Effect of surfactant on the dielectric and electrorheological properties of zinc borate/silicone oil dispersions  

作　　者：Omer Yunus Gumus Halil Ibrahim Unal 

机构地区：[1]Bursa Technical University,Engineering and Natural Sciences Faculty,Fiber and Polymer Engineering Department,Bursa 16310,Turkey [2]Gazi University,Science Faculty,Chemistry Department,Smart Materials Research Lab.Ankara 06500,Turkey

出　　处：《International Journal of Minerals,Metallurgy and Materials》2019年第12期1523-1530,共8页矿物冶金与材料学报（英文版）

基　　金：Turkish Scientific and Technological Research Council for the financial support of this work (Project No: 112T811)

摘　　要：Zinc borate(ZB)particles dispersed in silicone oil(SO)at concentrations of φ=5vol%-20vol% were subjected to dielectric analysis to elucidate their polarization strength,time,and mechanism.Results revealed that all virgin dispersions lacked polarization.Triton X-100,a non-ionic surfactant,was added to ZB/SO dispersions to enhance the polarizability of ZB particles.The addition of 1vol% Triton X-100 enhanced the polarizability of ZB/SO dispersions,and the 15vol% ZB/SO system provided the highest dielectric difference Δε′(the difference in ε′values at zero and infinite frequency,Δε′=ε0–ε∝)of 3.64.The electrorheological(ER)activities of the ZB/SO/Triton-X dispersion system were determined through the ER response test,and viscoelastic behaviors were investigated via oscillation tests.A recoverable deformation of 36% under an applied electrical field strength of 1.5 kV/mm was detected through creep and creep recovery tests.Zinc borate（ZB） particles dispersed in silicone oil（SO） at concentrations of j = 5 vol%–20 vol% were subjected to dielectric analysis to elucidate their polarization strength, time, and mechanism. Results revealed that all virgin dispersions lacked polarization. Triton X-100, a non-ionic surfactant, was added to ZB/SO dispersions to enhance the polarizability of ZB particles. The addition of 1 vol% Triton X-100 enhanced the polarizability of ZB/SO dispersions, and the 15 vol%ZB/SO system provided the highest dielectric difference Δε′（the difference in ε′ values at zero and infinite frequency, Δε′ = ε0 – εμ） of 3.64. The electrorheological（ER） activities of the ZB/SO/Triton-X dispersion system were determined through the ER response test, and viscoelastic behaviors were investigated via oscillation tests. A recoverable deformation of 36% under an applied electrical field strength of 1.5 kV/mm was detected through creep and creep recovery tests.

关 键 词：zinc BORATE ELECTRORHEOLOGICAL FLUIDS DIELECTRIC analysis SURFACTANT 

分 类 号：TG1[金属学及工艺—金属学]