| 锌基复合气凝胶的微观结构 |
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| 引用本文： | 陈擘威,毕于铁,罗炫,张林.锌基复合气凝胶的微观结构[J].强激光与粒子束,2013,25(8):1984-1988. |
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| 作者姓名： | 陈擘威 毕于铁 罗炫 张林 |
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| 作者单位： | 1.中国工程物理研究院 激光聚变研究中心, 等离子体物理重点实验室, 四川 绵阳 621 900; |
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| 摘 要： | 以ZnCl2为前躯物，不同相对分子质量的聚丙烯酸为模版剂，环氧丙烷作为催化剂，超临界干燥成功制得了锌基复合气凝胶。运用场发射扫描电镜、高分辨透射电子显微镜和N2等温吸附测试对气凝胶的微观结构进行了表征。结果表明，制备的锌基复合气凝胶呈现三维网络状结构，其三维结构是由大量微小颗粒组成，颗粒的粒径为nm量级，为介孔材料。选用相对分子质量为1800的聚丙烯酸作为模版剂制备的气凝胶的微观结构最好，无明显的塌陷和团聚现象，其比表面积为236 m2/g，平均孔径分布在11 nm左右，总的孔体积为0.179 cm3/g。
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| 关 键 词： | 锌基复合气凝胶 溶胶-凝胶 微观结构 聚丙烯酸 氯化锌 |
| 收稿时间： | 2012-10-08; |
Microstructure of zinc-based composite aerogels |
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| Chen Bowei,Bi Yutie,Luo Xuan,Zhang Lin.Microstructure of zinc-based composite aerogels[J].High Power Laser and Particle Beams,2013,25(8):1984-1988. |
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| Authors: | Chen Bowei Bi Yutie Luo Xuan Zhang Lin |
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| Affiliation: | 1.Science and Technology on Plasma Physics Laboratory,Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China;2.School of Physics and Elcetronic Engineering,Mianyang Normal University,Mianyang 621000,China;3.Joint Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology and Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621000,China |
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| Abstract: | The zinc-based composite aerogel was prepared by the sol-gel method using ZnCl2 as precursor, polyacrylic acid (800, 1800, 5000) as template, and propylene oxide as initiator. The characterization of aerogels was carried out by field-emission scanning electron microscope (FESEM), high-resolution transmission electron microscopy (HRTEM), and N2 adsorption/desorption. The results suggested that the zinc-based composite aerogel made by polyacrylic acid (1800) had perfectly three-dimensional networks and the skeletal was composed of particles in nanometer and had a high surface area about 236 m2/g. The N2 adsorption/desorption showed the aerogel had an average pore-diameter of 11 nm and a total pore volume of 0.179 cm3/g. |
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| Keywords: | sol-gel microstructure polyacrylic acid zinc chloride |
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