Nanoindentation Study on Mechanical Properties of Nano-SiO2/Dental Resin Composites
- 1 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 2 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 3 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 4 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 5 Research Center for Materials Genome Engineering, Wuhan University of Technology, Wuhan, China
- 6 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 7 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 8 Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, China
- 9 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 10 Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, China
- 11 Research Center for Materials Genome Engineering, Wuhan University of Technology, Wuhan, China
- 12 International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
- 13 Research Center for Materials Genome Engineering, Wuhan University of Technology, Wuhan, China
- 14 Research Center for Materials Genome Engineering, Wuhan University of Technology, Wuhan, China
- 15 Research Center for Materials Genome Engineering, Wuhan University of Technology, Wuhan, China
- 16 State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, China
Abstract
The micro/nano-scale indentation tests were performed to explore the performance of bisphenol-α-glycidyl methacrylate (Bis-GMA)/triethylene glycol dimethacrylate (TEGDMA) dental resin composites. The effect of the filling content of nano-SiO2 particles on the mechanical properties of the dental composites was studied as well. The experimental results showed that the incorporation of the nano-SiO2 particles at low concentrations (up to 10 wt.%) can apparently increase the hardness and elastic modulus of the dental rein composites. The plasticity index indicates a best elastic recovery capability at a proper amount (4 wt.%) of the nanoparticles. Combined with the infrared spectrum, the mechanical enhancement mechanisms of the dental resin composites were analyzed.
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