[article]
| Titre : |
Testing ultra-low outgassing silicone materials for space applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Summer L. Sivas, Auteur ; Bill Riegler, Auteur ; Brian Burkitt, Auteur ; Rob Thomaier, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 17-23 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Silicone adhesives and coatings have been used for over five decades in the Aerospace industry. Silicones ability to maintain its elasticity and low modulus over a broad temperature range, -130°C to 260°C, provides excellent utility in space, where spacecraft are often exposed to these extreme temperatures. A major drawback is silicone compounds with high vapor pressure can outgas from the polymer matrix and cause subsequent contamination of expensive equipment and devices. The National Aeronautics & Space Administration (NASA) and the European Space Agency (ESA) recommend testing low outgassing materials per ASTM E 595 prior to use in space which require a maximum Total Mass Loss (TML) of 1% and Collected Volatile Condensable Material (CVCM) of 0.1%. Although a standard for many years, many in the industry question whether these specifications are low enough. This paper characterizes Ultra Low Outgassing silicone materials with TML and CVCM one-tenth the standard ASTM E 595 specifications. ASTM E 1559 results are also examined to compare the outgassing behavior of different silicone materials. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23295 |
in SAMPE JOURNAL > Vol. 44, N° 2 (03-04/2008) . - p. 17-23
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