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Effect of Composite Emulsifiers on Thermal Decomposition Characteristics and Detonation Velocity of HANFO Emulsion Matrices
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2020-06-23 , DOI: 10.1002/prep.202000007 Hong‐wei Li 1 , Zhan Lei 1 , Ji‐chang Gui 1
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2020-06-23 , DOI: 10.1002/prep.202000007 Hong‐wei Li 1 , Zhan Lei 1 , Ji‐chang Gui 1
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To study the effect of composite emulsifiers on the thermal decomposition characteristics and detonation velocity of heavy ammonium nitrate‐fuel oil (HANFO) emulsion matrices, the thermal decomposition process of the emulsion matrices prepared by five different composite emulsifiers was studied by thermogravimetry−differential thermogravimetry (TG‐DTG) under four heating rates. The thermodynamic parameters such as activation energy and pre‐exponential factor of the five emulsion matrices were calculated by the Ozawa method and the Kissinger method, and the mechanism function was solved by the Šatava‐Šesták method. The detonation velocity of HANFO emulsion matrices was measured using a discrete‐point electric method. The results showed that the decomposition onset temperature of the HANFO emulsion matrix first increased and then decreased with the addition of emulsifier T152. The emulsion matrix with a Span80 : T152 ratio of 1 : 2 exhibited the highest decomposition onset temperature of 171 °C. Among the five samples, sample 4 had the highest activation energy (108.71 kJ mol−1), indicating that the thermal stability of sample 4 was greater than those of the other four samples. The detonation velocity test results revealed that the composite emulsifier strongly affected the detonation performance of HANFO. The sample with a Span‐80 : T‐152 ratio of 1 : 2 had a higher detonation velocity than the other four samples.
中文翻译：
复合乳化剂对HANFO乳液基体热分解特性和爆速的影响
为了研究复合乳化剂对重硝酸硝酸铵-燃料油（HANFO）乳化基质的热分解特性和爆轰速度的影响，通过热重分析-差示热重分析法研究了五种不同的复合乳化剂制备的乳化基质的热分解过程（ TG-DTG）在四个加热速率下。用Ozawa方法和Kissinger方法计算了这五个乳液基质的热力学参数，例如活化能和指数前因子，并通过Šatava-Šesták方法求解了机理函数。使用离散点电法测量HANFO乳液基质的爆轰速度。结果表明，随着乳化剂T152的加入，HANFO乳液基质的分解起始温度先升高后降低。Span80：T152比为1：2的乳液基质的最高分解起始温度为171°C。在这五个样品中，样品4的活化能最高（108.71 kJ mol-1），表明样品4的热稳定性大于其他四个样品的热稳定性。爆速测试结果表明，复合乳化剂对HANFO的爆轰性能有很大影响。Span-80：T-152比为1：2的样品的爆震速度高于其他四个样品。
更新日期：2020-06-23
中文翻译：
复合乳化剂对HANFO乳液基体热分解特性和爆速的影响
为了研究复合乳化剂对重硝酸硝酸铵-燃料油（HANFO）乳化基质的热分解特性和爆轰速度的影响，通过热重分析-差示热重分析法研究了五种不同的复合乳化剂制备的乳化基质的热分解过程（ TG-DTG）在四个加热速率下。用Ozawa方法和Kissinger方法计算了这五个乳液基质的热力学参数，例如活化能和指数前因子，并通过Šatava-Šesták方法求解了机理函数。使用离散点电法测量HANFO乳液基质的爆轰速度。结果表明，随着乳化剂T152的加入，HANFO乳液基质的分解起始温度先升高后降低。Span80：T152比为1：2的乳液基质的最高分解起始温度为171°C。在这五个样品中，样品4的活化能最高（108.71 kJ mol-1），表明样品4的热稳定性大于其他四个样品的热稳定性。爆速测试结果表明，复合乳化剂对HANFO的爆轰性能有很大影响。Span-80：T-152比为1：2的样品的爆震速度高于其他四个样品。
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