The effects of micro‐encapsulation technology on the thermal safety of boron‐containing emulsion explosives were experimentally studied. Micro‐structures of additives, demulsification states and thermal characteristics of boron‐containing emulsion explosives were characterized by the laser particle size analyzer, scanning electron microscope and thermal analysis equipment, respectively. The storage experiments showed that emulsion explosives with boron powders would be demulsified in a short time, while those with micro‐encapsulated boron powders were not demulsified and had good surface morphologies and structures. The results of TG‐DSC experiments showed that the thermal stability of emulsion explosive with polymethyl methacrylate (PMMA) micro‐encapsulated boron powders was higher than that of other samples with boron powders, and the order of thermal stability was as follows: PMMA/Boron sensitized emulsion explosive > Paraffin/Boron‐Glass microspheres (GMs) sensitized emulsion explosive > Boron‐GMs sensitized emulsion explosive. The experimental data of accelerating rate calorimeter (ARC) tests showed that the addition of boron powders would significantly increase the risk of thermal explosion of emulsion explosives under the adiabatic condition, and PMMA micro‐encapsulation for boron powders could largely reduce the thermal explosion risk of boron‐containing emulsion explosives compared with paraffin coating. The coating effect of micro‐encapsulation technology was much better than that of traditional paraffin coating method, and the compatibility and thermal safety of boron‐containing emulsion explosives were also improved.

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微囊化处理对含硼粉末高能乳化炸药热安全性的影响

实验研究了微囊化技术对含硼乳化炸药热安全性的影响。分别通过激光粒度分析仪，扫描电子显微镜和热分析设备对添加剂的微观结构，破乳状态和含硼乳化炸药的热特性进行了表征。储存实验表明，含硼粉末的乳化炸药会在短时间内破乳，而含微囊化硼粉末的乳化炸药不会破乳，并且具有良好的表面形态和结构。TG-DSC实验结果表明，聚甲基丙烯酸甲酯（PMMA）微囊化硼粉乳化炸药的热稳定性高于其他含硼粉样品。热稳定性的顺序如下：PMMA /硼敏化乳化炸药>石蜡/硼玻璃微球（GMs）敏化乳化炸药>硼GMs敏化乳化炸药。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。PMMA /硼敏化乳液炸药>石蜡/硼玻璃微球（GMs）敏化乳液炸药>硼GMs敏化乳液炸药。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。PMMA /硼敏化乳液炸药>石蜡/硼玻璃微球（GMs）敏化乳液炸药>硼GMs敏化乳液炸药。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。石蜡/硼玻璃微球（GMs）敏化的乳化炸药>硼-GMs敏化的乳化炸药。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。石蜡/硼玻璃微球（GMs）敏化的乳化炸药>硼-GMs敏化的乳化炸药。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。加速量热仪（ARC）的实验数据表明，在绝热条件下添加硼粉会显着增加乳化炸药热爆炸的风险，而PMMA微囊化硼粉可以大大降低乳化炸药的热爆炸风险。与石蜡涂层相比，含硼乳化炸药。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。与石蜡涂层相比，微粉和PMMA硼粉微囊化可大大降低含硼乳化炸药的热爆炸风险。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。与石蜡涂层相比，微粉和PMMA硼粉微囊化可大大降低含硼乳化炸药的热爆炸风险。微囊化技术的涂层效果比传统的石蜡涂层方法要好得多，含硼乳化炸药的相容性和热安全性也得到了改善。