Accession Number : ADA310402

Title :   An Investigation of the Mechanisms of Heat Transfer in Low-Density Phenolic-Nylon Chars.

Descriptive Note : Contract rept.,

Corporate Author : SOUTHERN RESEARCH INST BIRMINGHAM AL

Personal Author(s) : Smyly, E. D. ; Pyron, C. M., Jr. ; Pears, C. D.

PDF Url : ADA310402

Report Date : DEC 1967

Pagination or Media Count : 102

Abstract : The heat transfer mechanisms in phenolic-nylon chars were investigated. In order to separate the effects of solid and gas conduction and radiation, the thermal conductivities of three phenolic-nylon chars having porosities of 0.79, 0.82, and 0.88 were measured in vacuum, nitrogen, and helium environments. The temperature range covered was from 400 deg F (477 deg K) to 1000 deg F (811 deg K). The pressure range was from 0.002 to 760 torr. The thermal conductivity increased on changing the environment from vacuum to either nitrogen or helium.

Descriptors :   *HEAT TRANSFER, *NYLON, *LOW DENSITY, *PHENOLIC PLASTICS, *CHARRING, RADIATION, TEMPERATURE, ENVIRONMENTS, VACUUM, SOLIDS, NITROGEN, GASES, THERMAL CONDUCTIVITY, PRESSURE, HELIUM, POROUS MATERIALS.

Subject Categories : Plastics
      Inorganic Chemistry
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE