The Synthesis and Electrorheological Properties of BaTiO_3-coated PMMA Microspheres  

作　　者：彭随丽 

机构地区：[1]Department of Physics, Wuhan University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2007年第1期85-87,共3页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China (Nos. 10418014 and 10474074).

摘　　要：Coated-PMMA microspheres consisting of poly （methyl methacrylate）（PMMA） core and barium titanate （BaTiO3） shell were synthesized by the modified sol-gel processing and then adopted as an electrorheological （ER） materials. The structure and morphology of coated powders were chyfecterized by SEM and FT-IR; the shear stress of the suspensions of coated-PMMA particles and pure PMMA particles in silicone oil with a 20 vol% were investigated. The results show that the BaTiO3 coated PMMA microspheres based suspension in silicone oil exhibited typical ER behavior and stronger ER effects.Coated-PMMA microspheres consisting of poly （methyl methacrylate）（PMMA） core and barium titanate （BaTiO3） shell were synthesized by the modified sol-gel processing and then adopted as an electrorheological （ER） materials. The structure and morphology of coated powders were chyfecterized by SEM and FT-IR; the shear stress of the suspensions of coated-PMMA particles and pure PMMA particles in silicone oil with a 20 vol% were investigated. The results show that the BaTiO3 coated PMMA microspheres based suspension in silicone oil exhibited typical ER behavior and stronger ER effects.

关 键 词：surface coating PMMA BATIO3 electrorheological （ER） effects 

分 类 号：TG113[金属学及工艺—物理冶金]