纳米氧化锌为光引发剂的水性光固化聚氨酯丙烯酸酯清漆及漆膜性能的研究  

Study on Waterborne UV-Curable Polyurethane Acrylate Clearcoat and Its performance Based on Nano ZnO as Photoinitiator

作　　者：冯钦 冯俊[2] 叶代勇[2] Feng Qin;Feng Jun;Ye Daiyong(Carpoly Chemical Group Co., Ltd., Jiangmen, Guangdong 529085, China;College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China)

机构地区：[1]嘉宝莉化工集团有限公司,广东江门529085 [2]华南理工大学化学与化工学院,广州510640

出　　处：《涂料工业》2019年第7期1-7,15,共8页Paint & Coatings Industry

摘　　要：为了消除有机光引发剂在光解时产生的小分子污染物,制备了纳米氧化锌,并合成了水性聚氨酯丙烯酸酯,按照一定的比例,将纳米氧化锌作为光引发剂,制得无机纳米光引发剂引发的水性光固化涂料。采用红外光谱仪、紫外可见分光光度计、X-射线衍射仪、马尔文粒度仪、透射电子显微镜、热重分析仪、扫描电子显微镜等测试分析了纳米氧化锌与水性光固化聚氨酯丙烯酸酯的漆膜;同时研究了漆膜的物理性能,当纳米氧化锌的添加量为1%时,光固化漆膜的硬度为H、附着力为0级、光泽为90左右、耐水性良好、耐碱性能好、耐醇性优良。表明纳米氧化锌可以代替有机光引发剂,用于水性光固化聚氨酯丙烯酸酯,从而合成出更环保、更优良的水性光固化涂料。In order to eliminate the small molecular fragments generated by organic photoinitiators during photolysis, nano zinc oxide was prepared and waterborne polyurethane acrylates was synthesized. Nano zinc oxide with a certain weight percentage was used as an inorganic photoinitiator for waterborne UV-curable coatings. The nano zinc oxide and UV-cured films of waterborne UV-curable coatings were analyzed by infrared spectroscopy, ultraviolet spectroscopy,X-ray diffraction, Malvern particle size analyzer,Zeta potential,transmission electron microscopy, thermogravimetric analysis, and scanning electron microscopy, respectively. The mechanical and physical properties of the paint film were also tested .When the content of nanozinc oxide is 1%, the UV-cured film provided a hardness of H, adhesion of grade 0, gloss of about 90, and good water resistance, alkali resistance and excellent ethanol resistance . It was demonstrated that nano zinc oxide could be used as an alternative photoinitiator to organic photoinitiators for waterborne UV-curable polyurethane acrylates, making the waterborne UVcurable coatings more environmental friendly and better quality.

关 键 词：纳米氧化锌 聚氨酯丙烯酸酯 水性光固化涂料 光引发剂 

分 类 号：TQ637.83[化学工程—精细化工]