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Strain‐dependent dynamic properties of filled rubber network systems
Author(s) -
Lin ChenRon,
Lee YuDer
Publication year - 1996
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.1996.040050605
Subject(s) - natural rubber , materials science , dynamic mechanical analysis , strain (injury) , composite material , percolation (cognitive psychology) , modulus , dynamic modulus , amplitude , physics , polymer , optics , neuroscience , medicine , biology
A model for strain‐dependent dynamic properties of filler loaded rubber systems has been derived based on the Links‐Nodes‐Blobs (L‐N‐B) model of percolation theory. It is the first time that a L‐N‐B model is applied in the study of dynamic properties of filled rubbers. The density distribution function of the number of singly connected bonds f 1 a (ϵ) and the apparent yield strain amplitude ϵ app that corresponds to the on‐set point of corruption of the filler network are introduced in the model. Simulation results indicate that both f 1 a (ϵ) and ϵ app control the break‐down and recombination of the filler network. Two recombination mechanism are adopted in this study. Results of simulations from the extreme ends recombination mechanism match the experimental data better than those from the zero strain recombination mechanism. Also, via the proposed model, the strain‐dependent storage modulus correlates well with the peak loss modulus at a low strain range of around 0.1% to 100%. Moreover, a universal plot of the normalized storage modulus (Z L‐N‐B ) as a function of the normalized Log strain amplitude (ϵ 0 /ϵ app ) for different rubber systems is obtained. The loss moduli of systems are also simulated by the L‐N‐B model.