Polymer structure and mechanical properties
Mechanical properties, morphology, and relaxation processes in elastomers and crystalline polymers
Source record↗
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Results for “elastomers”
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.
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In situ vacuum testing - A must for certain elastomeric materials.
In situ vacuum testing requirement for valid measurement of vacuum induced changes in mechanical and thermal properties of various filled elastomers
Comparin, R. A.↗
Effects of decontamination, sterilization, and thermal vacuum on polymeric products
Adhesives, coatings, coated fabrics, elastomers, encapsulants, films, hardware and structural materials, and tapes are tested in a series of physical, mechanical, and electrical tests. Material properties are measured before and after exposure to the three environments.
Roper, W. D.↗
Film breakers prevent migration of aqueous potassium hydroxide in fuel cells
Electrolyte film breakers made from polytetrafluoroethylene are installed in the reactant and water vapor removal outlets of each cell and sealed by elastomers. Use of these devices in the water vapor removal cavity outlets prevents loss of KOH solution through film migration during water removal.
Hess, P. D.↗
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.↗
Ultra-flexible biomedical electrodes and wires
Soft, flexible electrode conforms to body contour during body motion. It is fabricated from an elastomer impregnated with a conductive powder which can be configured into any required shape, including a wire shape to connect the electrode directly to an electrical instrument or to a conventional metallic wire.
Rositano, S. A.↗
Nonflammable Fluorel compounds
Elastomer research for developing nonflammable spacecraft materials of Fluorel compounds
Supkis, D. E.↗
Materials for sealing applications
Elastomers and plastics for sealing applications in aerospace environments
R F Betts↗
Polymer research
Aging, viscoelastic, and electrical conductivity of elastomers, molecular weight determination, and battery separators
Source record↗
Improved thermal paint formulation
Potassium silicate-treated zinc oxide paint stabilizes pigment against ultraviolet-induced, bleachable degradation in infrared region, and permits use of ZnO as pigment in ultraviolet-stable coatings based upon polymethyl siloxane elastomers and resins. Material has low absorptance/emittance ratio.
Gates, D. W.↗
Cumulative damage effects of viscoelastic fracture Semiannual progress report
Investigating energy concept of adhesive failure and pressurized disk test for measuring adhesive value of bonded elastomers
Williams, M. L.↗
Extensometer Patent
Development of apparatus for measuring successive increments of strain on elastomers
Hooper, C. D.↗
Oxygen Difluoride Research Study Final Report, Jun. 1963 - Sep. 1965
Ammonia decontaminant control of oxygen difluoride and static and dynamic compatibility tests with plastic and elastomer materials
Jackson, R. B.↗
Properties of ablation and insulation materials. Volume 1 - Thermal properties of some filled and foamed low density ablators
Thermal conductivity, thermal expansion, and heat capacity of low density silicone elastomer and filled cork from 150 K to 500 K
Pears, C. D.↗
On the presence of crystallinity in hydrogenated polybutadienes
Crystallites in hydrogenated hydroxy terminated polybutadiene from polarized light examination, viscosity-temperature curve discontinuity and elastomer modulus-temperature curve
Cuddihy, E. F.↗
Positive holding of Schumann-type film for precise microdensitometry
Elastomer O ring vacuum device for positive holding of Schumann film for precise microdensitometry during rocket flight in 7 March 1970 solar eclipse
Hazen, N. L.↗
Leaching of nitroso rubber material removes uncured polymer
New leaching process removes uncured polymer from nitroso rubber, elastomer used in presence of nitrogen tetroxide. Uncured portion is removed by controlled soaking of polymer slab in Freon TF. Leaching with Freon TF prevents nitroso rubber from adhering to adjoining surfaces and limiting its usefulness in either static or dynamic applications.
Bratfisch, W. A.↗
Other NASA-developed materials and some industrial applications
The characteristics and applications of various materials for fireproofing aerospace vehicles are discussed. Materials described are: (1) fibrous materials, (2) nonflammable paper and paperboard, (3) elastomers, (4) foams, and (5) plastics. The suitability of the various materials for specific applications are investigated.
Radnofsky, M. I.↗