English Abstract

Nonlinear Rheology of Rubber Materials

Yoshinobu ISONO
Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology, Niigata, Japan
Nippon Gomu Kyokaishi,(2013),86(4),106-112 General Review in Japanese

Polymer and rubber materials show remarkable nonlinear viscoelasticity. The nonlinearity may be due to change in material structures, i.e. entanglement and filler structures. The way of thinking leads us to make simultaneous measurements of the responses to large stimuli and additional responses to perturbative stimuli, i.e. differential dynamic modulus and volume resistivity. It has been found that nonlinear viscoelastic properties of entanglement and filler dispersed polymeric systems originate with ruptures in entanglement and filler networks. Rheology gives us extremely effective tool to detect such change in various network structures.

Keywords: Entanglement Network, Filler Network, Dynamic Modulus, Nonlinear Viscoelasticity, Volume Resistivity