Span-80和T-152对乳化炸药低温稳定性的影响  

THE EFFECTS OF SPAN-80 AND T-152 ON THE STABILITY OF EMULSION EXPLOSIVE AT LOW TEMPERATURES

作　　者：申夏夏[1] 吴红波[1] 黄文尧[1] 王道阳[1] 缪志军[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《工程爆破》2015年第4期20-23,68,共5页Engineering Blasting

基　　金：安徽理工大学博士基金项目资助

摘　　要：分别以Span-80、T-152为乳化剂制备乳胶基质和乳化炸药,在-30℃冷冻10天后通过水溶法测定它们的析晶率,并用显微镜观察两种乳胶基质。结果表明:用T-152制备的乳化炸药冷冻后的析晶率是用Span-80制备乳化炸药的3.57倍,前者的破乳程度高于后者。采用Chem3D软件的MM2分子动力学模块对Span-80和T-152分子进行Molecular Dynamics计算,模拟低温对乳化剂分子结构的影响,分析两种乳化剂制备的乳化炸药在低温下稳定性产生差异的原因。计算结果显示:-30℃时T-152分子失去立体结构,可能是用T-152制备的乳化炸药低温稳定性较差的主要原因。Span-80 and T-152 were used as emulsifier to prepare emulsion matrix and emulsion explo- sive. The crystallization rate of emulsion explosives were measured by solution method after they were frozen for 10 days at - 30℃, the two kinds of emulsion matrix were observed by microscope. The experi- mental results showed that the crystallization rate of the emulsion explosive made by T-152 was 3.57 times more than that made by Span-80, and the emulsion matrix made by T-152 demulsified more serious than the one made by Span-80. Based on Molecular Dynamics by using MM2 Kinetics Module software of Chem3D, the molecular structures of Span-80 and T-152 were calculated in order to simulate the effects of low-temperature environment on the molecular structures of emulsifier. Furthermore, the reasons of different stability of emulsion explosive made by Span-80 and T-152 were analyzed. The calculation also showed that T-152 lost its stereochemical structure at -30℃, which was considered the possible main reason that the emulsion explosive made by T-152 had a poor stability at low temperature.

关 键 词：乳化剂 SPAN-80 T-152 乳化炸药 稳定性 耐低温性能 

分 类 号：TQ564.06[化学工程—炸药化工] TD235.2[矿业工程—矿井建设]