Method of making foam-filled cellular structures

Details Method of making foam-filled cellular structures Method of making foam-filled cellular structures

1988-10-11

1990-10-23

Silbaugh, Jan H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264267, 264321, B29C 4318

Patent

active

049649361

ABSTRACT:
A non-flexible, non-resilient recurable cellular material, prepared by exposing cured polyimide foam to an atmosphere of steam at an elevated pressure, is introduced into a honeycomb or like structure so that the cells are at least partially filled with the recurable cellular material. The cellular material is then cured while contained within such cells to form a composite polyimide foam-containing structure. Laminates may be applied to either or both faces of the polyimide foam-containing cellular structure. These articles possess enhanced strength, yet are lightweight and flame resistant, and thus useful for structural, vibration damping and thermal insulation applications.

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