Effect of BaTiO3 on the Mechanical Properties of Nitrile-Butadiene Rubber (NBR) Vulcanizates | ||
| Egyptian Journal of Solids | ||
| Article 13, Volume 29, Issue 1, 2006, Pages 193-204 PDF (233.06 K) | ||
| DOI: 10.21608/ejs.2006.149153 | ||
| Abstract | ||
| The effect of BaTio3 content on the elastic behaviour of Nitrrile- Butadiene Rubber (NBR) vulcanizates loaded with 65 phr of Super Reinforced Furnace (SRF) black has been studied by carrying out equilibrium stress-strain measurements at 300K. Young’s modulus (E) and the number of effective chains per unit volume (ν) as a function of BaTiO3 content were calculated. A small increase at low contents was detected followed with a large decrease at high concentrations. The average molecular weight (Me) was found to have an opposite behaviour of (ν). The maximum change in entropy (ΔSmax) and the work done (W) on rubber chains during extension were found to decrease slightly at low loading followed with a high increase at high BaTiO3 loadings. Stress-strain cycling was also carried out and hysteresis was found. The energy density loss and the remnant strain after each cycle were also studied. | ||
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