摘要
以HMX为基的高聚物粘结炸药(PBX)为对象,研究了在不同压制条件下HMX的微观结构的演变。为评估压制参数对微结构的影响,在50t压机上分别采用50,100,250MPa压力压制Φ20mm×5mm的药柱,采用深度腐蚀方法,去掉表面粘结剂,并用扫描电镜及激光粒度仪测试表征。结果表明:压力越大,颗粒的破碎及孪晶的形成现象越严重,从而改变了晶体颗粒的粒度分布,压制前平均粒径为34.37μm,经50,100,250MPa压力压制后平均粒径分别变为31.16,27.90,26.37μm。
The mierostructural changes of Φ20mm×5mm mm polymer bonded explosives （PBX） sample based on HMX pressed at 50 -250 MPa were investigated by scanning electron microscopy（ SEM ）. The particle size distributions of HMX were measured by laser particle size analyzer. Results show that as the porosity in samples reduces, the crystal twinning and cracking in pressed PBX increases obviously. The mean particle diameters of HMX is 34. 37μm before being pressed, and after being pressed under 50,100,250 MPa, the mean particle diameters of HMX are 31.16μm , 27.90 μm and 26.37 μm, respectively.
出处
《含能材料》
EI
CAS
CSCD
2008年第2期188-190,共3页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院化工材料研究所所长基金(62601040110)
关键词
材料科学
高聚物粘结炸药
微观结构
压制参数
粒度分布
materials science
polymer bonded explosive （PBX）
microstructure
pressing parameter
particle size distribution
