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- 2016
Gd2O3空心微球的制备及Gd2O3/丁基橡胶复合材料低频阻尼性能
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Abstract:
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)CO3复合微球,高温煅烧后得到Gd2O3空心微球,将其与丁基橡胶复合制备低频高阻尼Gd2O3/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Gd2O3空心微球的形貌与结构组成进行表征。将Gd2O3空心微球与粉体分别作为填料加入丁基橡胶中制备Gd2O3/丁基橡胶复合材料。结果表明:Gd2O3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,Gd2O3/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 precipitation technique. The Gd2O3 hollow microspheres were obtained after the polymer microsphere templates were removed 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 employed to characterize the structure and morphology of the Gd2O3 hollow microspheres. Gd2O3/butyl rubber composites were prepared by adding Gd2O3 hollow microspheres and powder as fillers to the butyl rubber separately. The results show that Gd2O3 hollow microspheres were composed of cubic fluorite structure with 0.9 μm outer diameter and about 100 nm shell thickness. The damping properties of composite with Gd2O3 hollow microspheres are better than that with Gd2O3 powder. Low frequency damping property of Gd2O3/butyl rubber composite has improved significantly compared with that of pure butyl rubber. 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)
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