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对苯二酚-甲醛有机气凝胶的结构测试及性能研究
Research into structual characteristic and properties of HF organic aerogels
【摘要】 首次用溶胶-凝胶法和CO2超临界干燥技术制备了对苯二酚-甲醛有机气凝胶,并经高温碳化处理得到其碳气凝胶,测得气凝胶的比表面积由碳化前的375.28 M2/G增大到碳化后的468.66 M2/G,碳气凝胶的孔径集中分布在15NM以内。观察到其表观形貌,以及碳气凝胶中存在微晶结构。研究了不同反应物配比对凝胶性能的影响,并发现碳气凝胶具有良好导电性。
【Abstract】 For the first time,hydroquinone-formaldehyde aerogels have been prepared by sol-gel method and CO2 supercritical drying,and after high temperature carbonization the carbonized carbon aerogels are obtained.The specific surface areas of the gels increases from 375.28 m2/g to 468.66 m2/g after carbonized and its pore diameter is mostly smaller than(15 nm).Its surface appearance is observed.And there are crystallites lying in carbon aerogels.The influence of reactants proportion on properties is studied,it is also found that the electric conductivity of the aerogels is good.
【Key words】 carbon aerogels; HF organic aerogels; sol-gel method; conductance;
- 【文献出处】 现代化工 ,Modern Chemical Industry , 编辑部邮箱 ,2006年02期
- 【分类号】O648.17
- 【被引频次】3
- 【下载频次】280