CHINESE JOURNAL OF ENERGETIC MATERIALS
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DAAF基不敏感PBX的热安全性
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作者单位:

1.中北大学环境与安全工程学院;2.山西省超细粉体工程技术研究中心

作者简介:

武碧栋(1985-),男,副教授,主要从事含能材料的制备、超细化与应用研究。e-mail:wubidong@nuc.edu.cn

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基金项目:

装备预研兵器工业联合基金;中北大学重点实验室开放研究基金资助项目 DXMBJJ2017-05装备预研兵器工业联合基金,中北大学重点实验室开放研究基金资助项目(DXMBJJ2017-05)


Thermal Safety of DAAF-Based Insensitive Polymer Bonded Explosives
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Affiliation:

1.School of Environmental and Safety Engineering, North University of China, Taiyuan 030051, China;2.Shanxi Province Ultrafine Powder Engineering Technology Research Center, Taiyuan 030051, China

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    摘要:

    为了研究3,3′-二氨基-4,4′-氧化偶氮呋咱(DAAF)基不敏感高聚物黏结炸药(PBX)的性能,采用水悬浮包覆技术分别制备出三种DAAF基PBX:DAAF/F2311(95/5)、DAAF/VitonA(95/5)、DAAF/EVA(95/5)。采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、差示扫描量热仪(DSC)和机械感度测试仪对样品的形貌结构、热分解特性以及撞击感度、摩擦感度进行测试分析,考察了样品的快速烤燃和慢速烤燃特性。结果表明:DAAF/F2311为表面光滑的类球状、直径约450 μm、包覆效果好,而DAAF/EVA和 DAAF/VitonA表面粗糙、包覆效果较差;DAAF/F2311比DAAF的放热峰温滞后了0.9 ℃(升温速率为10 ℃·min-1时),DAAF/F2311的活化能比原料DAAF提高了12.14 kJ·mol-1,热爆炸临界温度提高了8.29 ℃;按照GJB772A-1997方法测试三者的撞击感度H50均大于100 cm,摩擦感度均为0;快烤和慢烤试验的响应等级均为燃烧,满足不敏感弹药烤燃安全性要求。

    Abstract:

    In order to study the properties of 3,3'-diamino-4,4'-azoxyfurazan (DAAF)-based insensitive high polymer bonded explosives (PBX), three kinds of DAAF-based PBXs (DAAF/EVA (95/5), DAAF/Viton A (95/5) and DAAF/F2311 (95/5)) were prepared by water suspension coating technique. The morphology structure, crystal form, thermal decomposition characteristic and mechanical sensitivity were analyzed by scanning electron microscopy (SEM), X-ray diffractometer (XRD), differential scanning calorimeter (DSC), impact and friction sensitivity apparatus. The fast and slow cook-off behaviors were examined. The DAAF/F2311 was well coated which had a smooth spherical shape with 450 μm in diameter, while DAAF/EVA and DAAF/VitonA were poorly coated with rough surface. The exothermic peak temperature of DAAF/F2311 was 0.9 ℃ lower than that of DAAF (when the heating rate was 10 ℃·min-1). The activation energy and the critical temperature of thermal explosion of DAAF/F2311 was 12.14 kJ·mol-1 and 8.29 ℃ higher than that of the raw DAAF, respectively. According to the GJB772A-1997 method, the impact sensitivity H50 of the three DAAF-based PBXs were greater than 100 cm, and the friction sensitivity was 0. The response level of the fast and slow cook-off tests was burning, which satisfied the safety requirements for insensitive ammunition.

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引用本文

武碧栋,解佳妮,李旭阳,等. DAAF基不敏感PBX的热安全性[J].含能材料, 2019, 27(11):936-941. DOI:10.11943/CJEM2019164.
WU Bi-dong, XIE Jia-ni, LI Xu-yang, et al. Thermal Safety of DAAF-Based Insensitive Polymer Bonded Explosives[J]. Chinese Journal of Energetic Materials, 2019, 27(11):936-941. DOI:10.11943/CJEM2019164.

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历史
  • 收稿日期: 2019-06-11
  • 最后修改日期: 2019-07-05
  • 录用日期: 2019-09-05
  • 在线发布日期: 2019-11-27
  • 出版日期: 2019-11-25