Silicone/graphene oxide co-cross-linked aerogels with wide-temperature mechanical flexibility, super-hydrophobicity and flame resistance for exceptional thermal insulation and oil/water separation
Article
Article Title | Silicone/graphene oxide co-cross-linked aerogels with wide-temperature mechanical flexibility, super-hydrophobicity and flame resistance for exceptional thermal insulation and oil/water separation |
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ERA Journal ID | 4724 |
Article Category | Article |
Authors | Zhang, Zhao-Hui (Author), Chen, Zuan-Yu (Author), Tang, Yi-Hao (Author), Li, Yu-Tong (Author), Ma, Dequan (Author), Zhang, Guo-Dong (Author), Boukherroub, Rabah (Author), Cao, Cheng-Fei (Author), Gong, Li-Xiu (Author), Song, Pingan (Author), Cao, Kun (Author) and Tang, Long-Cheng (Author) |
Journal Title | Journal of Materials Science and Technology |
Journal Citation | 114, pp. 131-142 |
Number of Pages | 12 |
Year | 2022 |
Publisher | Elsevier |
Place of Publication | China |
ISSN | 1005-0302 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jmst.2021.11.012 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1005030222000159 |
Abstract | Development of multifunctional and high-performance silicone aerogel is highly required for various promising applications. However, unstable cross-linking structure and poor thermal stability of silicone network as well as complicated processing restrict the practical use significantly. Herein, we report a facile and versatile ambient drying strategy to fabricate lightweight, wide-temperature flexible, super-hydrophobic and flame retardant silicone composite aerogels modified with low-content functionalized graphene oxide (FGO). After optimizing silane molecules, incorporation of γ-aminopropyltriethoxysilane functionalization is found to promote the dispersion stability of GO during the hydrolysis-polymerization process and thus produce the formation of unique strip-like co-cross-linked network. Consequently, the aerogels containing ∼2.0 wt% FGO not only possess good cyclic compressive stability under strain of 70% for 100 cycles and outstanding mechanical reliability in wide temperature range (from liquid nitrogen to 350 °C), but also display excellent flame resistance and super-hydrophobicity. Further, the optimized silicone/FGO aerogels display exceptional thermal insulating performance superior to pure aerogel and hydrocarbon polymer foams, and they also show efficient oil absorption and separation capacity for various solvents and oil from water. Clearly, this work provides a new route for the rational design and development of advanced silicone composite aerogels for multifunctional applications. |
Keywords | Flame resistance; Functionalized graphene oxide; Mechanical robustness; Silicone composite aerogel; Super-hydrophobicity |
ANZSRC Field of Research 2020 | 401605. Functional materials |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Hangzhou Normal University, China |
China Helicopter Research and Development Institute, China | |
Tianjin Helicopter Company, China | |
University of Lille, France | |
Centre for Future Materials | |
Zhejiang University, China | |
Institution of Origin | University of Southern Queensland |
Funding source | Australian Research Council (ARC) Grant ID FT190100188 |
Funding source | Australian Research Council (ARC) Grant ID DP190102992 |
https://research.usq.edu.au/item/q7223/silicone-graphene-oxide-co-cross-linked-aerogels-with-wide-temperature-mechanical-flexibility-super-hydrophobicity-and-flame-resistance-for-exceptional-thermal-insulation-and-oil-water-separation
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