Abstract: Four different concentration TiO2-H2O nanofluids with 20 nm TiO2 were prepared with supersonic oscillator through appending hydrophilic dispersant into deionized water. The viscosities of TiO2-H2O nanofluids and deionized water were measured at different temperatures. The results showed that the viscosities of nanofluids increased apparently compared to the deionized water. And the viscosities varied inversely with the temperature of the TiO2-H2O mixture system. The results also demonstrated that the TiO2-H2O nanofluids were Newtonian fluids.

摘要： 在去离子水中添加亲水性分散剂，经过超声振动制备了粒径为20 nm的4种不同体积分数的TiO2-H2O纳米流体。对纳米流体和水进行黏度测试，结果表明纳米流体的黏度值均大于水，且黏度随TiO2粒子体积分数的增加呈加速上升的趋势，随温度呈反比变化。体积分数越高的纳米流体，在较低温度下的黏度增加幅度比高温时大。流变曲线表明，在所配制的体积分数内，TiO2-H2O纳米流体的黏度不随剪切速率的变化而变化，为典型的牛顿型流体。