3D printing of biomimetic liquid crystal elastomers with enhanced energy absorption capacities

被引:0
|
作者
Zhao, Yao [1 ]
Li, Jianyang [1 ]
Ren, Lei [1 ,3 ,4 ]
Liu, Qingping [1 ,2 ,3 ]
Ren, Luquan [1 ,2 ,3 ]
Wang, Kunyang [1 ,3 ]
Li, Bingqian [1 ,2 ]
机构
[1] Jilin Univ, Key Lab Bion Engn, Minist Educ, Changchun 130022, Peoples R China
[2] Jilin Univ, Weihai Inst Bion, Weihai 264207, Peoples R China
[3] Liaoning Acad Mat, Inst Struct & Architected Mat, Shenyang 110167, Peoples R China
[4] Univ Manchester, Sch Mech Aerosp & Civil Engn, Manchester M13 9PL, England
来源
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 33卷
基金
中国国家自然科学基金;
关键词
3D printing; Biomimetic; Spider dragline silks; Liquid crystal elastomers; Energy absorption;
D O I
10.1016/j.jmrt.2024.10.197
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Spider dragline silks are noted for their unmatched toughness, which arises from their unique primary structure. However, the underlying mechanisms of this toughness have seldom been verified using synthetic structural materials. Liquid crystal elastomers (LCEs) are polymer networks with mechanical properties bearing high resemblances to those of spider silks, and are ideal material for mimicking the primary structure of spider silk and revealing its toughing mechanisms. This study introduces a LCEs-based energy absorption structure that mimics the primary structure of spider dragline silks via 3D printing method. This LCEs-based biomimetic structure offers superior toughness and energy absorption capabilities with a damping capacity of 90%, significantly surpassing that of both artificial and biological viscoelastic materials. We successfully demonstrated that the biological primary structure provides the highest energy absorption capacity than other structures. This superior energy absorption capability was examined through hysteresis tests and then validated through intuitive ball free-falling tests. The work will illuminate a new pathway in the development of kinetic energy buffering and absorption materials.
引用
收藏
页码:5683 / 5691
页数:9
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