电流变弹性体的电致变形-变模量双功能研究  

Electric field induced deformation and tuned modulus of electrorheological elastomers

作　　者：龚光平 李楠楠 赵增辉 董旭峰[2] GONG Guangping;LI Nannan;ZHAO Zenghui;DONG Xufeng(Department of Engineering Mechanics,Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology,Dalian 116024,Liaoning,China;School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]大连理工大学运载工程与力学学部,工程力学系,辽宁大连116024 [2]大连理工大学材料科学与工程学院,辽宁大连116024

出　　处：《实验力学》2021年第6期746-752,共7页Journal of Experimental Mechanics

基　　金：国家重点研发计划资助项目(2018YFC0705603);国家级“大创计划”项目(20211014140054)。

摘　　要：开发变形-变模量双功能智能材料对促进软体机器人的发展具有重要意义。电流变弹性体具有显著的电致变模量效应,从成分上亦可视为一种复合型介电弹性体,理论上也应具有显著的电致变形效应。本文以尿素改性TiO_(2)颗粒为填充相,以硅橡胶为基体制备电流变弹性体,并对其电致变模量效应及电致变形效应进行研究。电致变模量测试结果表明,电流变弹性体的储能模量随电场强度增大而增大,在3kV/mm的电场强度下其相对电流变效应达到16%;电致变形测试结果表明,电流变弹性体亦具有显著的电致变形能力,在电场强度为3kV/mm时,其电致形变量较硅橡胶提高1.8倍。电流变弹性体的电致变形-变模量双功能使其有望被用于开发新一代的软体驱动器。It is of great significance to develop dual-functional smart materials with deformability and modulus tunable capacity for promoting the development of soft robots.The electrorheological elastomer has significant electric field tuned modulus effect.However,it also can be regarded as a kind of dielectric composites in composition.Theoretically,it should also have significant electric field induced deformation effect.In this paper,the electrorheological elastomer was prepared with urea modified TiO_(2) particles as the filling phase and silicone rubber as the matrix,and the electric field tuned modulus and electric field induced deformation effect were studied.The results of electric field tuned modulus test showed that the storage modulus of the electrorheological elastomer increased with the increase of electric field intensity,and the relative electrorheological effect reached 16%at the electric field intensity of 3kV/mm.The results of electric field induced deformation test showed that the electrorheological elastomer also had significant electric field induced deformation ability.When the electric field intensity was 3kV/mm,the electric field induced deformation was 1.8 times higher than that of silicone rubber.The electrorheological elastomers with such electric field induced deformation and tuned modulus make it has the potential to be used to develop a new generation of soft actuators.

关 键 词：电流变弹性体 介电弹性体 电致变形 电致变模量 软体机器人 

分 类 号：TB381[一般工业技术—材料科学与工程]