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Fiber-reinforced plastic and method for producing same

一种纤维增强塑料、制造方法的技术，应用在扁平制品、其他家里用具、家里用具等方向，能够解决结构材机械物性不充分、增强纤维和热塑性树脂流动性不会充分提高、增强纤维短等问题

Active Publication Date: 2019-02-15
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since Vf / (100-Vf) is constant, tanδ' hardly changes means that the value of tanδ itself hardly changes, but if the value of tanδ is small in the temperature range above the melting point, the property as an elastomer is large, If heating is performed during forming, the fluidity of the reinforcing fiber and thermoplastic resin will not be sufficiently improved, and the reinforcing fiber will be cut and shortened during forming, so the mechanical properties of the structural material after forming may be insufficient.

Method used

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  • Fiber-reinforced plastic and method for producing same
  • Fiber-reinforced plastic and method for producing same
  • Fiber-reinforced plastic and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0798] [Production Example 1: Production of prepreg base material (X-1)]

[0799] The PAN-based carbon fiber (PYROFIL CF tow made by Mitsubishi Rayon, model: TR 50S15L, carbon fiber diameter 7μm, number of filaments: 15,000, tow weight per unit area: 1.0g / m, specific gravity 1.82) in one direction and flat Aligned in a shape to form a unit area weight of 72g / m 2 Of fiber pieces. The basis weight formed by acid-modified polypropylene resin (Modic manufactured by Mitsubishi Chemical Corporation, model: P958V, MFR: 50, specific gravity 0.91) is 36 g / m 2 The fiber sheet is sandwiched from both sides, and heated and pressurized through a calender roll several times to impregnate the resin in the fiber sheet to produce a fiber volume content (Vf) of 33% by volume and a weight per unit area of ​​149g / m 2 , A prepreg substrate (X-1) with a theoretical thickness of 123μm.

manufacture example 2

[0800] [Production Example 2: Production of prepreg base material (X-2)]

[0801] The carbon fiber (PYROFIL CF tow made by Mitsubishi Rayon Co., Ltd., model: TR 50S15L, carbon fiber diameter 7μm, number of filaments: 15,000, tow weight per unit area: 1.0g / m, specific gravity 1.82) in one direction and flat Aligned to make a unit area weight of 150g / m 2 Of fiber pieces. The basis weight formed by acid-modified polypropylene resin (Modic manufactured by Mitsubishi Chemical Corporation, model: P958V, MFR: 50, specific gravity 0.91) is 72 g / m 2 The film, the fiber sheet is clamped from both sides. Then, they were heated and pressurized twice through a calender roll to semi-impregnate the resin on the surface of the fiber sheet to produce a porosity of 35%, a fiber volume content (Vf) of 34% by volume, and a basis weight of 296g / m 2 , A prepreg base material (X-2) with a theoretical thickness of 242μm.

manufacture example 3

[0802] [Production Example 3: Production of prepreg base material (X-3)]

[0803] As the single fiber, a tow using carbon fibers (PYROFIL CF tow manufactured by Mitsubishi Rayon Corporation, model: TRW40 50L, single fiber diameter: 7 μm, single fiber roundness: 0.9, number of filaments: 50,000, Tow weight per unit area: 3.75 g / m), except that the same procedure as in Production Example 2 was performed to produce a porosity of 35%, a fiber volume content (Vf) of 34 vol%, and a weight per unit area of ​​296 g / m 2 , A prepreg substrate (X-3) with a theoretical thickness of 242μm.

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Abstract

Provided are a fiber-reinforced plastic producing method capable of easily producing a fiber-reinforced plastic in which swelling and warpage are less likely to occur and of which excellent mechanicalcharacteristics and isotropy are ensured, and a fiber-reinforced plastic in which swelling and warpage are suppressed from occurring. The fiber-reinforced plastic producing method has a step for obtaining a material (A) including a prepreg base material (12) in which a region (B) (17), where reinforcing fibers (13) pulled and aligned in one direction are impregnated with a matrix resin (14) and aplurality of cuts (b) (15) are formed, and a region (C) (18), where a plurality of cuts (c) (16) are formed, are alternately formed in a direction orthogonal to a fiber axis of the reinforcing fiber(13), a step for hot-pressing the material (A) while moving the material (A) under specific conditions, and a step for cooling the pressed material (A) to obtain the fiber-reinforced plastic.

Description

Technical field [0001] The present invention relates to fiber-reinforced plastic and a method of manufacturing the same. [0002] This application is based on Japanese Patent Application No. 2015-159082 filed in Japan on August 11, 2015, Japanese Patent Application No. 2015-159081 filed in Japan on August 11, 2015, and Japan filed in Japan on August 11, 2015 Special Application No. 2015-158699, Japanese Special Application No. 2015-154209 filed in Japan on August 4, 2015, and Japanese Special Application No. 2015-156292 filed in Japan on August 6, 2015 are claims of priority and will Its content is quoted here. Background technique [0003] In various fields such as aircraft components, automotive components, wind turbine components for wind power generation, and sports equipment, structural materials obtained by forming sheet-shaped fiber-reinforced plastics by press molding are widely used. The above-mentioned fiber-reinforced plastic is formed, for example, by laminating and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/34B29B11/16B29C43/22B29K105/08
CPCB29C43/34B29B11/16B29C43/22B29K2105/0872B29C70/50B29C70/545B29C70/504B29C70/14B29L2007/002B29K2105/0881B29C43/48B29C43/52B29C2043/483B29C2043/486B29C2793/0054B29C2793/0081B29B15/08B29C2793/0036B29C43/003B29C70/205B29C70/508
Inventor 富冈正雄石川健小林贵幸
Owner MITSUBISHI CHEM CORP
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