Abstract
Abstract Natural rubber (NR) composites filled with graphite (G) at various loading level was prepared by two roll mixing mill. Curing characteristics and dielectric properties were investigated and compared with NR/carbon black (CB) composites. The minimum and maximum torque of NR/CB composites increases upto 40phr loading. The same trend was found in NR /G composites upto 30 phr. Scorch time and optimum cure time of NR/ G are relatively higher than NR/CB composites. Dielectric parameters such as dielectric constant and loss factor increases on increase in CB. Graphite composites show maximum dielectric constant up to 20 phr. The frequency dependant dielectric loss factor of NR/CB is shows that, they are more conductive than NR/G composites.
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