键合型铕聚氨酯荧光涂料的合成和发光性能的研究  

Synthesis and Luminescent Properties of Bonded Polyurethane Fluorescent Paint with Eu^(3+) Complex

作　　者：方蓉 张达 范淑红[1] 王帆 王正祥[1] Fang Rong;Zhang Da;Fan Shuhong;Wang Fan;Wang Zhengxiang(School of Packaging and Engineering,Hunan University of Technology,Zhuzhou,Hunan 412001,China;Zhuzhou Times New Material Technology Co.,Ltd.,Zhuzhou,Hunan 412007,China)

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007 [2]株洲时代新材料科技股份有限公司研究生联合培养基地,湖南株洲412007

出　　处：《涂料工业》2022年第1期1-8,共8页Paint & Coatings Industry

基　　金：湖南工业大学“双一流学科重点项目”(18A260);湖南省教育厅创新平台开放基金项目(18K079)。

摘　　要：以铕离子为发光中心,噻吩甲酰三氟丙酮、二羟甲基丙酸、邻菲罗啉为配体合成了分子中含羟基官能团的稀土铕配合物,并将其以键合的方式引入到水性聚氨酯高分子链中,制备出一系列铕含量不同的聚氨酯高分子。通过红外光谱、热重分析、荧光光谱等对样品进行了表征。结果表明:不同铕含量的聚氨酯高分子的吸收特征由于Eu^(3+)含量低的缘故而表现为聚氨酯的结构特征;铕聚氨酯荧光材料具有较好的热稳定性;不同Eu^(3+)含量的荧光膜能发射出均匀且强的荧光,发射峰在614 nm处,归属于^(5)D_(0)→^(7)F_(2)电子跃迁,为铕离子的特征发射。在实验研究的浓度范围内,发光强度随Eu^(3+)含量的增加而增加,没有发生荧光猝灭现象。该荧光材料与聚氨酯涂料及丙烯酸酯涂料具有良好的相容稳定性,有望应用于油墨连接料制备荧光防伪油墨或作为大棚塑料膜的荧光涂层。The europium rare earth complex containing reactive hydroxyl groups(-OH)were prepared by dimethylolpropionic acid(DMPA),europium oxide(Eu_(2) O_(3)),thenoyltrifluoroacetone(HTTA),and 1,10-anhydrousphenanthroline(phen).The synthesized complexes were introduced into the waterborne polyurethane polymer chain in a bonded manner,and a series of bonded photoluminescent waterborne polyurethane luminescent materials with different concentration of rare earth europium complexes were prepared.The structure,thermal stability,and luminescence properties of the samples were characterized by infrared spectroscopy,thermogravimetric analysis and fluorescence spectrum.The results showed that polyurethane polymers with different europium concentration have infrared absorption peaks belong to polyurethane because of the lower Eu^(3+) content,and good thermal stability.Meanwhile,uniform and strong fluorescence emission at 614 nm could be observed,due to the emission transition,from ^(5)D_(0)→^(7)F_(2),which belongs to Eu^(3+).Within the experimental concentration range,the luminescence intensity increased with the increasing of Eu^(3+) concentration,and no fluorescence quenching phenomenon occurred.The fluorescent material provided excellent compatibility and stability with polyurethane and acrylate coatings,which could be used as ink binders for fluorescent anti-counterfeiting inks,or fluorescent coatings for plastic films in greenhouses.

关 键 词：铕配合物 键合型 水性聚氨酯 发光性能 

分 类 号：TQ637.4[化学工程—精细化工]