Compliant thermoset matrix, fiber reinforced, syntactic foam san

Details Compliant thermoset matrix, fiber reinforced, syntactic foam san Compliant thermoset matrix, fiber reinforced, syntactic foam san

1998-04-28

1999-10-19

Copenheaver, Blaine

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

156221, 156222, 1563073, 156330, 264321, 26433111, 264DIG4, 4282991, 4283014, 4283191, B29C 5304, B32B 522

Patent

active

059686413

ABSTRACT:
A composite laminate structure, and a method for its fabrication. The structure includes a syntactic core layer (10) including an epoxy system catalyzed by a Lewis acid, and two face skin layers (12), each of which has multiple graphite fibers laid up in a polycyanate matrix resin catalyzed by cobalt. After thermal curing, the laminate structure has the unusual, but highly desirable property that it is compliant enough to be conformed at room temperature to a different shape, without damage to the structure. The structure may be later conformed to other shapes or conformed to its original shape, again without damage. Structures of unusual shapes can, therefore, be easily fabricated from sheets of the laminate material formed in one (1) convenient initial shape, such as a flat panel.

REFERENCES:
patent: 4092296 (1978-05-01), Skiff
patent: 5248360 (1993-09-01), Jones, Jr. et al.
patent: 5520976 (1996-05-01), Giannetti et al.
patent: 5665461 (1997-09-01), Wong et al.

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