某三基发射药的老化寿命评估
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摘要
分别在51、61、71、81℃下,以发射药装药壳体约束内湿度75%为模拟条件,对由硝基胍、硝化棉、硝化甘油、叠氮硝胺和中定剂为主要成分所组成的新型三基发射药进行了加速老化试验;设置空白对照组以探究中定剂相对含量、抗压强度和燃烧性能随老化时间的变化规律以及湿度对各性能的影响规律;采用MATLAB计算软件、Berthelot方程对不同失效判据下发射药安全贮存寿命进行了预估。结果表明,样品中的中定剂相对含量随老化时间的增加逐渐下降;样品的抗压强度随着老化时间的增加而下降;样品的燃烧渐增性没有随老化时间而变化。分别以中定剂消耗50%和抗压强度降低50%为失效判据,计算得到发射药样品在25℃、壳体约束内湿度为75%条件下的安全贮存寿命分别为8. 9年和8. 2年。
An accelerated aging test of a new tri-base gun propellant composed of main components,nitroguanidine,nitrocellulose,nitroglycerin,azide nitramine and centralite was performed at 51,61,71 and 81 ℃,respectively,taking 75 % humidity in the confined shell of gun propellant charge as the simulated condition. A black control group was set up to explore the change rule of the relative content of centralite,compressive strength,combustion performance with aging time and the influence rule of humidity on each performance. The safe storage life of gun propellant under different failure criteria was predicted by MATLAB calculation software and Berthelot' s equation. The results show that the relative content of centralite in the sample decreases gradually with the increase of aging time,and the compressive strength of the sample decreases with the increase of aging time,the combustion progressivity of the sample does not change with aging time. The safe storage lives at 25 ℃ under the condition of humidity as 75 % in the confined shell of gun propellant sample needed for consuming the centralite of 50 % and decreasing the compressive strength of 50 % are 8. 9 years and 8. 2 years,respectively.
An accelerated aging test of a new tri-base gun propellant composed of main components,nitroguanidine,nitrocellulose,nitroglycerin,azide nitramine and centralite was performed at 51,61,71 and 81 ℃,respectively,taking 75 % humidity in the confined shell of gun propellant charge as the simulated condition. A black control group was set up to explore the change rule of the relative content of centralite,compressive strength,combustion performance with aging time and the influence rule of humidity on each performance. The safe storage life of gun propellant under different failure criteria was predicted by MATLAB calculation software and Berthelot' s equation. The results show that the relative content of centralite in the sample decreases gradually with the increase of aging time,and the compressive strength of the sample decreases with the increase of aging time,the combustion progressivity of the sample does not change with aging time. The safe storage lives at 25 ℃ under the condition of humidity as 75 % in the confined shell of gun propellant sample needed for consuming the centralite of 50 % and decreasing the compressive strength of 50 % are 8. 9 years and 8. 2 years,respectively.
引文
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[12] RUI Xiao-ting,YUN Lai-feng,CHEN Tao. Evaluating method for launch safety of pr-opellant charge[C]∥2009International Autumn Seminar on Propellants,Explosives and Pyrotechnics. Kunming:Beijing Institute of Technology,2009.
[13]张兴高,张炜,王春华,等.定应变作用下NEPE推进剂老化特性及寿命预估研究[J].国防科技大学学报,2009,31(3):20-24.ZHANG Xing-gao,ZHANG Wei,WANG Chun-hua,et al. The aging property and life prediction of NEPE propellant under constant strain[J]. Journal of National University of Deffense and Technology,2009,31(3):20-24.
[2]俞朝晖.发射药安定性的评估方法探讨[J].火炸药学报(原火炸药),1992,15(1):7-9.YU Zhao-hui. Discussion on the evaluation method of the stability of the propellant[J]. Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),1992,15(1):7-9.
[3]衡淑云,韩芳,张林军,等.硝酸酯火药安全贮存寿命的预估方法和结果[J].火炸药学报,2006,29(4):71-76.HENG Shu-yun,HAN Fang,ZHANG Lin-jun,et al. Estimation method and mesults of mafe mtorage life for mitrate ester propellants[J]. Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2006, 29(4):71-76.
[4]路桂娥,江劲勇,李孝玉,等.甲基紫试验用于长贮发射药安全性检测的可行性探讨[J].含能材料,2006,14(2):127-128.LU Gui-e,JIANG Jin-yong,LI Xiao-yu,et al. Feasibility of methyl-violet test used in storage stability of propellant[J]. Chinese Journal of Energetic Materials,2006,14(2):127-128.
[5]顾妍,张冬梅,张林军,等.某三基发射药贮存寿命的预估方法[J].火炸药学报,2017,40(1):91-96.GU Yan,ZHANG Dong-mei,ZHANG Lin-jun,et al.Method of predicting the storage life of a tri-base gun propellant[J]. Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2017,40(1):91-96.
[6]齐晓飞,张晓宏,张伟,等. NC/NG共混体系的塑化行为[J].推进技术,2013,34(6):843-848.QI Xiao-fei,ZHANG Xiao-hong,ZHANG Wei,et al.Study on plasticizing process of NC/NG blends[J].Journal of Propulsion Technology, 2013,34(6):843-848.
[7]陈言坤,罗兴柏,甄建伟,等.粒状发射药的力学性能[J].火炸药学报,2013,36(6):82-85.CHEN Yan-kun,LUO Xing-bai,ZHEN Jian-wei,et al.Mechanical properties of granular gun propellant[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2013,36(6):82-85.
[8]姚月娟,王锋,张远波,等.提高新型高能发射药力学性能研究[J].计测技术,2013,33:132-133.YAO Yue-juan,WANG Feng,ZHANG Yuan-bo,et al.Study on improving the mechanical properties of new high energy propellants[J]. Metrology&Measurement Technology,2013,33:132-133.
[9]齐晓飞,张晓宏,严启龙,等.硝化纤维素/硝化甘油共混体系力学状态的温度依赖特性[J].推进技术,2016,37(7):1387-1392.QI Xiao-fei, ZHANG Xiao-hong,YAN Qi-long,et al.Temperature dependence of mechanical state for nitrocellulose/nitroglycerin in blend[J]. Journal of Propulsion Technology,2016,37(7):1387-1392.
[10]贠来峰.发射装药发射安全性评定方法研究[D].南京:南京理工大学,2008.YUN Lai-feng. Study on the method evaluating the launch safety for gun propellant charge[D]. Nanjing:Nanjing University of Science and Technology,2008.
[11]杨均匀,袁亚雄,张小兵.发射药破碎对火炮射击安全性影响的研究综述[J].弹道学报,1999(4):92-96.YANG Jun-yun,YUAN Ya-xiong,ZHANG Xiao-bing.Research survey of the effect of grain fracture on the fire safety in solid propellant gun[J]. Journal of Ballistics,1999(4):92-96.
[12] RUI Xiao-ting,YUN Lai-feng,CHEN Tao. Evaluating method for launch safety of pr-opellant charge[C]∥2009International Autumn Seminar on Propellants,Explosives and Pyrotechnics. Kunming:Beijing Institute of Technology,2009.
[13]张兴高,张炜,王春华,等.定应变作用下NEPE推进剂老化特性及寿命预估研究[J].国防科技大学学报,2009,31(3):20-24.ZHANG Xing-gao,ZHANG Wei,WANG Chun-hua,et al. The aging property and life prediction of NEPE propellant under constant strain[J]. Journal of National University of Deffense and Technology,2009,31(3):20-24.