CAJ | 학술논문

用扫描电镜及激光粒度仪研究了PBX炸药在不同压制条件下的微观结构变化及粒度分布.结果表明,随着成型试件密度的增加,晶体的破碎、损伤情况加重;成型试件中HMX的平均粒径随着压力的增加而减小(压制前的33.05 μm到250 MPa压制后的16.92 μm);在相同压力条件下,热压(70℃)制品的密度更高,但晶体的破碎却更小,热压(70℃)制品中HMX的平均粒径要大于冷压(25℃)制品中HMX的平均粒径.
용소묘전경급격광립도의연구료PBX작약재불동압제조건하적미관결구변화급립도분포.결과표명,수착성형시건밀도적증가,정체적파쇄、손상정황가중;성형시건중HMX적평균립경수착압력적증가이감소(압제전적33.05 μm도250 MPa압제후적16.92 μm);재상동압력조건하,열압(70℃)제품적밀도경고,단정체적파쇄각경소,열압(70℃)제품중HMX적평균립경요대우냉압(25℃)제품중HMX적평균립경.
The cracking and damage of polymer bonded explosives (PBX) based on HMX pressed under 50-250 MPa were investigated by SEM. The particle size distributions of HMX were measured by a 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 are changed from 33.04 μm before pressing to 16.92 μm under 250 MPa pressing. Under the condition of same pressure, the densities of shaping samples pressed at 70℃ are higher than those of samples pressed at 25℃, but the HMX cracking decrease and the mean particle diameters of HMX pressed at 70℃ are larger than those of samples pressed at 25℃.