Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
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.
REFERENCES:
patent: 3784647 (1974-01-01), Fleming et al.
patent: 4654100 (1987-03-01), Yats et al.
patent: 5011721 (1991-04-01), Decker et al.
patent: 5315462 (1994-05-01), Ohkubo et al.
patent: 5356499 (1994-10-01), Decker et al.
patent: 5369192 (1994-11-01), Ko et al.
patent: 5439635 (1995-08-01), Seemann
patent: 5480603 (1996-01-01), Lopez et al.
patent: 5567499 (1996-10-01), Cundiff et al.
39th International SAMPE Symposium, Apr. 11-14, 1994, "A New Toughened Epoxy Resin for Resin Transfer Molding Applications", Lee et al., pp. 133-144.
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
26.sup.th International SAMPE Technical Conference, Oct. 17-20, 1994, "Process Tolerant Resin Transfer Molding Products", McMillan III, pp. 423-436.
37.sup.th International SAMPE Symposium, Mar. 9-12, 1992, A New High Temperature Epoxy System for RTM Application, Wang et al, pp. 482-492.
Hoge James E.
Miyazaki Teruko U.
Ciba Specialty Chemicals Corporation
Crichton David R.
Vargot Mathieu D.
LandOfFree
One component room temperature stable epoxy resin compositions f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with One component room temperature stable epoxy resin compositions f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One component room temperature stable epoxy resin compositions f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-463921