酸溶液在纳米蒙脱土改性EA光固化涂料中的渗透行为  

PENETRATION BEHAVIOR OF ACIDS SOLUTION THROUGH UV-CURED COATINGS MODIFIED BY NANO-MONTMORILLONITE

作　　者：郑耀臣[1] 陈芳 

机构地区：[1]烟台大学化工系,烟台264005 [2]威海鲁江实业有限公司技术部,威海264200

出　　处：《腐蚀科学与防护技术》2008年第5期328-330,共3页Corrosion Science and Protection Technology

摘　　要：采用静态浸泡法得到了漆膜增重—时间曲线,研究了酸溶液在纳米蒙脱土(nano-MMT)改性光固化涂层中的渗透行为.结果表明:浸泡初期,介质在涂层中的传输行为符合Fick扩散定律,之后涂层吸收量达到饱和,由计算公式可求得渗透介质在涂层中的扩散系数;添加nano-MMT、增加WEA:WAD的比例和提高交联密度可以减小渗透介质的扩散系数,提高涂层的抗介质渗透性能.Permeation behavior of UV-cured coating modified by nano-montmorillonite （nano-MMT） was addition of the amount of nano-MMT, the weight ratio of epoxy acrylate （EA） to a home-made photosensi tire reactive diluent （AD）, curing degree of the UV-cured coating, and the sorts of acid medium were discussed. The result showed that permeation behavior of medium followed Fick diffusion law in the early on reached saturation. The diffusion coefficient of permeation medium through UV-cured coatings could be calculated by a correlative formula. It follows that the medium permeation behavior in the coatings was mainly determined by the curing degree and the ratio of WEA to WAD. The resistance to medium permeation for the coatings increased with the increase of curing degree, the ratio of WEA to WAD,as well as the increase of the amount of nano-MMT.

关 键 词：紫外光固化涂料 纳米复合涂料 介质传输 酸 

分 类 号：TG174.46[金属学及工艺—金属表面处理]