Accession Number : AD0460379

Title :   INVESTIGATION OF ORGANIC COMPOUNDS FOR THERMAL PROTECTION. PART II.

Descriptive Note : Annual summary rept., 19 Apr 63-18 Jun 64,

Corporate Author : MONSANTO RESEARCH CORP DAYTON OH

Personal Author(s) : Butler, J. M. ; Ellard, J. A.

Report Date : 18 JUN 1964

Pagination or Media Count : 41

Abstract : A high-intensity light source for simulation of the thermal pulse from nuclear explosions was constructed, calibrated and used for testing of 12 polymer systems at 19.2 cal/sq cm/sec. The following polymers, filled with 5% Cr2O3, were tested: polyethylene, polystyrene, 6,6-nylon; polyvinyl fluoride, polyvinyl fluoride, polyacrylonitrile, polyvinyl chloride, polytetrafluoroethylene, chlorinated polyvinyl chloride, polymethyl methacrylate, polyvinylidene fluoride, and a polyurethane foam. In addition, two coded samples from U. S. Army Natick Laboratory (NLAB) were tested. Polystyrene, polyvinyl chloride, polyurethane foam, and the NLAB samples gave the most rapid production of smoke, light attenuation being detected in less than 0.2 sec. These materials also gave the greatest reduction (>60%) in transmission over a total four-second exposure. Consistent with these results with the hot filament pyrolysis technique, polymethyl methacrylate and polytetrafluoroethylene gave considerably less smoke on exposure to the high intensity light source. (Author)

Descriptors :   *THERMAL RADIATION, *THERMAL INSULATION, *POLYMERS, NUCLEAR EXPLOSIONS, POLYETHYLENE PLASTICS, STYRENE PLASTICS, NYLON, VINYL PLASTICS, FLUORINE COMPOUNDS, HALOCARBON PLASTICS, POLYVINYL CHLORIDE, ACRYLONITRILE POLYMERS, ACRYLIC RESINS, EXPANDED PLASTICS, ISOCYANATES, PLASTICS, PYROLYSIS, CHLORINE COMPOUNDS, SIMULATION, SMOKE, ATTENUATION, TEST EQUIPMENT, TEST FACILITIES, CHROMIUM COMPOUNDS, OXIDES, IMPREGNATION, TABLES(DATA), IODINE, PLASTIC COATINGS, FILMS, PROTECTIVE TREATMENTS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE