Abstract Polymer-bonded explosives (PBXs) are often subjected to different external environmental conditions with various temperature and humidity during long-term storage, transportation, and usage process. The change in temperature and humidity will result in PBXs cracks formation and cause higher risk of explosion evolution when undergoing various stimulus including impact or friction. Herein, a self-healing polymer binder is developed to solve this problem. The fluoropolymer gel binder, a PVDF-co-HFP (copolymer of CH2-CF2 and CF2-CF(CF3))/EMIOTf (1-ethyl-3-methylimidazolium trifluoromethanesulfonate)/graphene ternary composite, has high density, high thermal conductivity, excellent interfacial adhesion property, and exhibits self-healing ability at room temperature. Highly filled PBXs composites with 95% of explosive 2, 6-diamino-3, 5-dinitropyrazine-1-oxide (LLM-105) and 5% of ternary composite are fabricated. The as-prepared PBX samples have high denotation parameter (7800 m s−1), low impact sensitivities (11–12 J), and low friction sensitivity (no sparks was observed even at friction energy load of 0.36 N). More importantly, our PBXs have effective crack healing ability within 48 h at room temperature. Therefore, the stability and safety of PBXs are improved through the self-healing polymer binder. Such PBXs can find widespread application in various military and civil fields.

中文翻译：

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自愈提高聚合物粘结炸药的稳定性和安全性

摘要 聚合物粘结炸药（PBXs）在长期储存、运输和使用过程中，经常受到不同温度和湿度的外部环境条件的影响。温度和湿度的变化会导致 PBX 裂缝形成，并在受到各种刺激（包括冲击或摩擦）时导致更高的爆炸演变风险。在此，开发了一种自修复聚合物粘合剂来解决这个问题。含氟聚合物凝胶粘合剂，PVDF-co-HFP（CH2-CF2和CF2-CF(CF3)的共聚物）/EMIOTf（1-乙基-3-甲基咪唑鎓三氟甲磺酸盐）/石墨烯三元复合材料，具有高密度、高导热性、具有优异的界面粘附性能，并在室温下表现出自愈能力。高填充 PBXs 复合材料含有 95% 的炸药 2, 6-diamino-3, 制造了 5-dinitropyrazine-1-oxide (LLM-105) 和 5% 的三元复合材料。所制备的 PBX 样品具有高外延参数 (7800 m s-1)、低冲击灵敏度 (11-12 J) 和低摩擦灵敏度（即使在 0.36 N 的摩擦能量负载下也没有观察到火花）。更重要的是，我们的 PBX 在室温下 48 小时内具有有效的裂纹愈合能力。因此，通过自修复聚合物粘合剂提高了 PBX 的稳定性和安全性。这种PBX可以在各种军事和民用领域得到广泛应用。我们的 PBX 在室温下 48 小时内具有有效的裂纹愈合能力。因此，通过自修复聚合物粘合剂提高了 PBX 的稳定性和安全性。这种PBX可以在各种军事和民用领域得到广泛应用。我们的 PBX 在室温下 48 小时内具有有效的裂纹愈合能力。因此，通过自修复聚合物粘合剂提高了 PBX 的稳定性和安全性。这种PBX可以在各种军事和民用领域得到广泛应用。