| SiO2空心微球的制备与表征 |
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| 引用本文： | 王吉会,董青. SiO2空心微球的制备与表征[J]. 材料开发与应用, 2009, 24(4): 42-47 |
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| 作者姓名： | 王吉会 董青 |
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| 作者单位： | 天津大学材料科学与工程学院,天津,300072 |
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| 基金项目： | 天津市应用基础研究计划面上基金项目 |
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| 摘 要： | 以自制的微米级碳酸钙颗粒为模板,正硅酸乙酯为硅源,通过溶胶-凝胶方法合成出CaCO3/SiO2核壳结构;随后通过高温煅烧、酸浸和干燥处理,制备出圆形度高、分散性好、结构完整的微米级SiO2空心球。并利用SEM、XRD、FTIR、TG和压缩实验等方法对空心微球的形貌、结构和抗压强度进行了分析和测定。SiO2空心微球的粒径为2-5μm,壳层厚度为0.42-0.85μm,比表面积为554.01m^2/g,最可几孔径为1.7nm,抗压强度在20~30MPa之间。
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| 关 键 词： | SiO2空心微球 碳酸钙模板 合成 表征 抗压强度 |
Synthesis and Characterization of Hollow Silica Microspheres |
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| WANG Ji-hui,DONG Qing. Synthesis and Characterization of Hollow Silica Microspheres[J]. Development and Application of Materials, 2009, 24(4): 42-47 |
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| Authors: | WANG Ji-hui DONG Qing |
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| Affiliation: | WANG Ji-hui,DONG Qing (School of Materials Science , Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | CaCO3/SiO2 core-shell structure was prepared by sol-gel route and using calcium carbonate microparticles as core templates and TEOS as silica source,and then the hollow silica microspheres were synthesized after calcination,dissolution and washing process.The surface morphology,structure and compressive strength of hollow silica microspheres were examined and determined by using SEM,XRD,FTIR,TG and compression tester.The results show that the as-synthesized hollow silica microspheres are uniform spherical p... |
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| Keywords: | Hollow silica microsphere CaCO3 template Synthesis Characterization Compressive strength |
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