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A comparative study on the effect produced by fillers specifics on the dynamic mechanical and dielectric properties of natural rubber based composites

Omar A.Al-Hartomy, Ahmed A.Al-Ghamdi, Falleh R.Al-Solamy, Nikolay Dishovsky, Mihail Mihaylov, Milcho Ivanov, Farid El-Tantawy

This paper presents the results on the effect of specific characteristics of three completely different carbon black upon the dynamic mechanical and dielectric thermal properties of natural rubber based composites. It has been found that the size of carbon black particles, its specific surface area, respectively, as well as the ability of carbon black particles to formvarious aggregates and agglomerates affect both the dynamic mechanical and dielectric properties of the prepared composites. At the same concentration of all fillers studied the dynamic mechanical properties of the composites filled with high structure carbon black having super high specific surface area are much better than those of the composites filled with conventional carbon black. The same is valid for their dielectric permittivity (åÂ’) values which are of about two-three orders higher.