Accession Number : AD0745327

Title :   On the Thermal Diffusivity of Filled Elastomers.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION MECHANICS AND MATERIALS RESEARCH CENTER

Personal Author(s) : Schapery,R. A. ; Martin,R. E.

Report Date : JUN 1972

Pagination or Media Count : 60

Abstract : The influence of temperature and strain on the thermal diffusivity of particulate- filled elastomers is studied analytically and experimentally. Theoretical bases for the separate effects of temperature history on specific heat, especially in the neighborhood of the glass-transition temperature, and strain-induced vacuole dilatation on the conductivity, are first described; included is a comparison of the specific heat based on kinetic theory with new results from the theory of irreversible thermodynamics. An experimental investigation on the diffusivity of two different solid propellants is described. Finally, theoretical and experimental results are shown to be in reasonably good agreement over the entire experimental temperature range, -320 F to 140 F. (Author-PL)

Descriptors :   (*COMPOSITE MATERIALS, THERMAL DIFFUSION), (*ELASTOMERS, COMPOSITE MATERIALS), COMPOSITE PROPELLANTS, SPECIFIC HEAT, THERMAL CONDUCTIVITY, PARTIAL DIFFERENTIAL EQUATIONS, KINETIC THEORY

Subject Categories : Laminates and Composite Materials
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE