MF气凝胶的制备和结构表征
Synthesis and characterization of MF aerogels
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摘要: 以三聚氰胺(M)和甲醛(F)为原料,经溶胶-凝胶和超临界干燥工艺制备出密度156.82 mg/cm3的MF气凝胶。通过X射线衍射仪(XRD)、扫描电镜(SEM)、透射电镜(TEM)及比表面测定仪(BET)等测试手段研究了其结构和性能。XRD结果表明MF气凝胶是一种非晶材料;TEM和SEM结果表明MF气凝胶所有孔孔径均在10 nm左右;孔径分布及比表面积测试仪测得该气凝胶具有很高的比表面积(1 015.98 m2/g),孔径大小主要为5~30 nm。所得MF气凝胶是一种具有nm量级3维网络结构的轻质多孔材料,有望在ICF实验靶中得到应用。Abstract: MF aerogels were prepared from Melamine(P) and Formaldehyde(F) by sol-gel and supercritical drying process. The structure and function of the MF aerogels were characterized by means of SEM, TEM, BET and XRD, and the results indicate that the MF aerogels are an amorphous material with large specific surface area (1 015.98 m2/g) and small pore diameter(5~30 nm), have continuous nano-network and porous structure and it is hopeful for application in ICF experiments.
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Key words:
- melamine /
- formaldehyde /
- mf aerogels /
- preparation /
- characterization
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