摘要
为了设计和制备弧厚小、燃烧时间短、渐增性好的新型发射药,以12.7 mm枪弹装药为对象,设计了梯形内嵌多方孔结构,采用直写成型工艺制备了外层弧厚不同、内嵌多方孔结构的梯形模块发射药。发射药长41 mm,内嵌方孔单边长为0.4 mm,内孔个数为3105。通过密闭爆发器试验,研究了模块发射药和制式药/模块发射药混合装药的定容燃烧性能。结果表明:打印发射药燃烧正常,在相对压力B>0.2后,外层弧厚为1.0 mm的模块发射药的动态燃烧活度相对外层弧厚为0.5 mm的下降较缓;当混合装药质量比为55时,分裂点后移,燃烧渐增性较好;打印发射药在爆发器内燃烧时间小于8 ms,与制式药燃烧时间相当,能满足小口径武器快速燃烧的要求。
In order to design and prepare a new type of propellant with small arc thickness,short combustion time,and good incremental properties,a trapezoidal structure embedded with multi-square holes was designed for a 12.7 mm cartridge charge.A trapezoidal module propellant with different outer arc thicknesses and embedded multi-square holes was prepared using direct writing molding technology.The length of the trapezoidal module propellant is 41 mm,the side length of a embedded square hole is 0.4 mm,and the number of inner holes is 3105.Constant volume combustion performances of the modular propellant and its mixed charges with standard propellants were studied through closed explosive tests.The results show that the combustion of the printed propellant was normal.After the relative pressure B reaches 0.2,the dynamic combustion activity of the module propellant with an outer arc thickness of 1.0 mm decreases more slowly compared to the module propellant with an outer arc thickness of 0.5 mm.When the mass ratio of the mixed charge is 55,the splitting point shifts backward and the combustion gradually increases.Combustion time of the printed propellant in the explosive device is less than 8 ms,which is equivalent to the combustion time of standard propellant and can meet the requirements of rapid combustion of small caliber weapons.
作者
吉小旺
凡文蕊
李纯志
龙义强
周伟良
肖乐勤
JI Xiaowang;FAN Wenrui;LI Chunzhi;LONG Yiqiang;ZHOU Weiliang;XIAO Leqin(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Jiangsu Nanjing,210094;Luzhou North Chemical Industry Co.,Ltd.,Sichuan Luzhou,646000;Sichuan Lin'gang Wuzhou Engineering Design Co.,Ltd.,Sichuan Luzhou,646000)
出处
《爆破器材》
CAS
CSCD
北大核心
2024年第5期21-27,共7页
Explosive Materials
关键词
内嵌多方孔
模块发射药
直写打印
燃烧性能
embedded with multi-square hole
module propellant
direct writing printing
combustion performance
