Accession Number:

AD0257747

Title:

CARBONIZATION OF PLASTICS AND REFRACTORY MATERIALS RESEARCH. PART I

Descriptive Note:

Corporate Author:

GENERAL ELECTRIC CO CINCINNATI OHIO

Personal Author(s):

Report Date:

1961-02-01

Pagination or Media Count:

1.0

Abstract:

Details are presented of experimental investigations concerned with 1 the rate and mechanism of the carbonization of plastics 2 the measurement of the vapor pressure of refractory materials and 3 the determinatio of the spectral emissivities of refractory materials. Three complementary experimental techniques were used to study the carbonization of plastics 1 thermogravimetric analysis, which given an over-all picture of reaction rates under slow heating 2 fluid-bed carbonization of powdered resin, which provides insight into the mechanism and 3 arc image furnace experiments in which the plastics are exposed to temperatures approaching those of actual ablation applications. Vapor pressure studies were conducted using the Langmuir evaporation technique. In addition matrix-isolation techniques and resonance-line absorption spectroscopy were applied to the study of vapor species. Materials studied were TaC, ZrC and ThO2. Normal spectral emissivities of W, TaC and ZrC have been measured between 1800 and 3000 K using an emissometer. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE