a weft, and weaving was performed so that the warp weaving density was 42 yarns / 25 mm and the weft yarn weaving density was 32 yarns / 25 mm. , to obtain a plain weave composite yarn fabric.

[0054] Next, the composite yarn fabric obtained in this example was heated to 250...

Embodiment 2

[0057] In this example, except for the use of one piece of polyamide with a yarn quality of 23.3tex and a polyamide resin (PA6; manufactured by DSM Co., Ltd.; product name: Novamid 1007J) with a melting point of 225° C. and a MFR of 84 g / 10 min. Except for the resin yarn, the rest were made in the same manner as in Example 1 to obtain a composite yarn fabric.

[0058] Next, the composite yarn fabric obtained in this example was heated to 250° C., and pressed under a pressure of 3 MPa for 1 minute to manufacture a plate-shaped molded product, and its formability was evaluated in exactly the same manner as in Example 1, and The flexural modulus of elasticity of molded products was measured. The results are shown in Table 1.

Embodiment 3

[0060] In this example, except for the use of one yarn made of polyphenylene sulfide (PPS) resin (manufactured by Toray Co., Ltd.; product name: TORELINA E2080) with an MFR of 90 g / 10 minutes and a melting point of 280° C. Except the PPS resin yarn of 23.3tex, all the other with the mode identical with embodiment 1, have made composite yarn fabric.

[0061] Next, the composite silk fabric obtained in this example was heated to 320° C., and pressed under a pressure of 3 MPa for 1 minute to produce a plate-shaped molded product, and its moldability was evaluated in exactly the same manner as in Example 1. The flexural modulus of elasticity of the molded product was also measured. The results are shown in Table 1.

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Abstract

Provided is a composite yarn fabric that can be used suitably as a material for a fiber-reinforced resin molded article. This composite yarn fabric is obtained by weaving in which composite yarn obtained by twisting together an inorganic multifilament yarn and a thermoplastic resin yarn is used in at least one of the warp and the weft. The inorganic multifilament yarn has a mass of 10-65 tex, and the monofilaments constituting the inorganic multifilament yarn have a fiber diameter of 6.6-9.5 [nu]m. The melt flow rate of the thermoplastic resin constituting the thermoplastic resin yarn is 34-100 g / 10 min. The ratio of the mass of the inorganic multifilament yarn to the total mass of the composite yarn is 40-90 mass%.

Description

technical field [0001] The present invention relates to a composite yarn fabric and a method for producing a fiber-reinforced resin molded article using the composite yarn fabric. Background technique [0002] Conventionally, fiber-reinforced resin molded articles obtained by heating thermoplastic prepregs and molding them under pressure have been used as lightweight materials used in aircraft, automobiles, general industrial machinery, and the like. The thermoplastic prepreg is formed by melting the thermoplastic resin of a thermoplastic resin film formed by laminating and heating an inorganic fiber fabric and a thermoplastic resin film, and impregnating it between the inorganic fibers constituting the inorganic fiber fabric. [0003] However, since the thermoplastic resin has a high viscosity when melted, it is difficult for the melted thermoplastic resin in the thermoplastic prepreg to impregnate between inorganic fibers, and spaces (voids) tend to be generated. [0004]...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B11/16D02G3/04D02G3/18D03D1/00D03D15/00D03D15/513D03D15/292B29K105/10
CPCD03D1/00B29C70/465D10B2331/02D03D15/267D03D15/47D03D15/587D10B2505/02D02G3/402D10B2101/06D03D15/573D03D15/283D10B2401/041D02G3/04B29K2077/00B29K2105/0845B29K2309/08
Inventor 伊藤洋尚佐藤令佳坂田淳也
Owner NITTO BOSEIKI CO LTD
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