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 y-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℃),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 var-ious 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.

Zhao-Hui Zhang;Zuan-Yu Chen;Yi-Hao Tang;Yu-Tong Li;Dequan Ma;Guo-Dong Zhang;Rabah Boukherroub;Cheng-Fei Cao;Li-Xiu Gong;Pingan Song;Kun Cao;Long-Cheng Tang

College of Material,Chemistry and Chemical Engineering,Key Laboratory of Organosilicon Chemistry and Material Technology of MoE,Hangzhou Normal University,Hangzhou,311121,China;Univ.Lille,CNRS,Centrale Lille,Univ.Polytechnique Hauts-de-France,UMR 8520-IEMN,F-59000 Lille,France;China Helicopter Research and Development Institute,Jingdezhen.333001,China;Tianjin Helicopter Co.,Ltd.,Tianjin,300308,China;Centre for Future Materials,University of Southern Queensland.Springfield Campus,QLD,4300,Australia;State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou,310027,China

材料科学技术（英文版）

[1]Zhao-Hui Zhang;Zuan-Yu Chen;Yi-Hao Tang;Yu-Tong Li;Dequan Ma;Guo-Dong Zhang;Rabah Boukherroub;Cheng-Fei Cao;Li-Xiu Gong;Pingan Song;Kun Cao;Long-Cheng Tang-.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)[J].材料科学技术（英文版）,2022(19):131-142

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