Journal
NANOMATERIALS
Volume 10, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/nano10101905
Keywords
multi-functional road coating; carbon nanotubes; electrical conductivity; hydrophobicity; freezing temperature sensing; Joule heating
Categories
Funding
- Korea Agency for Infrastructure Technology Advancement (KAIA)
- Ministry of Land, Infrastructure and Transport from the South Korea [KAIA20CTAP-C157167-01]
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A novel multi-functional road surface system is designed to improve safety, the efficiency of traffic flow, and environmental sustainability for future transportation systems. The surface coating, preforming temperature detection with heating element and hydrophobic features, were fabricated with a nanocomposite consisting of carbon nanotube (CNT) modified polyurethane (PU). The CNT/PU coating showed higher electrical conductivity as well as enhanced hydrophobic properties as the CNT concentration increased. The multifunctional properties of CNT/PU coatings were investigated for use in freezing temperature sensing and heating. The CNT/PU coatings showed high temperature sensitivity in the freezing temperature range with a negative temperature coefficient of resistance. In addition, the CNT/PU coatings had excellent heating performance due to the Joule heating effect. Therefore, the proposed CNT/PU coatings are promising for use as multifunctional road coating materials for detection of freezing temperature and deicing by self-heating.
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