Coating for gasifiable carbon-graphite fibers

US4351878A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Jan Harper-Tervet · Palmdale, US
• Warren L. Dowler · Sierra Madre, US
• Shiao-Ping S. Yen · Altadena, US
• William A. Mueller · Glendale, US

Key dates

• Filing date: Jun 30, 1980
• Grant date: Sep 28, 1982
• Expiry date: Jun 30, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2964
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A thin, uniform, firmly adherent coating of metal gasification catalyst is applied to a carbon-graphite fiber by first coating the fiber with a film-forming polymer containing functional moieties capable of reaction with the catalytic metal ions. Multivalent metal cations such as calcium cross-link the polymer such as a polyacrylic acid to insolubilize the film by forming catalytic metal macro-salt links between adjacent polymer chains. The coated fibers are used as reinforcement for resin composites and will gasify upon combustion without evolving conductive airborne fragments.