多官能度聚氨酯丙烯酸酯水性UV树脂的合成与性能表征  

Preparation and Characterization of Waterborne UV Curable Resin of Polyurethane-Acylates with Multinfunctionalities

作　　者：苏嘉辉 黄伟 杨雪娇 陈颖茵[1] 罗青宏[1] 刘晓暄[1] 

机构地区：[1]广东工业大学材料与能源学院高分子材料与工程系,广东广州510006 [2]东莞进出检验检疫局检验检疫综合技术中心,广东东莞523072

出　　处：《高分子材料科学与工程》2015年第1期13-18,共6页Polymer Materials Science & Engineering

基　　金：东莞市高等学校科研院所科学计划项目(重点)(2011108101013)

摘　　要：采用异佛尔酮二异氰酸酯(IPDI)、聚乙二醇600(PEG600)、2,2-二羟甲基丙酸(DMPA)为主要原料合成水性聚氨酯分散体,然后分别通过甲基丙烯酸-2-羟乙酯(HEMA)、二甲基丙烯酸甘油酯(GMDA)和季戊四醇三丙烯酸酯(PETA)引入碳碳双键,制备了2,4,6官能度的3种聚氨酯丙烯酸酯(PUA)水性UV树脂(UV-WPUA)。利用二正丁胺法测定合成过程中异氰酸根(-NCO)含量的变化,通过红外光谱(FT-IR)表征了合成产物的结构,树脂的紫外光固化结果表明4官能度的树脂具有最高的转化率(80%);随着官能度的提高,吸水率降低而光泽度逐步提高,其中4官能度的树脂力学性能更为优良。A series of waterborne UV curable resins of polyurethane-acrylate were synthesized with isophorone diisocyanate(IPDI),poly ethylene glycol(PEG600),1,4-butanediol(1,4-BA),2,2-dimethylol propionic acid(DMPA)as main material.Then,UV curable waterborne polyurethane-acylates(UV-WPUAs)with different C=C double bond functionality,were prepared with 2-hydroxyethyl methacrylate(HEMA),glycerol dimethacrylate(GMDA)or pentaerythritol triacrylate(PETA).The change of isocyanate(-NCO)content during synthesis progress was monitored by di-n-butylamine titration method.The structure of the synthesized products was characterized by FT-IR.The UV-curing results show that the resin with four functionalities has the highest conversion,(80%),the water absorption is lower and the glossiness gradually increases with improvement of the functionality,and the mechanical performance is more superior for the resin with four functionalities.

关 键 词：紫外光固化 水性UV树脂 聚氨酯丙烯酸酯 多官能度 

分 类 号：TQ630.1[化学工程—精细化工]