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Study on Modification of Ammonium Nitrate by Gemini Surfactants Ye Zhiwen, Lu Chunxu, Liu Zuliang 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. Gemini表面活性剂对硝酸铵的改性研究 叶志文 吕春绪 刘祖亮 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。 叶志文 男，35，副研究员，博士，从事工业含能材料研究。
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