UV固化PUA/EA共混乳液的制备与性能研究  

Preparation and Properties of UV-Curable PUA/EA Blend Emulsions

作　　者：宋文迪 王秀夷 方大为 王占东 王孟雪 聂俊[1] Song Wendi;Wang Xiuyi;Fang Dawei;Wang Zhandong;Wang Mengxue;Nie Jun(School of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Changzhou Photosensitive Materials Co.,Ltd.,Changzhou,Jiangsu 213000,China;Changzhou Institute of Advanced Materials Research,Beijing University of Chemical Technology,Changzhou,Jiangsu 213000,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]常州格林感光新材料有限公司,江苏常州213000 [3]北京化工大学常州先进材料研究院,江苏常州213000

出　　处：《涂料工业》2019年第4期14-20,共7页Paint & Coatings Industry

基　　金：江苏省自然科学基金青年基金(BK20150272)

摘　　要：为提高UV光固化共混乳液的涂膜性能,本文合成了可光固化的水性聚氨酯丙烯酸酯(PUA),并将其作为高分子乳化剂与环氧丙烯酸酯(EA)进行共混,制备岀4种不同的共混乳液。采用傅里叶变换红外光谱对PUA的反应过程进行监测,同时对产物结构进行表征,发现与目标产物相同。并分别通过DSC、TGA和DMA对共混涂膜的热稳定性及力学性能进行表征,研究了环氧丙烯酸酯EA含量对共混乳液粒径及其稳定性的影响。研究结果表明:乳液稳定性随着EA含量的增多逐渐下降,且粒径变大。与纯PUA相比,在不改变涂膜柔韧性的同时,共混涂膜的硬度增大,热稳定性逐步提高,耐水及耐溶剂性显著改善。In order to improve the coating properties of UV-curable blend emulsions,four different blend emulsions were prepared by blending the synthesized UV-curable waterborne polyurethane acrylate(PUA)as a polymer emulsifier with the epoxy acrylate(EA).The reaction process was monitored by Fourier transform infrared spectroscopy,and the product structure was characterized and found that it was identical to the target product.The thermal stability and mechanical properties of the blend film were characterized by DSC,TGA and DMA respectively.The effects of EA content on the particle size and stability of the blend emulsions were studied.The results showed that emulsion stability gradually decreased with the increase of EA content,and the particle size became larger.Compared with pure PUA,the flexibility of the blend films was not changed,meanwhile,the hardness of the blend film increased,the thermal stability gradually increased,and the water resistance and solvent resistance improved significantly.

关 键 词：UV固化 聚氨酯丙烯酸酯 环氧丙烯酸酯 共混乳液 

分 类 号：TQ637.83[化学工程—精细化工]