THERMAL RESPONSE OF HEAT-RESISTANT LAYER WITH PYROLYSIS

Abstract

A model is developed for analyzing the thermal response of the heat-resistant layer composed of high silica fiber reinforced phenolic matrix composites(SiO2/P) and aluminum, in which pyrolysis and phase transitions are exsited, such as melt, vaporization and sublimation. Based on this model, the thermal response of the heat-resistant layer with different SiO2/P thickness is calculated under a heat flux by using FORTRAN codes. As indicated in the results, the slope of temperature gets a sudden decline at the pyrolysis interface, which is due to the latent heat of pyrolysis; the thickness of heat-resistant layer has little influence on the heating-surface temperature, however, the back temperature may increase with the decreasing thickness; and the thermal conductivity of carbonized layer is very important to thermal response.

Keywords

Dates

  • Submission Date2011-01-28
  • Revision Date2011-04-18
  • Acceptance Date2011-05-07

DOI Reference

10.2298/TSCI110128035H

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Volume 16, Issue 1, Pages69 -78