Highly stretchable liquid metal/polyurethane sponge conductors with excellent electrical conductivity stability and good mechanical properties

被引：35
|
作者：
Ning, Nanying [1 ,2 ,3 ]
Huang, Wei [1 ,2 ]
Liu, Suting [4 ]
Zhao, Qi [1 ,2 ]
Zou, Hua [1 ,2 ]
Yu, Bing [1 ,2 ]
Tian, Ming [1 ,2 ,3 ]
Zhang, Liqun [1 ,2 ,3 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Beijing 100029, Peoples R China
[3] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China
[4] Weifang Vocat Coll, Dept Chem Engn, Weifang 262737, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2019年 / 179卷
关键词：
Stretchable conductor; Polyurethane sponge; Conductivity stability; Liquid metal; METAL ALLOY; FIBERS;
D O I：
10.1016/j.compositesb.2019.107492
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An all-soft, highly stretchable liquid metal (LM) conductor with high electrical conductivity, excellent electrical conductivity stability under various mechanical deformations and good mechanical properties was achieved. The stretchable conductor was prepared by infiltrating Gallium-indium-tin (GIT) LM into porous polyurethane sponge (PUS) with large porosity and small pores using a vacuumizing method followed by encapsulation with Polydimethylsiloxane (PDMS) to prevent the leakage of GIT-LM and to improve the mechanical properties. The as-made PDMS/PUS/LM composite shows a high tensile strength (1.11 MPa), high elongation at break (419%), excellent electrical conductivity (10(4) S/cm) and electrical conductivity stability under various mechanical deformations. The normalized resistance is of highly repeatability in stretch-release and bend-release cycle experiments.
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页数：8
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