物理化学学报 >> 2001, Vol. 17 >> Issue (06): 496-500.doi: 10.3866/PKU.WHXB20010605

研究论文 上一篇    下一篇

金属核心/高聚物膜复合悬浮相电流变流体材料

丁文;范志康;徐传骧;卢凤纪   

  1. 西安交通大学化工学院,西安 710049;西安理工大学材料学院,西安 710048;西安交通大学电气绝缘研究所,西安 710049
  • 收稿日期:2000-11-02 修回日期:2001-01-28 发布日期:2001-06-15
  • 通讯作者: 丁文 E-mail:wen_ding@263.net

Metal Core/Polymer Coating Compounded Suspension for Electrorheologic Fluid

Ding Wen;Fan Zhi-Kang;Xu Chuan-Xiang;Lu Feng-Ji   

  1. School of Chemical Engineering, Xi′an Jiaotong University, Xi′an 710049; School of Material Engineering, Xi′an Institute of Technology, Xi′an 710048; Institute of Dielectric, Xi′an Jiaotong University, Xi′an 710049
  • Received:2000-11-02 Revised:2001-01-28 Published:2001-06-15
  • Contact: Ding Wen E-mail:wen_ding@263.net

摘要: 针对电流变流体悬浮相材料的开发与研究,根据介质极化原理,设计开发了金属核心/高聚物膜复合悬浮相电流变流体材料,在乳液聚合与微胶囊包覆技术的基础上,制备出了金属核心/高聚物膜复合颗粒.并对这种金属核心/高聚物膜复合颗粒的电流变流体性能进行了测试与研究.从理论和实验上都说明了金属核心/高聚物膜复合悬浮相材料在改善电流变流体力学性能及稳定性方面具有潜力,是可以进一步提高与改进的电流变流体材料.

关键词: 电流变流体, 抗剪切强度, 包覆, 复合悬浮相, 乳液聚合

Abstract: Aiming at researching and developing new compounded suspensions to sever as electrorheological fluid (ERF), a metal core/polymer coating compounded suspension for ERF has been designed according to the principle of media polarization. Based on this evolution,a series of metal core/high polymer coating compounded particles such as Zn/polystyrenebutylacrylate compounded particles, Ni/polystyrenebutyl acrylate compounded particles, Ni/polystyrene compounded particles, Zn/polystyrene compounded particles have been prepared adopting the emulsion polymerization together with the microencapsulation techniques as well as the acidalkali matching theory which was initially suggested by Fowkes(schematically depicted in Fig.1). The micromorphologies of these compounded particles were measured using scan electron microscophy(the SEM photography of Fig.2 exhibits the coated condition of these particles) and the ERF performance of these compounded particles have alse been carried out. The performance test results indicate that the mechanical properties (refer to Fig.5~10 ) and the stability of ERF were improved, i.e. shear strength was no less than 2 kPa and segregation resistance was intensified signi ficantly compared with that of metal core, which shows that these materials are promising for acting as ERF though further modification should be necessary. Besides, from the performance test results it is apparently found that different compounded suspensions made up of different metal cores or polymer coatings possess various mechanical properties,and explanations for this phenomenon will discussed in detail elsewhere.

Key words: Electrorheological fluid, Shearing strength, Coating, Compounded s uspension, Emulsion polymerization