| Title |
Preparation of MWCNT Conductive Coating Film with Self-Heating and Electrical Properties |
| Authors |
김태형(Kim, Tae Hyoung );서동주(Seo, Dong Ju);윤창호(Yun, Chang Ho);박종건(Park, Jong Gun);송기창(Song, Ki Chang);허광희(Heo, Gwang Hee) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.1.0059 |
| Keywords |
다중벽 탄소나노튜브; 전도성 코팅 필름; 자가 발열; 전기적 특성; 표면 코팅 |
| Abstract |
Multi-walled carbon nanotubes (MWCNT) have high electrical and thermal conductivity and are attracting attention as a heating material. These properties can efficiently convert electrical energy into heat and can be utilized in various fields such as heating devices, medical heating devices, smart fibers, and cement composites. In this study, MWCNT were mixed with polyurethane dispersion (PUD) to prepare coating solutions, which were then coated on the surface of polyethylene terephthalate (PET) film to prepare MWCNT conductive coating films. At this time, the transmittance, surface morphology, self-heating, and electrical properties of the MWCNT conductive coating film as a function of the different mixing ratios of MWCNT were analyzed. The results showed that as the amount of MWCNT added increased, the electrical resistance of the MWCNT conductive coating film rapidly decreased, while the self-heating effect tended to increase. It was confirmed through field emission scanning microscope (FE-SEM) that MWCNT were evenly dispersed on the surface of the PET film. From the results of this study, it is expected that the MWCNT conductive coating film will be suitable for applications in construction material fields such as entrances and exits of tunnels, snow and ice removal on pavements and bridges, as well as floor heating in buildings. |