FOX-7与RDX混合比例对压装炸药慢速烤燃及冲击波感度的影响
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摘要
利用慢速烤燃试验和冲击波感度试验研究了FOX-7与RDX不同混合比例对炸药响应特性的影响。试验表明:当FOX-7的混入量(质量分数)低于72%时,炸药在慢速烤燃试验中的响应剧烈程度表现为爆轰反应,其临界起爆压力接近6.62 GPa;当FOX-7的混入量(质量分数)等于72%时,炸药在慢速烤燃试验中的响应剧烈程度由爆轰降至爆燃,其临界起爆压力升至7.27 GPa;当配方中完全采用FOX-7时,炸药在慢速烤燃试验中的响应剧烈程度由爆燃降至燃烧,临界起爆压力升至8.24 GPa。造成上述试验结果的原因可能是压装炸药在成型过程中因颗粒的破碎、重排作用使FOX-7对RDX形成包覆,进而改善了RDX材料点火增长速度快的本质特点。
Response properties of pressed explosive with different mixture ratio of FOX-7 and RDX were studied by small-scale cook-off bomb test and shock wave sensitivity test. Slow cook-off test shows detonation when the addition content of FOX-7 in the formula is less than 72%, and the critical initiation pressure is close to 6.62 GPa. When the addition content of FOX-7 reaches 72%, the slow cook-off response of the explosive transits from detonation to deflagration, and the critical initiation pressure increases to 7.27 GPa. When the addition content of FOX-7 was reached 100%, the slow baking response of the explosive degrades from deflagration to combustion, and the critical initiation pressure increases to 8.24 GPa. The reason for the test results above might be that FOX-7 was coated RDX because of particle breakage and rearrangement during the molding process, which improve the essential characteristics of rapid ignition growth of RDX materials.
Response properties of pressed explosive with different mixture ratio of FOX-7 and RDX were studied by small-scale cook-off bomb test and shock wave sensitivity test. Slow cook-off test shows detonation when the addition content of FOX-7 in the formula is less than 72%, and the critical initiation pressure is close to 6.62 GPa. When the addition content of FOX-7 reaches 72%, the slow cook-off response of the explosive transits from detonation to deflagration, and the critical initiation pressure increases to 7.27 GPa. When the addition content of FOX-7 was reached 100%, the slow baking response of the explosive degrades from deflagration to combustion, and the critical initiation pressure increases to 8.24 GPa. The reason for the test results above might be that FOX-7 was coated RDX because of particle breakage and rearrangement during the molding process, which improve the essential characteristics of rapid ignition growth of RDX materials.
引文
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[11] 王锋,刘国涛,张远波,等.含FOX-7发射药的低压燃烧性能及力学性能[J].含能材料,2013,21(4):522-526.WANG F, LIU G T, ZHANG Y B, et al. Combustion and mechanical performance of gun of propellant containing FOX-7 at low pressure[J]. Chinese Journal of Energetic Materials, 2013, 21 (4): 522-526.
[2] DANIEL M A, DAVIES P J, LOCHER I J. Fox-7 for Insensitive Boosters[R].DSTO-TR-2449.
[3] 周诚,黄新萍,周彦水,等.FOX-7的晶体结构和热分解特性[J].火炸药学报,2007,30(1):60-63.ZHOU C, HUANG X P, ZHOU Y S, et al.Crystal structure and thermal decomposition characteristics of FOX-7 [J]. Chinese Journal of Explosives & Propellants, 2007, 30 (1): 60-63.
[4] 付秋菠,舒远杰,黄奕刚,等.FOX-7的热分解动力学[J].四川兵工学报,2009,30(6):15-17.
[5] 付秋菠,舒远杰,黄奕刚,等.FOX-7晶体的制备和热性质[J].火炸药学报,2009,32(4):6-8.FU Q B, SHU Y J, HUANG Y G, et al. Preparation and thermal properties of FOX-7 [J]. Chinese Journal of Explosives & Propellants, 2009, 32 (4): 6-8.
[6] 南海,王晓峰. FOX-7的表面能研究[J].含能材料,2006,14(5):6-8.NAN H, WANG X F. Surface energy of FOX-7 [J]. Chinese Journal of Energetic Materials, 2006, 14 (5): 6-8.
[7] 周群,陈智群,郑朝民,等.FOX-7晶体形貌对感度的影响[J].火炸药学报,2014,37(5):67-69,76.ZHOU Q, CHEN Z Q, ZHENG C M, et al. Effect of morphology of FOX-7 crystals on its sensitivity [J]. Chinese Journal of Explosives & Propellants, 2014, 37 (5): 67-69,76.
[8] 徐抗震,宋纪蓉,赵凤起,等.1,1-二氨基-2,2-二硝基乙烯的比热容、热力学性质及绝热至爆时间研究[J].化学学报,2007,65(24):2827-2831.XU K Z, SONG J R, ZHAO F Q, et al. Special heat capacity, thermodynamic properties and adiabatic time-to-explosion of 1,1-diamino-2,2-dinitroethylene[J].ACTA Chimica Sinica, 2007,65(24): 2827-2831.
[9] 陈中娥,李忠友,姚南,等.FOX-7及含FOX-7的HTPB推进剂安全性能[J].含能材料,2010,18(3):316-319.CHEN Z E, LI Z Y, YAO N,et al. Safety property of FOX-7 and HTPB propellant with FOX-7 [J]. Chinese Journal of Energetic Materials, 2010, 18 (3): 316-319.
[10] 刘国涛,刘少武,于慧芳,等.含FOX-7发射药的燃烧性能[J].火炸药学报,2012,35(2):82-85.LIU G T, LIU S W, YU H F,et al. Combustion performance of propellant containing FOX-7 [J]. Chinese Journal of Explosives & Propellants, 2012, 35 (2): 82-85.
[11] 王锋,刘国涛,张远波,等.含FOX-7发射药的低压燃烧性能及力学性能[J].含能材料,2013,21(4):522-526.WANG F, LIU G T, ZHANG Y B, et al. Combustion and mechanical performance of gun of propellant containing FOX-7 at low pressure[J]. Chinese Journal of Energetic Materials, 2013, 21 (4): 522-526.