间苯二酚-甲醛碳气凝胶粉末的性能研究

Characterization of resorcinol-formaldehyde aerogel powder

间苯二酚-甲醛有机气凝胶粉末经过高温碳化处理得到其碳气凝胶粉末。利用全自动吸附仪进行了液氮温度下有机气凝胶粉末和碳气凝胶粉末的N2吸附孔结构表征,主要研究了有机气凝胶碳化前后孔径分布的变化。并采用透射电镜(SEM)和X射线衍射(XRD)对粉末进行分析,结果表明,经碳化后其比表面积有较大的提高(>500m2/g),粉末粒径减小(<100nm)。

Upon pyrolysis of organic aerogel powder at high temperature , the carbonized aerogel can be obtained. The porous properties of organic aerogels powder and carbonized aerogels powder were characterized by low temperature N2 adsorption. The investigation was emphasized on the specific pore size distribution. The powder has been checked with SEM and XRD, the result indicated that the carbonized aerogels powder was remarkably increased（〉500m^2/g）, the powder, s grain size was reduced（〈100nm）.