Accession Number : ADA302016

Title :   Evaluation of a Low-Density Polyimide Foam in a Dynamic, High-Temperature Environment.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Pittman, Claud M. ; Brown, Ronald D.

PDF Url : ADA302016

Report Date : DEC 1977

Pagination or Media Count : 25

Abstract : A low-density (64 kg/cu m), polyimide foam material was tested in an arc tunnel to determine its potential for heat-shield application on aerospace vehicles. The results show that the material has some reuse potential at surface temperatures as high as 750 K (0.43 cm recession in 12 000 sec). When a black refractory paint was applied to the surface of the material, the surface recession was negligible at 750 K. An analytical thermal conductivity was derived for this material which, combined with measured thermal property values, can be used to make preliminary-design thickness calculations for heat-shield applications. jg p3

Descriptors :   *ENVIRONMENTS, *HIGH TEMPERATURE, *LOW DENSITY, *FOAM, *POLYIMIDE RESINS, TEST AND EVALUATION, THERMAL PROPERTIES, MATERIALS, THERMAL CONDUCTIVITY, AEROSPACE CRAFT, HEAT SHIELDS, SURFACE TEMPERATURE, BLACK(COLOR), REFRACTORY COATINGS.

Subject Categories : Polymer Chemistry
      Plastics
      Electricity and Magnetism
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE