Electrical Conductivity of a Space-Used Silicone Elastomer: Evolution Under Electron Irradiation
| Autor: | Sabine Dagras, A. Roggero, Eric Dantras, Claire Tonon, B. Dirassen, S. Lewandowski, Denis Payan, Thierry Paulmier |
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| Přispěvatelé: | ONERA - The French Aerospace Lab [Toulouse], ONERA, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Airbus Defence and Space [Toulouse], Centre National d'Études Spatiales [Toulouse] (CNES) |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Arrhenius equation Materials science Aerospace Engineering SPACE-USED SILICONE ELASTOMER 02 engineering and technology Activation energy 021001 nanoscience & nanotechnology Thermal conduction Elastomer 01 natural sciences [PHYS.PHYS.PHYS-SPACE-PH]Physics [physics]/Physics [physics]/Space Physics [physics.space-ph] chemistry.chemical_compound symbols.namesake Silicone chemistry ELECTRON IRRADIATION Space and Planetary Science Electrical resistivity and conductivity 0103 physical sciences Electron beam processing symbols Composite material 0210 nano-technology Corona discharge |
| Zdroj: | Journal of Spacecraft and Rockets Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics, 2016, 53 (6), p. 1114-1118. ⟨10.2514/1.A33452⟩ |
| ISSN: | 1533-6794 0022-4650 |
| DOI: | 10.2514/1.a33452 |
| Popis: | International audience; The electrical conductivity of a space-used commercial silicone adhesive has been measured and its temperature dependence evidenced. It was shown to obey an Arrhenius law with an activation energy of 0.4 eV, associated with an electron-hopping transport. In parallel, this material was deprived from its fillers in the laboratory, and the dc conductivity of the resulting polysiloxane matrix was shown to obey the same Arrhenius law as the filled material. When exposed to high-energy electrons, the dc conductivity of both materials decreases, probably due to a predominant chain cross-linking process. For the highest experimental ionizing dose, the dc conductivity of this commercial silicone elastomer fell from 6×10^−13 down to 2×10^−16 S.m^−1.Consequently, the associated electrostatic discharge triggering risk in space applications moved from safe to critical. |
| Databáze: | OpenAIRE |
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