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Open AccessArticle

Designing a Polymer-Based Hybrid with Simultaneously Improved Mechanical and Damping Properties via a Multilayer Structure Construction: Structure Evolution and a Damping Mechanism

1
College of Materials Science and Engineering, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China
2
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
3
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(2), 446; https://doi.org/10.3390/polym12020446
Received: 8 January 2020 / Accepted: 25 January 2020 / Published: 14 February 2020
(This article belongs to the Special Issue Multiphase Structure of Polymeric Materials and Physical Properties)
Though hindered phenol/polymer-based hybrid damping materials, with an excellent loss factor, attract more and more attention, the significantly decreased mechanical property and the narrow damping temperature range limit the application of such promising materials. To solve the problems, a polyurethane (hindered phenol)/polyvinyl acetate multilayer system with varied layer numbers was prepared in this study. The multilayer microstructures were first verified through the scanning electron microscopy. A subsequent molecular dynamics simulation revealed the promoted diffusion of polyurethane (hindered phenol) and polyvinyl acetate layers, the compact chain packing of the polyurethane (hindered phenol) layer, the extended chain packing of the polyvinyl acetate layer, the intermolecular hydrogen bonds among the three components and the enhanced interface interactions between the two layers in a quantitative manner. Further the mechanical and dynamic mechanical analysis detected the successful preparation of the multilayer hybrids with simultaneously improved mechanical and damping properties. Then, by a combination of molecular dynamics simulation and experiment, the relationship between the structure evolution and the properties of the multilayer hybrids was established, which was expected to have some guiding significance for industrial production. View Full-Text
Keywords: hindered phenol; mechanical property; damping property; multilayer hybrids; structure evolution hindered phenol; mechanical property; damping property; multilayer hybrids; structure evolution
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MDPI and ACS Style

Xu, K.; Hu, Q.; Wu, H.; Guo, S.; Zhang, F. Designing a Polymer-Based Hybrid with Simultaneously Improved Mechanical and Damping Properties via a Multilayer Structure Construction: Structure Evolution and a Damping Mechanism. Polymers 2020, 12, 446.

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