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Engineering topics

Curry, J. E.

Publications and source records attributed to Curry, J. E..

12 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1982

Binders for Thermal-Control Coatings

Methyl trialkoxysilane hydrolysates have been found to be superior binders for radiative thermal-control coatings. Using sprayed test panels, candidate coating formulations were optimized with respect to binder/ pigment radio, ethanol content, pigment particle size, coating thickness, and curing conditions. Binders are made from monomers of trialkoxy-silanes or chain-extended alkoxysilanes. Monomers are believed to polymerize to ladder-type structures like methyl silicone.

Patterson, W. J.↗
NASA NTRS1973

Transient permeation of organic vapors through elastomeric membranes

The permeation of benzene and acetone vapors through sulfur-cured natural rubber was studied by the time-lag method. The zero concentration diffusion coefficient, was obtained by the early-time method. The Frisch time lag equation was utilized to estimate both the solubility coefficient and the additional parameter required to define the concentration-dependence of the diffusion coefficient. This form of concentration dependence was manifested by the corresponding permeability coefficient values. At low entering penetrant pressure where the transport coefficients are constant, indirect evidence was obtained that zero diffusion coefficient is the mechanically correct diffusion coefficient. The solubility coefficient values calculated for benzene vapor in natural rubber are in reasonable agreement with published equilibrium sorption data for a similar rubber compound. At higher entering penetrant pressures, average diffusion coefficients obtained at steady state tended to be larger than the corresponding average diffusion coefficients derived from the time-lags.

Curry, J. E.↗
NASA NTRS1966

Substituted silane-diol polymers have improved thermal stability

Organosilicon polymers were synthesized to produce improved physical and chemical properties, including high thermal stability. Of the polymers produced, poly/4, 4 prime-bisoxybi- phenylene/diphenylsilane, formed from bis/anilino/diphenylsilane and p, p prime-biphenol, was found to have the most desirable properties.

Byrd, J. D.↗
NASA NTRS1966

Non-metallic materials

Nonmetallic materials development - cryogenic insulation, adhesives research, and membrane diffusion theory

NONMETAL↗
NASA NTRS1965

Studies in silazane chemistry

Chemistry of silazane compounds and application of data to synthesis of silicon-nitrogen linkage polymer compounds

ORGANIC SILICON COMPOUND↗