Study on viscoelastic property of nanometer SiO2 doped rare earth carboxylate grafting poly-silicone liquid ERF
writer：Dai Shaojun，Zhang Ming，Pan Shenglin，Xiao Chunyan，Yan Changhao，Gao Po，Inoue Shinichi，Qiu Guanming
keywords：ELECTRORHEOLOGICAL， fluid ，viscoelastic properties， forced， Oscillating behavior， Creep and Recovery， RARE earths
source：期刊
specific source：Journal of Rare Earths
Issue time：2007年
Nano-SiO2 doped with rare earth carboxylate grafting continuous component of functional poly-silicone liquid, a kind of subsidence high-resistance. Electrorheological fluid （ERF） was synthesized. And its viscoelastic properties were investigated experimentally. The special polarization effect of rare earth in the ERF was also discussed. The forced oscillating behavior was obtained using a rheometer. The variation of the shear modulus of ERF subjected to various stress amplitude and frequency were investigated. The complex shear modulus and storage modulus of ERF were also given at different electric field intensities. Meanwhile, the creep and recovery characteristics of ERF were also measured. The equilibrium compliance Jc and the steady state recoverable compliance JR were investigated as a function of electric field strength and ratio of reactant, and the effect of ERF′s structure was analyzed. With increasing in electric field strength at fixed ratio of reactant, the plastic response diminishes, and the elastic behavior rose.