基于巯-烯点击反应的生物基光固化涂料的制备及性能研究  

Preparation and Properties of Bio-based UV-curable Coatings Based on Thiol-ene Click Reaction

作　　者：郜娅 李林青 潘学仪 李建波[2] Gao Ya;Li Linqing;Pan Xueyi;Li Jianbo(Henan Vocational College of Light Industry,Zhengzhou 450002,China;School of Materials Science and Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]河南轻工职业学院轻化工程系,郑州450002 [2]同济大学材料科学与工程学院,上海201804

出　　处：《涂料工业》2023年第11期29-33,共5页Paint & Coatings Industry

摘　　要：以丁香酚、甘脲为原料,分别制备二烯丙基丁香酚(2A-EU)和无酯键四巯基甘脲(TMGU)。通过调控n(2A-EU)∶n(TMGU)制备了一系列可UV固化的涂料,并对其耐热性、固化行为和涂层基本性能、热力学性能、力学性能进行研究,探究了不同n(C=C)∶n(—SH)对涂料性能的影响。结果表明:2A-EU和TMGU被成功合成;随着TMGU用量的增加,固化后交联网络更为致密,玻璃化转变温度从22℃升高至50℃,初始热分解温度(T5%)从220.8℃升高至288.5℃,涂层拉伸强度从0.67 MPa提高至15.79 MPa,对玻璃的附着力从2级提高至0级,且涂层具有较好的透明度。Diallyl eugenol(2A-EU)and tetrathioglycoluril(TMGU)were prepared from eugenol and glycoluril,respectively.A series of thiol-ene UV curable coatings was prepared by adjusting n(2A-EU)∶n(TMGU),and their heat resistance,curing behavior,coating properties,thermodynamic properties and mechanical properties were studied.Finally,the effects of n(C=C)∶n(—SH)on the properties of the coatings were investigated.The results showed that with the increase of TMGU dosage,the crosslinking network was denser after curing.The glass transition temperature(Tg)of the coating increased from 22℃to 50℃,while the initial thermal decomposition temperature(T5%)increased from 220.8℃to 288.5℃and the tensile strength increased from 0.67 MPa to 15.79 MPa.The UV-curing coating had good transparency and adhesion to glass.

关 键 词：生物基 光固化 耐热性 力学性能 

分 类 号：TQ637.83[化学工程—精细化工]