摘要
高密度燃料的热氧化安定性对其换热安全性乃至高超音速飞行器的飞行安全至关重要。在燃料中加入清净分散剂可减少热氧化沉积前驱体及沉积物的生成,有助于提高燃料的热氧化安定性。采用快速小型热氧化安定仪研究了不同清净分散剂结构对高密度燃料JP-10热氧化安定性的影响规律,结果表明:在140℃,700 kPa氧气压力下氧化5 h后,当高分子量聚异丁烯基丁二酰亚胺T161(分子量>1000)在JP-10(5 mL)中添加量为100 mg/L时,氧化沉积物的质量减少了56%(94.5 mg),且适当增加分散剂中非极性基团的链长和极性基团的体积,有利于提高JP-10的热氧化安定性;此外,当清净分散剂中极性基团位于分子中部时,对沉积物的抑制效果则更加显著。
The thermal oxidation stability of high-density fuel is very important for its heat transfer safety and even flight safety of hypersonic vehicles.The addition of the dispersant to the fuel can reduce the formation of the precursors and deposits of thermal oxidation,and help to improve the thermal oxidation stability of the fuel.In this paper,The effect of different dispersant structures on the thermal oxidation stability of high-density fuel JP-10 was studied by using a rapid small-scale oxidation tester.The results show that after oxidation at 140℃and 700 kPa(O 2)for 5 h,when the addition of high molecular weight polyisobutene succinimide T161(molecular weight>1000)to JP-10(5 mL)is 100 mg/L,the mass of deposits is reduced by 56%(94.5 mg).Appropriately increasing the chain length of non-polar groups and the volume of polar groups in the dispersant is conducive to improving the thermal oxidation stability of JP-10.In addition,when the polar group in the dispersant is located in the middle of the molecule,the inhibition effect on the deposits is more significant.
作者
舒玉美
安佳毅
薛康
贾挺豪
史成香
张香文
邹吉军
潘伦
SHU Yumei;AN Jiayi;XUE Kang;JIA Tinghao;SHI Chengxiang;ZHANG Xiangwen;ZOU Jijun;PAN Lun(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China)
出处
《火箭推进》
CAS
北大核心
2024年第5期65-74,共10页
Journal of Rocket Propulsion
基金
国家重点研发计划(2023YFB4103001)
国家自然科学基金(22408272,21978200)。
