Space environmental effects on several polymeric and metallic materials
Space environmental effects on elastomers and metallic materials
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Space environmental effects on elastomers and metallic materials
In situ vacuum testing requirement for valid measurement of vacuum induced changes in mechanical and thermal properties of various filled elastomers
Two new polyethers, poly /hexafluoropentamethylene tetrafluoro-p-phenylene ether/ and a completely hydroxyl-terminated polyether, is prepared by reactions of hexafluorobenzene with hexafluoropentanediol. The polyethers can be prepared as low molecular weight oils, as intermediate molecular weight waxes, or as high molecular weight elastomers.
Mechanical properties, morphology, and relaxation processes in elastomers and crystalline polymers
In situ vacuum testing requirement for valid measurement of vacuum induced changes in mechanical and thermal properties of various filled elastomers
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.
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.
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.
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.
Elastomer research for developing nonflammable spacecraft materials of Fluorel compounds
Elastomers and plastics for sealing applications in aerospace environments
Aging, viscoelastic, and electrical conductivity of elastomers, molecular weight determination, and battery separators
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.
Investigating energy concept of adhesive failure and pressurized disk test for measuring adhesive value of bonded elastomers
Development of apparatus for measuring successive increments of strain on elastomers
Ammonia decontaminant control of oxygen difluoride and static and dynamic compatibility tests with plastic and elastomer materials
Thermal conductivity, thermal expansion, and heat capacity of low density silicone elastomer and filled cork from 150 K to 500 K
Crystallites in hydrogenated hydroxy terminated polybutadiene from polarized light examination, viscosity-temperature curve discontinuity and elastomer modulus-temperature curve