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首页> 外文期刊>Propellants, Explosives, Pyrotechnics >Application and Properties of Nano-sized RDX in CMDB Propellant with Low Solid Content
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Application and Properties of Nano-sized RDX in CMDB Propellant with Low Solid Content

机译：纳米尺寸RDX在CMDB推进剂中的应用与性能低固含量

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摘要

Composite modified double-base (CMDB) propellant, benefitting from the outstanding performances of high energy and low signature, has attracted increasing focus in the past decade. To improve the integrative performance, such as enhancing the mechanical property and decreasing the sensitivity, CMDB propellant with low solid content containing nano-sized RDX has been prepared. The microstructure, mechanical properties, sensitivity and combustion performance of the prepared propellant are studied. Results have shown that the interface of the CMDB propellant contained nano-sized RDX (N-CMDB) is more compact and the internal defects are less than those of the CMDB propellant with micro-sized RDX (M-CMDB). Compared with the maximum tensile strength (sigma(m)) and the corresponding elongation at maximum tensile strength (E-m) of M-CMDB, the sigma(m) values of N-CMDB are improved by 37.4% at +50 degrees C, 27.5% at +20 degrees C and 26.7% at -40 degrees C, and the E-m values are increased by 16.1%, 19.4% and 39.6%, separately. Moreover, the friction and impact sensitivities of N-CMDB propellant are decreased by 51.3% and 50.4%, respectively. In the range of 8-18MPa, the combustion performance of N-MCDB propellant has been demonstrated more attractive with higher burning rate coefficient (8.69210.950) and lower pressure exponent (0.3840.299). All these results lead us to believe that the usage of nano-sized explosives will contribute to improve the comprehensive performance of CMDB propellants and promote their application in weapon system.
机译：复合改装双基（CMDB）推进剂，受益于高能量和低签名的杰出性能，在过去十年中引起了越来越多的重点。为了提高整合性能，例如增强机械性能并降低敏感性，已经制备了含有纳米尺寸RDX的低固体含量的CMDB推进剂。研究了制备的推进剂的微观结构，机械性能，灵敏度和燃烧性能。结果表明，CMDB推进剂的界面包含纳米大小的RDX（N-CMDB）更紧凑，内部缺陷小于CMDB推进剂具有微尺寸RDX（M-CMDB）的缺陷。与最大拉伸强度（Sigma（M））相比和M-CMDB的最大拉伸强度（EM）的相应伸长率，N-CMDB的Sigma（M）值在+ 50℃下提高37.4％，27.5在-40℃下+ 20℃和26.7％的％，EM值分别增加16.1％，19.4％和39.6％。此外，N-CMDB推进剂的摩擦和冲击敏感性分别降低了51.3％和50.4％。在8-18MPa的范围内，N-MCDB推进剂的燃烧性能已经证明更高的燃烧速率系数（8.69210.950）和较低的压力指数（0.3840.299）更具吸引力。所有这些结果都导致我们相信纳米爆炸物的使用将有助于提高CMDB推进剂的综合性能，并促进其在武器系统中的应用。

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  • 作者

    Liu Jie; Ke Xiang; Xiao Lei; Hao Gazi; Rong Yuanbo; Jin Chengsu; Jiang Wei; Li Fengsheng;

  • 作者单位

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Natl Special Superfine Powder Engn Res Ctr China Nanjing 210094 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 爆炸物工业、火柴工业;
  • 关键词

    CMDB propellant; nano-sized RDX; mechanical properties; sensitivity; combustion performance;

    机译：CMDB推进剂;纳米大小的RDX;机械性能;敏感性;燃烧性能;

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