Study on Modification of Ammonium Nitrate by Gemini Surfactants Ye Zhiwen, Lu Chunxu, Liu Zuliang (Nanjing University of Science and Technology, Nanjing 210094) Abstract In this paper, ammonium nitrate is modified by separately treated with common surfactants and Gemini surfactants for comparison. Both the modified ammonium nitrate samples are examined by SEM and other testing methods for pore radius and pore volume's distribution, particle size’s distribution, specific surface area, anti-hygroscopocity and anti-caking properties. the results show that, compared with the modified ammonium nitrate treated by common surfactants, the modified ammonium nitrate treated with Gemini surfactants has better properties such as disproportionate crystal shape, larger specific surface area, containing great number of gas-pocket with most of valid pore radius in range of meso-pore, smaller range of particle size and better performances of anti-hygroscopicity and anti-caking. The powder industrial explosive made from the modified ammonium nitrate treated by Gemini surfactants have better properties of physics and explosion. Key words Gemini surfactant, Ammonium Nitrate, Modification Gemini 表面活性剂对硝酸铵的改性研究 叶志文 吕春绪 刘祖亮 (南京理工大学化工学院 南京 210094) 摘要 本文通过对普通表面活性剂、Gemini 表面活性剂分别处理的改性硝酸铵进行电镜扫描、孔径、孔容分布、粒径分布、比表面积、抗吸湿结块性及爆炸性能的实验研究，所得结果表明：同普通表面活性剂处理的改性硝酸铵相比，Gemini 改性硝酸铵的晶形不规则、比表面积大，富含气孔，更多的有效孔径处于介孔范围，有较小的粒径范围，并且有良好的抗吸湿结块性，用其制得的粉状工业炸药具有更好的物理性能和爆炸性能。 关键词 Gemini 表面活性剂 硝酸铵 改性 叶志文 男，35，副研究员，博士，从事工业含能材料研究。 E-mail:yzw208894@sina.com 2003-02-27 收稿 (PDF全文下载c04004)