摘要
研究聚硅氧烷侧链高分子液晶配制成电流变液体的电流变效应 ,以获得高性能的电流变液体 ,应用德国RV2 0电流变仪测试性能。结果表明 ,该电流变液体 5 2℃ ,电场强度由零增至DC 2 0 0 0V/mm ,剪切速率为 30 0s-1时 ,剪切应力由 2 0 0Pa增至 5 4 0 0Pa ,表观黏度由 2 0 0mPa·s增至 10 0 0 0mPa·s;剪切速率为 4 0 0s-1时 ,剪切应力由 2 0 0Pa增至 6 30 0Pa,表观黏度由 2 0 0 0mPa·s增至 76 0 0mPa·s ;剪切速率为 5 0 0s-1时 ,剪切应力由 2 75Pa增至 6 80 0Pa,表观黏度由5 0 0mPa·s增至 90 0 0mPa·s。 77℃时 ,同样条件下 ,剪切速率为 5 0 0s-1时 ,剪切应力达 80 0 0Pa,具有更高的剪切应力 ,说明温度适应性较强。
The electrorheological(ER) effect of ER fluid using side chain polysiloxane liquid crystal as dispersed phase was studied. The rheological properties were investigated with Germanic RV20 rheometer. At 52 ℃,as the electric field strength increased from 0 to DC2000 V/mm,the shear stress increased from 200 Pa to 5400 Pa and the viscosity increased from 2000 mPa·s to 10000 mPa·s at shear rate of 300 s -1 ;the shear stress increased from 200 Pa to 6300 Pa and the viscosity increased from 200 mPa·s to 7600 mPa·s at shear rate of 400 s -1 ;the shear stress increased from 275 Pa to 6800 Pa and the viscosity increased from 500 mPa·s to 9000 mPa·s at shear rate of 500 s -1 .At 77 ℃and shear rate of 500s -1 ,the shear stress reached 8000Pa,indicating that the fluid can be used in wide temperature range.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2002年第2期90-92,共3页
Fine Chemicals
关键词
电流变流体
ERF
聚硅氧烷
侧链高分子液晶
电流变效应
electrorheological fluid
polysiloxane
side chain polymer liquid crystal
electrorheological effect
