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Decomposition characteristics of an elemental sulfur doped polysulfide based ramjet fuel

机译：元素硫掺杂多硫化物冲压发动机的分解特性

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摘要

The decomposition characteristics of five candidate polysulfide (LP-33) based ramjet solid fuel formulations are evaluated using thermogravimetric analysis and differential scanning calorimetry. The formulations are variants on the polymer crosslink mechanism and the doping mass fraction of elemental sulfur. Four fuel candidates are oxidatively cured and one formulation is cured with isocyanates. Post-cure, the Shore-A hardness of each sample is measured followed by TGA and DSC analysis. The objective of this research is to develop a solid fuel ramjet formulation with thermal decomposition onset temperatures lower than conventional ramjet fuels while maintaining a Shore-A hardness of at least 30. The results show that polysulfide based formulations decompose at temperatures approximately 120 C lower than hydroxyl-terminated polybutadiene based fuels. Additionally, the results demonstrate that the decomposition onset temperature, and the heat of decomposition can be further reduced with the addition of elemental sulfur. Published by Elsevier Inc. on behalf of The Combustion Institute.
机译：使用热重分析和差示扫描量热法评估了五种基于多硫化物（LP-33）的冲压喷气发动机固体燃料配方的分解特性。该配方是聚合物交联机理和元素硫的掺杂质量分数的变体。四种燃料候选物被氧化固化，一种配方用异氰酸酯固化。固化后，测量每个样品的肖氏A硬度，然后进行TGA和DSC分析。这项研究的目的是开发一种固体燃料冲压发动机配方，其热分解起始温度低于传统冲压发动机燃料，同时保持Shore-A硬度至少为30。结果表明，基于多硫化物的配方在低于120℃的温度下分解。羟基封端的聚丁二烯基燃料。另外，结果表明，通过添加元素硫可以进一步降低分解起始温度和分解热。由Elsevier Inc.代表燃烧研究所出版。

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  • 来源
    《Combustion and Flame》 |2017年第2期|1-11|共11页
  • 作者

    McDonald Brian; Rice Jeremy; Stewart John;

  • 作者单位

    US Army RDECOM, RDMR WDP M, Weap Dev & Integrat Directorate, Redstone Arsenal, AL 35898 USA;

    US Army RDECOM, RDMR WDP M, Weap Dev & Integrat Directorate, Redstone Arsenal, AL 35898 USA;

    US Army RDECOM, RDMR WDP M, Weap Dev & Integrat Directorate, Redstone Arsenal, AL 35898 USA;

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

    Polysulfide; Solid fuel ramjet; Ignition; Fuel decomposition;

    机译：多硫化物;固体燃料冲压发动机;着火;燃料分解;

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