Atomic oxygen exposure effect on carbon nanotubes/epoxy composites for space systems

Авторы: Parkhomenko I.N., Vlasukova L.A., Parfimovich I.D., Komarov F.F., Novikov L.S., Chernik V.N., Zhigulin D.V.
Журнал: Acta Astronautica
Том: 204
Номер: 3
Год издания: 2023
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 124
Последняя страница: 131
DOI: 10.1016/j.actaastro.2022.12.046
Аннотация: Structural, optical and EMI shielding properties of epoxy resin reinforced with carbon nanotubes fillers "Taunit-M" and "Taunit-MD" have been studied. To estimate the resistance of nanocomposites operating in low-Earth orbits, the samples were exposed to atomic oxygen (AO) in the fluence range of (1.7-30) × 1020 cm-2. AO exposure results in mass loss of epoxy resin with carbon fillers: the erosion yields (Rm) are 1.07 × 10-23 g/atom and 1.21 × 10-23 g/atom for "Taunit-M″ and "Taunit-MD", respectively. Diffuse and specular reflectance noticeably decreases after AO exposure which in their turn leads to increase of solar absorptance from 0.940 to 0.996 for "Taunit-M″ and from 0.944 to 0.992 for "Taunit-MD". AO exposure also results in reduction of EMI shielding effectiveness from ∼5 dB to ∼4.2 dB and ∼4.96 dB for epoxy resin with "Taunit-M″ and "Taunit-MD", respectively, in the frequency range of 8.2-12.4 GHz (X-band) at room temperature.
Добавил в систему: Черник Владимир Николаевич

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