| CNT-CF水泥基材料传感特性研究 |
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| 引用本文： | 左俊卿,周虹,姚武,吴德龙,刘小艳,张玉梅.CNT-CF水泥基材料传感特性研究[J].材料导报,2017,31(22):125-129. |
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| 作者姓名： | 左俊卿 周虹 姚武 吴德龙 刘小艳 张玉梅 |
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| 作者单位： | 1. 上海建工集团股份有限公司 ,上海200080;上海高大结构高性能混凝土工程技术研究中心 ,上海201114;2. 同济大学先进土木工程材料教育部重点实验室 ,上海,201804;3. 河海大学力学与材料学院 ,南京,210098 |
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| 基金项目： | 国家自然科学基金(51508320)；上海市青年科技启明星计划资助项目(16QB1402000)；上海市国资委企业技术创新和能级提升项目(2014011) |
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| 摘 要： | 将碳纳米管与碳纤维混杂掺入水泥基材料制备碳纳米管-碳纤维(CNT-CF)水泥基材料,并研究其温敏和压敏传感特性。结果表明,当碳纳米管掺量较低时(0.5%),碳纳米管能有效提高CNT-CF水泥基材料的温敏和压敏特性;CNT-CF水泥基材料的活化能、温敏系数以及压敏传感线性程度和重复度均随碳纳米管掺量增加而提高;随着碳纳米管掺量继续增加,CNT-CF水泥基材料各项传感性能均有所下降。碳纳米管掺量为0.5%的试样传感特性最优。利用CNT-CF水泥基材料开发水泥基温敏、压敏传感器有一定应用前景。
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| 关 键 词： | CNT-CF/水泥基材料 传感特性 温敏 压敏 |
Research on the Sensing Properties of CNT-CF/Cement-based Materials |
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| ZUO Junqing,ZHOU Hong,YAO Wu,WU Delong,LIU Xiaoyan and ZHANG Yumei.Research on the Sensing Properties of CNT-CF/Cement-based Materials[J].Materials Review,2017,31(22):125-129. |
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| Authors: | ZUO Junqing ZHOU Hong YAO Wu WU Delong LIU Xiaoyan and ZHANG Yumei |
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| Affiliation: | Shanghai Construction Group Co., Ltd., Shanghai 200080;Shanghai Engineering Research Center of Mega Structure High Performance Concrete, Shanghai 201114,Shanghai Construction Group Co., Ltd., Shanghai 200080;Shanghai Engineering Research Center of Mega Structure High Performance Concrete, Shanghai 201114,Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804,Shanghai Construction Group Co., Ltd., Shanghai 200080;Shanghai Engineering Research Center of Mega Structure High Performance Concrete, Shanghai 201114,College of Mechanics and Materials, Hohai University, Nanjing 210098 and College of Mechanics and Materials, Hohai University, Nanjing 210098 |
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| Abstract: | Carbon nanotubes (CNTs) and carbon fibers (CFs) were incorporated into cement based materials to fabricate CNT-CF/cement-based materials. The temperature-sensitivity and pressure-sensitivity of CNT-CF/cement-based materials were studied. Results show that when content of CNTs is low (<0.5%), CNTs can effectively improve the temperature and pressure sensitive properties of CNT-CF/cement-based materials. The activation energy, temperature sensitivity coefficient, the linearity degree and repeatability rate of pressure-sensitivity increase as the CNT content increases. As the CNT content continue to increase, sensing properties of CNT-CF/cement-based materials decline. Specimen containing 0.5% (mass fraction) CNTs exhibits the optimal sensing properties. Using CNT-CF/cement-based materials to develop cement-based temperature sensor and pressure sensor has a certain application prospect. |
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| Keywords: | CNT-CF/cement based materials sensing properties temperature-sensitivity pressure-sensitivity |
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