Cloth prepreg, process for producing the same and reinforcing fa

Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Fabric composed of a fiber or strand which is of specific...

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442175, 442179, B32B 516

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active

056164050

ABSTRACT:
Disclosed is a prepreg which is suited for preparing honeycomb sandwich panels, by which the formation of pores in the interlayer zones in the cured composite can be reduced. The prepreg of the present invention comprises a resin composition including an epoxy resin, a curing agent and a solid rubber, and a woven fabric made of reinforcing fibers, the meshes of the woven fabric being crushed such that said prepreg has a cover factor K.sub.p of 97-99.9%. Also disclosed is a reinforcing fabric comprising warps and woofs which are multifilament yarns made of carbon fibers, the widths W (mm) and finenesses D (d:denier) of the warp and woof satisfying the equation of:

REFERENCES:
patent: 4237175 (1980-12-01), Kobayashi
patent: 4977215 (1990-12-01), Gardner et al.
patent: 5217796 (1993-06-01), Kasai et al.
Database WPIL, Derwent Publications Ltd., London, GB: AN 90-258317[34] & JP-A-2 182 409 Matsushita Elec. Works 17 Jul. 1990 (Abstract).
Catalog from Nitto Boseki Co., Ltd. (1989).
JIS R 3413 (1963).

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