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In situ melt grafting in carbon black/polyolefin composites and its influence on conductive performance
Author(s) -
Hou Yan Hui,
Zhang Ming Qiu,
Rong Min Zhi
Publication year - 2004
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1479
Subject(s) - materials science , carbon black , compounding , composite material , polyolefin , grafting , monomer , polyethylene , filler (materials) , polymer , carbon fibers , electrical conductor , natural rubber , composite number , layer (electronics)
To improve the conductive properties of carbon‐black‐filled low‐density polyethylene, in situ grafting of certain monomers was applied during the melt compounding process. The experimental data obtained demonstrated that chemical bonding could thus be established between the fillers and the matrix polymer. The degree of enhancement of the filler/matrix interfacial interactions in the composites prepared in this way depends on the species of the grafting monomers being employed. When compared with the untreated carbon black composites, the composites manufactured through in situ melt grafting exhibited reduced room temperature resistivities and greatly increased positive temperature coefficient intensities, as well as favorable performance reproducibility. This proposed technical route has several advantages, including simplicity, low cost and easy control. Copyright © 2004 Society of Chemical Industry