Polyimide matrix, fiber reinforced composite article and method

Details Polyimide matrix, fiber reinforced composite article and method Polyimide matrix, fiber reinforced composite article and method

1985-01-28

1986-07-22

Lusignan, Michael R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156264, 1563075, 427289, 427370, 428408, 4284735, B32B 2734, B32B 2736, B32B 900, B32B 3100

Patent

active

046019456

ABSTRACT:
A method of making a fiber reinforced polyimide matrix composite article is described. The method comprises preparing an aqueous solution of a polyimide matrix material containing sufficient nonionic surfactant such that the surface tension of the solution is about 35 dynes per centimeter or lower. The solution is then coated onto the fibers and the coated fibers formed into tapes. The tapes are then dried, cut into predetermined shapes and laid one on top of the other to form a lay-up. The lay-up is then densified under heat and pressure forming a polyimide matrix composite article.

REFERENCES:
patent: 4049613 (1977-09-01), White
patent: 4073788 (1978-02-01), Peterson
patent: 4146668 (1979-03-01), Dorey et al.
patent: 4290929 (1981-09-01), McGregor et al.
patent: 4471022 (1984-09-01), McGregor et al.

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