International Journal of New Developments in Engineering and Society, 2024, 8(1); doi: 10.25236/IJNDES.2024.080111.
Wenyi Liu, Tian He
College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, 266071, China
Dielectric elastomer (DE) is a class of electro-driven flexible smart polymer materials, often using polyacrylate as an elastomer material. Unmodified acrylates typically have a low dielectric constant, resulting in high drive voltages, low breakdown field strengths, and low electrical induced strain. In this study, SiO2 nanoparticles were added to polyacrylate (CN 9021NS) to study the effect of nanoparticles on the dielectric properties of composites, and the frequency dependence of dielectric constant and dielectric loss was analyzedIt is concluded that the addition of SiO2 nanoparticles to polyacrylate can effectively increase the dielectric constant of the composites, but it will also lead to an increase in dielectric loss. When the nano-SiO2 particle content is 10 wt%, although it will lead to an increase in dielectric loss, it has the highest dielectric constant of 8.35, which is 1.165 times that of the elastomer prepared by the original CN 9021NS.
Dielectric Elastomers; Polyacrylates; Nanoparticles; Dielectric Properties
Wenyi Liu, Tian He. Effect of the addition of nano-SiO2 particles with different contents on the dielectric properties of polyacrylate composites. International Journal of New Developments in Engineering and Society (2024) Vol.8, Issue 1: 72-79. https://doi.org/10.25236/IJNDES.2024.080111.
[1] Jiang S, Peng J, Wang L, et al. Recent progress in the development of dielectric elastomer materials and their multilayer actuators [J]. Journal of Zhejiang University-SCIENCE A, 2024, 12(2): 1-23.
[2] Wang K, Kang Y. Titanium dioxide/polyiline doped silicon rubber dielectric elastic system Research [J]. Rubber and plastic technology and equipment, 2016, 42(21): 58-65.
[3] Carpi F, Rossi D D. Improvement of electromechanical actuating performances of a silicone dielectric elastomer by dispersion of titanium dioxide powder [J]. Dielectrics & Electrical Insulation IEEE Transactions on, 2005, 12(4): 835-43.
[4] Krakovský I, Romijn T, Boer A P D. A few remarks on the electrostriction of elastomers [J]. Journal of Applied Physics, 1999, 85(1): 628-9.
[5] Lifshit͡s, E. M. Electrodynamics of continuous media [M]. Electrodynamics of continuous media, 1999.
[6] Lo We C, Zhang X, Kovacs G. Dielectric Elastomers in Actuator Technology [J]. Advanced Engineering Materials, 2005, 7(5): 361-7.
[7] Bai Y, Cheng Z Y, Bharti V. High-dielectric-constant ceramic-powder polymer composites [J]. Applied physics letters, 2000, 2(25): 76.
[8] Panda M, Srinivas V, Thakur A K. Surface and interfacial effect of filler particle on electrical properties of polyvinyledene fluoride/nickel composites [J]. Applied physics letters, 2008, 2(24): 93.
[9] Alabur Manjunath T D, Naraganahalli Karibasappa Supreetha, Mohammed Irfan. Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH4NO3 Solid Polymer Electrolyte Films [J]. Advances in Materials Physics and Chemistry, 2015, 5(8): 34-9.
[10] Vudayagiri S, Zakaria S, Yu L, et al. High breakdown-strength composites from liquid silicone rubbers [J]. Smart Materials and Structures, 2014, 23(10): 5017.
[11] Yang C, Lin Y, Nan C W. Modified carbon nanotube composites with high dielectric constant, low dielectric loss and large energy density [J]. Carbon, 2009, 47(4): 1096-101.
[12] X.S.Zhang, X.Y.Chen. Preparation of BZT 25 Nanopowders and Dielectric Properties of PVDF/BZT 25 Nanocomposites [J]. Experimental science and technology, 2021, 19(1): 334-6.
[13] C.Z.Gao, X.F.Dong, M.Qi. Electric field dependence of dynamic viscoelasticity of TiO _ 2/silicone rubber composite dielectric elastomer [J]. function materials, 2019, 50(7): 21-4.