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Improved monitoring of temperature changes

Influence of temperature and humidity on resistance of carbon nanotube based coatings
: Maier, Mathias; Nemec, Dominik; Kolaric, Ivica

Fulltext urn:nbn:de:0011-n-1571671 (106 KByte PDF)
MD5 Fingerprint: 221c0304c134e74979edb2e75d1abaf5
Created on: 01.10.2011

European coatings journal 26 (2011), No.4, pp.130-133
ISSN: 0930-3847
Journal Article, Electronic Publication
Fraunhofer IPA ()
Carbon Nanotube (CNT); compound; Feuchtigkeit; Beschichten; Polymer; Verbundwerkstoff; Widerstandsmessung

Multi-walled and single-walled carbon nanotube (CNT) based coatings can potentially be employed as temperature-sensitive coatings on electrical circuit boards. A critical factor is the degree of dependence of the electrical resistance to temperature change. CNT-dispersant coating and CNT-silicone-compound are compared as possible solutions.
CNT-dispersant-coatings and CNT-silicone-coatings, made of multi-walled carbon nanotubes and singlewalled carbon nanotubes were tested for variations in resistivity to changes of environmental conditions of humidity and temperature.
The resistance of coatings consisting of "Baytubes C150P" and gum arabic is highly influenced by humidity while the silicone-compound using the SZ nanotubes is hardly affected.
The resistance of all the compositions investigated was found to be temperature dependent.
Due to their favourable properties, SZ-silicone coatings could possibly find application as temperature-sensing materials.