| Title |
Preparation of MWCNT Conductive Coating fiber with Self-Heating and Electrical Properties |
| Authors |
김훈관(Kim, Hun Kwan);박종건(Park, Jong Gun);송기창(Song, Ki Chang);허광희(Heo, Gwang Hee) |
| DOI |
https://doi.org/10.12652/Ksce.2026.46.1.0053 |
| Keywords |
다중벽 탄소나노튜브; PET 섬유; 전도성 코팅; 자가 발열; 전기저항 Multi-Walled carbon nanotubes; PET fiber; Conductive coating; Self-heating; Electrical resistance |
| Abstract |
In this study, multi-walled carbon nanotubes (MWCNTs) were deposited onto polyethylene terephthalate (PET) fibers using a dip-coating process in order to impart electrical conductivity and Joule heating capability, with the ultimate goal of enhancing their applicability to winter road de-icing systems. By employing a simple and scalable coating technique, conductive networks of MWCNTs were successfully formed on the surface of PET fibers without altering the inherent flexibility and lightweight nature of the polymer substrate. The influence of varying MWCNT mixing ratios on surface morphology, electrical resistance, and heating performance was systematically investigated to establish structure?property relationships. As the MWCNT loading ratio increased, a more continuous and interconnected conductive network was observed on the fiber surface, leading to a pronounced reduction in electrical resistance. Correspondingly, under the application of direct current (DC) voltage, the coated fibers exhibited improved heat generation efficiency and higher steady-state temperatures. Scanning electron microscopy (SEM) analysis clearly confirmed the formation and uniformity of the MWCNT coating layers on the PET fibers. These results demonstrate that MWCNT-coated PET fibers possess stable electrical and thermal performance and highlight their potential as effective conductive and self-heating materials for infrastructure applications exposed to low-temperature environments, such as winter road surfaces and cold-region facilities. |