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Thermo-analytical study of 2,2,2-trinitroethyl-formate as a new oxidizer and its propellant based on a GAP matrix in comparison with ammonium dinitramide
Journal of Analytical and Applied Pyrolysis ( IF 5.8 ) Pub Date : 2018-08-01 , DOI: 10.1016/j.jaap.2018.05.004
Mohamed Abd-Elghany , Ahmed Elbeih , Thomas M. Klapötke

A new high energy dense oxidizer (HEDO) 2,2,2-trinitroethyl-formate (TNEF) was prepared and characterized by nuclear magnetic resonance (NMR). A new propellant based on glycidyl azide polymer (GAP) and TNEF was prepared. Thermo-analytical study of TNEF in comparison with ammonium dinitramide (ADN) and their propellant formulations based on GAP were investigated. The decomposition gaseous products and the combustion characteristics of the propellants were determined by using thermodynamic code (EXPLO5_V6.03). Scanning electron microscope (SEM) technique was applied to clarify the crystal morphology of the oxidizers in addition to the homogeneity of the propellants ingredients. Impact and friction sensitivities of the oxidizers and the GAP binder were measured. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) techniques were used to study the pyrolysis of the oxidizers as well as the prepared propellants. The decomposition kinetics were determined by Kissinger and Kissinger-Akahira-Sunose (KAS) methods The thermal degradation of ADN is faster than TNEF oxidizer. ADN and TNEF have melting temperatures at 95.5 and 127.1 degrees C and maximum decomposition temperature at 183.5 and 210.1 degrees C respectively. In addition, TNEF has activation energy in the range of 131-1461d mol(-1), while ADN has activation energy in the range of 114-117 kJ mol(-1). TNEF has specific impulse (250.1 s) higher than ADN (202.4 s). TNEF is a promising oxidizer to be used in composite solid rocket propellants.

中文翻译:

基于GAP基质的2,2,2-三硝基乙基甲酸酯作为新型氧化剂及其推进剂与二硝酰胺铵的热分析研究

制备了一种新的高能量密度氧化剂 (HEDO) 2,2,2-三硝基乙基甲酸酯 (TNEF),并通过核磁共振 (NMR) 对其进行了表征。制备了一种基于缩水甘油叠氮聚合物(GAP)和TNEF的新型推进剂。研究了 TNEF 与二硝胺 (ADN) 及其基于 GAP 的推进剂配方相比的热分析研究。推进剂的分解气态产物和燃烧特性采用热力学代码(EXPLO5_V6.03)测定。除了推进剂成分的均匀性外,还应用扫描电子显微镜 (SEM) 技术来阐明氧化剂的晶体形态。测量了氧化剂和 GAP 粘合剂的冲击和摩擦敏感性。差示扫描量热法 (DSC) 和热重分析 (TGA) 技术用于研究氧化剂以及制备的推进剂的热解。分解动力学由 Kissinger 和 Kissinger-Akahira-Sunose (KAS) 方法确定。ADN 的热降解比 TNEF 氧化剂快。ADN 和 TNEF 的熔化温度分别为 95.5 和 127.1 摄氏度,最大分解温度分别为 183.5 和 210.1 摄氏度。此外,TNEF 的活化能范围为 131-1461d mol(-1),而 ADN 的活化能范围为 114-117 kJ mol(-1)。TNEF 的比冲 (250.1 s) 高于 ADN (202.4 s)。TNEF 是一种很有前途的氧化剂,可用于复合固体火箭推进剂。分解动力学由 Kissinger 和 Kissinger-Akahira-Sunose (KAS) 方法测定。ADN 的热降解比 TNEF 氧化剂快。ADN 和 TNEF 的熔化温度分别为 95.5 和 127.1 摄氏度,最大分解温度分别为 183.5 和 210.1 摄氏度。此外,TNEF 的活化能范围为 131-1461d mol(-1),而 ADN 的活化能范围为 114-117 kJ mol(-1)。TNEF 的比冲 (250.1 s) 高于 ADN (202.4 s)。TNEF 是一种很有前途的氧化剂,可用于复合固体火箭推进剂。分解动力学由 Kissinger 和 Kissinger-Akahira-Sunose (KAS) 方法测定。ADN 的热降解比 TNEF 氧化剂快。ADN 和 TNEF 的熔化温度分别为 95.5 和 127.1 摄氏度,最大分解温度分别为 183.5 和 210.1 摄氏度。此外,TNEF 的活化能范围为 131-1461d mol(-1),而 ADN 的活化能范围为 114-117 kJ mol(-1)。TNEF 的比冲 (250.1 s) 高于 ADN (202.4 s)。TNEF 是一种很有前途的氧化剂,可用于复合固体火箭推进剂。分别为 5 和 210.1 摄氏度。此外,TNEF 的活化能范围为 131-1461d mol(-1),而 ADN 的活化能范围为 114-117 kJ mol(-1)。TNEF 的比冲 (250.1 s) 高于 ADN (202.4 s)。TNEF 是一种很有前途的氧化剂,可用于复合固体火箭推进剂。分别为 5 和 210.1 摄氏度。此外,TNEF 的活化能范围为 131-1461d mol(-1),而 ADN 的活化能范围为 114-117 kJ mol(-1)。TNEF 的比冲 (250.1 s) 高于 ADN (202.4 s)。TNEF 是一种很有前途的氧化剂,可用于复合固体火箭推进剂。
更新日期:2018-08-01
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