水和氯离子在纳米蒙脱土改性光固化涂层中的传输行为  

Diffusion Behaviors of Water and Chloride Ion 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 烟台,威海264200

出　　处：《腐蚀与防护》2008年第4期189-191,共3页Corrosion & Protection

摘　　要：采用静态浸泡法绘制了漆膜增重-时间曲线,考察了纳米蒙脱土(nano-MMT)改性紫外光固化涂层的吸水性,分析了纳米蒙脱土用量、环氧丙烯酸酯(EA)与合成活性稀释剂(AD)比例、光固化涂层的固化程度与介质传输行为的关系。结果表明:在浸泡初期,NaCl溶液在涂层中的传输行为符合Fick扩散定律,之后涂层吸水量达到饱和,由计算公式可求得渗透介质在涂层中的扩散系数。同时,涂层的固化程度越高、WEA:WAD越大,涂层的抗介质渗透性能越好。Diffusion behaviors of UV-cured coatings modified by nano-montmorillonite(nano-MMT) were investigated by using static immersion method.The effects of addition amount of nano-MMT,the weight ratio of epoxy acrylate(EA) to reactive diluents(AD) and the curing degree of the UV-cured coating on the behavior of medium permeation were analyzed.The results showed that the diffusion behavior of permeation medium conformed to Fick diffusion law in early stage,and then the water percolating capacity was constant.The d...

关 键 词：紫外光固化涂料 纳米蒙脱土 介质传输 Cl- 

分 类 号：TG174[金属学及工艺—金属表面处理]