Conductivity Studies of Acrylonitrile Butadiene Rubber Composites Loaded with Different Types of Carbon Blacks

Morsi, R.M.M.; Ismail, ,  M.N.; Yehia, A.A.

doi:10.21608/jtcps.2010.30564

Conductivity Studies of Acrylonitrile Butadiene Rubber Composites Loaded with Different Types of Carbon Blacks

Document Type : Original Article

Authors

¹ Dept. of Physical Chemistry and *Dept. of Polymers and Pigments, National Research Centre, Cairo, Egypt

² Dept. of Physical Chemistry and *Dept. of Polymers and Pigments, National Research Centre, Cairo, Egypt.

10.21608/jtcps.2010.30564

Abstract

THE EFFECT of three types of carbon blacks namely: High abrasion furnace black (HAF), graphite and acetylenic carbon black on the electrical and mechanical properties of NBR composites were investigated. The conductivity of NBR composites is found to be 7 orders of magnitude higher than that of the filler-free NBR. It reaches ~10⁻³ S cm⁻¹ at ~30^oC in case of NBR composites loaded with acetylenic carbon black. The tensile strength of NBR/filler composites has been markedly increased, indicating high reinforcement efficiency, i.e., good interaction between the fillers and NBR. The NBR/HAF composites have the highest tensile strength, then NBR/Acetylenic CB and then NBR/graphite composites. The elongation at break of NBR/ filler composites was found to decrease with increasing the filler content.

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