Linear Burning Rate and Erosivity Properties of Nitrocellulose Propellant Formulations Plasticized by Glycidyl Azide Polymer and Nitroglycerine,Propellants, Explosives, Pyrotechnics

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Linear Burning Rate and Erosivity Properties of Nitrocellulose Propellant Formulations Plasticized by Glycidyl Azide Polymer and Nitroglycerine
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-01-27 , DOI: 10.1002/prep.202000180
Etienne Comtois ₁ , Basil D. Favis ₁ , Charles Dubois ₁

Affiliation

The performance of the extruded cord geometry of nitrocellulose (NC) propellants plasticized by glycidyl azide polymer (GAP) and nitroglycerine (NG) has been evaluated using both closed and erosion vented vessel techniques in order to obtain the linear burning rate and the relative erosivity of these propellants. The closed vessel experiments performed at −46, 21 and 63 °C demonstrate that the measured maximum pressure is in accordance with the calculation obtained using the CHEETAH V2 thermochemical code. From the closed vessel analysis, the linear burning rates show that it is on average 89±3 % that of the 21 °C propellant when fired at −46 °C. and 112±4 % when fired at 63 °C. The addition of either GAP or NG increases the linear burning rate when compared to the neat NC formulation. Relative erosion data obtained in the erosion vented vessel are in agreement with the Arisawa‐Kimura models and it is found that the ratio of CO/CO₂ concentration in combustion gases is a better erosivity indicator than N₂/CO ratio.

中文翻译：

缩水甘油基叠氮化物聚合物和硝化甘油增塑的硝化纤维素推进剂配方的线性燃烧速率和侵蚀性

已使用密闭和腐蚀排气容器技术对由缩水甘油基叠氮化物聚合物（GAP）和硝化甘油（NG）增塑的硝化纤维素（NC）推进剂的挤出帘线几何形状性能进行了评估，以获得线性燃烧速率和相对侵蚀性这些推进剂。在-46、21和63°C下进行的密闭容器实验表明，测得的最大压力符合使用CHEETAH V2热化学法获得的计算结果。根据密闭容器分析，线性燃烧速率显示，在-46°C下燃烧时，平均燃烧速率为21°C推进剂的平均燃烧速率的89±3％。和在63°C燃烧时为112±4％。与纯净NC配方相比，添加GAP或NG可以提高线性燃烧速率。燃烧气体中的₂浓度比N ₂ / CO比是更好的腐蚀性指标。

更新日期：2021-03-04

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