Accession Number : ADA305333

Title :   Development of Autoclave Moldable Addition-Type Polyimides.

Descriptive Note : Final rept. 12 Jun 74-30 Sep 75,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s) : Vaughan, R. W. ; Jones, R. J. ; O'Rell, M. K. ; Zakrzewski, G. A.

PDF Url : ADA305333

Report Date : JAN 1976

Pagination or Media Count : 60

Abstract : Chemistry and processing modifications of the poly(Diels Alder) polyimide (PDA) resin were performed to obtain structural composites suitable for 589K (600 deg F) service. This work demonstrated that the PDA resin formulation developed under Contract NAS 3-17770 is suitable for service at 589K (600 deg F) for up to 125 hours when used in combination with Hercules HTS graphite fiber. Sandwich panels were autoclave molded using PDA/HTS skins and polyimide/glass honeycomb core. Excellent adhesion between honeycomb core and the facing skins was demonstrated. Fabrication ease was demonstrated by autoclave molding three-quarter scale YF-12 wing panels. jg

Descriptors :   *MOLDS(FORMS), *POLYIMIDE RESINS, *AUTOCLAVES, MODIFICATION, POLYMERS, PROCESSING, FORMULATIONS, ADHESION, COMPOSITE STRUCTURES, GRAPHITE, CARBON FIBERS, GLASS, CHEMISTRY, PLASTICS, SKIN(STRUCTURAL), SANDWICH PANELS, HONEYCOMB CORES.

Subject Categories : Polymer Chemistry
      Laminates and Composite Materials
      Plastics
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE