| 基于弱相互作用的石墨化CNT/PMMA复合材料的热电传输性能 |
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| 引用本文： | 曾尤,赵龙,刘鹏飞,杜金红,刘畅. 基于弱相互作用的石墨化CNT/PMMA复合材料的热电传输性能[J]. 高等学校化学学报, 2010, 31(6): 1263 |
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| 作者姓名： | 曾尤 赵龙 刘鹏飞 杜金红 刘畅 |
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| 作者单位： | 1. 沈阳建筑大学材料科学与工程学院, 沈阳 110168;2. 中国科学院金属研究所, 沈阳材料科学国家(联合)实验室, 沈阳 110016 |
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| 基金项目： | 国家自然科学基金，辽宁省教育厅项目，辽宁省高校重点实验室开放基金 |
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| 摘 要： | 从理论上计算了碳纳米管(CNT)与聚甲基丙烯酸甲酯(PMMA)的相互作用及浸润性, 并测试了CNT/PMMA复合材料的电学、热学和光学性能. 发现石墨化CNT/PMMA复合材料具有较好的导热和导电性能, 其渗流阈值在0.8%左右, 当CNT质量分数为3%时, 复合材料的导热系数提高193%. 这种电学及热学性能的提高一方面与石墨化CNTs的规整结构有关, 另一方面与石墨化CNT-PMMA体系的弱相互作用、CNT间的有效接触以及高效的CNT网络输运性能有密切关系. 研究结果表明, 通过调控CNT与聚合物基体的表面性质、相互作用及浸润性, 可以有效地构建优化的CNT输运网络, 获得性能优异的功能复合材料.
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| 关 键 词： | 碳纳米管 弱相互作用 聚甲基丙烯酸甲酯 复合材料 热电传输性能, |
| 收稿时间： | 2009-09-15 |
Thermal and Electrical Conductivities of the Graphitized Carbon Nanotube/poly (methyl methacrylate) Composites Based on Weak Nanotube-polymer Interactions |
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| ZENG You,ZHAO Long,LIU Peng-Fei,DU Jin-Hong,LIU Chang. Thermal and Electrical Conductivities of the Graphitized Carbon Nanotube/poly (methyl methacrylate) Composites Based on Weak Nanotube-polymer Interactions[J]. Chemical Research In Chinese Universities, 2010, 31(6): 1263 |
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| Authors: | ZENG You ZHAO Long LIU Peng-Fei DU Jin-Hong LIU Chang |
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| Affiliation: | 1. School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China;2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | Electrical and thermal conductivities of carbon nanotube(CNT)/polymer composites are greatly hindered by polymer-wrapping around CNTs due to high surface energy of CNTs.The graphitized multi-walled CNTs filled poly(methyl methacrylate)(PMMA) were investigated on the basis of surface physical chemistry and wetting thermodynamics.The electrical and thermal conductivities of the graphitized CNT/PMMA compo-sites were measured to evaluate enhancing effects of the graphitized CNTs.The graphitized CNT/PMMA composi... |
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| Keywords: | Carbon nanotube Weak interaction Poly(methyl methacrylate) Composite Thermal and electrical conductivity |
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