Quality Control Developments for Graphite/PMR 15 Polyimide Composite Materials.
Abstract
Investigations were conducted to determine the cause and resolve the problem of the lot-to-lot and within lot variability of graphite/PMR-15 prepreg. The overall objective of the program was to obtain a manufacturing process and accept/reject criteria associated with the quality control of the monomer, resin and graphite prepreg preparation and storage. The program was divided into three technical phases; the first consisted of the evaluation of the chemical characterization data of tasks A-H; the second was directed at evaluating the processing conditions controlling the manufacture of PMR-15 resin and monomers; the third effort was directed at selecting the manufacturing conditions and demonstrating their reproducibility. Conclusions derived from the studies were that the new manufacturing procedures for the PMR-15 monomers and resin yielded prepreg from which excellent structural composites could be fabricated and that the prepreg could be manufactured reproducibly. jg p188
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1979
- Accession Number
- ADA306055
Entities
People
- C. H. Sheppard
- J. T. Hoggatt
- W. A. Symonds
Organizations
- Boeing