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Simulation of Heat Flow Curves of NC-Based Propellants – Part 2: Application to DPA Stabilized Propellants.
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-05-26 , DOI: 10.1002/prep.202000313 Daniel G. Itkis 1 , Manfred A. Bohn 1
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-05-26 , DOI: 10.1002/prep.202000313 Daniel G. Itkis 1 , Manfred A. Bohn 1
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Measuring of heat flow curves at temperatures near the in-service range have become a standard for stability and compatibility assessments of nitrocellulose (NC)-based energetic materials. The typical technique to realise this demand is heat flow microcalorimetry. The heat flow curves are the summarized effect of the rates of all the reaction heats in the mixture. The propellant composition has a significant influence on the shapes of the heat flow curves. To assess the stability on a firmer base, it is of interest to know what contributions to the total heat flow the individual reactions have from the NC decomposition and from the stabilizer reactions. This needs the simulation of the heat flow curves based on the individual reactions with their thermochemical data and their reaction rates. For this, the reaction enthalpies of all relevant reactions must be known. On these prerequisites was reported in part 1. With the data from there, the simulation of the heat flow curve of the ball powder propellant type K6210 was undertaken, using a reaction scheme for the nitrate ester decomposition and the DPA reactions. In principle, the here developed and applied procedure is usable for all types of NC-based propellants and heat flow curves.
中文翻译：
基于 NC 的推进剂的热流曲线模拟 - 第 2 部分：DPA 稳定推进剂的应用。
在接近服役范围的温度下测量热流曲线已成为评估硝化纤维 (NC) 基含能材料稳定性和相容性的标准。实现这一需求的典型技术是热流微量热法。热流曲线是混合物中所有反应热速率的汇总效应。推进剂成分对热流曲线的形状有显着影响。为了在更坚固的基础上评估稳定性，了解 NC 分解和稳定剂反应对各个反应对总热流的贡献是很有趣的。这需要基于单个反应及其热化学数据和反应速率来模拟热流曲线。为了这，必须知道所有相关反应的反应焓。第 1 部分报告了这些先决条件。根据那里的数据，使用硝酸酯分解和 DPA 反应的反应方案，对 K6210 型球粉推进剂的热流曲线进行了模拟。原则上，这里开发和应用的程序可用于所有类型的基于 NC 的推进剂和热流曲线。
更新日期：2021-05-26
中文翻译：
基于 NC 的推进剂的热流曲线模拟 - 第 2 部分：DPA 稳定推进剂的应用。
在接近服役范围的温度下测量热流曲线已成为评估硝化纤维 (NC) 基含能材料稳定性和相容性的标准。实现这一需求的典型技术是热流微量热法。热流曲线是混合物中所有反应热速率的汇总效应。推进剂成分对热流曲线的形状有显着影响。为了在更坚固的基础上评估稳定性，了解 NC 分解和稳定剂反应对各个反应对总热流的贡献是很有趣的。这需要基于单个反应及其热化学数据和反应速率来模拟热流曲线。为了这，必须知道所有相关反应的反应焓。第 1 部分报告了这些先决条件。根据那里的数据，使用硝酸酯分解和 DPA 反应的反应方案，对 K6210 型球粉推进剂的热流曲线进行了模拟。原则上，这里开发和应用的程序可用于所有类型的基于 NC 的推进剂和热流曲线。
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