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  • 1
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    Elastomeric Cathode Binder (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Soluble copolymer binder mixed with cathode material and solvent forms flexible porous cathode used in lithium and Ni/Cd batteries. Cathodes prepared by this process have lower density due to expanding rubbery binder and greater flexibility than conventional cathodes. Fabrication procedure readily adaptable to scaled-up processes.
    Keywords: MATERIALS
    Type: NPO-15424 , NASA Tech Briefs (ISSN 0145-319X); 8; 4; P. 499
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Porous poly-HEMA bead synthesis (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Low-cost reagent is useful in labeling cells for research and diagnostic purposes.
    Keywords: MATERIALS
    Type: NPO-13383 , NASA Tech Briefs (ISSN 0145-319X); 2; 1; P. 3
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    NASA TECHNICAL REPORTS
  • 3
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    Low-resistivity homogeneous elastomers (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Mixture of polyurethane polyelectrolyte and soluble, conducting organic compound produces homogeneous elastomer which has resistivity several orders of magnitude less than polyelectrolyte alone. Elastomeric material has novel resistivity dependence on temperature, that is, resistivity changes dramatically over narrow temperature range in vicinity of glass transition temperature.
    Keywords: MATERIALS
    Type: NPO-11881
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Improved Electrodes for Lithium Cells (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Chlorinated elastomeric binder improves cell mechanical and electrical characteristics. Substituted for PTFE binder, chlorinated polyethylene rubber allows high cell-discharge rates and higher stored energy per unit volume. In addition, it costs about one-eighth as much as PTFE.
    Keywords: MATERIALS
    Type: NPO-16397 , NASA Tech Briefs (ISSN 0145-319X); 9; 2; P. 98
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Improved ion exchange membrane (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Membrane, made from commercially-available hollow fibers, is used in reverse osmosis, or dialysis. Fiber has skin layers which pass only small molecules. Macromolecules cannot penetrate skin. Fibers can also be used to remove other undesirable anions, such as phosphate, sulfate, carbonate, and uranium in form of uranium-sulfate complex.
    Keywords: MATERIALS
    Type: NPO-13309
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Polyelectrolytes with high charge density (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Polymers can be used as flocculants to clarify residential and industrial water supplies and as bactericidal and fungicidal agents. They can be used in preparation of electroconductive photocopy papers, to improve living cell adhesion to glass or plastic, and as anticancer agents.
    Keywords: MATERIALS
    Type: NPO-11918
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Binder for Carbon-Fiber Coating (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Insoluble, even coating formed by soaking in polyacrylic acid. Carbon fiber material prepared by soaking in solution of 20 percent polyacrylic acid in water. Material blotted and dried at 120 degrees C for at least 2 hours. Dried material reacted with boiling aqueous solution of calcium acetate. Treated material removed from boiling solution, blotted, dried at 120 degrees C, washed with distilled water, and dried again.
    Keywords: MATERIALS
    Type: NPO-14988 , NASA Tech Briefs (ISSN 0145-319X); 8; 2; P. 214
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Acrolein Microspheres Are Bonded To Large-Area Substrates (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Reactive cross-linked microspheres produced under influence of ionizing radiation in aqueous solutions of unsaturated aldehydes, such as acrolein, with sodium dodecyl sulfate. Diameters of spheres depend on concentrations of ingredients. If polystyrene, polymethylmethacrylate, or polypropylene object immersed in solution during irradiation, microspheres become attached to surface. Resulting modified surface has grainy coating with reactivity similar to free microspheres. Aldehyde-substituted-functional microspheres react under mild conditions with number of organic reagents and with most proteins. Microsphere-coated macrospheres or films used to immobilize high concentrations of proteins, enzymes, hormones, viruses, cells, and large number of organic compounds. Applications include separation techniques, clinical diagnostic tests, catalytic processes, and battery separators.
    Keywords: MATERIALS
    Type: NPO-15635 , NASA Tech Briefs (ISSN 0145-319X); 12; 9; P. 68
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Thermosetting Fluoropolymer Foams (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: New process makes fluoropolymer foams with controllable amounts of inert-gas fillings in foam cells. Thermosetting fluoropolymers do not require foaming additives leaving undesirable residues and do not have to be molded and sintered at temperatures of about 240 to 400 degree C. Consequently, better for use with electronic or other parts sensitive to high temperatures or residues. Uses include coatings, electrical insulation, and structural parts.
    Keywords: MATERIALS
    Type: GSC-13008 , NASA Tech Briefs (ISSN 0145-319X); 11; 10; P. 54
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Fluoroepoxy Adhesives Bond Fluoroplastics (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Etching or other special preparation unnecessary. Experiments show fluoroepoxy compounds of high fluorine content adhere to fluoroplastics, without prior etching or other treatment of fluoroplastic surfaces. Compounds mixed with each other in approximately stoichiometric amounts and react to produce fluoroepoxy compounds adhering to fluoroplastics. Advantageous in bonding polymers having fluorine contents of 55 percent or more.
    Keywords: MATERIALS
    Type: GSC-13072 , NASA Tech Briefs (ISSN 0145-319X); 13; 2; P. 56
    Format: text
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