摘要
用溶胶凝胶法和超临界干燥工艺制备有机气凝胶。经不同碳化温度处理制出具有不同微结构的碳气凝胶用作新型惯性约束聚变靶材料。用差热分析和热失重分析研究碳化过程中有机气凝胶成分变化以优化碳化工艺。 Ｘ 射线衍射分析不同碳化温度对碳气凝胶微结构的影响。结果表明：碳气凝胶颗粒由内部石墨化丝状物相互交联形成；碳化温度和碳化时间对颗粒内结构影响不大。
Resorcinol formaldehyde (RF) aerogel is prepared by using sol gel process and supercritical drying method, and carbonized resorcinol formaldehyde (CRF) aerogel with different microstructure is formed by pyrolyzing the RF aerogel at various temperature. Differential thermal analysis (DTA) and thermogravimetry analysis (TGA) are used to study the change of the ingredient of RF aerogel in order to find the best pyrolisis technique. The influence of the different pyrolisis temperature on the microstructure of CRF aerogel is studied by X ray differaction analysis. The results show that there are graphitic ribbons within the single particle of CRF aerogel, and the pyrolisis temperature and time has no significant influence on the microstructure of CRF aerogel.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1999年第4期305-308,共4页
Atomic Energy Science and Technology
关键词
碳气凝胶
靶材料
碳化处理
微结构
ICF
Carbonized resorcinol formaldehyde aerogel Target material Pyrolisis process Microstructure
