Temperature effects on the fracture behavior and tensile properties of silane-treated clay/epoxy nanocomposites |
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| Authors: | Sung-Rok Ha Kyong-Yop Rhee Soo-Jin Park Joong Hee Lee |
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| Affiliation: | 1. Mechanical Engineering R&D Lab., LIGNex1 Co., Ltd., Yongin, Republic of Korea;2. School of Mechanical and Industrial System Engineering, Industrial Liaison Research Institute, KyungHee University, Yongin 446-701, Republic of Korea;3. Department of Chemistry, Inha University, 253, Nam-gu, Incheon 402-751, Republic of Korea;4. WCU Program, Bin Fusion Technology,Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea;1. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 31, Kashirskoe shosse, 115409 Moscow, Russia;2. Karpov Institute of Physical Chemistry, Vorontsovo Pole, 10, 105064 Moscow, Russia;3. School of Engineering, Griffith University, Brisbane, 4111 QLD, Australia;1. Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;2. Thermodynamics Laboratory, UGC-DAE Consortium for Scientific Research, Indore 452001, India;1. Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia;2. Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia;3. Faculty of Agriculture, University of Belgrade, Belgrade-Zemun, Serbia;1. Research Center of Solar Photo-Electricity Applications, National Pingtung University of Science and Technology, Pingtung 912, Taiwan;2. Powder Technology R&D Laboratory, Department of Mechanical Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan;3. Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 20 Dover Drive, Singapore 138682, Singapore |
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| Abstract: | We investigated the effects of clay silane treatment on the fracture behaviors of clay/epoxy nanocomposites by comparing the compliance, critical fracture load, and fracture toughness of silane-treated samples with those of untreated samples. The fracture toughnesses of untreated and silane-treated clay/epoxy nanocomposites were 8.52 J/m2 and 15.55 J/m2, respectively, corresponding to an 82% increase in fracture toughness after clay silane treatment. Tensile tests were performed at ?30 °C, 25 °C, 40 °C, and 70 °C. Tensile strength and elastic modulus were higher at ?30 °C than at 25 °C for both samples. However, the tensile properties decreased as temperature increased for both samples. In particular, at 70 °C, the tensile properties were less than 10% of the original value at room temperature, independent of surface treatment. The fracture and tensile properties of silane-treated clay/epoxy nanocomposites increased due to good dispersion of the clay in epoxy and improvement in interfacial adhesive strength between epoxy and clay layers. |
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