聚甲基丙烯酸甲酯-羰基铁复合粒子的制备及其表征  

Preparation of PMMA-CI Composite Particles and Their Characterization

作　　者：陈淑莲[1] 胡庆林[1] 晏华[1] 张斌[1] 廖梓珺[1] 

机构地区：[1]中国人民解放军后勤工程学院军事油料应用与管理工程系,重庆400016

出　　处：《材料导报（网络版）》2006年第5期49-51,共3页Materials Review

摘　　要：采用原位分散聚合法制备聚甲基丙烯酸甲酯-羰基铁复合粒子，研究了复合粒子粒径、形貌、磁流变液的沉降稳定性和流变学性能。结果表明，复合粒子呈近似球形，平均粒径为9μm，密度为1.49g/mL；核壳比为3：2，正常工作温度范围内，复合粒子具有热稳定性；复合粒子磁流变液的沉降稳定性得到了改善；流变学性能有一定的下降。PMMA （poly methyl methacrylate）-CI （carbonyl iron） composite particles are prepared by in-situ dispersion polymerization method. In this paper, the size and shape of the particle, and the properties of sedimentation stability and rheology of the magnetorheological fluid have been studied. The composite particles are approximate sphericity, the average diameter is 9μm, the density is 1.49 g/mL. The ratio of the shell to core is 3：2, and the normal working temperature will not influence the thermal stability of the composite particles .The composite particles have better sedimentation stability, but their rheological property is reduced.

关 键 词：甲基丙烯酸甲酯 羰基铁 磁流变液 沉降稳定性 流变学性能 

分 类 号：TB34[一般工业技术—材料科学与工程]