环保型水性UV聚氨酯丙烯酸酯树脂的合成  

Synthesis of Environmental Friendly Waterborne UV Curable Polyurethane Acrylate Resin

作　　者：苏江 

机构地区：[1]海聚高分子材料科技有限公司,广州510730

出　　处：《涂料工业》2014年第6期49-53,共5页Paint & Coatings Industry

摘　　要：采用甲苯二异氰酸酯(TDI)、不同相对分子质量的聚乙二醇(PEG)、1,4-丁二醇(1,4-BDO)、2,2-二羟甲基丙酸(DMPA)、甲基丙烯酸羟乙酯(HEMA)、三乙胺(TEA)等为原料,以分步法合成环保型水性紫外光固化聚氨酯丙烯酸酯树脂(UV-WPUA),并通过红外表征其结构,合成的UV-WPUA树脂具有良好的外观透明性、较高的固含量和优异的水溶性。通过实时红外(FT-IR)跟踪双键转化率确定较优的光引发体系和干燥工艺,并研究不同相对分子质量的聚乙二醇对固化涂膜性能的影响,结果表明当光引发剂Irgacure1173的用量为树脂用量的5%,PEG相对分子质量为800时,双键达到较高转化率且涂膜的综合性能最优。A waterborne UV curable polyurethane acrylate resin（ UV-WPUA） was synthesized by multistep method using toluene diisocyanate（ TDI）,polyethylene glycol（ PEG） with different molecular weight,1,4-butanediol（ 1,4-BDO）,2,2-dimethylol propionic acid（ DMPA）,hydroxyethyl methacrylate（ HEMA） and triethylamine（ TEA） as raw materials,and characterized by FT-IR. The resulted resin showed good transparent and appearance,high solid content and excellent water solubility. The optimal photoinitiator system and drying process were determined via real-time FT-IR monitoring double bond conversion. The effect of polyethylene glycol with different molecular weight on performance of the cured film was studied. The results showed that a UV-WPUA comprising photoinitiator（ Irgacure1173） 5% and PEG with molecular weight800 gave a higher double bond conversion and the best properties of the cured film thereof.

关 键 词：水性树脂 紫外光固化 聚氨酯丙烯酸 实时红外 

分 类 号：TQ637.83[化学工程—精细化工]