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Combustion promotion and agglomeration reduction of the composite propellant using graphene

机译：使用石墨烯的复合推进剂的燃烧促进和凝聚降低

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摘要

Graphene and its composites are promising catalysts for energetic materials. In order to realize the application of graphene in solid propellant, the effects of graphene content on the ignition, combustion and agglomeration characteristics of composite propellant were thoroughly conducted based on thermogravimetric-differential scanning calorimetry measurements (TG-DSC), laser ignition, combustion diagnoses, burning rate test and condensed combustion products collection. Results show that graphene effectively promotes the thermal decomposition of AP. 3 wt.% graphene advances the thermal decomposition temperature of AP by 68.3 degrees C, and 1 wt.% graphene increases the apparent decomposition heat of AP by 2.6 times. Laser ignition experiments show that the combustion intensity and mass burning rate increase, while the ignition delay time decreases with increasing graphene content. The addition of graphene is found to increase the burning rate at 0.1 MPa, but the effect is not obvious at 1-7 MPa, thus reducing the pressure exponent. 0.5 wt.% graphene can reduce the pressure exponent from 0.43 to 0.34. Compared with the baseline propellant, more aluminum particles are ignited on the surface of the propellant containing graphene and the large size agglomerates in the condensed combustion products decrease significantly. Overall, graphene plays a comprehensive effect on the ignition, combustion and agglomeration characteristics of aluminized propellant. Results of this study can help guide the application and development of graphene or graphene-inclusion materials in solid propellant for solid rocket motors. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译：石墨烯及其复合材料是能量材料的承诺催化剂。为了实现石墨烯在固体推进剂中的施加，基于热重分差扫描量热测量（TG-DSC），激光点火，燃烧诊断，将石墨烯含量对复合推进剂的点火，燃烧和附聚特性进行效果，激光点​​火，燃烧诊断，燃烧速率测试和浓缩燃烧产品集合。结果表明，石墨烯有效地促进了AP的热分解。 3重量％的石墨烯将AP的热分解温度推进68.3℃，1重量％的石墨烯增加了2.6次AP的表观分解热量。激光点火实验表明，燃烧强度和质量燃烧速率增加，而点火延迟时间随着石墨烯含量的增加而降低。发现添加石墨烯以增加0.1MPa的燃烧速率，但效果在1-7MPa下不明显，因此减少了压力指数。 0.5重量％。％石墨烯可以将压力指数从0.43减少到0.34。与基线推进剂相比，更多的铝颗粒在含有石墨烯的推进剂的表面上点燃，并且冷凝燃烧产物中的大尺寸附聚物显着降低。总的来说，石墨烯对铝化推进剂的点火，燃烧和附聚特性起了全面影响。本研究的结果可以帮助指导固体推进剂的石墨烯或石墨烯包装材料的应用和开发，用于固体火箭电动机。 （c）2021 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2021年第11期|106988.1-106988.10|共10页
  • 作者

    Liu Lu; Ao Wen; Wen Zhan; Zhang Yu; Lv Xiang; Qin Zhao; Liu Peijin;

  • 作者单位

    Northwestern Polytech Univ Internal Flow & Thermostruct Lab Sci & Technol Combust Xian 710072 Peoples R China;

    Northwestern Polytech Univ Internal Flow & Thermostruct Lab Sci & Technol Combust Xian 710072 Peoples R China;

    Northwestern Polytech Univ Internal Flow & Thermostruct Lab Sci & Technol Combust Xian 710072 Peoples R China;

    Northwestern Polytech Univ Internal Flow & Thermostruct Lab Sci & Technol Combust Xian 710072 Peoples R China;

    Northwestern Polytech Univ Internal Flow & Thermostruct Lab Sci & Technol Combust Xian 710072 Peoples R China;

    Xian Modern Chem Res Inst Sci & Technol Explos Lab Xian 710065 Peoples R China;

    Northwestern Polytech Univ Internal Flow & Thermostruct Lab Sci & Technol Combust Xian 710072 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Graphene; Solid propellant; Combustion; Burning rate; Agglomeration;

    机译：石墨烯;固体推进剂;燃烧;燃烧率;聚集;

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