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  • 1
    facet.materialart.
    Unknown
    Ultraviolet-Induced Mirror Degradation (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Recent tests of second-surface mirrors show that ultraviolet radiation penetrates glass and metalized zone and impinges upon backing paint. According to report, many backing materials are degraded by ultraviolet radiation. Mirror corrosion is a serious problem in solar-energy collection systems. Effects of UV on polymeric materials have been studied, and in general, all are degraded by UV. Polymers most resistant to UV radiation are polyimides.
    Keywords: MATERIALS
    Type: NPO-15520 , NASA Tech Briefs (ISSN 0145-319X); 6; 2; P. 169
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Freeze/Thaw Properties of Cellular Glass (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Without moisture, temperature cycles do no harm. Experiments described in new report indicate inherent material variability greater deterrent to application of material than freeze/thaw effects.
    Keywords: MATERIALS
    Type: NPO-15854 , NASA Tech Briefs (ISSN 0145-319X); 7; 4; P. 409
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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