Ultrahigh energy-dissipation elastomers by precisely tailoring the relaxation of confined polymer fluids

Jin Huang, Yichao Xu, Shuanhu Qi, Jiajia Zhou (), Wei Shi, Tianyi Zhao and Mingjie Liu ()
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Jin Huang: Beihang University
Yichao Xu: Beihang University
Shuanhu Qi: Beihang University
Jiajia Zhou: Beihang University
Wei Shi: Beihang University
Tianyi Zhao: Beihang University
Mingjie Liu: Beihang University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Energy-dissipation elastomers relying on their viscoelastic behavior of chain segments in the glass transition region can effectively suppress vibrations and noises in various fields, yet the operating frequency of those elastomers is difficult to control precisely and its range is narrow. Here, we report a synergistic strategy for constructing polymer-fluid-gels that provide controllable ultrahigh energy dissipation over a broad frequency range, which is difficult by traditional means. This is realized by precisely tailoring the relaxation of confined polymer fluids in the elastic networks. The symbiosis of this combination involves: elastic networks forming an elastic matrix that displays reversible deformation and polymer fluids reptating back and forth to dissipate mechanical energy. Using prototypical poly (n-butyl acrylate) elastomers, we demonstrate that the polymer-fluid-gels exhibit a controllable ultrahigh energy-dissipation property (loss factor larger than 0.5) with a broad frequency range (10−2 ~ 108 Hz). Energy absorption of the polymer-fluid-gels is over 200 times higher than that of commercial damping materials under the same dynamic stress. Moreover, their modulus is quasi-stable in the operating frequency range.

Date: 2021
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DOI: 10.1038/s41467-021-23984-2

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