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Enhanced resistance to atomic oxygen of OG POSS/epoxy nanocomposites

Cited 19 time in Web of Science Cited 26 time in Scopus
Authors

Choi, Chunghyeon; Kim, YunHo; Kumar, Sarath Kumar Sathish; Kim, Chun-Gon

Issue Date
2018-10
Publisher
ELSEVIER SCI LTD
Citation
COMPOSITE STRUCTURES, Vol.202, pp.959-966
Abstract
Atomic oxygen (AO) in the low Earth orbit (LEO) space is critical to polymer matrix composites. AO strikes the surfaces of materials with sufficient energy to break chemical bonds. In this study, to solve the problem of undercutting of polymer matrix composite by AO, an octaglycidyldimethylsilyl (OG) polyhedral oligomeric silsesquioxane (POSS)/epoxy nanocomposite was proposed to improve the resistance of epoxy to AO. OG POSS/epoxy nanocomposites were fabricated and AO exposure test was carried out to confirm the improvement of resistance to AO. Consequently, it was observed that OG POSS increased the resistance of epoxy to AO. Compared with neat epoxy, OG POSS/epoxy nanocomposite containing 10 wt% OG POSS exhibited a reduction of 67% in mass loss by AO. OG POSS could be readily adapted to epoxy without a complex homogenization process. Therefore, this technology will be an effective way to help epoxy matrix composites survive in severe LEO space environments.
ISSN
0263-8223
URI
https://hdl.handle.net/10371/203254
DOI
https://doi.org/10.1016/j.compstruct.2018.05.011
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  • College of Engineering
  • Department of Aerospace Engineering
Research Area Smart composites, Space environments

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