The thermal conductivity of two thermal insulating materials Final report
Test methods and procedures to determine thermal conductivity of polyurethane foam and aluminized Mylar
Tye, R. P.↗
SEARCH · Search NASA
Results for “polyurethanes”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
An Upper Bound of Failure in Viscoelastic Materials Subjected to Multiaxial Stress States
Polyurethane rubber failure behavior under uniaxial, equilibiaxial and equitriaxial tensile stress
Knauss, W. G.↗
An analytical model for determining the thermal conductivity of closed-cell foam insulation.
Thermal conductivity of closed cell polyurethane foam insulation, analyzing steady state heat flow, gas diffusion, condensing, mole fraction and temperature
Hammond, M. B., Jr.↗
A new method for fabrication of flexible vacuum purge jackets
Polyurethane-coated synthetic fabric is fitted with a filament-glass mat exterior which gives it a high degree of springback ability. Material is capable of maintaining its springback capability in a temperature range from ambient to cryogenic.
Shriver, C. B.↗
Thermal conductivity probe
Low-mass probe accurately measures the thermal conductivity of polyurethane foam /and other thermal insulating materials/ while exposed to either hydrogen of helium permeation in temperature ranges from ambient to cryogenic. The thermal conductivity of a specimen is determined from an experimentally determined increase in temperature.
Navickas, J.↗
The development of a lightweight coated life raft fabric with improved abrasion resistance Final report
Development of polypropylene fabric coated with polyurethane for life rafts
Source record↗
Low-density foam for insulating liquid- hydrogen tanks
Lightweight polyurethane insulation for liquid hydrogen tanks of space vehicles
Summer, I. E.↗
Stable crack propagation in a viscoelastic strip
Stable crack propagation in viscoelastic strip of polyurethane rubber
Mueller, H.-K.↗
The development of structural adhesive systems suitable for use with liquid oxygen Summary report, 1 Mar. - 30 Nov. 1967
Structural adhesives prepared from fluorinated polyurethanes for use with liquid oxygen
Hollander, J.↗
Frictional losses in foam-damped flexible tubes.
Frictional losses in straight tubing and effect of system on ball type valve, using polyurethane foam damped flexible silastic tube
Klinzing, G. E.↗
Behavior of nonlinear viscoelastic material under simultaneous stress relaxation in tension and creep in torsion.
Tension stress and shearing strain vs time for simultaneous stress relaxation and creep in polyurethane
Findley, W. N.↗
Behavior of nonlinear viscoelastic material under simultaneous stress relaxation in tension and creep in torsion.
Tension stress and shearing strain vs time for simultaneous stress relaxation and creep in polyurethane
Findley, W. N.↗
Ablative thermal protection at low heating rates.
Ablative materials thermal protection characteristics at low heating rates evaluated by convective heating tests, stressing polyurethane foam composite
Goldstein, H. E.↗
Phenolic cutter for machining foam insulation
Pre-pregged fiber glass is an efficient abrasive for machining polystyrene and polyurethane foams. It bonds easily to any cutter base made of aluminum, steel, or phenolic, is inexpensive, and is readily available.
Blair, T. A.↗
Preparation of highly fluorinated diols containing ether linkages.
Hydroxy-terminated perfluoroethers and polyurethane resins derived from ethers have outstanding chemical resistance and good thermal properties. They can be used as potting compounds, coatings, and seals. The hydroxy-terminated ethers serve as intermediates in the synthesis of highly fluorinated elastomers and adhesives.
Rochow, S. E.↗
Strain compatibility tests for sprayed foam cryogenic insulation
Mechanical stress applied to foam-coated aluminum alloy specimens maintained at cryogenic temperature simulates actual use conditions of the foam insulation. The testing reveals defects in the polyurethane foam or in the foam to metal bond.
Hill, W. L.↗
The low-cost cryostat
Inexpensive method of fabricating cryostats uses polyurethane, super insulation, fiber glass, and cardboard/plywood. Cryostat weighs 1/10 of Dewar, occupies about same volume, is easy to handle, requires no metal parts, and can be formed into virtually any configuration.
Bronson, J. C.↗
Lightweight, self-evacuated insulation panels
Multilayer insulation of prefabricated panels is developed for cryogenic storage tanks. System utilizes panels of aluminized Mylar separated by sheets of low conductivity polyurethane foam. Panels are self-evacuated by cryopumping of gaseous carbon dioxide at time of use.
Dengler, R. P.↗