第 47 卷第 5 期 Vol. 47 No. 5 2017 年 10 月 Oct 2017

所属栏目：功能材料 氧化石墨烯／氨基硅氧烷复合气凝胶的制备与性能研究

李红朝1，李延斌1，杜栓丽2，熊继军3，陈晓勇2，3 （1. 中北大学 理学院，山西 太原 030051；2. 中北大学 化工与环境学院，山西 太原 030051；3. 仪器科学与动态测试教育部重点实验室，山西 太原 030051）

摘　要：以氨基硅氧烷、烷基硅氧烷和石墨烯氧化物（GO）为原料，经溶胶-凝胶-冷冻干燥法一锅法制备了一种新型氧化石墨烯／氨基硅氧烷复合气凝胶——本征氨化硅基复合气凝胶；利用红外光谱（IR）、扫描电镜（SEM）、比表面积分析（BET）、热重分析（TG）、CO2吸附量测试（Quantity Adsorbed of CO2）对所得气凝胶进行了结构表征确证及性能测试。所得复合气凝胶具有双互穿网络结构，含GO氨化硅基气凝胶样品热分解温度在470℃，无GO氨化硅基气凝胶样品热分解温度为360℃。两者均有较高的热稳定性。在273 K，相对压力为0.033时，无GO氨化硅基气凝胶样品CO2吸附量为11.60 mg·g-1，含GO氨化硅基气凝胶样品CO2吸附量为11.92 mg·g-1。

关键词：弹性硅基气凝胶；复合气凝胶；氨化；溶胶-凝胶法

中图分类号：O63　　文献标识码：A　　文章编号：1009-9212（2017）05-0055-06

Preparation and Performance Study of Amino-modified Siloxane-based Hybrid Aerogels with Go

LI Hong-chao1, LI Yan-bin1, DU Shuan-li2, Xiong Ji-jun3，CHEN Xiao-yong2,3 (1. School of Science, North University of China, Taiyuan 030051, China; 2. School of Chemical Engineering and Environment, North University of China, Taiyuan 030051, China; 3. Key Laboratory of Instrumentation Science and Dynamic Testing of Ministry of Education, Taiyuan 030051, China)

Abstract：A novel amino-modified siloxane-based hybrid aerogel with GO was obtained by a sol-gel process and vacuum freeze-drying method using amino-containing siloxanes, alkyl siloxanes and graphene oxides as raw materials. Infrared spectroscopy(IR), scanning electron microscopy (SEM), specific surface area analysis (BET), thermogravimetric analysis(TG), quantity adsorbed of CO2 were used to characterize the structure and properties of these obtained aerogels. The testing results confirmed that the desired composite aerogels were obtained. The composite aerogels had a structure of double interpenetrating network. The thermal decomposition temperature of the siloxane-based hybrid aerogel with GO was 470℃. The thermal decomposition temperature of the siloxane-based hybrid aerogel without GO was 360℃. Both have high thermal stability. At 273 K and the relative pressure of 0.033, the adsorption amount of CO2, siloxane-based hybrid aerogel without GO was 11.60 mg·g-1, while siloxane-based hybrid aerogel with GO was 11.92 mg·g-1.

Key words：silica-based aerogel; hybrid aerogel material; amino group modification; sol-gel method

基金项目：国家青年基金项目（51505435），博士后科学基金项目（2014M551061）。

作者简介：李红朝（1987-），男，山西临汾人，硕士研究生，研究方向：功能高分子复合材料（E-mail：642161703@qq.com）。

联 系 人：陈晓勇，副教授，研究方向：特殊高分子合成（PDC）与智能应用、含能MEMS器件与制造、新型微波测试与传感器基础及应用

收稿日期：2017-10-10