采用水热合成法制备稀土掺杂金红石型纳米二氧化钛,并通过XRD,TEM等对其进行了表征.结果表明,稀土离子的掺杂使得二氧化钛(110)晶面衍射峰位置发生了漂移,并且出现了不同程度的宽化,但并没有改变纳米TiO2的晶型,也没有出现稀土氧化物的特征衍射峰.稀土掺杂后的二氧化钛形貌为棒状,长径比约为110 nm:20 nm.利用硅烷偶联剂KH-570对稀土掺杂纳米TiO2表面修饰,与乙烯硅油发生接枝反应制备新型电流变液,并通过旋转流变仪测试了该电流变液的稳态电流变性能.通过红外吸收光谱发现,乙烯基硅油与KH-570-TiO2发生了一定程度的接枝共聚反应.由于无机纳米粒子与聚硅氧烷连续相形成化学键体系,电流变液的抗沉降稳定性得到了很大的提高；稀土离子的掺杂增大了体系的极性,随着电场强度的增大,电流变液的线性平台区也随之变长,表现出典型的类固态响应行为,其中以Sm3+的掺杂效果最为显著.
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