环氧酯改性水性丙烯酸树脂的制备及漆膜性能  

Construction and Film Properties of Epoxy Ester Modified Waterborne Acrylic Resin

作　　者：陈光娣 费贵强 段仪豪 王志东 白阳 CHEN Guangdi;FEI Guiqiang;DUAN Yihao;WANG Zhidong;BAI Yang(College of Chemistry and Chemical Engineering,Shaanxi University of Science&Technology,Xi'an 710021,China;Key Laboratory of Light Chemical Additives in Shaanxi Province,Xi'an 710021,China)

机构地区：[1]陕西科技大学化学与化工学院,西安710021 [2]陕西省轻化工助剂重点实验室,西安710021

出　　处：《涂料工业》2024年第8期45-52,共8页Paint & Coatings Industry

基　　金：国家自然科学基金项目(22078189);陕西省教育厅产业化项目(19jC010);陕西省特支计划-科技创新人才项目;陕西省重点研发项目(2020GY-243)。

摘　　要：为了提高丙烯酸树脂的耐水性、附着力以及耐溶剂性,以桐油酸和环氧树脂E-44为原料制备环氧酯,采用溶液聚合和自乳化工艺合成了环氧酯改性水性丙烯酸树脂,并引入氰特CY325氨基树脂制备双组分环氧酯改性水性丙烯酸树脂漆膜。利用FT-IR、1 H NMR、粒径测试等对环氧酯单体、环氧酯改性水性丙烯酸树脂的结构和性能进行表征和分析,并测试了单组分和双组分环氧酯改性水性丙烯酸树脂漆膜的硬度、光泽、吸水率、水接触角、耐溶剂性等性能。结果表明:当环氧酯用量为35%时,单/双组分漆膜综合性能达到最佳,双组分漆膜光泽(60°)达102.3,耐溶剂擦拭次数为500次,耐水性可达480 h,附着力为0级,铅笔硬度为4H,耐冲击性为50 cm。In order to improve the water resistance,adhesion and solvent resistance of acrylic resin,epoxy ester was prepared from tung oil acid and epoxy resin E-44,and epoxy ester modified waterborne acrylic resin was synthesized using solution polymerization and self emulsification processes.Then a two-component epoxy ester modified waterborne acrylic resin coating was prepared by introducing cyanate 325 amino resin.The structure and properties of epoxy ester monomers and epoxy ester modified waterborne acrylic resins were characterized and analyzed using FT-IR,1 H NMR and particle size testing,etc.The hardness,gloss,water absorption,water contact angle,solvent resistance,and other properties of one-component and two-component epoxy ester modified waterborne acrylic resin paint films were tested.The results showed that when the amount of epoxy ester was 35%,both one-component and twocomponent paint films showed the best comprehensive performance.The gloss of two component paint film(60°)reached 102.3,the solvent resistance wipe number was 500,the water resistance could reach 480 h,the adhesion was level 0,the pencil hardness was 4H,and the impact resistance was 50 cm.

关 键 词：环氧酯 改性 水性丙烯酸树脂 漆膜 

分 类 号：TQ637.81[化学工程—精细化工]