Ultra‐Damping Composites Enhanced by Yolk–Shell Piezoelectric Damping Mechanism

Author:

Zheng Jiaqi1,Sun Shuang1,Hu Xu2,Yu Zhaohan1,Fu Yue1,Chen Dan1,Wang Dong1,Cai Weihao1,Zhou Huamin1,Wang Yunming1ORCID

Affiliation:

1. State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

2. Department of Frontier & Innovation Research Wuhan Second Ship Design & Research Institute No.19 Yangqiao Lake Avenue, Jiangxia District Wuhan 430205 P. R. China

Abstract

AbstractHigh‐performance damping materials are significant toward reducing vibration and maintaining stability for industrial applications. Herein, a yolk–shell piezoelectric damping mechanism is reported, which can enhance mechanical energy dissipation and improve damping capability. With the addition of yolk–shell particles and carbon nanotube (CNT) conductive network, damping properties of various resin matrices are enhanced with the energy dissipation path of mechanical to electrical to heat energy. Particularly, the peak loss factor of epoxy composites reaches 1.91 and tan δ area increases by 25.72% at 20 °C. The results prove the general applicability of yolk–shell piezoelectric damping mechanism. Besides, the novel damping materials also exhibit excellent flexibility, stretchability, and resilience, offering a promising application toward damping coating, indicating broad scope of application in transportation and sophisticated electronics, etc.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials

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