湿度和温度对MXene水泥基复合材料导电性能的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (9): 3117-3124.

湿度和温度对MXene水泥基复合材料导电性能的影响

林正祥¹, 唐晓丹², 于常胜¹, 白治朋², 职芳芳¹, 靳卫准¹, 王良³, 蒋林华¹

1.河海大学力学与材料学院,南京 211100;
2.中国长江电力股份有限公司,宜昌 443000;
3.浙江省水利河口研究院,杭州 310020

收稿日期:2023-04-19 修订日期:2023-06-20 出版日期:2023-09-15 发布日期:2023-09-14
通信作者: 蒋林华,博士,教授。E-mail:hhulhjiang@163.com
作者简介:林正祥(1999—),男,硕士研究生。主要从事新型水泥基材料方面的研究。E-mail:15295785610@163.com
基金资助:
国家自然科学基金(52078183);江苏省水利科技项目(2021018);浙江省水利厅科技计划(RB2217)

Effects of Humidity and Temperature on Electrical Conductivity of MXene Cement-Based Composites

LIN Zhengxiang¹, TANG Xiaodan², YU Changsheng¹, BAI Zhipeng², ZHI Fangfang¹, JIN Weizhun¹, WANG Liang³, JIANG Linhua¹

1. College of Mechanics and Materials, Hohai University, Nanjing 211100, China;
2. China Yangtze Power Co., Ltd., Yichang 443000, China;
3. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China

Received:2023-04-19 Revised:2023-06-20 Online:2023-09-15 Published:2023-09-14

摘要/Abstract

摘要： 为研究新型水泥基材料本征传感器,本文制备了二维过渡金属碳/氮化物(MXene)水泥基复合材料。利用四电极法测试复合材料的电阻率变化,研究MXene掺量、湿度、温度对电阻率的影响,并通过扫描电子显微镜(SEM)观察复合材料的微观形貌。结果表明:MXene水泥基复合材料电阻率随MXene掺量的变化符合渗流理论,相对含水量的增加和环境温度的升高均会降低其电阻率,在多次升降温循环后复合材料仍具有良好的温敏性能。SEM测试表明MXene水泥基复合材料的电阻率主要由MXene导电网络的分布和接触情况决定。

关键词: MXene, 水泥基复合材料, 电阻率, 导电网络, 相对含水量, 温度

Abstract: Two-dimensional transition metal carbon/nitride (MXene) cement-based composites were prepared to study a new type of cement-based material intrinsic sensor. The effects of MXene content, humidity and temperature on resistivity of composites were studied by four-electrode method. The microstructure of composites was observed by scanning electron microscope (SEM). The results show that the variation of electrical resistivity of MXene cement-based composites with content of MXene conforms to the percolation theory. The increasing of relative water content and ambient temperature decreases the electrial resistivity of composites, and composites has good temperature-sensitive performance after multiple rising and cooling cycles. SEM results show that the electrical resistivity of MXene cement-based composites is mainly determined by distribution and contact of MXene conductive network.

Key words: MXene, cement-based composites, electrical resistivity, conductive network, relative water content, temperature

中图分类号:

TU528

林正祥, 唐晓丹, 于常胜, 白治朋, 职芳芳, 靳卫准, 王良, 蒋林华. 湿度和温度对MXene水泥基复合材料导电性能的影响[J]. 硅酸盐通报, 2023, 42(9): 3117-3124.

LIN Zhengxiang, TANG Xiaodan, YU Changsheng, BAI Zhipeng, ZHI Fangfang, JIN Weizhun, WANG Liang, JIANG Linhua. Effects of Humidity and Temperature on Electrical Conductivity of MXene Cement-Based Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(9): 3117-3124.

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