Accession Number : ADD012782

Title :   Silicon Nitride Whisker Reinforced Glass Matrix Composites.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Layden,George K

Report Date : 24 Feb 1987

Pagination or Media Count : 14

Abstract : This invention relates to a fiber reinforced structural material. More specifically, this invention relates to a composite structure comprised of high strength silicon nitride whiskers in a glass matrix. Fiber reinforced organic matrix composites are widely used and accepted as structural materials because of their desirable attributes of high strength high modulii and low density. In general, most of these composites comprise an organic polymer matrix, such as an epoxy resin, a polyimide, a polycarbonate, or similar material. The matrices are reinforced with a wide variety of fibers including glass, carbon, graphite and boron. However, even the best of these composites are limited to an operational temperature below about 600% F (300 C).

Descriptors :   *PATENT APPLICATIONS, *COMPOSITE STRUCTURES, *MATRIX MATERIALS, *GLASS, *SILICON NITRIDES, *WHISKER COMPOSITES, *FIBER REINFORCED COMPOSITES, BORON, CONSTRUCTION MATERIALS, FIBER REINFORCEMENT, GRAPHITE, LOW DENSITY, ORGANIC MATERIALS, POLYMERS, POLYIMIDE RESINS, CARBON, EPOXY RESINS, HIGH STRENGTH, TEMPERATURE, POLYCARBONATES, CARBON, HIGH TEMPERATURE, SILICON CARBIDES

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE