| 李洋,王晓倩,刘婕,牛草坪,邬斌,甘露,林锋,邹艳红.PBT基推进剂热分解特性与慢烤行为关系研究[J].装备环境工程,2022,19(10):43-49. LI Yang,WANG Xiao-qian,LIU Jie,NIU Cao-ping,WU Bin,GAN Lu,LIN Feng,ZOU Yan-hong.The Relationship between Thermal Decomposition Characteristics and Slow Cook-off Behaviour of PBT-based Propellants[J].Equipment Environmental Engineering,2022,19(10):43-49. |
| PBT基推进剂热分解特性与慢烤行为关系研究 |
| The Relationship between Thermal Decomposition Characteristics and Slow Cook-off Behaviour of PBT-based Propellants |
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| DOI：10.7643/issn.1672-9242.2022.10.006 |
| 中文关键词: PBT推进剂 慢速烤燃 热分解 低易损性 动力学 航天材料中图分类号:TJ760 文献标识码:A 文章编号:1672-9242(2022)10-0043-07 |
| 英文关键词:PBT-based propellant slow cook-off thermal decomposition low vulnerability dynamics aerospace material |
| 基金项目: |
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| Author | Institution |
| LI Yang | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| WANG Xiao-qian | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| LIU Jie | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| NIU Cao-ping | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| WU Bin | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| GAN Lu | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| LIN Feng | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
| ZOU Yan-hong | Jianghe Chemical Technology Co., Ltd., Hubei Yichang, 444200, China |
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| 中文摘要: |
| 目的 研究PBT(3,3–二叠氮甲基氧丁环–四氢呋喃共聚醚)基推进剂慢速烤燃响应情况与热分解特性之间的关系。方法 采用差示量热扫描仪和慢速烤燃试验，研究推进剂在不同固含量(通过改变高氯酸铵含量来调整)和不同铝粉含量下的热分解温度变化情况，计算不同组分含量下推进剂的热分解动力学参数，对比分析PBT基推进剂固、铝粉含量变化对热分解特性及慢速烤燃行为影响。结果 固含量从78%下降至75%时，配方中AP(高氯酸铵)的高、低温热分解温度和热分解活化能均会下降。铝粉质量分数从18%下降至5%时，配方中AP的高、低温热分解温度和热分解活化能均会下降。当采用78%的固含量时，配方无法通过慢烤试验，而采用75%的固含量，铝粉质量分数为18%、5%时，均能通过慢烤试验。结论 根据热分析及慢烤试验结果可认为，固含量变化对慢烤响应程度变化有较大影响，Al粉含量变化对配方慢烤响应程度的影响较小。影响配方慢烤响应程度主要由AP高温分解控制，AP高温分解活化能越低，越有利于推进剂通过慢速烤燃测试。 |
| 英文摘要: |
| This paper aims to study the relationship between the slow cook-off response of PBT-based propellant and the thermal decomposition characteristics. Adopting DSC and slow cook-off experiments, we studied the thermal decomposition temperature that changes in the content of pushing agents in different solid content (changing the AP content) and different aluminum powder content as well as calculated the thermal decomposition dynamic parameters of the promotion agent under different component content. Also, we compared and analyzed the impaction of PBT base pushing agent solid content, aluminum powder content to thermal decomposition characteristics and slow roasting behavior. The results showed that when the solid content decreased from 78% to 75%, the thermal decomposition temperature and activation energy of AP in the formula decreased at high temperature and low temperature. When the aluminum power content decreased from 18% to 5%, the high temperature and low temperature decomposition temperature and activation energy in the formula also decreased. When the solid content of 78% is used, the recipe fails the slow cook-off, while using 75% solids, both 18% and 5% aluminum power passed the slow cook-off. According to the results of thermal analysis and slow cook-off tests, it can be seen that the change of solid content has a great influence on the response of slow cook-off, and the change of aluminum power content has little effect on it. The slow cook-off response of the formula is mainly controlled by AP pyrolysis. The lower the activation energy of AP pyrolysis, the better the propellant can pass the slow cook-off test. |
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