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Epoxy resin composition for resin transfer molding of fiber-einforced composite material, fiber-reinforced composite material, and method for producing same

A technology of epoxy resin and composite material, applied in the field of epoxy resin composition and fiber reinforced composite material, can solve the problems of stagnation and productivity obstacles, and achieve the effects of excellent operability, high heat resistance and excellent impregnation.

Inactive Publication Date: 2013-08-14
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, the major issue for the popularization of carbon fiber composite materials for automobiles is productivity, and productivity has become an obstacle, and it has stopped being used only in some high-end cars.

Method used

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  • Epoxy resin composition for resin transfer molding of fiber-einforced composite material, fiber-reinforced composite material, and method for producing same
  • Epoxy resin composition for resin transfer molding of fiber-einforced composite material, fiber-reinforced composite material, and method for producing same

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Experimental program
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Embodiment 1～12）

[0159] As described above, epoxy resin compositions were prepared with the compositions shown in Tables 1 and 2, and viscosity measurement and dielectric constant measurement were performed. Also, using the prepared epoxy resin composition, as described above, a resin-cured board and a post-cured resin board were produced, and the glass transition temperature Tg and the reaction rate were measured.

[0160] As shown in Tables 1 and 2, since the curing agent and the catalyst in the epoxy resin composition of the present invention are low-viscosity liquids, the mixing workability is excellent. In addition, due to the low initial viscosity of the resin composition, at the molding temperature (110°C) by t 10 The indicated flow time is long, so it has excellent impregnation and filling properties for reinforcing fibers. And it can be seen that by t 90 The demoulding time indicated is short, so t 90 / t 10 The value of is less than 3, which can effectively shorten the molding tim...

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Abstract

An epoxy resin composition for RTM molding of a fiber-reinforced composite material includes [A] to [D] below, wherein [A] / [B], which is a blend mass ratio of [A] to [B], is in the range of 55 / 45 to 95 / 5: [A] a multifunctional epoxy resin that is liquid at normal temperature or has a softening point of 65° C. or lower, the multifunctional epoxy resin being at least one selected from phenol novolac epoxy resin, cresol novolac epoxy resin, and triphenylmethane epoxy resin; [B] an alicyclic epoxy resin; [C] an acid anhydride curing agent; and [D] a curing accelerator.

Description

technical field [0001] The present invention relates to an epoxy resin composition used in a fiber-reinforced composite material and a fiber-reinforced composite material using the same. Background technique [0002] Fiber-reinforced composite materials composed of reinforcing fibers and matrix resins are being used in the fields of aerospace, sports, general industry, etc. due to the material design that takes advantage of the advantages of reinforcing fibers and matrix resins. [0003] As the reinforcing fiber, glass fiber, aramid fiber, carbon fiber, boron fiber, etc. are used. As the matrix resin, either a thermosetting resin or a thermoplastic resin is used, and a thermosetting resin that is easily impregnated into the reinforcing fibers is often used. As the thermosetting resin, epoxy resin, unsaturated polyester resin, vinyl ester resin, phenol resin, bismaleimide resin, cyanate resin, etc. are used. [0004] In the manufacture of fiber-reinforced composite material...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08G59/20C08K7/06C08L63/00
CPCC08L63/04C08G59/38C08K7/02C08G59/3218C08L63/00C08J2363/00C08J5/24C08G59/42C08G59/20C08K7/06C08J5/06B29C45/0005B29C45/02
Inventor 冈英树富冈伸之本田史郎
Owner TORAY IND INC
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