One component room temperature stable epoxy resin compositions f

Details One component room temperature stable epoxy resin compositions f One component room temperature stable epoxy resin compositions f

1997-09-19

1999-08-24

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264511, 264571, 264257, 264258, 264236, 264347, B29C 4502, B29C 4514, B29C 7028

Patent

active

059421827

ABSTRACT:
The present invention relates to a process for forming a composite article in a resin transfer molding system. The process includes the steps of providing a fiber preform in a mold, injecting a matrix resin into the mold, allowing the matrix resin to impregnate the fiber preform, and heating the resin impregnated preform to at least about 200.degree. F. for sufficient time to produce at least a partially cured solid article. The matrix resin comprises 1) a liquid epoxy resin component selected from the group of a phenolic novolac epoxy resin,, a cycloaliphatic epoxy resin and mixtures thereof; 2) an epoxy diluent; and 3) at least one latent curing agent that cures only when subjected a temperature of at least about 200.degree. F. The partially cured solid article may be subjected to post-curing operations to produce a final composite article. The present invention also relates to a process for forming a composite article in a vacuum assisted resin transfer mold system.

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Sue et al., Novel Tough RTM Epoxies for Aerospace Composites Applications, pp. 769-770.
Preliminary Technical Bulletin, Shell Chemicals Co., Epoxy Research Resin RSL-1985*/Epon Cursing Agent.RTM. W, pp. 1-8, High Performance Aerospace Resin System for Use in Resin Transfer Molding-Filament Winding Processes
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