Study of electrical phenomena in carbon black–filled HDPE composite | Zendy

Lee Gun Joo | Zendy; Suh Kyung Do | Zendy; Im Seung Soon | Zendy

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Study of electrical phenomena in carbon black–filled HDPE composite

Author(s) -

Lee Gun Joo,

Suh Kyung Do,

Im Seung Soon

Publication year - 1998

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.10209

Subject(s) - materials science , carbon black , composite material , composite number , percolation (cognitive psychology) , high density polyethylene , thermal expansion , carbon fibers , resistor , electrical resistivity and conductivity , polyethylene , voltage , electrical engineering , natural rubber , neuroscience , biology , engineering

Percolation, positive temperature coefficient (PTC), and negative temperature co‐efficient (NTC) in carbon black‐filled HDPE composites, were studied by measuring AC electrical properties. An equivalent single parallel circuit model, which consists of a resistor and a capacitor, was adapted to explain the distribution of carbon black in composite. The electrical conductivity and admittance and phase angle were characterized by measuring the distribution of carbon black aggregates with an impedance analyzer. It was concluded that PTC is due to the deagglomeration or the breakage of the conduction networks caused by thermal expansion and/or crystalline melting of the matrix polymer, and NTC is due to the reagglomeration of the network of carbon black aggregates.

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