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以草酸氧钛纳米颗粒为分散相,以不同黏度的二甲基硅油(运动学黏度为10cSt、50cSt、100cSt、500cSt和1000cSt)为基液制备电流变液,测试其剪切屈服强度、零场黏度、电流变效率、响应时间及沉降稳定性,研究了基液黏度对草酸氧钛电流变液性能的影响。结果表明,以50cSt二甲基硅油为基液的电流变液具有最佳的电流变效率,以100cSt二甲基硅油为基液的电流变液具有最短的响应时间和较高的沉降稳定性。其机制是,较高的基液黏度可提供较大的黏滞阻力,但易引起颗粒的团聚。
Using titanyl oxalate nanoparticles as disperse phase, the rheological fluid was prepared from dimethyl silicone oil (kinematic viscosity 10cSt, 50cSt, 100cSt, 500cSt and 1000cSt) with different viscosities. The shear yield strength, Viscosity, ER efficiency, response time and settling stability were investigated. The effects of base fluid viscosity on the properties of titanyl oxalate ER fluid were studied. The results show that the electrorheological fluid with 50 cSt dimethylsilicone as the base liquid has the best electrorheological efficiency. The electrorheological fluid with 100 cSt dimethylsilicate as the base fluid has the shortest response time and the higher settling stability. The mechanism is that a higher viscosity of the base fluid can provide greater viscous resistance, but easily lead to particle agglomeration.