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以聚萘醌为分散相 ,对溴二苯甲烷和二甲基硅油为分散介质 ,聚硅氧烷侧链高分子液晶为添加剂 ,配制成电流变液体 (ER液体 ) ,应用德国RV2 0电流变仪测试性能 ,研究其ER效应 ,以求获得高性能的ER液体。结果表明 ,该ER液体有很强的ER效应。 77℃ ,电场强度 (E)由 0增至DC2 0 0 0V/nm ,剪切速率为 30 0s- 1时 ,剪切应力由 30Pa增至 90 0 0Pa ,表观粘度由 4 0mPa·s增至 30 0 0 0mPa·s ;剪切速率为 5 0 0s- 1时 ,剪切应力由 30Pa增至 15 0 0 0Pa ,表观粘度由 4 0mPa·s增至2 35 0 0mPa·s。 4 4℃ ,同样条件下 ,剪切速率为 6 0s- 1时 ,剪切应力由 2Pa增至 2 4 0 0 0Pa ,表观粘度由 4 5mPa·s增至 2 2 0 0 0mPa·s
Poly (naphthoquinone) as disperse phase, brominated diphenylmethane and dimethylsilicone as dispersion medium, polysiloxane side chain polymer liquid crystal as additives, formulated into ER fluid (ER liquid), the application of the German RV20 electrorheological Instrument test performance, study its ER effect, in order to obtain high performance ER liquid. The results show that the ER liquid has a strong ER effect. The shear stress increased from 30 Pa to 90 0 Pa and the apparent viscosity increased from 40 mPa · s to 77 200 ℃ when the electric field strength (E) increased from 0 to DC2 0 0 0V / nm and the shear rate was 30 0s-1 30 0 0 mPa · s. When the shear rate is 500 s-1, the shear stress increases from 30 to 15 0 0 Pa, and the apparent viscosity increases from 40 mPa · s to 2350 mPa · s. 4 4 ℃. Under the same conditions, the shear stress increased from 2Pa to 240 ℃ and the apparent viscosity increased from 45mPa · s to 2200mPa · s