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Reinforcing fiber fabric substrate, preform, and fiber-reinforced composite material

A technology for reinforcing fibers and prefabricated parts, applied in the field of prefabricated parts and fiber-reinforced composite materials, can solve problems such as low adhesion, and achieve the effect of improving designability and excellent matrix resin impregnation.

Active Publication Date: 2016-07-06
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the binder used for the reinforcing fiber base is also a thermoplastic binder, the adhesiveness is low, and the reduction of the binder amount is limited.

Method used

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  • Reinforcing fiber fabric substrate, preform, and fiber-reinforced composite material
  • Reinforcing fiber fabric substrate, preform, and fiber-reinforced composite material
  • Reinforcing fiber fabric substrate, preform, and fiber-reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～9

[0183]

[0184] Based on the compounding ratio in Table 1, using the binder particles prepared as described above, the minimum viscosity was measured as described above under the heating conditions shown in Table 1. In addition, using the reinforcing fiber fabric base material shown in Table 1 dispersed with the binder particles, the preforms for the evaluation of the adhesive strength and the preforms for the evaluation of the matrix resin impregnation property were respectively produced as described above under the heating conditions shown in Table 1. pieces. The evaluation of the adhesive strength and the impregnation property of the liquid matrix resin were performed on each of the produced preforms. Then, the surface quality of the fiber-reinforced composite material molded to evaluate the impregnation property of the liquid matrix resin was evaluated as described above.

Embodiment 1

[0185] In Example 1, as shown in Table 1, the binder particles and the reinforcing fiber fabric are used to form a binder with a mass per unit area of ​​1 g / m 2 The reinforced fiber fabric base material combined in the above method was molded at a heating temperature of 100°C and a heating time of 10 minutes, thereby producing preforms and fiber-reinforced composite materials. The preform produced under this condition obtains excellent bonding strength, and the impregnation of the matrix resin and the surface design of the molded body are also excellent, wherein the above-mentioned binder particles are composed of solid bifunctional epoxy resin and solid multifunctional epoxy resin, Composed of imidazole curing catalyst, the particle size is 120 μm, the particle size distribution index is 1.5, the number of filaments of the above-mentioned reinforced fiber fabric is 24,000, and the mass per unit area of ​​the filament is 330g / m 2 .

Embodiment 2

[0186] In Example 2, as shown in Table 1, all the thermosetting resin components constituting the binder particles were solid multifunctional epoxy resins, and each preform and fiber-reinforced composite material were produced under the same conditions as in Example 1, and carried out. its evaluation. Since the crosslinking density of the binder after heating and curing becomes higher, the adhesive strength decreases, but sufficient adhesive strength is obtained, and the impregnation of the matrix resin and the surface design of the molded article are also excellent.

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Abstract

A reinforcing fiber fabric substrate having a binder containing a thermosetting resin [A] and a curing catalyst [B] at a basis weight of 0.1 g / m2-4 g / m2 on at least the surface of a reinforcing fiber fabric constructed of reinforcing fiber strands, wherein the reinforcing fiber fabric substrate has a heating temperature (T) in the 80-180 degrees centigrade range, and the adhesive strength becomes 0.5 N / 25 mm or higher at the heating temperature (T) between preform layers molded by laminating this reinforcing fiber fabric substrate at the heating temperature (T).

Description

technical field [0001] The present invention relates to a reinforcing fiber fabric base material provided with a binder, a preform and a fiber reinforced composite material using the same. Background technique [0002] Fiber-reinforced composite materials composed of reinforcing fibers and matrix resins enable material design that takes advantage of the advantages of reinforcing fibers and matrix resins, so their applications are expanding in the aerospace and other sports fields and general industrial fields. [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, but a thermosetting resin that is easily impregnated into the reinforcing fibers is often used. As the thermosetting resin, a resin composition in which a curing agent or a curing catalyst is added to epoxy resin, unsaturated polyester resin, vinyl ester resin, phenol resin, bismalei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/04B29B15/14
CPCC08J2363/00C08J2363/02C08J5/243C08J5/249B29B15/14C08J5/042C08K5/3445C08K5/49C08L63/00C08J2363/04C08J2463/02C08J2463/04C09D163/00D06M15/55
Inventor 平野公则富冈伸之本田史郎
Owner TORAY IND INC
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