浙江大学学报（理学版）2026，Vol.53Issue(3)：362-370,393,10.DOI:10.3785/1008-9497.25079
超支化聚乙烯亚胺型分散剂对吸热型碳氢燃料热氧化沉积的抑制研究
Investigation on the inhibition of thermal oxidation deposition in endothermic hydrocarbon fuels by hyperbranched polyethyleneimine-based dispersants
摘要
Abstract
Aiming at the issues of insufficient thermal stability and weak dispersion efficiency of traditional dispersants,this work constructs a novel dispersant system based on hyperbranched polyethyleneimine.Three novel dispersants named PH-10000,PH-600 and PL-10000 were synthesized using polyethyleneimines with different structures and different relative molecular weights as the core and polyisobutenyl succinic anhydride(PIBSA)as the hydrocarbylating agent.The molecular structures of the synthesized products are characterized by proton nuclear magnetic resonance spectroscopy(1H NMR)and Fourier-transform infrared spectroscopy(FTIR),and their physicochemical properties and dispersion capabilities are studied.The results show that compared with the conventional dispersant T-155,the hyperbranched polyethyleneimine-based dispersants have significant advantages in application performance.The initial decomposition temperatures of PH-600 and PH-10000 are more than 56℃higher than that of the dispersant T-155,demonstrating superior thermal stability.With excellent thermal stability,abundant polar adsorption sites and strong steric barrier effect,the hyperbranched polyethyleneimine-based dispersants can effectively prevent the sedimentation of oxides in high-temperature environments,thereby improving the thermal oxidation stability of fuels.关键词
超支化聚乙烯亚胺/分散剂/热稳定性/界面张力Key words
hyperbranched polyethyleneimine/dispersant/thermal stability/interfacial tension分类
化学化工引用本文复制引用
冯经科,蒋朋飞,陈鑫阳,吴鹏俊,郭永胜,方文军..超支化聚乙烯亚胺型分散剂对吸热型碳氢燃料热氧化沉积的抑制研究[J].浙江大学学报（理学版）,2026,53(3):362-370,393,10.基金项目
国家自然科学基金项目(22127802). （22127802）
