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  • 1
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    Unknown
    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
  • 2
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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
  • 3
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    Biaxially Stretched Polycarbonate Film For Capacitors (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Report describes experiments on effects of biaxial stretching on crystal structures, dielectric properties, and sellected thermal and mechanical properties of biaxially stretched polycarbonate films. Highest stretch ratios produce highest degree of crystallinity, with single crystalline phase and distribution of crystallites more nearly isotropic than uniaxially oriented film. Electrical properties at high temperatures improved.
    Keywords: MATERIALS
    Type: NPO-18090 , NASA Tech Briefs (ISSN 0145-319X); 16; 9; P. 78
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Improved Dielectric Films For Capacitors (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Dielectric films made from blends of some commercially available high-dielectric-constant cyanoresins with each other and with cellulose triacetate (CTA) have both high dielectric constants and high breakdown strengths. Dielectric constants as high as 16.2. Films used to produce high-energy-density capacitors.
    Keywords: MATERIALS
    Type: NPO-18913 , NASA Tech Briefs (ISSN 0145-319X); 18; 7; P. 54
    Format: text
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    NASA TECHNICAL REPORTS
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