Effects of carbon nanotubes and carbon fiber reinforcements on thermal conductivity and ablation properties of carbon/phenolic composites |
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| Affiliation: | 1. Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University, Jinju 660-701, Republic of Korea;2. School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Republic of Korea;3. Agency for Defense Development, 4-R&D Center, Daejeon 305-600, Republic of Korea;4. Department of Mechanical Engineering, The University of Utah, Salt Lake City, UT 84112, USA;1. School of Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University, Jinju 660-701, Republic of Korea;2. Department of Mechanical Engineering, The University of Utah, Salt Lake City, UT 84112, USA;1. Department of Materials Engineering and Convergence Technology, Research Institute for Green Energy Convergence Technology, Center for Creative Human Resource & Convergence Materials, Gyeongsang National University, Jinju 660-701, Republic of Korea;2. Department of Mechanical Engineering, The University of Utah, Salt Lake City, UT 84112, USA;1. School of Mechanical and Building Science (SMBS), VIT University, Chennai Campus, India;2. Department of Mechanical Engineering, College of Engineering, Anna University, Chennai, India |
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| Abstract: | The ablation properties and thermal conductivity of carbon nanotube (CNT) and carbon fiber (CF)/phenolic composites were evaluated for different filler types and structures. It was found that the mechanical and thermal properties of phenolic-polymer matrix composites were improved significantly by the addition of carbon materials as reinforcement. The concentrations of CF and CNT reinforcing materials used in this study were 30 vol% and 0.5 wt%, respectively. The thermal conductivity and thermal diffusion of the different composites were observed during ablation testing, using an oxygen–kerosene (1:1) flame torch. The thermal conductivity of CF mat/phenolic composites was higher than that of random CF/phenolic composites. Both CF mat and CNT/phenolic composites exhibited much better thermal conductivity and ablation properties than did neat phenolic resin. The more conductive carbon materials significantly enhanced the heat conduction and dissipation from the flame location, thereby minimizing local thermal damage. |
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| Keywords: | A Carbon fiber B Thermal properties C Micro-mechanics D Thermal analysis |
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