催化剂对三聚氰胺-甲醛有机气凝胶的影响  

Effect of catalyst on melamine-formaldehyde organic aerogel

作　　者：孙志鹏[1,2] 杨曦[1] 付志兵[1] 马康夫[3] 钟铭龙[1] 黄小丽[3] 常丽娟[2] 王朝阳[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]四川大学原子与分子物理研究所,成都610065 [3]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《强激光与粒子束》2013年第4期913-917,共5页High Power Laser and Particle Beams

基　　金：中国工程物理研究院科学技术发展基金项目(2009A0302020)

摘　　要：采用溶胶-凝胶法制备出一系列不同催化剂种类和浓度的三聚氰胺-甲醛(MF)有机气凝胶模板,通过傅里叶变换红外光谱仪、热分析仪、N2吸附等测试手段对其分子结构、热稳定性、孔结构进行了表征。测试结果表明:催化剂种类和浓度变化不影响模板的分子结构和热性能;各模板热解程度均达97%;相比NaOH和NaHCO3为催化剂制备的模板,Na2CO3为催化剂时,制备的模板更优,比表面积和孔容较大,孔分布范围较宽;当三聚氰胺与催化剂的浓度比为500时,比表面积达到最大。A series of melamine-formaldehyde（MF） organic aerogel templates were prepared with different categories and concentration of catalyst. Their molecular structure, thermal stability and pore structure were tested by Fourier transform infra- red spectroscopy, thermogravimetric analysis and nitrogen adsorption. It is indicated that the type and concentration of catalyst do not affect molecular structure and thermal stability of the MF organic aerogel template. The specific surface area and pore volume of the MF organic aerogel template using Na2 CO3 as catalyst are higher than those using NaOH, NaHCO3 as catalyst. When the ratio of the concentration of melamine to that of catalyst is 500, the specific surface area is maximized.

关 键 词：催化剂 溶胶-凝胶 模板 热稳定性 

分 类 号：TQ177[化学工程—硅酸盐工业] TK91[动力工程及工程热物理]