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使用涂覆有多壁碳纳米管的导电薄膜的水泥复合材料的加热性能和电学性能

Heating Performance and Electrical Properties of Cement Composites Using Conductive Films Coated with Multi-Walled Carbon Nanotubes.

作者信息

Park Jong-Gun, Seo Dong-Ju, Yun Chang-Ho, Kim Tae-Hyoung, Song Ki-Chang, Heo Gwang-Hee

机构信息

Public Safety Research Center (PSRC), Konyang University, 121, Daehak-ro, Nonsan-si 32992, Republic of Korea.

Department of Disaster and Safety Engineering, Konyang University, 121, Daehak-ro, Nonsan-si 32992, Republic of Korea.

出版信息

Materials (Basel). 2025 Jun 12;18(12):2773. doi: 10.3390/ma18122773.

DOI:10.3390/ma18122773
PMID:40572906
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12194890/
Abstract

In this study, multi-walled carbon nanotubes (MWCNTs) were uniformly applied to polyethylene terephthalate (PET) film using a bar-coating method to fabricate conductive thin films, and their transmittance, surface morphology, and effects on the heating and electrical properties of cement composites were analyzed. The experimental parameters considered were the mixing method, MWCNT concentrations, use or absence of coating films, applied voltages, and electrode spacings. Considering these parameters, the cement composites were divided into a total of four groups and then fabricated. Group 1 is a method for fabricating plain cement composites (PCCs), while Group 2 is a method for fabricating PCC using only MWCNT-coated films. Group 3 is a method for fabricating PCC by adding only MWCNT dispersion, and finally, Group 4 is a method for fabricating PCC using both MWCNT dispersion and MWCNT-coated films. Furthermore, field emission scanning electron microscope (FE-SEM) image analysis confirmed that MWCNT were evenly distributed across the entire front surface of the PET film and formed a dense network structure. The experimental results of cement composites using these showed that when both MWCNT dispersion and MWCNT-coated films were used, the electrical resistance was significantly reduced and the heating performance was improved. In particular, when the electrode spacing was 40 mm and the applied voltage was 30 V, the MDCF-0.75 specimen exhibited the highest heating performance and the lowest electrical resistance.

摘要

在本研究中，采用刮涂法将多壁碳纳米管（MWCNTs）均匀地施加到聚对苯二甲酸乙二酯（PET）薄膜上以制备导电薄膜，并分析了它们的透光率、表面形态以及对水泥复合材料加热和电学性能的影响。所考虑的实验参数包括混合方法、MWCNT浓度、是否使用涂膜、施加电压和电极间距。考虑这些参数后，将水泥复合材料总共分为四组然后进行制备。第1组是制备普通水泥复合材料（PCCs）的方法，而第2组是仅使用MWCNT涂层薄膜制备PCC的方法。第3组是仅添加MWCNT分散体来制备PCC的方法，最后，第4组是同时使用MWCNT分散体和MWCNT涂层薄膜来制备PCC的方法。此外，场发射扫描电子显微镜（FE-SEM）图像分析证实，MWCNT均匀分布在PET薄膜的整个前表面上，并形成了致密的网络结构。使用这些材料的水泥复合材料的实验结果表明，当同时使用MWCNT分散体和MWCNT涂层薄膜时，电阻显著降低，加热性能得到改善。特别是，当电极间距为40 mm且施加电压为30 V时，MDCF-0.75试样表现出最高的加热性能和最低的电阻。

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本文引用的文献

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A Comparison of the Resistance- and Capacitance-Based Sensing of Geopolymer and Cement Composites with Graphite Filler Under Compression.基于电阻和电容的地聚合物与含石墨填料的水泥复合材料在压缩状态下的传感比较
Materials (Basel). 2025 Feb 8;18(4):750. doi: 10.3390/ma18040750.
2
Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers.包含多壁碳纳米管和碳纤维的水泥基复合材料的电阻率和焦耳热特性
Materials (Basel). 2022 Nov 15;15(22):8055. doi: 10.3390/ma15228055.