Silicon-based dielectric elastomer with amino-complexed hybrids towards high actuation performance  

作　　者：Zhengxing Dai Qingqing Liu Xiaodong Qi Nan Zhang Ting Huang Jinghui Yang Yong Wang 

机构地区：[1]School of Chemistry,Southwest Jiaotong University,Chengdu,610031,China [2]Key Laboratory of Advanced Technologies of Materials,Ministry of Education of China,Southwest Jiaotong University,Chengdu,610031,China

出　　处：《Nano Materials Science》2024年第5期576-586,共11页纳米材料科学（英文版）

基　　金：supported by Sichuan Science and Technology Program(2022ZHCG0122);the NSAF project(U2230120);Youth Science and Technology Innovation Team of Sichuan Province of Functional Polymer Composites(2021JDTD0009);the Key Researched Development Program of Sichuan Province(2022YFG0271).

摘　　要：For improving the actuation performance at low electric fields of dielectric elastomers,achieving high dielectric constant(εr)and low modulus(Y)simultaneously has been targeted in the past decades,but there are few ways to accomplish both.In contrast to the classical strategies such as incorporating plasticizers or ceramic to prepare the silicon-based dielectric elastomers,here,blending an amino-complexed hybrid(polyethyleneimine(PEI)-Ag)with polydimethylsiloxane(PDMS)elastomer is reported as an alternative strategy to tailor theεr and Y.PEI-Ag not only exhibits excellent dielectric enhancement properties but also minimizes the PDMS crosslinking through amino-complexed reaction between PEI and Pt catalysts.The prepared dielectric elastomers have aεr of 7.2@10^(3)Hz and Y of 1.14 MPa,leading to an actuation strain of 22.27%at 35 V/μm.Hence,incorporating such novel hybrids based on dual amino-complexed effect on both matrix and particles sufficiently promotes the actuated performance of dielectric elastomers.

关 键 词：Flexible composites Dielectric property Electro-mechanical behaviour AGNPS 

分 类 号：TB33[一般工业技术—材料科学与工程]