用沉淀法制备了苯胺-草酸氧钛锶(SrTi(C2O4)2)颗粒.FTIR分析表明,苯胺已引入到SrTi(C2O4)2颗粒的表面;XRD分析表明,苯胺-SrTi(C2O4)2颗粒为含少量结晶的无定形态.采用SEM观察颗粒的形貌,结果表明,随反应体系中苯胺与钛原子物质的量比naniline/nTi的增大,苯胺-SrTi(C2O4)2颗粒由近似球状(naniline/nTi=0)变为多面体状(naniline/nTi=2),而后变为棒状与团簇状颗粒的混合体系(naniline/nTi=3).以苯胺-SrTi(C2O4)2颗粒为分散相制备颗粒质量分数为66.7％电流变液,电流变性能测试结果表明,在naniline/nTi=2时,电流变液具有较高的剪切应力和剪切屈服强度、较大的漏电流密度.苯胺在颗粒制备过程中起控制颗粒形貌的作用,在电流变液体系中起极性分子的作用,其对苯胺-SrTi(C2O4)2电流变液性能的影响是两种效应综合作用的结果.
参考文献
| [1] | Winslow W M.Induced fibration of suspensions[J].Journal of Applied Physics,1949,20(12):1137-1140. |
| [2] | Wang B X,Zhao X P.Preparation of kaolinite/titania coated nanocomposite particles and their electrorheological properties[J].Journal of Material Chemistry,2003,13(9):2248-2253. |
| [3] | 陆军,赵晓鹏.聚邻苯二胺/蒙脱土纳米复合材料的合成及其电流变效应[J].复合材料学报,2004,21(4):8-12.Lu Jun,Zhao Xiaopeng.Electrorheological behavior of polyo-phenylenediamine/montmorillonite nanocomposite[J].Acta Materiae Compositae Sinica,2004,21(4):8-12. |
| [4] | Wen W J,Huang X X,Yang S H,et al.The giant electrorheological effect in suspensions of nanoparticles[J].Nature Materials,2003,2:727-730. |
| [5] | WeiJ H,ZhaoL H,PengSL,et al.Wettabilityof ureadoped TiO2 nanoparticles and their high electrorheological effects[J].Journal of Sol-Gel Science and Technology,2008,47(3):311-315. |
| [6] | Cao J G,Shen M,Zhou L W.Preparation and electrorheological properties of triethanolamine-modified TiO2[J].Journal of Solid State Chemistry,2006,179(5):1565-1568. |
| [7] | Cheng Y C,Guo J J,Xu G J,et al.Electrorheological property and microstructure of acetamide-modified TiO2 nanoparticles[J].Colloid Polym Sci,2008,286 (13):1493-1497. |
| [8] | Liu F H,Xu G J,Wu J H,et al.Synthesis and electrorheological properties of oxalate group-modified amorphous titanium oxide nanoparticles[J].Colloid Polym Sci,2010,288(18):1739-1744. |
| [9] | 赵艳,王宝祥,赵晓鹏.改性纳米氧化钛电流变液的制备及其特性[J].复合材料学报,2006,23(3):96-102.Zhao Yah,Wang Baoxiang,Zhao Xiaopeng.Synthesis and electrorheological properties of modified TiO2 nanoparticles[J].Acta Materiae Compositae Sinica,2006,23(3):96-102. |
| [10] | Qiao Y P,Yin J B,Zhao X P.Oleophilicity and the strong electrorheological effect of surface-modified titanium oxide nano-particles[J].Smart Materials and Structures,2007,16(2):332-339. |
| [11] | Cao J G,Shen M,Zhou L W.Preparation and electrorheological properties of triethanolamine-modified TiO2[J].Journal of Solid State Chemistry,2006,179(5):1565-1568. |
| [12] | Fan W,Niinist(o) L.Preparation of strontium titanate using strontium titanyl oxalate as precursor[J].Materials Research Bulletin,1994,29(4):451-458. |
| [13] | Gallagher P K,Thomson J.Thermal analysis of some barium and strontium titanyl oxalates[J].Journal of the American Ceramic Society,1965,48(12):644-647. |
| [14] | Wang X Z,Shen R,Wen W J,et al.High performance calcium titanate nanoparticle ER fluids[J].International Journal of Modern Physics B,2005,19(7-9):1110-1113. |
| [15] | WuJ H,XuGJ,Cheng Y C,et al.The influence of high dielectric constant core on the activity of core-shell structure electrorheological fluid[J].Journal of Colloid and Interface Science,2012,378(1):36-43. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%