固化氛围对丙烯酸酯紫外光固化材料表面性能的影响  

Influence of curing environment on surface properties of ultraviolet cured acrylates

作　　者：骆燕[1] 王德海[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,杭州310014

出　　处：《辐射研究与辐射工艺学报》2007年第1期15-18,共4页Journal of Radiation Research and Radiation Processing

基　　金：浙江省自然科学基金(Z503236)资助

摘　　要：在空气或氮气氛围下对同样配方的光敏树脂进行紫外光固化,固化膜的表面能测定表明,空气中固化材料的表面能大于氮气中固化材料。固化膜的元素分析和衰减全反射-傅立叶变换红外光谱(Attenuated total reflectance-Fourier transform infrared spectroscopy,ATR-FTIR)分析表明,氧阻聚反应并未导致空气下固化的材料中氧含量的明显变化,其红外谱图中未见有过氧基团的吸收峰,但其表面富集有较多的吸电子基团;而氮气下固化的材料表面存在较多的碳碳单键。X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)分析表明,不同的固化氛围使材料表面Cls和O1s原子结合能产生差异。说明固化氛围影响固化速率,使固化过程中固化膜组成分布或聚集态密度产生差异,最终使固化层的表面化学组成乃至表面能存在差别。Photosensitive resins were UV cured in air or under N2, and surface energy of the cured films were measured. It was found that surface energy of the films cured in air is higher than the films cured under N2. Elemental analysis, ATR-FTIR and XPS analysis were performed. The results show that oxygen inhibition did not result in obvious change in oxygen content of the film cured in air, and the absorption band of peroxide group could not be observed. The surface of the films cured in air were rich in electron-withdrawing groups, whereas the films cured under N2 were rich in carbon single bonds. The different curing atmospheres also resulted in the diversity of binding energy between C1s and O1s atoms on the surfaces. These indicate that different curing atmospheres cause changes in the curing rate, distribution of the compositions and density of the polymer, resulting in differences in chemical composition of the surface and surface energy of the films.

关 键 词：固化氛围 氧阻聚 元素分析 衰减全反射-傅立叶变换红外光谱 X射线光电子能谱 

分 类 号：TQ57[化学工程—精细化工] TQ317.2