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Cryogenic properties of SiO2/epoxy nanocomposites |
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| Authors: | C.J. Huang Y.H. Zhang L.F. Li |
| Affiliation: | a Cryogenic Materials Division, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China b Institute of Polymer Research, Hohe Str. 6, 01069, Dresden, Germany c School of Aerospace, Mechanical and Mechatronic Engineering, Centre for Advanced Materials Technology (CAMT), The University of Sydney, Sydney, NSW 2006, Australia |
| Abstract: | SiO2/epoxy nanocomposites were prepared using diglycidyl ether of bisphenol-F (DGEBF) type epoxy and tetraethylorthosilicate (TEOS) via the sol-gel process. Silica nanoparticles were collected after burning off the matrix resin and the silica nanoparticles were observed using TEM. The cryogenic tensile properties at 77 K and thermal expansion coefficient of the nanocomposites were studied. The tensile properties at room temperature were also given to compare with the cryogenic tensile properties. The fracture surfaces were examined with scanning electron microscopy (SEM). The effects of silica nanoparticle content have been studied on the cryogenic tensile and thermal properties of the nanocomposites. In addition, the dependence of the glass transition temperature on the silica nanoparticle content has also been examined. |
| Keywords: | Epoxy resin Tensile properties Thermal expansion Low temperature |
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