室温自交联环氧酯树脂的制备及性能研究  

Preparation and Performance Study of a Room Temperature Self-Crosslinking Epoxy Ester Resin

作　　者：李小林 Li Xiaolin(Shanghai Huayi Coating Co.,Ltd.,Shanghai 201500,China)

机构地区：[1]上海华谊涂料有限公司,上海201500

出　　处：《上海涂料》2024年第3期18-21,共4页Shanghai Coatings

摘　　要：通过不饱和脂肪酸与环氧分子链上的环氧基和羟基进行酯化反应,制备出不同酯化程度的室温自交联环氧酯。研究了油酸种类、油度、反应温度、反应时间、松香树脂添加量对环氧酯树脂性能的影响。结果表明:当亚油酸与桐油酸的质量比为2∶1、松香树脂的添加量为5%,油度为70%时,制备出的环氧酯树脂干燥性能、硬度等性能最佳;当酯化反应温度为200℃、反应时间为7 h时,环氧酯树脂的合成工艺较为稳定,且制备的环氧酯底漆具有优异的干燥性能、硬度及耐水性能,适用于桥梁、管道、储罐、汽车等设施中钢铁构件的防护,应用前景广阔。Room temperature self-crosslinking epoxy ester resins with different degrees of esterification were prepared by esterification of unsaturated fatty acids with epoxy groups and hydroxyl groups on epoxy molecular chains.The effects of oleic acid type,oil length,reaction temperature,reaction time,and rosin resin addition on the properties of epoxy ester resin were studied.The results showed that when the mass ratio of linoleic acid and eleostearic acid is 2∶1,the addition amount of rosin resin is 5%,and the oil length is 70%,the prepared epoxy ester resin has the optimum drying property and hardness.When the esterification reaction temperature is 200℃and the reaction time is 7 hours,the synthesis process of epoxy ester resin is relatively stable,and the prepared epoxy ester primer has excellent drying property,hardness and water resistance.It is suitable for the protection of steel components in bridges,pipelines,storage tanks,automobiles and other facilities,and has broad application prospects.

关 键 词：环氧酯 酯化反应 酯化度 室温自交联 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]