Development of a low void polyimide resin for autoclave processing of glass and graphite reinforced composites.Experimental studies are described in which new A-type polyimide prepolymer chemical modifications were investigated with the aim of increasing the melt phase duration and temperature range permitting autoclave processing, yet retaining the addition-type cure mechanism required for low-void content composites. Several modification candidates were examined, and one specific formulation was selected for detailed investigation. This A-type polyimide prepolymer formulation is shown to possess the desired characteristics.
Document ID
19720027063
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Vaughan, R. W.
Jones, R. J.
Sheppard, C. H.
Burns, E. A. (TRW Systems Group Redondo Beach, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Subject Category
Materials, Nonmetallic
Meeting Information
Meeting: Space shuttle materials; Proceedings of the National Technical Conference