CARBONIZATION OF PLASTICS AND REFRACTORY MATERIALS RESEARCH

Technical Report · Tue Aug 01 04:00:00 EDT 1961

OSTI ID:4699795

Coffman, J A; Kibler, G M; Lyon, T F; Acchione, B D

Presented are the results of continuing investigations of the Carbonization of Plastics, Vapor Pressure of Refractory Materials, and Spectral Emmissivity of Refractories. Studies of thermal degradation of phenolic, epoxy, polyphemylene, and polymaphthalene resins were made with the arc-image furnace, the fluidized bed reactor, and the thermogravimetric analysis technique. The effect of semaicarbonized materials used as fillers has been studied and a Bendix time-of-flight mass spectrometer has been adapted to the study of transient and stable species resulting from the flash-photolysed degradation of plastics. Properties of carbom residue have been measured. Vapor pressure studies using the Langmuir evaporation technique, the matrix isolation method, and resonance line absorption spectroscopy have progressed. Rates of evaporation of tungsten carbides, hafnium carbide, amd titanium carbide have been measured; further conclusive measurements on zircomium carbide have been made. Preliminary application of the matrix isolatiom technique to thoria has been made. Resomance line absorption studies have been completed om zircomium carbide and titanium carbide and the accessible thermodynamic data have been deduced. Normal spectral emissivities of W-2 coated molybdemum, siliconized ATJ graphite, tantalum, molybdenum, tungsten carbide, and zirconium have been measured in the temperature range of 1400 to 3100 deg K. (auth)

• Research Organization: General Electric Co. Flight Propulsion Lab. Dept., Cincinnati
• NSA Number: NSA-17-041363
• OSTI ID: 4699795
• Report Number(s): WADD-TR-60-646(Pt.II); AD-2979
• Country of Publication: United States
• Language: English

Related Subjects

CARBIDES
CEMENTS
COATING
ELECTRIC ARCS
EMISSION
EVAPORATION
FLUIDIZATION
FURNACES
GRAPHITE
HAFNIUM CARBIDES
HIGH TEMPERATURE
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM
NAPHTHALENE
PHENOLS
POLYMERS
POLYPHENYLS
PRESSURE
REFRACTORIES
RESINS
RESONANCE
SILICIDES
SPECTRA
SPECTROMETERS
TANTALUM
THERMODYNAMICS
THORIUM OXIDES
TITANIUM CARBIDES
TRANSIENTS
TUNGSTEN CARBIDES
VAPORS
WEIGHT
ZIRCONIUM