Dynamic mechanical behavior of filled rubber at small strains

Abstract

SynopsisThe strain and temperature dependence of the dynamic properties of rubber containing various concentrations of carbon black were characterized. The measurements, obtained at lower strain amplitudes ( ~10~') than previous studies, indicate that flocculation of the carbon black particles, and the enhanced modulus and damping effected by it, are likely existent prior to any deformation. The disruption of the carbon black network structure was found to be independent of the mechanical behavior of the polymer, occurring at the same macroscopic strain independently of the stress level. The implications of this in terms of the flocculation process are discussed. At reduced temperatures, filler interparticle interactions intensify, and consequently their contribution to the mechanical properties increases. This greater influence of the filler structure is observed even as the glass transition of the rubber is approached and the behavior of the rubber and carbon black phases converge.

Modelling of frequency- and amplitude-dependent material properties of filler-reinforced rubber

“…Within certain strain amplitude limits, it is common practice, to neglect any higher-order terms in the material response. For details in this context, the reader is referred to Roland (1990). Thus, a linear transfer behaviour with sðtÞ ffi s 0 þ D½G 0 sinðotÞ þ G 00 cosðotÞ or sðtÞ ffi s 0 þ D G Ã sinðot À dÞ (2) is assumed.…”

Viscoelastic and dielectric properties of composites of poly(vinyl butyral) and alumina particles with a high filling degree

“…The mechanical and flow properties of filled composites are strongly influenced by interparticle and polymer-filler interactions [10,11]. Particle-matrix and filler-filler interactions in polymer composites were investigated in several theoretically and experimentally oriented publications [12][13][14][15][16][17][18][19].…”

Simulation of Payne Effect of Elastomeric Isolators with a Harmonic Balance Method

“…Concerning Payne effect in viscoelastic materials, it has been described that, within certain strain amplitude limit, higher-order terms are not significant in the material response. The reader is referred to Roland [21] for more details. Consequently, a single harmonic has been retained in the HBM procedure leading to the following equation system (see Appendix 1 for more details):…”

“…This approach uses a non linear harmonic balance method to deal with amplitude dependency. Only first harmonic is retained here due to practical observation [21]. However, more harmonics may be used in case of stronger non linearities.…”