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Fibre-reinforced thermoplastic resin moulded article, and fibre-reinforced thermoplastic resin moulding material

A thermoplastic resin and enhanced thermoplastic technology, applied in the field of fiber-reinforced thermoplastic resin moldings and fiber-reinforced thermoplastic resin molding materials, can solve the problems of reduced impact strength and achieve excellent impact strength and high reinforcement effect

Active Publication Date: 2018-06-08
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As a method of improving the mechanical properties of a carbon fiber-reinforced thermoplastic resin molded article, for example, a method of increasing the content of carbon fibers can be mentioned, but when the carbon fiber content is increased, carbon fibers tend to exist unevenly in the carbon fiber-reinforced thermoplastic resin molded article, so it often causes reduction in impact strength

Method used

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  • Fibre-reinforced thermoplastic resin moulded article, and fibre-reinforced thermoplastic resin moulding material
  • Fibre-reinforced thermoplastic resin moulded article, and fibre-reinforced thermoplastic resin moulding material
  • Fibre-reinforced thermoplastic resin moulded article, and fibre-reinforced thermoplastic resin moulding material

Examples

Experimental program
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Effect test

Embodiment

[0195] Examples are shown below, and the present invention will be described more specifically, but the present invention is not limited to the description of these examples. First, methods for evaluating various characteristics used in this example will be described.

[0196] (1) Determination of melt viscosity

[0197] For the thermoplastic resins (C), (H), compounds (D) and (I) used in the respective examples and comparative examples, 200°C was measured with a viscoelasticity measuring instrument under the condition of 0.5 Hz using a 40 mm parallel plate when the melt viscosity.

[0198] (2) Measurement of the average fiber length of carbon fibers (A) and organic fibers (B) in molded articles and molded materials

[0199] On a hot stage set at 300°C, the molded product or molded material was heated in a state sandwiched between glass plates to form a film and uniformly disperse it. The film in which carbon fibers (A) or organic fibers (B) were uniformly dispersed was obs...

reference example 1

[0226] (Reference example 1) Production of carbon fiber (A)

[0227] Spinning, sintering, and surface oxidation of a copolymer with polyacrylonitrile as the main component yielded a total of 24,000 single filaments, a single fiber diameter of 7 μm, a mass per unit length of 1.6 g / m, and a specific gravity of 1.8g / cm 3 , A continuous carbon fiber having a surface oxygen concentration ratio [O / C] of 0.2. The strand tensile strength of this continuous carbon fiber was 4,880 MPa, and the strand tensile modulus was 225 GPa. Next, polyglycerol polyglycidyl ether, which is a polyfunctional compound, was dissolved in water in an amount of 2% by weight to prepare a sizing agent mother solution, and the sizing agent was applied to carbon fibers by a dipping method, followed by drying at 230°C. The amount of sizing agent attached to the carbon fibers thus obtained was 1.0% by weight.

reference example 2

[0228] (Reference example 2) Organic fiber (B)

[0229] Polyester (PET) fiber 1: "TETORON" (registered trademark) 56T-36-262 manufactured by Toray Co., Ltd. (single fiber fineness: 1.6 dtex, fiber diameter: 12 μm, melting point: 260° C.) was used. The elongation at break was measured by the method described in the above (5), and it was 15%.

[0230] Polyester (PET) fiber 2: "TETORON" (registered trademark) 56T-72-262 manufactured by Toray Co., Ltd. (single fiber fineness: 0.78 dtex, fiber diameter: 8 μm, melting point: 260° C.) was used. The elongation at break was measured by the method described in the above (5), and it was 15%.

[0231] Polyester (PET) fiber 3: "TETORON" (registered trademark) 33T-288-262 manufactured by Toray Co., Ltd. (single fiber fineness: 0.11 dtex, fiber diameter: 3 µm, melting point: 260° C.) was used. The elongation at break was measured by the method described in the above (5), and it was 15%.

[0232] Polyester (PET) fiber 4: "TETORON" (registe...

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Abstract

This fibre-reinforced thermoplastic resin moulded article includes, with respect to a total of 100 parts by weight of carbon fibres (A), organic fibres (B), and a thermoplastic resin (C), 5-45 parts by weight of the carbon fibres (A), 1-45 parts by weight of the organic fibres (B), and 10-94 parts by weight of the thermoplastic resin (C). The average fibre length (LA) of the carbon fibres (A) in the fibre-reinforced thermoplastic resin moulded article is 0.3-3 mm. The average fibre length (LB) of the organic fibres (B) in the fibre-reinforced thermoplastic resin moulded article is 0.5-5 mm. The number average fibre diameter (dB) is 1-10 [mu]m. Accordingly, provided is a fibre-reinforced thermoplastic resin moulded article exhibiting excellent impact strength.

Description

technical field [0001] The present invention relates to a fiber-reinforced thermoplastic resin molded article and a fiber-reinforced thermoplastic resin molded material comprising carbon fibers and organic fibers. Background technique [0002] Molded products composed of reinforcing fibers and thermoplastic resins are widely used in sporting goods, aerospace, and general industrial applications due to their light weight and excellent mechanical properties. Examples of the reinforcing fibers include metal fibers such as aluminum fibers and stainless steel fibers, inorganic fibers such as silicon carbide fibers and carbon fibers, organic fibers such as aramid fibers, and polyparaphenylenebenzobisoxazole (PBO) fibers. From the viewpoint of the balance of specific strength, specific rigidity, and lightness, carbon fibers are preferable, and among them, polyacrylonitrile-based carbon fibers are preferably used. [0003] As a method of improving the mechanical properties of a car...

Claims

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Application Information

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IPC IPC(8): C08J5/04C08K7/06C08L101/00B29B15/14
CPCC08L101/00C08J5/047C08J5/06C08J2423/26C08J2323/12C08J2369/00C08J5/042C08J5/046C08J2300/22B29B7/90B29B9/14B29B15/12B29B7/48B29B7/88B29B7/726B29B9/06C08L23/12C08L51/06C08K7/06C08K7/02B29B15/14C08K2201/004C08K2201/003C08K2201/016C08J2467/00C08J2477/00C08J2481/04
Inventor 三辻祐树平田慎土谷敦岐
Owner TORAY IND INC
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