66.57.4.17 (talk) That was a copy paste of an article abstract with only passing mention of the subject. I summarized the pertinent points. |
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http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920019432_1992019432.pdf </ref> It was developed by [[UBE Industries]]. |
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920019432_1992019432.pdf </ref> It was developed by [[UBE Industries]]. |
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==NASA== |
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Upilex-S, along with other polyimides [[Kapton]] HN and Kapton E, have been investigated by [[NASA]] with respect to their radiation durability for possible use in the [[Next Generation Space Telescope]], where polymer film layer sunshields must operate at low temperatures and in the presence of [[cosmic ray]]s.<ref>Next Generation Space Telescope Sunshield Materials Titles http://www.grc.nasa.gov/WWW/epbranch/TEMP/epbranch/other/nexttitles.htm</ref> |
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The Next Generation Space Telescope (NGST), anticipated to be launched in 2009 for a 10-year mission, will make observations in the infrared portion of the spectrum to examine the origins and evolution of our universe. Because it must operate at cold temperatures in order to make these sensitive measurements, it will use a large, lightweight, deployable sunshield, comprised of several polymer film layers, to block heat and stray light. This paper describes laboratory radiation durability testing of candidate NGST sunshield polymer film materials. Samples of fluorinated polyimides CP1 and CP2; and a polyarylene ether benzimidazole, TOR-LM™, were exposed to 40 keV electron and 40 keV proton radiation followed by exposure to vacuum ultraviolet (VUV) radiation in the 115-200 nm wavelength range. Samples of these materials were also exposed to VUV without prior electron and proton exposure. Samples of polyimides of Upilex-S were exposed to electrons and protons, only, due to limited available exposure area in the VUV facility. Exposed samples were evaluated for changes in solar absorptance and thermal emittance and mechanical properties of ultimate tensile strength and elongation at failure. Data obtained are compared with previously published data for radiation durability testing of these polymer film materials<ref>Next Generation Space Telescope Sunshield Materials Titles http://www.grc.nasa.gov/WWW/epbranch/TEMP/epbranch/other/nexttitles.htm - </ref> |
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==References== |
==References== |
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{{Reflist}} |
{{Reflist}} |
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==See also== |
==See also== |
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==External links== |
==External links== |
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* [http:// |
* [http://www.ube.com/ UBE ] |
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* [http://www.upilex.jp/e_index.html Upilex Aerospace ] |
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[[Category:Dielectrics]] |
[[Category:Dielectrics]] |
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[[Category:Flexible electronics]] |
[[Category:Flexible electronics]] |
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{{polymer-stub}} |
Revision as of 21:03, 13 May 2009
Upilex is a heat resistant polyimide film formed from biphenyl tetracarboxylic dianhydride (BPDA) monomers. Its properties include dimensional stability, low water absorption and high chemical resistance.[1] It was developed by UBE Industries.
NASA
The Next Generation Space Telescope (NGST), anticipated to be launched in 2009 for a 10-year mission, will make observations in the infrared portion of the spectrum to examine the origins and evolution of our universe. Because it must operate at cold temperatures in order to make these sensitive measurements, it will use a large, lightweight, deployable sunshield, comprised of several polymer film layers, to block heat and stray light. This paper describes laboratory radiation durability testing of candidate NGST sunshield polymer film materials. Samples of fluorinated polyimides CP1 and CP2; and a polyarylene ether benzimidazole, TOR-LM™, were exposed to 40 keV electron and 40 keV proton radiation followed by exposure to vacuum ultraviolet (VUV) radiation in the 115-200 nm wavelength range. Samples of these materials were also exposed to VUV without prior electron and proton exposure. Samples of polyimides of Upilex-S were exposed to electrons and protons, only, due to limited available exposure area in the VUV facility. Exposed samples were evaluated for changes in solar absorptance and thermal emittance and mechanical properties of ultimate tensile strength and elongation at failure. Data obtained are compared with previously published data for radiation durability testing of these polymer film materials[2]
References
- ^ High Temperature Dielectric Properties of Apical, Kapton, Peek Upilex http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920019432_1992019432.pdf
- ^ Next Generation Space Telescope Sunshield Materials Titles http://www.grc.nasa.gov/WWW/epbranch/TEMP/epbranch/other/nexttitles.htm -