Accession Number : AD0774373

Title :   Organic Matrix Toughening Additives for Composite Materials.

Descriptive Note : Technical rept.,


Personal Author(s) : Ferguson,Martin S.

Report Date : NOV 1973

Pagination or Media Count : 34

Abstract : Toughening of organic matrix material has been shown feasible using precipitated rubber particles as the discontinuous phase in epoxy resins. Physical tests consisted of recording the work required (as a measure of toughness) to separate a cantilevered cleavage specimen of epoxy matrix with and without these particles. Data is also presented from tensile tests to assess the extent of sacrifice in elastic modulus and ultimate tensile strength caused by the additions. Results are presented for three related epoxy resin systems and three hardeners while holding rubber additions at 0 or 10 pph resin. Several resins used in filament winding or casting of composites show beneficial increases in toughness. (Author-PL)

Descriptors :   *Epoxy resins, *Composite materials, Tensile properties, Toughness, Formulations, Curing agents, Fibers, Reinforcing materials

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE