插层高岭土/改性氧化钛纳米复合颗粒及其电流变性能  

Intercalated kaolinite/modified titanium oxide nanocomposites and its high electrorheological activity

作　　者：赵艳[1] 王宝祥[1] 赵晓鹏[1] 

机构地区：[1]西北工业大学电流变技术研究所,陕西西安710072

出　　处：《功能材料》2006年第5期684-686,689,共4页Journal of Functional Materials

基　　金：国家杰出青年科学基金资助项目(50025207);国家自然科学基金资助项目(50272054)

摘　　要：采用插层法制备出甲酰胺插层高岭土,然后通过液相沉积法制备了插层高岭土/改性氧化钛纳米复合颗粒。XRD、FT-IR测试结果表明极性物质甲酰胺很好的插入层状黏土高岭土中,且插层率受反应时间影响显著。SEM照片证实了改性氧化钛包覆于高岭土上。该纳米复合颗粒所配电流变液具有较好的电流变效应,电流变效应受钛酸丁酯用量显著改变。通过介电性能解释了电流变液性能优良的原因,为制备高性能电流变液提供理论依据。Intercalated kaolinite/modified titanium oxide nanocomposites were synthesized using intercalation and liquid deposition method. XRD, FT-IR results show that formamide was intercalated into the interlayer of kaolinite and the intercalated ratio can be affected by the reaction time. The SEM images validate that modified titanium oxide was deposited on the surface of kaolinite. The Intercalated kaollnite/modified titanium oxide nanor composite ERF have excellent electrorheological effect. The dosage of tetrabutyl titanate can influent the dielectrical property of particulate, then the optimal electrorheological property could be obtained.

关 键 词：插层 纳微结构 电流变液 高岭土 

分 类 号：TB383[一般工业技术—材料科学与工程] O646[理学—物理化学]