Accession Number : AD0164676

Title :   Treatment of High Modulus Graphite Fibers to Improve Their Bonding Characteristics.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Dauksys,Richard J.

Report Date : 02 APR 1974

Pagination or Media Count : 4

Abstract : The patent describes a method of improving the bonding characteristics of high modulus graphite fibers. It comprises treating the fibers with a solution of osmium or ruthenium tetroxide and sodium iodate in water, dioxane or aqueous dioxane; washing and thereafter drying the treated fibers; contacting the treated fibers with a solution of tin tetrachloride in 2-butanone; and heating the fibers to remove the 2-butanone solvent. When graphite fibers so treated are used as a reinforcing material for epoxy resins, a composite is obtained that has a greatly improved interlaminar shear strength.

Descriptors :   *Carbon fibers, *Patents, Graphite, Composite materials, Epoxy resins, Fiber reinforced composites, Bonding, Treatment, Solutions(Mixtures), Osmium compounds, Ruthenium compounds, Tetroxides, Sodium compounds, Iodates, Tin compounds, Chlorides

Subject Categories : Laminates and Composite Materials
      Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE