Electrical conductivity of polymers containing carbon black
作者:
Mehrdad Ghofraniha,
R. Salovey,
期刊:
Polymer Engineering&Science
(WILEY Available online 1988)
卷期:
Volume 28,
issue 1
页码: 58-63
ISSN:0032-3888
年代: 1988
DOI:10.1002/pen.760280110
出版商: Society of Plastics Engineers
数据来源: WILEY
摘要:
AbstractChanges in volume resistivity with temperature of carbon‐black‐filled polymers and a random copolymer of styrene and butyl methacrylate were measured. For polystyrene containing 20 wt % carbon black, of surface area 24 m2/g, the resistivity changes abruptly from 1013to 106ohm‐cm above 150°C. Poly(butyl methacrylate) did not show well‐defined changes in resistivity on heating. The random copolymer containing 16.7 or 28.6 wt % carbon black, of surface area 24 m2/g, showed a resistivity exceeding 1013ohm‐cm, that decreased to about 107ohm‐cm on heating above 120°C. This Copolymer containing 16.7 wt % carbon black, of surface area 625 m2/g, shows a resistivity of about 108 ohm‐cm that decreases sharply to 103ohm‐cm by 150°C. Decreases in resistivity on increasing the temperature in the quiescent state are correlated with the observation of a yield stress at low shear rates in rheological studies. It is suggested that carbon black agglomerates at elevated temperature and forms an independent conductive network
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