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.

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 ~30oC 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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