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2015, v.21(04) 20-23+68

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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

申夏夏;吴红波;黄文尧;王道阳;缪志军;
SHEN Xia-xia;WU Hong-bo;HUANG Wen-yao;WANG Dao-yang;MIAO Zhi-jun;School of Chemical Engineering,Anhui University of Science and Technology;

摘要(Abstract):

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 explosive.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 experimental 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 Chem3 D,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(KeyWords): 乳化剂;Span-80;T-152;乳化炸药;稳定性;耐低温性能
Emulsifier;Span-80;T-152;Emulsion explosive;Stability;Low-temperature resistance

Abstract:

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基金项目(Foundation): 安徽理工大学博士基金项目资助

作者(Authors): 申夏夏;吴红波;黄文尧;王道阳;缪志军;
SHEN Xia-xia;WU Hong-bo;HUANG Wen-yao;WANG Dao-yang;MIAO Zhi-jun;School of Chemical Engineering,Anhui University of Science and Technology;

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