CHINESE JOURNAL OF ENERGETIC MATERIALS
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改性高能太根发射药热分解与燃烧性能研究
作者:
作者单位:

(南京理工大学化工学院, 江苏 南京 210094)

作者简介:

薛欢(1990-),男,硕士研究生,主要从事发射药配方及工艺研究。e-mail: xh5072@163.com 通信联系人: 何卫东(1962-),男,副研究员,主要从事发射药配方及装药设计研究。e-mail: hewedong@mail.njust.edu.cn

通讯作者:

何卫东(1962-),男,副研究员,主要从事发射药配方及装药设计研究。e-mail: hewedong@mail.njust.edu.cn

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Thermal Decomposition and Combustion Performance of Modified High-energy TEGN Propellant
Author:
Affiliation:

(School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

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    摘要:

    利用差示扫描量热法(DSC)、密闭爆发器试验研究了含黑索今(RDX)、聚醚聚氨酯弹性体材料(TPUE)的改性高能太根发射药热分解与燃烧特性,通过三维视频观察了改性高能太根药中止燃烧表面的形貌变化,分析了该类发射药的燃烧机理。结果表明:改性高能太根发射药的热分解过程主要分为由硝化棉、硝化甘油和硝化三乙二醇组成的基体的热分解和RDX的热分解;RDX颗粒的大小对改性太根药的实际燃烧过程产生较大影响。当RDX粒径为8.5 μm和45 μm时,两种改性太根发射药压力指数相当,其熔融和热分解过程主要发生在凝聚相区。当RDX粒径为90 μm时,部分RDX颗粒从太根药基体脱离进入气相区分解燃烧,导致发射药燃面增加,质量燃烧速度加快,燃烧规律性下降;发射药中少量TPUE的加入对发射药燃烧性能影响较小。

    Abstract:

    The thermal decompose characteristics and combustion performance of high-energy TEGN propellant that containing hexogeon(RDX) and thermoplastic polyurethane elastomer(TPUE) was analyzed by differential scanning calorimetry(DSC) and closed-bomb. The combustion mechanism of high-energy TEGN propellant was analyzed and the interrupted burning surfaces was observed by 3D microscope. The results show that the thermal decomposition process of high-energy TEGN propellant mainly contains the thermal decompose of basic body which consists of nitrocellulose(NC), nitroglycerine(NG), nitrotriglycol(TEGN) and the thermal decompose of RDX. The particle size of RDX has a great influence on the combustion process of the modified TEGN propellant. The melting and decomposition process occurs mainly in the condensed phase with the RDX particle size of 8.5 μm and 45 μm. As the RDX particle size increased to 90 μm, some RDX particles separates from the basic body and decomposes in the gas phase, the propellant burning surface and quality combustion speeded increased and the regularity of combustion reduced.

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引用本文

薛欢,何卫东,徐汉涛.改性高能太根发射药热分解与燃烧性能研究[J].含能材料, 2015, 23(8):791-795. DOI:10.11943/j. issn.1006-9941.2015.08.016.
XUE Huan, HE Wei-dong, XU Han-tao. Thermal Decomposition and Combustion Performance of Modified High-energy TEGN Propellant[J]. Chinese Journal of Energetic Materials, 2015, 23(8):791-795. DOI:10.11943/j. issn.1006-9941.2015.08.016.

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历史
  • 收稿日期: 2014-07-22
  • 最后修改日期: 2014-11-14
  • 录用日期: 2014-11-28
  • 在线发布日期: 2015-06-29
  • 出版日期: 2015-07-15