|Table of Contents|

Effect of dispersant on thermal oxidation stability of high-density fuel(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2024年05期
Page:
65-74
Research Field:
目次
Publishing date:

Info

Title:
Effect of dispersant on thermal oxidation stability of high-density fuel
Author(s):
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
Keywords:
dispersant;  high-density fuel;  thermal oxidation stability;  rapid small-scale oxidation tester;  deposits
PACS:
TQ 203.9
DOI:
10.3969/j.issn.1672-9374.2024.05.006
Abstract:
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. 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(O2)for 5 h, when the addition of high molecular weight polyisobutene succinimide T161(molecular weight >1 000)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.

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