Facile construction of the aerogel/geopolymer composite with ultra-low thermal conductivity and high mechanical performance |
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Authors: | Yajun Huang Lunlun Gong Yuelei Pan Congcong Li Ting Zhou Xudong Cheng |
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Affiliation: | State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei Anhui 230027 PR China, |
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Abstract: | In this work, we have successfully prepared a lightweight, highly hydrophobic and superb thermal insulating aerogel/geopolymer composite by a sol–gel immersion method. After silica aerogel was impregnated, the composite exhibited nano-porous structures. Moreover, scanning electron microscopy observations revealed that the aerogel particles were tightly anchored on the geopolymer surface. With several excellent properties (bulk density: 306.5 g cm−3, thermal conductivity: 0.0480 W m−1 K−1 and maximum compressive strength: 0.79 MPa) the as-prepared composite shows great potential to be applied in the thermal insulation field.In this work, we have successfully prepared a lightweight, highly hydrophobic and superb thermal insulating aerogel/geopolymer composite by a sol–gel immersion method. |
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