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Epoxy resin composition, fiber-reinforced composite material and method for producing the same

An epoxy resin and composite material technology, which is applied in the field of liquid epoxy resin composition and the manufacture of fiber reinforced composite materials, can solve the problems of strong coloring, unsuitability for the production of large-scale molded products, and high viscosity of the resin composition, and achieves the surface Small unevenness, excellent surface tone and filling, and fewer pinhole defects

Active Publication Date: 2009-04-08
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this example, the viscosity of the resin composition is high, which is not suitable for producing large-sized molded products, and the coloring is strong, so there is a problem with the designability of molded products (for example, see Patent Document 3)

Method used

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  • Epoxy resin composition, fiber-reinforced composite material and method for producing the same
  • Epoxy resin composition, fiber-reinforced composite material and method for producing the same
  • Epoxy resin composition, fiber-reinforced composite material and method for producing the same

Examples

Experimental program
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Effect test

Embodiment 1～11

[0223] As shown in Table 1, the epoxy resin composition of the present invention is under molding temperature (100 ℃), t 10 Indicates the long flowable time, t 90 The demoulding time indicated is short, so t 90 / t 10 When it is 3 or less, in the molding of the fiber-reinforced composite material, the filling property to the fiber base material is excellent, and it is extremely effective in shortening the molding time. In addition, the molded cured product is also excellent in color tone, and is preferably used for automotive parts, sporting goods, etc., which utilize reinforcing fibers for design. In addition, the fiber-reinforced composite material of the present invention using the epoxy resin composition has excellent mechanical properties and well-controlled heat resistance (glass transition temperature), and good filling properties even when producing large molded products. Pore ​​defects were also few, and the appearance (surface unevenness, color tone) was also good....

Embodiment 12～15

[0226] Table 2 shows examples of molding fiber-reinforced composite materials under molding conditions other than a temperature of 100° C. and a curing time of 20 minutes. Note that the molding temperature and curing time are as shown in Table 2, and the molding properties, cured resin properties, and composite material properties are also values ​​under the molding conditions shown in Table 2. As shown in Table 2, since the epoxy resin composition of the present invention has a long flow time and a short release time even at a molding temperature other than 100°C, when molding a fiber-reinforced composite material, Extremely effective in filling fibrous substrates and reducing molding time.

[0227]

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Abstract

Disclosed is an epoxy resin composition for fiber-reinforced composite materials which contains an epoxy resin, an acid anhydride curing agent and an organophosphorus compound. The epoxy resin composition is characterized in that the organophosphorus compound is contained therein in an amount of 0.2-2% by weight in terms of phosphorus atoms relative to the total epoxy resin composition, a nitrogen-containing compounds is contained therein in an amount of 0-0.5% by weight in terms of nitrogen atoms relative to the total epoxy resin composition, and a polymerizable unsaturated group-containing compound is contained therein in an amount of 0-5% by weight relative to the total epoxy resin composition. Also disclosed is an automobile component using such an epoxy resin composition. This epoxy resin composition for fiber-reinforced composite materials can be molded in a short time and a cured product thereof is hardly colored. Consequently, this epoxy resin composition enables to obtain a fiber-reinforced composite material which is excellent in appearance and surface smoothness.

Description

technical field [0001] The present invention relates to an epoxy resin composition suitable for a fiber-reinforced composite material, a fiber-reinforced composite material using the epoxy resin composition, and to injecting a liquid epoxy resin composition into a reinforcing fiber base material arranged in a mold , a manufacturing method for manufacturing fiber-reinforced composite materials by heating and curing. Background technique [0002] Fiber-reinforced composite materials composed of reinforcing fibers and matrix resins are being used in the aerospace, sports, and general industrial fields because material designs that take full advantage of the advantages of reinforcing fibers and matrix resins can be realized. [0003] As the reinforcing fiber, glass fiber, aramid fiber, carbon fiber, boron fiber, or the like can be used. As the matrix resin, any of thermosetting resins and thermoplastic resins can be used, but thermosetting resins that are easily impregnated int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/42C08J5/24C08K5/49
CPCC08J5/24C08G59/42C08J2363/00C08L63/00C08G59/688C08K5/50C08K5/49C08K7/02C08J5/04
Inventor 本田史郎田中刚
Owner TORAY IND INC
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