研究了ε-六硝基六氮杂异伍兹烷(ε-HNIW)/F2311界面结构的力学行为. 采用分子动力学(MD)方法,在298~423 K 温度范围内以及NVT系综和COMPASS力场下,对F2311与ε-HNIW (110)晶面所构成PBX界面结构的各种力学性能进行模拟计算. 结果表明,温度达到348 K后,ε-HNIW/F2311界面结构比内层ε-HNIW形状变化(G)和体积变化(K)都变得相对容易,弹性增强的同时可以有效地分散应力,有利于PBX的加工;进一步分析K/G表明,ε-HNIW/F2311界面结构在298~373 K内成型性较好,尤其在348 K左右时最适合进行PBX的压制成型
References
[1]
Swenson R J. Comments on virial theorems for bounded systems[J]. American Journal of Physics, 1983,51(10):940-942.
[2]
Parrinello M, Rahman A. Strain fluctuations and elastic constants[J]. Journal of Chemical Physics, 1982,76(5):2662-2666.
[3]
Theodorou D N, Suter U W. Atomistic modeling of mechanical properties of polymeric glasses[J]. Macromolecules, 1986,19(1):139-154.
[4]
Watt J P, Davies G F, O\'Connell R J. The elastic properties of composite materials[J]. Reviews of Geophysics, 1976,14(4):541-563.
[5]
周红萍,庞海燕,温茂萍,等.3种黏结剂材料的力学性能比较研究[J].材料导报,2009,23(12):34-36. Zhou Hongping, Pang Haiyan, Wen Maoping, et al. Comparative studies on mechanical properties of three kinds of binders[J]. Materials Review, 2009,23(12): 34-36. (in Chinese)
[6]
梁华琼,韩超,雍炼,等.高聚物黏结炸药的压制成型性[J].火炸药学报,2010,33(4):44-48. Liang Huaqiong, Han Chao, Yong Lian, et al. Pressing mechanism of polymer-bonded explosive[J]. Chinese Journal of Explosives & Propellants, 2010,33(4):44-48. (in Chinese)
[7]
Xiao Jijun, Zhu Wei, Ma Xiufang, et al. A novel model for the molecular dynamics simulation study on mechanical properties of HMX/F2311 polymer-bonded explosive[J]. Molecular Simulation, 2008,34(8):775-779.
[8]
Ma Xiufang, Xiao Jijun, Huang Hui, et al. Simulative calculation on mechanical property, binding energy and detonation property of TATB fluorine-polymer PBX[J]. Chinese Journal of Chemistry, 2006,24(4):473-477.
[9]
Zhu Wei, Xiao Jijun, Zhu Weihua, et al. Molecular dynamic simulations of RDX and RDX-based plastic-bonded explosives[J]. Journal of Hazardous Materials, 2009,164(2-3):1082-1088.
[10]
Qiu Ling, Zhu Weihua, Xiao Jijun, et al. Molecular dynamic simulations of trans-1,4,5,8-tetranitro-1,4,5,8-tetraazadecalin-based PBXs[J]. Journal of Physical Chemistry B, 2007, 111(7): 1559-1566.
[11]
欧育湘,孟征,刘进全.高能量密度化合物CL-20应用研究进展[J].化工进展,2007,26(12):1690-1694. Ou Yuxiang, Meng Zheng, Liu Jinquan. Review of the development of application technologies of CL-20[J]. Chemical Industry and Engineering Progress, 2007,26(12):1690-1694. (in Chinese)
[12]
Sun H. COMPASS: an abinitio forcefield optimized for condensed-phase applications overview with details on alkane and benzene compounds[J]. Journal of Physical Chemistry B, 1998,102(38):7338-7364.
[13]
Ewald P P. Evaluation of optical and electrostatic lattice potentials[J]. Annals of Physics, 1921,64(3):235-287.
[14]
赵信岐,施倪承.ε-六硝基六氮杂异伍兹烷的晶体结构[J].科学通报,1995,40(23):2158-2160. Zhao Xinqi, Shi Nicheng. The crystal structure of ε-hexanitrohexaazaisowurtzitane[J]. Chinese Science Bulletin, 1995,40(23):2158-2160. (in Chinese)
[15]
Andersen H C. Molecular dynamics simulations at constant pressure and/or temperature[J]. Journal of Chemical Physics, 1980,72(4):2374-2383.