改性单基发射药的燃速模型
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摘要
为了研究以5/7单基发射药为基体药,硝化甘油(NG)为浸渍剂,聚酯为包复剂所组成的改性单基发射药的燃烧性能,对改性单基发射药的浸渍层分布,燃烧过程中药型尺寸及能量特性的变化进行了理论分析和实验验证。制备了NG浸渍量分别为10%和15%两个样品,进行了密闭爆发器试验、显微切片照相,用所建理论模型计算了试验结果。结果表明:NG浸渍量为15%时,火药力提高了10.14%,浸渍深度约0.168 mm,小于150 MPa,计算所得基体药u-p曲线高于改性单基发射药u-p曲线;大于150 MPa,两者u-p曲线重叠。当NG和聚酯在推进剂中的浸渍量分别为15%和2.5%时,在NG和聚酯浸渍量配比合适的条件下,改性单基发射药的火药力和燃烧渐增性在一定范围内可以做到同时增加。
In order to study combustion performance of the modified single base propellant composed of 5/7 single base propellant as base,NG as dipping reagent and polyester as coat regent,a theoretical analysis and an experimental validation for the dipping layer distribution in grain,the changes of grain size and energetic characteristic in combustion process have been studied.Two samples with 10% and 15% NG dipping quantity were prepared.Closed bomb test and micrograph observation of grain slices were done,and a calculation for the experimental results was carried out with the found model.Results show that the impetus of the sample containing 15% NG dipping reagent increases by 10.14%,and dipping depth is about 0.168 mm.The u-p curves of the single base propellant obtained by calculation is higher than that of the modified single base propellant before 150 MPa,and the u-p curves of both overlap with each other after 150 MPa.As long as the dipping reagent ratio of NG to polyester is appropriate,both impetus and progressive burning performance of the modified can get increasing within a certain range.Both impetus and progressive burning performance of the modified single base propellant can be increased within a certain range.
In order to study combustion performance of the modified single base propellant composed of 5/7 single base propellant as base,NG as dipping reagent and polyester as coat regent,a theoretical analysis and an experimental validation for the dipping layer distribution in grain,the changes of grain size and energetic characteristic in combustion process have been studied.Two samples with 10% and 15% NG dipping quantity were prepared.Closed bomb test and micrograph observation of grain slices were done,and a calculation for the experimental results was carried out with the found model.Results show that the impetus of the sample containing 15% NG dipping reagent increases by 10.14%,and dipping depth is about 0.168 mm.The u-p curves of the single base propellant obtained by calculation is higher than that of the modified single base propellant before 150 MPa,and the u-p curves of both overlap with each other after 150 MPa.As long as the dipping reagent ratio of NG to polyester is appropriate,both impetus and progressive burning performance of the modified can get increasing within a certain range.Both impetus and progressive burning performance of the modified single base propellant can be increased within a certain range.
引文
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[8]潘清,王琼林,王明,等.显微红外光谱法测定改性单基发射药中功能组分的浓度分布[J].火炸药学报,2009,32(3):79-82.PAN Qing,WANG Qiong-lin,WANG Ming,et al.Determination theconcentration profile of functional components in modified single basepropellant by FTIR microspectroscopy[J].Chinese Journal of Explo-sives&Propellants(Huozhayao Xuebao),2009,32(3):79-82.
[2]王琼林,李上文,王泽山.高分子钝感剂在发射药中的扩散性能研究[J].火炸药学报,2000,23(1):14-16.WANG Qiong-lin,LI Shang-wen,WANG Ze-shan.Research develop-ment for diffusion of deterrent in gun propellant[J].Chinese Journalof Explosives&Propellants(Huozhayao Xuebao),2000,23(1):14-16.
[3]梁勇,王琼林,于慧芳,等.增能钝感单基药的燃烧特性[J].含能材料,2007,15(6):597-599.LIANG Yong,WANG Qiong-lin,YU Hui-fang,et al.Combustion prop-erties of the energy-increased desensitized single-base propellant[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2007,15(6):597-599.
[4]刘波,王琼林,刘少武,等.提高改性单基药燃烧性能的研究[J].火炸药学报,2010,33(4):82-84.LIU Bo,WANG Qiong-lin,LIU Shao-wu,et al.Study on improvementof combustion performance of the modified single base propellant[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2010,33(4):82-84.
[5]熊立斌,应三九,罗付生.高效液相色谱法测定单基球扁药中钝感剂的含量[J].火炸药学报,2001,24(2):54-55.XIONG Li-bin,YING San-jiu,LUO Fu-sheng.Determination of the de-terrents in the single-base oblate spherical powder by high-performanceliquid chromatography[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2001,24(2):54-55.
[6]王琼林,刘少武,潘清,等.小尺寸枪药表面高分子钝感剂浓度分布测试研究[J].火炸药学报,2000,23(3):13-15.WANG Qiong-lin,LIU Shao-wu,PAN Qing,et al.Study on determina-tion of polymer deterrent concentration profile in small-sized gun pro-pellant[J].Chinese Journal of Explosives&Propellants(HuozhayaoXuebao),2000,23(3):13-15.
[7]张江波,张玉成,蒋树君,等.多层发射药内弹道模型及数值求解[J].火炸药学报,2009,32(3):83-85.ZHANG Jiang-bo,ZHANG Yu-cheng,JIANG Shu-ju,et al.The interi-or ballistic model and numerical simulation of multilayer charge[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2009,32(3):83-85.
[8]潘清,王琼林,王明,等.显微红外光谱法测定改性单基发射药中功能组分的浓度分布[J].火炸药学报,2009,32(3):79-82.PAN Qing,WANG Qiong-lin,WANG Ming,et al.Determination theconcentration profile of functional components in modified single basepropellant by FTIR microspectroscopy[J].Chinese Journal of Explo-sives&Propellants(Huozhayao Xuebao),2009,32(3):79-82.