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

1实验部分
剂的毒性问题和光解产物的污染问题，正逐渐受到 用户和施工单位的密切关注。常用的有机光引发剂
Feng Qin1,Feng Jun2, Ye Daiyong2 (1. Carpoly Chemical Group Co. , Ltd. , Jiangmen, Guangdong 529085, China; 2. College of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, China )
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，
探
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 。
索
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
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中图分类号:TQ637. 83 文献标识码：A 文章编号:0253-4312(2019)07-0001 -08
开
doi：10. 12020/j. issn. 0253-4312. 2019. 7. 1
发
Study on Waterborne UV-Curable Polyurethane Acrylate Clearcoat and Its performance Based on Nano ZnO as Photoinitiator
Key words: nano zinc oxide; polyurethane acrylates; waterborne UV-curable coatings; photoinitiator
*通信联系人
冯钦等: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
水性光固化涂料以无毒的水替代活性稀释剂，以 化。更重要的是:纳米ZnO是不迁移、不扩散的无毒
Abstract: 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 nano­ zinc 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.
调节体系的施工黏度叫提高对生产人员、施工人员和 的无机光引发剂，不产生光解后的有机小分子碎片，
周围环境的保护。水性光固化涂料IT一般包括以下 消除了光引发剂的残留、扩散和光解小分子污染物,
三个组分:水性光敏低聚物，光引发剂以及助剂等。
进一步提高水性光固化涂料的环保性能。
随着国内外环保法规的日益严格，以及人们对 涂料环保期望的日益理想化，光固化涂料中光引发
第49卷第7期 2019年7月
涂料工业 PAINT &COATINGS INDUSTRY
Vol. 49 No. 7 Jul. 2019
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
冯钦1，冯俊2,叶代勇*2 (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)