Temperature and frequency dependent rheological behaviour of carbon black filled natural rubber

Abstract

The temperature and frequency dependent viscoelasticity of carbon black filled rubber is investigated. Temperature sweep and frequency sweep dynamic mechanical analysis tests are performed to investigate the frequency dependent glass transition temperature and to identify the thermorheological nature of the material. The test results show that master curves of dynamical properties can be constructed by horizontal shifts along the frequency axis alone and cover a frequency range of 21 decades, verifying the material’s thermorheological simplicity. This simplicity is confirmed by van Gurp–Palmen and Cole–Cole plots. Moreover, the temperature dependence of the shift factor is modelled well by both the Williams–Landel–Ferry equation and the Arrhenius equation.

Keywords:

• Rubber
• Dynamic mechanical properties
• Shift factor
• van Gurp–Palmen plot
• Cole–Cole plot
• Thermorheological simplicity

This work was supported by the NSFC (grant no. 11172256), the Hunan Provincial Science and Technology Programme (grant no. 2012FJ4061), the Hunan Provincial Innovation Foundation for Postgraduates (grant no. CX2012B258) and the Aid Programme for Science and Technology Innovative Research Teams in Higher Educational Institutions of Hunan Province, China.