| 碳纤维对甘二烷相变材料热性能的影响 |
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| 引用本文： | 李敏,吴智深,陈振乾,彭昌海. 碳纤维对甘二烷相变材料热性能的影响[J]. 东南大学学报, 2010, 26(2): 346-350 |
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| 作者姓名： | 李敏 吴智深 陈振乾 彭昌海 |
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| 作者单位： | 李敏(东南大学江苏省土木工程材料重点实验室,南京,211189;东南大学低碳型建筑环境设备与系统节能教育部工程研究中心,南京,210096);吴智深,陈振乾,彭昌海(东南大学低碳型建筑环境设备与系统节能教育部工程研究中心,南京,210096) |
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| 基金项目： | The National Natural Science Foundation of China，the National Key Technology R & D Program of China during the 11th Five-Year Plan Period，Six Projects Sponsoring Talent Summits of Jiangsu Province |
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| 摘 要： | 对采用热的良导体——碳纤维改善相变材料的热传导速率开展了研究.通过碳纤维与甘二烷的物理混合制备了相变复合材料.采用示差扫描分析法、热重分析法和差示热分析法测试了此相变复合材料的热性能.研究了碳纤维的掺量与长度对甘二烷热传导性能的影响.研究结果表明,碳纤维能有效地改善甘二烷的热传导速率,碳纤维的掺量和长度是2个主要的影响因素.随着碳纤维掺量的增加,甘二烷的储热、放热速率增加.掺入碳纤维后,甘二烷的熔点从40.2℃增加到50.8℃.当掺入6%的碳纤维后,升温所需时间从720s降至660s;当掺入10%的碳纤维后,升温所需时间从720s降至600s.
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| 关 键 词： | 相变材料 碳纤维 导热性 甘二烷 |
Effect of carbon fiber on thermal properties of n-Docosane phase change materials |
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| Li Min,Wu Zhishen Chen Zhenqian Peng Changhai. Effect of carbon fiber on thermal properties of n-Docosane phase change materials[J]. Journal of Southeast University(English Edition), 2010, 26(2): 346-350 |
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| Authors: | Li Min Wu Zhishen Chen Zhenqian Peng Changhai |
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| Affiliation: | 1.Jiangsu Province Key Laboratory of Construction Materials,Southeast University,Nanjing 211189,China;2.Low-Carbon Building Environment Equipment and System Energy-Saving Engineering Center of Ministry of Education,Southeast University,Nanjing 210096,China) |
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| Abstract: | The improvement of the heat transfer rate of phase change material（PCM）is studied by mixing with carbon fiber（CF）which is a good heat conductor.The composite PCM is prepared by blending CF and n-Docosane and its thermal performance is tested using the method of differential scanning calorimetry（DSC）analysis and thermogravimetric/differential thermal analysis（TG/DTA）.In addition,the influence of the mixing amount and the length of CF on the thermal conductivity of n-Docosane are investigated.The results show that CF can significantly improve the heat transfer rate of n-Docosane,and the mixing amount and the length of CF are two influence factors.The heat storage and release rates increase with the increase in the mixing amount of CF.Moreover,the melting point of n-Docosane is increased from 40.2 to 50.8 ℃ after being mixed with CF.The heating time is decreased from 720 to 660 s by mixing with 6% of CF,and is decreased to 600 s by mixing with 10% of CF. |
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| Keywords: | phase change material carbon fiber thermal conductivity n-Docosane |
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