Volume 37, Issue 5 pp. 1327-1337
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Influence of hydrostatic pressure on the electrical properties of unvulcanized FEF-loaded SBR

G. M. Nasr

G. M. Nasr

Physics Department, Faculty of Science, Cairo University, Giza, Egypt

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M. Amin

M. Amin

Physics Department, Faculty of Science, Cairo University, Giza, Egypt

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H. M. Osman

H. M. Osman

Physics Department, Faculty of Science, Cairo University, Giza, Egypt

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M. M. Badawy

M. M. Badawy

Physics Department, Faculty of Science, Cairo University, Giza, Egypt

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First published: 5 February 1989
Citations: 6

Abstract

Styrene butadience rubber (SBR-1502) loaded with different concentrations of FEF carbon black was tested to find out the effect of pressure on its electrical properties during vulcanization. Using the thermodynamically calculated values of the pressure coefficient (K), the thermoelastic coefficient (L = ∂T/∂P) was also estimated and compared with that obtained by other workers. The thermoelastic coefficient was found to be strongly dependent on the carbon black concentration.

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