Resitivity-temperature Characteristics of CB/HDPE Gel Composites Formed Under Electron Beam Irradiation

Abstract

Abstract: Resistivity-temperature characteristics of CB/HDPE composites crosslinked by irradiation of electron beam were studied. The results showed that CB/HDPE gel composites, which were generated through extraction by xylene for crosslinked samples, exhibited much higher PTCintensity and distinctive NTCeffect during the first heating-cooling cycle. But much better stability of resistivity as well as diminished NTC effect were observed when the composites was exposed to heating-cooling cycles subsequently. The phenomena observed above were related to the structure stability of the gel, suggesting that crosslinking of the polymeric matrix is an effective method to stabilize conductivity and alleviate NTCeffect for polymer composites filled with conductive particles.

Key words: Carbon black/high density polyethylene conductive composites, Gel, Electron beam irradiation, Crosslinking, Resistivity-temperature characteristics

CLC Number:

TM243

TrendMD:

ZHANG Jian-Feng, ZHENG Qiang, CAO Su-Hua, YI Xiao-Su . Resitivity-temperature Characteristics of CB/HDPE Gel Composites Formed Under Electron Beam Irradiation[J]. Chem. J. Chinese Universities, 1999, 20(12): 1974.

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Resitivity-temperature Characteristics of CB/HDPE Gel Composites Formed Under Electron Beam Irradiation

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