The stabilization effect of radiation crosslinking on positive temperature coefficient performances of carbon black-polymer composites

Strategies for improving positive temperature effects in conductive polymer composites – a review

“…As a result, the NTC effect of PTC composites can be weakened or eliminated, 115 and the composites can exhibit more stable conductive behavior. 45,116 The common crosslinking methods of polymers mainly include chemical crosslinking 117 and radiation crosslinking. 118…”

“…As a result, the NTC effect of PTC composites can be weakened or eliminated, 115 and the composites can exhibit more stable conductive behavior. 45,116 The common crosslinking methods of polymers mainly include chemical crosslinking 117 and radiation crosslinking. 118 Yue et al 119 prepared the HDPE/TPO/CB composites by introducing CB and amorphous elastomer (TPO) into the HDPE using melting mixing and hot pressing methods and then treated the composites with isodipropylbenzene peroxide (DCP) crosslinking to improve the PTC performance.…”

Positive temperature coefficient to resistively characteristics of polystyrene/nickel powder/multiwall carbon nanotubes composites

“…Most of the work has been done to eliminate negative temperature coefficient to resistivity (NTCR) effect that limits their application in over-temperature protections [5][6][7], to increase PTC intensity, reduce room temperature resistivity, increase reproducibility and repeatability, reduce the percolation threshold etc. Crosslinking of the semicrystalline polymer matrix by chemical and radiation methods has been reported to eliminate the NTCR effect [5][6][7][8][9][10]. Lee et al [11] reported improvement in PTC intensity and repeatability in HDPE/CB composite in the presence of small amount of multi-walled carbon nanotube (MWCNT).…”