改性硝酸铵自敏化结构特征

对经复合表面活性剂处理的改性硝酸铵及普通硝酸铵晶体进行电镜扫描，孔径孔容分布，粒径分布，比表面积测定，抗吸湿结块性，差示量热分析以及爆炸性能的实验研究，结果表明，与普通硝酸铵相比，改性硝酸铵的晶形歧化，比表面积大，富含气孔，大部分的有效孔径座落在介孔范围，有较好的粒度级配，晶变热降低，且晶变点后移，具备自敏化结构特征，并且有良好的抗吸湿结块性，用它代替普通硝酸铵所制得的粉状工业炸药具有良好的物理性能和爆炸性能。

Self-sensitizable Characteristics of Modified Ammonium Nitrate

Ammonium nitrate has been modified by evaporative recrystallization from its mixture solution with hexadecyl trimethyl ammonium bromide and sodium dodecyl sulfate. The physical property of the modified compound has been investigated by SEM, DSC, specific surface area and explosibility measurements. The results show that in comparison with common ammonium nitrate, the modified ammonium nitrate has an irregular crystal shape, greater specific surface area, better particle size distribution, lower heat of crystal pattern transition and higher transition temperature. These indicate the modified ammonium nitrate has a mesoporous structure with good self sensitizable, anti hygroscopic and anticaking performance as an industrial explosive agent.