Thermomechanical Characterization of Carbon Black Reinforced Rubbers During Rapid Adiabatic Straining

The thermo-mechanical properties of carbon black reinforced natural and styrene butadiene rubbers are investigated under rapid adiabatic conditions. Eleven grades with varying surface area structure at 40 parts per hundred (phr) loading studied the unreinforced equivalents included for reference. results show a strong correlation modulus, mechanical hysteresis, temperature rise calculated crystallinity measured in tensile extension strain amplification factors. This highlights influence matrix overstraining on microstructural deformations rubber upon extension. factors via Guth-Gold equation directly from type loading, allowing fundamental morphological thermal Analysis measurements compounds retraction contrasting between crystallizing non-crystallizing reveals that substantial irreversible heat generation is present compounds. These effects most likely originate damage mechanisms which have been proposed to account Mullins Effect particle rubbers.