摘要
过渡金属基气凝胶是惯性约束聚变实验中靶的候选材料。以无机铜盐CuCl2的醇溶液为前驱体，采用聚丙烯酸为分散剂，环氧丙烷为凝胶促进剂，通过溶胶-凝胶工艺制备了柱状铜基醇凝胶。铜基醇凝胶经CO2超临界流体干燥后即可得到浅绿色柱状铜基气凝胶靶材料，材料密度为120～150mg／cm3。由扫描电子显微镜对气凝胶的微结构分析可知，该样品呈现由纳米级球形颗粒均匀堆积而成的网络结构。红外光谱、X射线衍射图谱和X射线荧光光谱的结果表明，样品结晶部分的成分主要为斜方晶Cu2^2＋Cl（OH）3，而无定形部分的成分为水合氢氧化铜。
The transition metal based aerogels are available for target materials of ICF. The monolithic copper oxide aerogels were prepared from copper chloride, propylene oxide and polyacrylic acid. Firstly, by using of cupric chloride solution as precursor, polyacrylic acid as dispersant and propylene oxide as accelerator, and selecting suitable mould, the columnar copper-based aleogel was made under the sol-gel process. And the proper ratio of reactants was got via the experiment. Then the columnar light-green monolithic aerogel sample was obtained by the process of aging and supercritieal drying. SEM studies indicate that the sample has a network porous structure composed of uniform nano-scale spherical particles. In term of IR, XRD and XRF, it indicates that the crystal part of the aerogel is mostly orthorhombie copper chloride hydroxide and the amorphous part is aquo cupric hydroxide.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2008年第9期794-798,共5页
Atomic Energy Science and Technology
基金
国家“863”计划资助项目(2007AA804137)
教育部军品配套项目
上海科技启明星计划项目(05QMX1454)
上海市科委纳米技术专项项目(0652nm044)
上海市科委科技攻关计划项目(055211010)
关键词
铜基
气凝胶
环氧丙烷
聚丙烯酸
copper-based
aerogel
propylnen oxide
polyaerylic acid
