

FOLLOWUS
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
s_yh0411@zju.edu.cn
Received:03 December 2020,
Revised:2021-1-1,
Accepted:11 January 2021,
Online First:14 April 2021,
Published:14 May 2021
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Hou, F. Y.; Song, Y. H.; Zheng, Q. Influence of liquid isoprene rubber on strain softening of carbon black filled isoprene rubber nanocomposites. Chinese J. Polym. Sci. 2021, 39, 887–895
Feng-Yi Hou, Yi-Hu Song, Qiang Zheng. Influence of Liquid Isoprene Rubber on Strain Softening of Carbon Black Filled Isoprene Rubber Nanocomposites[J]. Chinese Journal of Polymer Science, 2021, 39(7): 887-895.
Hou, F. Y.; Song, Y. H.; Zheng, Q. Influence of liquid isoprene rubber on strain softening of carbon black filled isoprene rubber nanocomposites. Chinese J. Polym. Sci. 2021, 39, 887–895 DOI: 10.1007/s10118-021-2550-y.
Feng-Yi Hou, Yi-Hu Song, Qiang Zheng. Influence of Liquid Isoprene Rubber on Strain Softening of Carbon Black Filled Isoprene Rubber Nanocomposites[J]. Chinese Journal of Polymer Science, 2021, 39(7): 887-895. DOI: 10.1007/s10118-021-2550-y.
The reinforcement of rubbers by nanoparticles is always accompanied with enhanced dissipation of mechanical energy upon large deformations. Methods for solving the contradiction between improving reinforcement and reducing energy dissipation for rubber nanocomposites have not been well developed. Herein carbon black (CB) filled isoprene rubber (IR)/liquid isoprene rubber (LR) blend nanocomposites with similar crosslink density (
ν
e
) are prepared and influence of LR on the strain softening behaviors including Payne effect under large amplitude shear deformation and Mullins effect under cyclic uniaxial deformation is investigated. The introduction of LR could improve the frequency sensitivity of loss modulus and reduce critical strain amplitude for Payne effect and loss modulus at the low amplitudes. Meanwhile
tuning
ν
e
and LR content allows reducing mechanical hysteresis in Mullins effect without significant impact on the mechanical performances. The investigation is illuminating for manufacturing nanocomposite vulcanizates with balanced mechanical hysteresis and reinforcement effect.
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