| Jet fuel is a sort of important energy to national economy and It is the blood of aircrafts. Jet fuel play a important role during the development of aircrafts. Especially the quality of Jet fuel inflences the performance and safety of aircraft. Along with the development of the aviation technology, the superior quality Jet fuel is needed. But now, the thermal stability of Jet fuel doesn' t meet the need of modern aircraft. In order to suit the need of modern aircraft, the thermal oxidation stability of Jet fuel must be improved.There are two sort of methods to improve the thermal oxidation stability of Jet fuel, one is changing technology of refine, another is adding the additive to Jet fuels.This thesis for the internal first time puts forward the possibility of using dispersant for improving the thermal oxidation stability of Jet fuel, at same time the dispersant were chosen.This thesis discribed the method of synthesizing the ashless dispersant梑ig molecule phosphosulfurized ester, and certify that It is good for improving thermal stability of Jet fuel.Through the experiment of thermal stability of Jet fuel, the inflence of dispersant to thermal stability of Jet fuel was inspected, the result expresses that one kind of dispersant and assistant can remarkably improve the thermal oxidition stability of Jet fuel.This paper principially discusses the theories of anoxidition of dispersant. this thesis uses the chemical element analysis, IR ect. for the token of the big molecule phosphosulfurized ester.
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