利用水解法与溶液沉积法,合成了丙烯酰胺、十二烷基苯磺酸钠(SDBS)改性氧化钛纳米电流变颗粒.经XRD测定颗粒为无定形态,用TEM观察了粒子的形貌,粒度分析表明颗粒粒径分布为70～300 nm,FTIR图谱显示氧化钛上修饰有丙烯酰胺、SDBS.SDBS的加入影响了颗粒的尺寸、表面性质及颗粒与硅油的润湿性,最终引起电流变液介电性质的改善.丙烯酰胺的加入量也会影响电流变效应.电流变性能测试表明,当SDBS/水质量比为1.875%,丙烯酰胺/水质量比为0.750%时,材料呈现最佳的电流变效应,5 kV/mm直流电场下的静态剪切应力可达90 kPa,电流变液具有极好的抗沉淀稳定性.这种优异的电流变效应源于颗粒界面极化的增强.
参考文献
| [1] | Hao Tian.Electrorheological fluids[J].Adv Mater,2001,13 (24):1847-1857. |
| [2] | Halsay T C,Matin J E.Electrorheological fluids[J].Science,1992,258:761-763. |
| [3] | 田煜,孟永钢,茅海荣,等.电场作用下电流变液的拉伸、压缩和剪切特性分析[J].复合材料学报,2003,20(1):91-95.Tian Yi,Meng Yonggang,Mao Hairong,et al.Elongation compression and shearing characteristics of ER fluids under electric fields[J].Acta Materiae Compositae Sinica,2003,20(1):91-95. |
| [4] | Gamota D,Filisko F E.Dynamical mechanisms studies of electrorheological materials:Moderate frequencies[J].J Rheol,1991,35:399-415. |
| [5] | Wen Weijia,Huang Xianxiang,Yang Shihe,et al.The giant electrorheological effect in suspension of nanoparticles[J].Nat Mater,2003,2(11):727-730. |
| [6] | Tian Yu,Meng Yonggang,Wen Shizhu.Electrorheology of a zeolite/silicone oil suspension under DC fields[J].J Appl Phys,2001,90(1):493-496. |
| [7] | Wang Baoxiang,Zhao Xiaopeng.Sun Ping,Electrorheological behavior of kaolinite-polar liquid intercalation composites[J].J Mater Chem,2002,12(6):1865-1869. |
| [8] | 高子伟,赵晓鹏,孙平,等.β-环糊精聚合物与取代水杨酸、3-羟基-2-萘苯甲酸超分子配合物的构筑及其电流变性能[J].中国科学B辑,2004,34(2):160-167.Gao Ziwei,Zhao Xiaopeng,Sun Ping,et al.Preparation and electrorheological characteristics of β-cyclodextrin-epichlorohydrin starch polymer suspensions[J].Science in China Ser B,2004,34(2):160-167. |
| [9] | Wang Baoxiang,Zhao Xiaopeng.Preparation of kaolinite/titania coated nanocomposite particles and their electrorheological properties[J].J Mater Chem,2003,13(9):2248-2253. |
| [10] | 王宝祥,李佳,赵晓鹏.高岭土/羧甲基淀粉复合颗粒的制备及其协同电流变效应[J].化学学报,2003,61(2):240-244.Wang Baoxiang,Li Jia,Zhao Xiaopeng.Preparation and synergetic electrorheological effects of kaolinite/carboxymethyl starch nanocomposite[J].Acta Chimica Sinica,2003,61(2):240-244. |
| [11] | Zhao Xiaopeng,Yin Jianbo.Preparation and electrorheological characteristics of rare earth doped TiO2 suspensions[J].Chem Mater,2002,14(5):2258-2263. |
| [12] | Wang Baoxiang,Zhao Xiaopeng.Core/shell nanocomposite based on the local polarization and its electrorheological behavior[J].Langmuir,2005,21(14):6553-6559. |
| [13] | 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 polyphenylenediamine/montmorillonite nanocomposite[J].Acta Materiae Compositae Sinica,2004,21(4):8-12. |
| [14] | Filisko F E.Overview of ER technology[A].In:Havelka K O,Filisko F E,ed.Progress of Electrorheology[C].New York:Plenum Press,1995:3-18. |
| [15] | 郑燕青,施尔畏,元如林,等.二氧化钛晶粒的水热制备及其形成机理研究[J].中国科学E辑,1999,29(3):206-210.Zheng Yanqing,Shi Erwei,Yuan Rulin,et al.Hydrothermal preparation and formation mechanism study of TiO2 nanocrystallites[J].Sciencein China Ser E,1999,29(3):206-210. |
| [16] | 黄军华,高濂,陈锦元,等.纳米TiO2粉体制备过程中结晶度的控制[J].无机材料学报,1996,11(1):51-57.Hang Junhua,Gao Lian,Chen Jinyuan,et al.Controlling crystallinity of nano-titania power prepared by the hydrolysis of titanium alkoxide[J].Journal of Inorganic Materials,1996,11(1):51-57. |
| [17] | Yin Jinbo,Zhao Xiaopeng.Preparation and electrorheological activity of mesoporous rare earth doped TiO2[J].Chem Mater,2002,14(11):4633-4640. |
| [18] | Davis L C.Polarization forces and conductivity effects in ER fluids[J].J Appl Phys,1992,72(4):1334-1349. |
| [19] | Boissy C,Wu Chengwei,Fahmy Y,et al.Experimental study of the yield stress of electrorheological suspensions under AC fields:Comparison with theoretical model[J].International Journal of Physics B,1999(13/15):1775-1783. |
| [20] | Wang Baoxiang,Zhao Xiaopeng.A bionic nano-papilla particle and its super-oleophilic ability[J].Adv Funct Mater,2005,15(11):1815-1820. |
| [21] | Joselevich E,Willner I.Photosensitization of quantum-size TiO2 particles in water-in-oil microemulsion[J].J Phys Chem,1994,98:7628-7635. |
| [22] | Shedid A S,Mamdouh T G.Factors affecting contact-angle measurement of reservoir rocks[J].Journal of Petroleum Science and Engineering,2004,44(3/4):193-203. |
| [23] | Block H,Rattay P.Recent developments of ER fluids[A].In:Havelka K O,Filisko F E,ed.Progress in Electrorheology[C].New York:Plenum Press,1995:19-42. |
| [24] | Ma Hongru,Wen Weijia,Wing Y T,et al.Frequency dependent electrorheological properties:Origin and bounds[J].Phys Rev Lett,1996,77(12):2499-2502. |
| [25] | Wu Chengwei,Conrad H.Influence of mixed particle size on electrorheological response[J].J Appl Phys,1998,83 (7):3880-3884. |
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%