Cloth prepreg, process for producing the same and reinforcing fa

Details Cloth prepreg, process for producing the same and reinforcing fa Cloth prepreg, process for producing the same and reinforcing fa

1996-01-31

1997-05-06

Raimund, Christopher

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273899, 4285428, 442 71, B05D 302

Patent

active

056269161

ABSTRACT:
Disclosed is a process of producing 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 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: 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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