Gd_2O_3空心微球的制备及Gd_2O_3/丁基橡胶复合材料低频阻尼性能  

Preparation of Gd_2O_3 hollow microspheres and low frequency damping properties of Gd_2O_3/butyl rubber composite

作　　者：张玉红[1] 江学良[2] 孙刚[2] 王维[2] 张姣[2] 

机构地区：[1]有机化工新材料湖北省协同创新中心有机功能分子合成与应用教育部重点实验室湖北大学化学化工学院,武汉430062 [2]武汉工程大学材料科学与工程学院,武汉430074

出　　处：《复合材料学报》2016年第1期84-91,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51273154);武汉工程大学研究生教育创新基金(CX2013064)

摘　　要：以分散聚合法制备的聚苯乙烯(PS)微球作为模板,通过均相沉淀法制备前驱体PS-Gd(OH)CO_3复合微球,高温煅烧后得到Gd_2O_3空心微球,将其与丁基橡胶复合制备低频高阻尼Gd_2O_3/丁基橡胶复合材料。采用FTIR、SEM、TEM分析、TG分析仪、XRD分析和XPS对Gd_2O_3空心微球的形貌与结构组成进行表征。将Gd_2O_3空心微球与粉体分别作为填料加入丁基橡胶中制备Gd_2O_3/丁基橡胶复合材料。结果表明:Gd_2O_3空心微球由立方萤石结构的颗粒组成,外空心直径为0.9μm,壳层厚度约为100nm;添加空心微球的复合材料阻尼性能较好;与纯丁基橡胶相比,Gd_2O_3/丁基橡胶复合材料的低频阻尼性能明显提高。The polystyrene （PS） microspheres which were prepared by dispersion polymerization method were served as a template, the precursor PS-Gd（OH）CO3 composite microspheres were prepared by homogeneous precipi- tation technique. The Gd2O3 hollow microspheres were obtained after the polymer microsphere templates were re- moved through calcinations. Low frequency and high damping Gd2O3/butyl rubber composites were prepared by blending Gd2O3 hollow microspheres with butyl rubber. FTIR, SEM, TEM, TG analysis, XRD and XPS were em- ployed to characterize the structure and morphology of the Gd2O3 hollow microspheres. Gd2O3/butyl rubber com- posites were prepared by adding Gd2O3 hollow microspheres and powder as fillers to the butyl rubber separately. The results show that Gd2 O3 hollow microspheres were composed of cubic fluorite structure with 0.9 μm outer di- ameter and about 100 nm shell thickness. The damping properties of composite with Gd2O3 hollow microspheres are better than that with Gd2O3powder. Low frequency damping property of Gd2O3/butyl rubber composite has im- proved significantly compared with that of pure butyl rubber.

关 键 词：聚苯乙烯 模板 GD2O3 空心微球 低频阻尼性能 

分 类 号：TQ333[化学工程—橡胶工业]