锌基复合气凝胶的微观结构

陈擘威; 毕于铁; 罗炫; 张林

doi:10.3788/HPLPB20132508.1984

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锌基复合气凝胶的微观结构

doi: 10.3788/HPLPB20132508.1984

陈擘威^1,2,
毕于铁³,
罗炫¹,
张林^1,3

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;
2.
绵阳师范学院物理与电子工程学院, 四川绵阳 621 000;
3.
西南科技大学-中国工程物理研究院激光聚变研究中心极端条件物质特性联合实验室, 四川绵阳 621 000

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出版历程
- 收稿日期: 2012-10-08
- 修回日期: 2013-03-12
- 刊出日期: 2013-06-19

Microstructure of zinc-based composite aerogels

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

摘要

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。
- 锌基复合气凝胶 /
- 溶胶-凝胶 /
- 微观结构 /
- 聚丙烯酸 /
- 氯化锌
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.
- zinc-based composite aerogel /
- sol-gel /
- microstructure /
- polyacrylic acid /
- zinc chloride