Synthesis and mechanical properties of lightweight hybrid geopolymer foams reinforced with carbon nanotubes |
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| Authors: | Shu Yan Fanyong Zhang Haochen Li Bo Gao Pengfei Xing Peigang He Dechang Jia |
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| Affiliation: | 1. School of Metallurgy, Northeastern University, Shenyang, China;2. Research Institute for Energy Equipment Materials, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China;3. Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China |
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| Abstract: | A lightweight hybrid geopolymer foams reinforced with carbon nanotubes (CNTs) was exploited by adding the CNTs into geopolymeric matrix through hydrogen peroxide method. The synergistic effects of nanotubes and foaming agent on the phase evolution, microstructure, and mechanical properties were investigated. After introduction of nanotubes, the geopolymer foams reinforced with CNTs (CNTs/KGP) still showed amorphous structure. Porosity of the foams increased with the H2O2 content and decreased with the increase in CNTs content. The addition of CNTs (1-9 wt%) in foams refined the distribution of pore size from 523 to 352 μm. Compression strength of the CNTs/KGP samples elevated with the increasing content of CNTs, which was contributed to the crack propagation and bridging of CNTs in foams. The CNTs/KGP foams with considerable porosity show potential applications in adsorption, filtration, membrane supports, other industries, etc |
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| Keywords: | carbon nanotube cellular geopolymer foam mechanical properties |
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