RDX对改性单基发射药燃烧性能的影响
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摘要
为提高单基发射药(硝化棉/二硝基甲苯/邻苯二甲酸二丁酯/二苯胺,NC/DNT/DBP/DPA)的能量,在单基发射药中加入不同含量(5%、10%、15%、20%)、不同粒度(0.2,3.7,7.6,100.0μm)的黑索今(RDX),制备并得到改性单基发射药。通过密闭爆发器实验研究了RDX含量、粒度对改性单基发射药燃烧性能的影响规律。实验结果表明:在RDX粒度为7.6μm时,改性单基发射药的燃速随RDX含量的增加先降低再升高,在RDX含量为10%附近存在一个最小值;在50~p_(dpm)MPa(p_(dpm)为最大压力陡度所对应的压力值),改性单基发射药的燃速压力指数平均值均大于1。当RDX含量为5%时,改性单基发射药的燃速随RDX粒度的减小而减小;在50~p_(dpm)MPa,粒度为0.2,3.7μm的RDX改性单基发射药的燃速压力指数平均值均小于1,粒度为7.6,100.0μm的RDX改性单基发射药的燃速压力指数平均值均大于1。
To improve the energy of a kind of single base propellant( nitrocellulose /2,4-dinitrotoluen / dibutyl phthalate / diphenylamine,NC /DNT / DBP / DPA),cyclotrimethylenetrinitramine( RDX) with different contents( 5%,10%,15% and 20%) and different particle sizes( 0.2 μm,3. 7 μm,7. 6 μm and 100. 0 μm) were added into this single base propellant,and then the modified single base propellants containing RDX were prepared and obtained. The effect of content and particle size of RDX on the combustion performances of these modified single base propellants was studied by closed bomb experiments. The results show that: when the RDX particle size is 7. 6 μm,with increasing the content of RDX,the burning rate of the modified single base propellant first decreases and then increases,and has a minimum value when the content of RDX is in the vicinity of 10%; the average values of the burning rate pressure exponent of modified single base propellants are all greater than 1 in the pressure range of 50- p_(dpm)MPa( p_(dpm)is the corresponding pressure when dp / dt reaches its maximum value); when the content of RDX is 5%,the burning rate of modified single base propellant decreases with decreasing the particle size of RDX,and in the pressure range of 50- p_(dpm)MPa,the average values of the burning rate pressure exponents of modified single base propellants with0. 2 μm and 3. 7 μm RDX are both less than 1,while the mean values of the burning rate pressure exponent of modified single base propellants with 7. 6 μm and 100. 0 μm RDX are both greater than 1.
To improve the energy of a kind of single base propellant( nitrocellulose /2,4-dinitrotoluen / dibutyl phthalate / diphenylamine,NC /DNT / DBP / DPA),cyclotrimethylenetrinitramine( RDX) with different contents( 5%,10%,15% and 20%) and different particle sizes( 0.2 μm,3. 7 μm,7. 6 μm and 100. 0 μm) were added into this single base propellant,and then the modified single base propellants containing RDX were prepared and obtained. The effect of content and particle size of RDX on the combustion performances of these modified single base propellants was studied by closed bomb experiments. The results show that: when the RDX particle size is 7. 6 μm,with increasing the content of RDX,the burning rate of the modified single base propellant first decreases and then increases,and has a minimum value when the content of RDX is in the vicinity of 10%; the average values of the burning rate pressure exponent of modified single base propellants are all greater than 1 in the pressure range of 50- p_(dpm)MPa( p_(dpm)is the corresponding pressure when dp / dt reaches its maximum value); when the content of RDX is 5%,the burning rate of modified single base propellant decreases with decreasing the particle size of RDX,and in the pressure range of 50- p_(dpm)MPa,the average values of the burning rate pressure exponents of modified single base propellants with0. 2 μm and 3. 7 μm RDX are both less than 1,while the mean values of the burning rate pressure exponent of modified single base propellants with 7. 6 μm and 100. 0 μm RDX are both greater than 1.
引文
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[11]杨建兴,贾永杰,刘毅,等.含RDX的叠氮硝胺发射药热分解与燃烧性能[J].含能材料,2012,20(2):180-183.YANG Jian-xing,JIA Yong-jie,LIU Yi,et al.Thermal decomposition and combustion performance of azidonitramine gun propellant containing RDX[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2012,20(2):180-183.
[2]Vogelsanger B,Schadeli U,Antenen D.ECL-A new propellant family with improved safety and performance properties[C]∥38th International Annual Conference of ICT.Karlsruhe:IEEE,2007:15/1-15/12.
[3]Vogelsanger B,Schadeli U,Antenen D.Ei+-a New nitro-glycerine free and sensitiveness reduced propellant for medium calibre and mortar applications[C]∥33th International Annual Conference of ICT.Karlsruhe:IEEE,2002:18/1-18/15.
[4]Vogelsanger B,Ryf K.El-technology-the key for high performance propulsion design[C]∥29th International Annual Conference of ICT.Karlsruhe:IEEE,1998:38/1-38/14.
[5]潘清,王琼林,苏鹏飞,等.改性单基发射药中聚酯钝感剂的扩散研究[J].火炸药学报,2013,36(2):65-68.PAN Qing,WANG Qiong-lin,SU Peng-fei,et al.Study on diffusion of polyester deterrent in modified single-base propellant[J].Chinese Journal of Explosives&Propellants,2013,36(2):65-68.
[6]刘波,王琼林,刘少武,等.发射药钝感剂分布及迁移的研究进展[J].含能材料,2010,18(4):447-452.LIU Bo,WANG Qiong-lin,LIU Shao-wu,et al.Review on distribution and diffusion of deterrents in gun propellants[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2010,18(4):447-452.
[7]郭建忠,刘少武,张研.EI发射药的燃烧特性[J].火炸药学报,2012,35(5):87-90.GUO Jian-zhong,LIU shao-wu,ZHANG Yan.Research on the combustion characteristics of EI gun propellant[J].Chinese Journal of Explosives&Propellants,2012,35(5):87-90.
[8]姚月娟,刘少武,王锋,等.NG含量对改性单基药燃烧渐增性的影响[J].含能材料,2013,21(3):343-346.YAO Yue-juan,LIU Shao-wu,WANG Feng,et al.Effect of nitroglycerine content on combustion progressivity of modifiedsingle base propellant[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2013,21(3):343-346.
[9]罗运军,余永刚.增能钝感包覆火药的燃烧与弹道性能[J].弹道学报,1998,10(1):11-16.LUO Yun-jun,YU Yong-gang.The combustion and ballistic properties of energy-increased-coated propellant[J].Journal of Ballistics,1998,10(1):11-16.
[10]薛欢,何卫东,徐汉涛.改性高能太根发射药热分解与燃烧性能研究[J].含能材料,2015,23(8):791-795.XUE Huan,HE Wei-dong,XU Han-tao.Thermal decomposition and combustion performance of modified high-energy TEGNPropellant[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2015,23(8):791-795.
[11]杨建兴,贾永杰,刘毅,等.含RDX的叠氮硝胺发射药热分解与燃烧性能[J].含能材料,2012,20(2):180-183.YANG Jian-xing,JIA Yong-jie,LIU Yi,et al.Thermal decomposition and combustion performance of azidonitramine gun propellant containing RDX[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2012,20(2):180-183.