摘要
基于高寒及负压环境下乳化炸药的热力学和动力学平衡破坏影响及炸药起爆与爆轰的现象,本文采用高聚物发泡颗粒(简称VACPM)和可发性聚苯乙烯颗粒(简称EPS)作为物理敏化剂,应用于乳化炸药的物理敏化技术研究,研究颗粒发泡尺寸与炸药爆速及起爆感度的初步关系。结果表明:EPS颗粒敏化炸药具有雷管感度,爆速为1986~2473 m/s;高聚物发泡颗粒尺寸为8.5~100μm,敏化的乳化炸药爆速可达到4630~5252 m/s;VACPM微球的制作技术从材料选择到工艺优化已较为成熟,其发泡尺寸、均匀度、真密度等关键性能参数和经济性能具有更大的调整空间,相较于EPS颗粒,更适用于乳化炸药的生产和应用。
Based on the thermodynamic and kinetic equilibrium disruption effects of emulsion explosives under alpine and negative pressure environment,as well as the initiation and detonation characteristics of the explosive,this study adopts polymer foaming particles(referred to as VACPM)and expandable polystyrene particles(referred to as EPS)as physical sensitizer to research the technology of physical sensitization for emulsion explosives.This study investigates the preliminary relationship among particle foaming size,the detonation velocity,as well as initiation sensitivity of explosives.The results indicate that EPS sensitizing explosives have detonator sensitivity,and the detonation velocity is from 1986 m/s to 2473 m/s;when the size of the polymer foam particles sensitizer is from 8.5μm to 100μm,the detonation velocity ranges from 4630 m/s to 5252 m/s.The manufacturing technology of VACPM,from material selection to process optimization,has become quite mature.And its key properties such as foaming size,uniformity and true density,as well as economic performance,still have greater room for adjustment.Compared with EPS,the VACPM is more suitable for the production and application of emulsion explosives.
作者
陈化南
郭玉琪
杨薇
孟凡宝
王小红
CHEN Huanan;GUO Yuqi;YANG Wei;MENG Fanbao;WANG Xiaohong(Chengyuan Mining Development Co.,Ltd.,Liaoyang 111000,China;School of Mechanics and Aerospce Engineering,Dalian University of Technology,Dalian 116023,China)
出处
《煤矿爆破》
2025年第4期16-19,共4页
Coal Mine Blasting
基金
国家自然科学基金项目(12172084)。
