Accession Number : ADA305203

Title :   Chemical Composition and Processing Specifications for Air Force Advanced Composite Matrix Materials.

Descriptive Note : Quarterly progress rept. no. 1,

Corporate Author : GRUMMAN AEROSPACE CORP BETHPAGE NY

PDF Url : ADA305203

Report Date : 26 JAN 1978

Pagination or Media Count : 13

Abstract : Advanced composite structures for production aircraft manufactured over an extended time span must be made from prepregs having uniformly consistent matrix resins to ensure the reliability, reproducibility, and durability of the composite structures. Possible variations in the matrix systems can occur due to changes in the purity and concentration of the various ingredients and their processing. These variations may not be detected by laminate and prepreg testing required by current material procurement specifications. However, a variety of analytical methods are currently available to characterize or 'fingerprint' resin systems. Thus, improved reliability and reproducibility of advanced composite prepreg materials can be realized by expanding existing material procurement specifications to include chemical composition and processing specifications for the matrix systems. The objective of this program is to develop, establish, and implement compositional and processing specifications for advanced composite matrix materials used on Air Force weapons systems. The specific materials to be studied under this program are the Hercules 3501-5A/A-S graphite/epoxy and AVCO 5505 boron/epoxy prepregs. (MM)

Descriptors :   *EPOXY RESINS, *GRAPHITE EPOXY COMPOSITES, *BORON COMPOUNDS, AIR FORCE, AIRCRAFT, WEAPON SYSTEMS, POLYMERS, COMPOSITE MATERIALS, COMPOSITE STRUCTURES, MATRIX MATERIALS, CHEMICAL COMPOSITION, PURITY, BRITTLENESS, DUCTILITY, CURING, PREPREGS, VISCOSITY, HARDENING, CHEMICAL ANALYSIS.

Subject Categories : Laminates and Composite Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE