✦ LIBER ✦

Studies on the electrical conductivity of carbon black filled polymers

✍ Scribed by Hao Tang; Xinfang Chen; Aoqing Tang; Yunxia Luo

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 331 KB
Volume: 59
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19960118)59:3<383::aid-app1>3.0.co;2-l

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✦ Synopsis

The conductivity mechanism for a carbon black (CB) filled high-density polyethylene (HDPE) compound was investigated in this work. From the experimental results obtained, it can be seen that the relation between electrical current density (J) and applied voltage across the sample (v) coincides with Simmons's equation (i.e., the electrical resistivity of the compound decreases with the applied voltage, especially at the critical voltage). The minimum electrical resistivity occurs near the glass transition temperature (T,) of HDPE (198 K). It can be concluded that electron tunneling is an important mechanism and a dominant transport process in the HDPE/CB composite. A new model of carbon black dispersion in the matrix was established, and the resistivity was calculated by using percolation and quantum mechanical theories.

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