Accession Number : ADA306169
Title : Evaluation of Newly Developed Reinforced Thermoplastic Composites.
Descriptive Note : Final rept. Jul 91-Dec 92,
Corporate Author : BOEING AEROSPACE CO SEATTLE WA
Personal Author(s) : Sheppard, C. H. ; House, E. E.
PDF Url : ADA306169
Report Date : DEC 1982
Pagination or Media Count : 79
Abstract : Five thermoplastic resins were screened for suitability as fluid resistant matrices for graphite composites. Additionally, the thermoplastic resins were screened for reformability after obtaining a full complement of mechanical properties. Three of these resins (NTS), (PPS) and (PEEK) were selected for further characterization. These materials were essentially insensitive to aircraft fluids and moisture and had mechanical properties equivalent to or better than state-of-the-art (SOTA) epoxies. The PPS system was similar to NTS and PEEK with regard to room temperature properties. It was better than NTS but worse than PEEK with regard to solvent resistance. At elevated temperature (i.e. greater than 220 degrees F) PPS was somewhat poorer than NTS and PEEK. To improve coupling between NTS and Kevlar fabric, polyimide sizings were evaluated, and yielded excellent results based on Flexural and short beam shear properties. The design properties of NTS on Kevlar and Kevlar/graphite hydrids were judged to be equivalent to those of currently used epoxy systems. (MM)
Descriptors : *THERMOPLASTIC RESINS, *REINFORCED PLASTICS, SHEAR PROPERTIES, AIRCRAFT, POLYMERS, COMPOSITE MATERIALS, HIGH TEMPERATURE, LAMINATES, POLYAMIDE PLASTICS, GRAPHITE, SENSITIVITY, QUALITY CONTROL, SOLVENTS, EPOXY COMPOUNDS, MOISTURE, POLYETHERS.
Subject Categories : Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE