摘要
为了解决现有球形发射药制备中存在的溶剂用量大、粒径不均一的问题,以双基吸收药为原料,采用剪切搓圆法制备大颗粒球形发射药。研究了溶棉质量比、搓丸刀间距、丸条直径对球形药质量的影响,采用密闭爆发器试验对成型、干燥后的样品进行了定容燃烧性能测试。结果表明,当溶棉质量比为0.4∶1.0、搓刀间距为0.4mm、丸条直径为3.8mm时,可得到粒径均一的球形颗粒,烘干后球形颗粒伸长度为1.033,颗粒密度可达1.680g/cm^3,堆积密度可达0.945g/cm^3,与内溶法制备的球形药的密度相当,密闭爆发器实验所得曲线表明制备的球形颗粒燃烧过程稳定,呈减面性。
To solve the problem of large solvent wastage and non-uniform particle size in the preparation of spherical propellant grain,the spherical gun propellant with large diameter was prepared through the shear-rounder method using double-base absorbent gun powder as raw material.The effect of mass ratio of solvent to cotton,the space between two pill-rolling knifes,and the diameter of the sticks on the quality of spherical gun propellant was studied.The constant-volume combustion performance of formed and dried samples was measured by the closed bomb test.The results show that when the mass ratio of solvent to cotton is 0.4,the space between two pill-rolling knifes is 0.4 mm and the diameter of the sticks is 3.8 mm,the particle size of spherical particle obtained is uniform,and the elongation,true density,and bulk density of the spherical gun propellant after drying are 1.033,1.680g/cm^3 and 0.945g/cm^3,respectively,similar to the density of the spherical gun propellant prepared by the internal dissolution method.The curves obtained from the closed bomb test show that the combustion process of spherical particle prepared is stable,revealing a characteristic of regressive burning.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2017年第3期98-101,共4页
Chinese Journal of Explosives & Propellants
基金
基金项目:新型结构含能材料四川省高校创新团队(15TD0014)
关键词
球形发射药
球形颗粒
剪切搓圆
密闭爆发器试验
定容燃烧性能
spherical gun propellant
spherical particle
shear-rounder
closed bomb test
constant volume combustion performance
