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超细CL-20/HMX共晶的制备、表征及其与推进剂组分的相容性
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1.航天化学动力技术重点实验室,湖北 襄阳441003;2.湖北航天化学技术研究所;3.湖北航鹏化学动力科技有限责任公司

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国防科技项目基金 0326007国防科技项目基金(0326007)


Preparation, Characterization of Ultrafine CL-20/HMX Cocrystal Explosive and Its Compatibility With the Components of Propellants
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1.Science and Technology on Aerospace Chemical Power Laboratory,Xiangyang 441003, China;2.Hubei Institute of Aerospace Chemotechnology, Xiangyang 441003,China;3.Hubei Hangpeng Chemical Power Techonology Co., Ltd, Xiangyang 441003,China

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    摘要:

    通过加入微量溶剂,采用超高效混合技术,在70 g的加速度条件下反应30 min制备得到摩尔比为2∶1的超细六硝基六氮杂异伍兹烷与奥克托今(CL-20/HMX)共晶,通过X射线粉末衍射、差示扫描量热法鉴定了CL-20/HMX共晶的形成,并对其形貌、粒度、感度等进行了表征测试。结果表明:制备的超细CL-20/HMX共晶纯度为92.6%,共晶炸药呈规则块状、表面光滑、粒径小于1 μm、粒度分布均匀,其X射线衍射图在11.558°,13.264°,18.601°,24.474°,33.785°,36.269°处出现新的较强的衍射峰。超细CL-20/HMX共晶放热分解过程中只有一个放热分解峰,其放热峰温为248.3 ℃,其分解放热量(2192.1 J·g-1),显著高于相同摩尔比的物理混合物(1327.3 J·g-1)。按照GJB772A-1997《炸药试验方法》测得的摩擦感度比原料CL-20降低了16%,特性落高比原料CL-20提高28.6 cm,比原料HMX提高11.5 cm,形成共晶后安全性能更高。采用DSC法研究了超细CL-20/HMX共晶与推进剂常用组分均聚叠氮缩水甘油醚(HGAP)、硝化甘油/1,2,4-丁三醇三硝酸酯混合物(NG/BTTN)、缩二脲三异氰酸酯(N-100)、高氯酸铵(AP)、铝粉(Al)的相容性,发现超细CL-20/HMX共晶与NG/BTTN、AP、Al的相容性较好,与HGAP、N-100不相容。

    Abstract:

    Ultrafine hexanitrohexaazaisowurtzitane/cyclotetramethylene tetranitramine(CL-20/HMX)cocrystal explosive was prepared by ultra-highly efficient mixing method. X-ray diffraction and differential scanning calorimetry were utilized to determine whether the cocrystal explosive was prepared. The crystal morphology, particle size, sensitivity of cocrystal explosive were characterized. The prepared samples were regular block-like ultrafine CL-20/HMX cocrystal explosives with uniform particle size of less than 1 μm, which appeared new stronger diffraction peaks at 11.558°, 13.264°, 18.601°, 24.474°, 33.785°, 36.269°. The purity of the CL-20/HMX cocrystal explosive was 92.6%. The thermal decomposition process of cocrystal explosives had only one exothermic decomposition stage with peak temperatures of 248.3 ℃. The enthalpy for the exothermic decomposition of the cocrystal (2912.1 J·g-1) was remarkable higher than that of the physical mixture of CL-20 and HMX (1327.3 J·g-1). According to GJB772A-1997《The explosive test method》, the friction sensitivity of CL-20/HMX cocrystal explosive was 84%, which was decreased by 16% compared with original CL-20, the characteristic height of the cocrystal was increased by 28.6 cm and 11.5 cm compared with original CL-20 and HMX, respectively. The compatibility of CL-20/HMX cocrystal with components of solid propellant, including hydroxyl-terminated glycidylazide polymer(HGAP), nitroglycerin/1,2,4-butanetriol trinitrate (NG/BTTN), triisocyanate(N-100), ammonium perchlorate(AP), aluminum powder(Al powder) were investigated by differential scanning calorimetry(DSC). The CL-20/HMX cocrystal was compatible with NG/BTTN, AP and Al powder, while incompatible with HGAP, N-100.

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引用本文

任晓婷,卢艳华,陆志猛,等.超细CL-20/HMX共晶的制备、表征及其与推进剂组分的相容性[J].含能材料,2020,28(2):137-144. DOI:10.11943/CJEM2019127.
REN Xiao-ting, LU Yan-hua, LU Zhi-meng, et al. Preparation, Characterization of Ultrafine CL-20/HMX Cocrystal Explosive and Its Compatibility With the Components of Propellants[J]. Chinese Journal of Energetic Materials, 2020, 28(2):137-144. DOI:10.11943/CJEM2019127.

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  • 收稿日期: 2019-05-07
  • 最后修改日期: 2019-10-27
  • 录用日期: 2019-07-19
  • 在线发布日期: 2019-09-11
  • 出版日期: 2020-02-27