NC/DIANP共混体系的宏微观力学性能
|
摘要
为研究硝化甘油/1,5-二叠氮-3-硝基氮杂戊烷(NC/DIANP)共混体系宏观力学性能表现的微观机理实质,用动态热机械分析和单向拉伸实验对比研究了NC/DIANP和NC/NG共混体系的动态和静态力学性能,并在此基础上建立了两种共混体系模型,通过分子动力学模拟分析了微观作用机理。结果表明,DIANP取代NG后,共混体系的自由体积增加且氢键作用力和范德华力减弱,NC分子链链段运动能力增强,共混体系α松弛峰温由75.6℃降至53.5℃、力学损耗强度由0.567增至0.778,β松弛峰温由-23.7℃降至-25.0℃、力学损耗强度由0.126增至0.127,-40、20和50℃的最大拉伸强度由15.31、12.11和5.13M Pa分别减小至14.24、10.08和1.90M Pa,最大伸长率由1.78%、8.08%和36.01%分别增至2.91%、24.56%和61.51%。
In order to explore inherent factors that determine the mechanical properties of nitrocellulose/1,5-diazido-3-nitrazapentane(NC/DIANP) blend, the dynamic and static mechanical properties of NC/DIANP and nitrocellulose/nitroglycerine(NC/NG) blends were investigated by dynamic mechanical analysis and uniaxial tension test. T he models of NC/DIAN P and NC/NG blends were built, and the mechanism in change of mechanical properties was further evaluated by using molecular dynamics simulation. The results showthat when replacing NC with DIANP,the free volume increases,both hydrogen bond and Van der waals force of NC decrease, and the mobility of N C molecular chains strengthen, which makes the α-transition peak temperature decrease from 75.6 to 53.5℃ and the mechanical loss peak value increase from 0.567 to 0.778, the β-transition peak temperature decrease from-23.7 to-25.0℃ and the mechanical loss peak value increase from 0. 126 to 0.127. Meantime, the maximum tensile strength decrease from 15.31, 12.11 and 5.13 MPa to 14.24,10.08 and 1.90 M Pa with maximum elongation rate increase from 1.78%, 8.08%, 36.01% to 2.91%, 24.56%, 61.51% at-40, 20 and 50℃, respectively.
In order to explore inherent factors that determine the mechanical properties of nitrocellulose/1,5-diazido-3-nitrazapentane(NC/DIANP) blend, the dynamic and static mechanical properties of NC/DIANP and nitrocellulose/nitroglycerine(NC/NG) blends were investigated by dynamic mechanical analysis and uniaxial tension test. T he models of NC/DIAN P and NC/NG blends were built, and the mechanism in change of mechanical properties was further evaluated by using molecular dynamics simulation. The results showthat when replacing NC with DIANP,the free volume increases,both hydrogen bond and Van der waals force of NC decrease, and the mobility of N C molecular chains strengthen, which makes the α-transition peak temperature decrease from 75.6 to 53.5℃ and the mechanical loss peak value increase from 0.567 to 0.778, the β-transition peak temperature decrease from-23.7 to-25.0℃ and the mechanical loss peak value increase from 0. 126 to 0.127. Meantime, the maximum tensile strength decrease from 15.31, 12.11 and 5.13 MPa to 14.24,10.08 and 1.90 M Pa with maximum elongation rate increase from 1.78%, 8.08%, 36.01% to 2.91%, 24.56%, 61.51% at-40, 20 and 50℃, respectively.
引文
[1]付小龙,樊学忠.钝感推进剂配方研究及发展趋势[J].火炸药学报,2014,37(5):1-8.FU Xiao-long,FAN Xue-zhong.R esearch and development trends of insensitive solid propellant formalation[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2014,37(5):1-8.
[2]张琼方,张教强.钝感固体推进剂的研制与进展[J].含能材料,2004,12(6):371-375.Z HAN G Q iong-fang,Z HAN G Jiao-qiang.R esearch and development of insensitive solid propellants[J].C hinese Journal of Energetic Materials,2004,12(6):371-375.
[3]Arthus P.Energetic polymers and plasticisers for explosive formulaions-a reviewof recent advances[M].C omonwealeh:D STO,2000.
[4]姬月萍,李普瑞,汪伟,等.含能增塑剂的研究现状及发展[J].火炸药学报,2005,28(4):47-51.JI Yue-ping,LI Pu-rui,WANG Wei,et al.A reviewof recent advances of energetic plasticizers[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2005,28(4):47-51.
[5]王静刚,李俊贤,张玉清.叠氮增塑剂研究进展[J].化学推进剂与高分子材料,2008,6(3):10-19.WAN G Jing-gang,LI Jun-xian,Z HAN G Yu-qing.R esearch advance of azido plasticizers[J].C hemical Propellants&Polymeric Materials,2008,6(3):10-19.
[6]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.YAN G Jian-xing,JIA Yong-jie,LIU Yi,et al.Thermal decomposition and combustion performance of azidonitramine gun propellant containing R D X[J].C hinese Journal of Energetic Materials,2012,20(2):180-183.
[7]黄振亚,贾永杰,崔鹏腾,等.叠氮硝胺发射药的燃烧性能调控技术[J].含能材料,2013,21(6):795-799.HU AN G Z hen-ya,JIA Yong-jie,C U I Peng-teng,et al.Modulating technology for combustion performance of azidonitramine gun propellant[J].C hinese Journal of Energetic Materials,2013,21(6):795-799.
[8]杨建兴,崔鹏腾,贾永杰,等.1,5-二叠氮基-3-硝基氮杂戊烷对硝化棉的溶塑作用[J].火炸药学报,2011,34(2):84-86,90.YAN G Jian-xing,C U I Peng-teng,JIA Yong-jie,et al.Plastication of 1,5-diazido-3-nitrazapentane on nitrocellulose[J].C hinese Journal of Explosives&Propellants(Huozhayao Xuebao),2011,34(2):84-86,90.
[9]齐晓飞,张晓宏,郭昕,等.NC/DINAP共混体系力学性能的分子动力学模拟计算[J].火炸药学报,2013,36(2):57-61,81.Q I Xiao-fei,Z HAN G Xiao-hong,GU O Xin,et al.Molecular dynamics simulation on mechanical properties of N C/D IAN P blends[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2013,36(2):57-61,81.
[10]齐晓飞,严启龙,刘萌,等.DIANP对NC溶塑作用的实验与模拟[J].含能材料,2016,24(3):269-273.Q I Xiao-fei,YAN Q i-long,LIU Meng,et al.Experiment and simulation on plastication of N C by D I-AN P[J].C hinese Journal of Energetic Materials,2016,24(3):269-273.
[11]齐晓飞,闫宁,严启龙,等.硝化纤维素/增塑剂共混体系相结构的介观动力学模拟[J].火炸药学报,2017,40(6):101-107.Q I Xiao-fei,YAN N ing,YAN Q i-long,et al.Mesoscopic dynamic simulations on the phase structure of nitrocellulose/plasticizers blends[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2017,40(6):101-107.
[12]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.Q I Xiao-fei,Z HAN G Xiao-hong,YAN Q i-long,et al.Temperature dependence of mechanical state for nitrocellulose/nitroglycerin blend[J].Journal of Propulsion Technology,2016,37(7):1387-1392.
[13]刘子如,张沛.增塑剂对双基推进剂动态力学性能的影响[J].固体火箭技术,2005,28(4):276-279.LIU Z i-ru,Z HAN G Pei.Influence of plasticizers on dynamic mechanical properties of double base propellants[J].Journal of Solid Rocket Technology,2005,28(4):276-279.
[14]姚楠,刘子如,王江宁,等.RDX含量对改性双基推进剂动态力学性能的影响[J].推进技术,2008,29(4):498-501.YAO N an,LIU Z i-ru,WAN G Jiang-ning,et al.Effect of R D X content on dynamic mechanical properties of modified double-base propellants[J].Journal of Propulsion Technology,2008,29(4):498-501.
[15]齐晓飞,张晓宏,李吉祯,等.NC/NG共混体系的分子动力学模拟研究[J].兵工学报,2013,34(1):93-99.Q I Xiao-fei,Z HAN G Xiao-hong,LI Ji-zhen,et al.Molecular dynamics simulation of N C/N G blends[J].A cta A mamentarii,2013,34(1):93-99.
[16]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.Q I Xiao-fei,Z HAN G Xiao-hong,Z HAN G Wei,et al.Study on plasticizing process of N C/N G blends[J].Journal of Propulsion Technology,2013,34(6):843-848.
[17]Fu X L,Fan X Z,Ju X H,et al.Molecular dynamic simulations on the interaction between an HTPE polymer and energetic plasticizers in a solid propellant[J].Rsc A dvances,2015,5(65):52844-52851.
[18]Zhao Y,Zhang X,Zhang W,et al.Simulation and Experimental on the Solvation interaction between the GAPmatrix and insensitive energetic plasticizers in solid propellants[J].Journal of Physical C hemistry A,2016,120(5):765-770.
[19]Steiner T,Desiraju G R.Distinction between the weak hydrogen bond and the van der Waals interaction[J].C hemical C ommunications,1998,8(8):891-892.
[2]张琼方,张教强.钝感固体推进剂的研制与进展[J].含能材料,2004,12(6):371-375.Z HAN G Q iong-fang,Z HAN G Jiao-qiang.R esearch and development of insensitive solid propellants[J].C hinese Journal of Energetic Materials,2004,12(6):371-375.
[3]Arthus P.Energetic polymers and plasticisers for explosive formulaions-a reviewof recent advances[M].C omonwealeh:D STO,2000.
[4]姬月萍,李普瑞,汪伟,等.含能增塑剂的研究现状及发展[J].火炸药学报,2005,28(4):47-51.JI Yue-ping,LI Pu-rui,WANG Wei,et al.A reviewof recent advances of energetic plasticizers[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2005,28(4):47-51.
[5]王静刚,李俊贤,张玉清.叠氮增塑剂研究进展[J].化学推进剂与高分子材料,2008,6(3):10-19.WAN G Jing-gang,LI Jun-xian,Z HAN G Yu-qing.R esearch advance of azido plasticizers[J].C hemical Propellants&Polymeric Materials,2008,6(3):10-19.
[6]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.YAN G Jian-xing,JIA Yong-jie,LIU Yi,et al.Thermal decomposition and combustion performance of azidonitramine gun propellant containing R D X[J].C hinese Journal of Energetic Materials,2012,20(2):180-183.
[7]黄振亚,贾永杰,崔鹏腾,等.叠氮硝胺发射药的燃烧性能调控技术[J].含能材料,2013,21(6):795-799.HU AN G Z hen-ya,JIA Yong-jie,C U I Peng-teng,et al.Modulating technology for combustion performance of azidonitramine gun propellant[J].C hinese Journal of Energetic Materials,2013,21(6):795-799.
[8]杨建兴,崔鹏腾,贾永杰,等.1,5-二叠氮基-3-硝基氮杂戊烷对硝化棉的溶塑作用[J].火炸药学报,2011,34(2):84-86,90.YAN G Jian-xing,C U I Peng-teng,JIA Yong-jie,et al.Plastication of 1,5-diazido-3-nitrazapentane on nitrocellulose[J].C hinese Journal of Explosives&Propellants(Huozhayao Xuebao),2011,34(2):84-86,90.
[9]齐晓飞,张晓宏,郭昕,等.NC/DINAP共混体系力学性能的分子动力学模拟计算[J].火炸药学报,2013,36(2):57-61,81.Q I Xiao-fei,Z HAN G Xiao-hong,GU O Xin,et al.Molecular dynamics simulation on mechanical properties of N C/D IAN P blends[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2013,36(2):57-61,81.
[10]齐晓飞,严启龙,刘萌,等.DIANP对NC溶塑作用的实验与模拟[J].含能材料,2016,24(3):269-273.Q I Xiao-fei,YAN Q i-long,LIU Meng,et al.Experiment and simulation on plastication of N C by D I-AN P[J].C hinese Journal of Energetic Materials,2016,24(3):269-273.
[11]齐晓飞,闫宁,严启龙,等.硝化纤维素/增塑剂共混体系相结构的介观动力学模拟[J].火炸药学报,2017,40(6):101-107.Q I Xiao-fei,YAN N ing,YAN Q i-long,et al.Mesoscopic dynamic simulations on the phase structure of nitrocellulose/plasticizers blends[J].C hinese Journal of Explosives&Propellants(Huoz hayao Xuebao),2017,40(6):101-107.
[12]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.Q I Xiao-fei,Z HAN G Xiao-hong,YAN Q i-long,et al.Temperature dependence of mechanical state for nitrocellulose/nitroglycerin blend[J].Journal of Propulsion Technology,2016,37(7):1387-1392.
[13]刘子如,张沛.增塑剂对双基推进剂动态力学性能的影响[J].固体火箭技术,2005,28(4):276-279.LIU Z i-ru,Z HAN G Pei.Influence of plasticizers on dynamic mechanical properties of double base propellants[J].Journal of Solid Rocket Technology,2005,28(4):276-279.
[14]姚楠,刘子如,王江宁,等.RDX含量对改性双基推进剂动态力学性能的影响[J].推进技术,2008,29(4):498-501.YAO N an,LIU Z i-ru,WAN G Jiang-ning,et al.Effect of R D X content on dynamic mechanical properties of modified double-base propellants[J].Journal of Propulsion Technology,2008,29(4):498-501.
[15]齐晓飞,张晓宏,李吉祯,等.NC/NG共混体系的分子动力学模拟研究[J].兵工学报,2013,34(1):93-99.Q I Xiao-fei,Z HAN G Xiao-hong,LI Ji-zhen,et al.Molecular dynamics simulation of N C/N G blends[J].A cta A mamentarii,2013,34(1):93-99.
[16]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.Q I Xiao-fei,Z HAN G Xiao-hong,Z HAN G Wei,et al.Study on plasticizing process of N C/N G blends[J].Journal of Propulsion Technology,2013,34(6):843-848.
[17]Fu X L,Fan X Z,Ju X H,et al.Molecular dynamic simulations on the interaction between an HTPE polymer and energetic plasticizers in a solid propellant[J].Rsc A dvances,2015,5(65):52844-52851.
[18]Zhao Y,Zhang X,Zhang W,et al.Simulation and Experimental on the Solvation interaction between the GAPmatrix and insensitive energetic plasticizers in solid propellants[J].Journal of Physical C hemistry A,2016,120(5):765-770.
[19]Steiner T,Desiraju G R.Distinction between the weak hydrogen bond and the van der Waals interaction[J].C hemical C ommunications,1998,8(8):891-892.