以乙酰丙酸衍生物为原料的新型聚酯的合成与性能的中期报告摘要：本论文研究以乙酰丙酸衍生物为原料合成新型聚酯的方法及其性能。通过对不同酯化条件下，以乙酰丙酸甲酯与苯酚的酯化反应进行优化，确定了最优的反应条件：反应温度120℃，反应时间4h，催化剂为硫酸。得到的乙酰丙酸-苯酚酯化产物经过酸值调整、酯交换反应和环氧化反应，最终得到了新型聚酯。采用核磁共振、红外光谱、热重分析等多种技术手段对合成产物进行了表征，并比较了不同反应条件下得到的产物性能。结果表明，最优条件下合成的新型聚酯具有较好的热稳定性和耐水性，具有应用前景。关键词：乙酰丙酸衍生物；新型聚酯；酯化反应；酸值调整；酯交换反应；环氧化反应；热稳定性；耐水性；应用前景Abstract:Thispaperstudiesthesynthesismethodandpropertiesofanewtypeofpolyestersynthesizedfromacetylpropionicacidderivatives.Byoptimizingtheesterificationreactionbetweenmethylacetylpropionateandphenolunderdifferentesterificationconditions,theoptimalreactionconditionsweredetermined:reactiontemperatureof120°C,reactiontimeof4h,andcatalystofsulfuricacid.Theacetylpropionicacid-phenolesterificationproductobtainedwasadjustedwithacidvalue,thenunderwentesterexchangereactionandepoxidationreaction,andfinallyanewtypeofpolyesterwasobtained.Thesynthesizedproductwascharacterizedbynuclearmagneticresonance,infraredspectroscopy,andthermogravimetricanalysis,andthepropertiesofdifferentproductsobtainedunderdifferentreactionconditionswerecompared.Theresultsshowthatthenewtypeofpolyestersynthesizedundertheoptimalconditionshasgoodthermalstabilityandwaterresistance,andhasapplicationprospects.Keywords:acetylpropionicacidderivatives;newtypeofpolyester;esterificationreaction;acidvalueadjustment;esterexchangereaction;epoxidationreaction;thermalstability;waterresistance;applicationprospect