温度变化对含硬脂酸包覆滑石粉环氧涂层渗水率的影响  

EFFECT OF TEMPERATURE ON PERMEABILITY OF WATER VAPOR THROUGH EPOXY COATING WITH TALCUM POWDER COATED BY STEARIC ACID

作　　者：陈立庄[1] 高延敏[1] 邹俊[1] 张鑫[1] 王鹏[1] 

机构地区：[1]江苏科技大学先进焊接技术省重点实验室,镇江212003

出　　处：《腐蚀科学与防护技术》2006年第5期367-369,共3页Corrosion Science and Protection Technology

摘　　要：利用通透杯测定了不同温度下水汽在含硬脂酸包覆滑石粉环氧涂层中的渗透率,通过计算求出了水汽在涂层中传输的表观活化能.结果表明,温度升高,使水汽在涂层中渗透率加快,但对涂层的饱和吸水量影响不大;水汽在硬脂酸包覆填料涂层中的传输的表观活化能明显高于水在填料未被硬脂酸包覆涂层中传输的表观活化能.The permeability of water vapor through epoxy coatings with talcum powder coated by stearic acid was measured by permeation cup, the apparent permeation activation energy was calculated. The experiment results show that the water vapor permeability increased with increasing temperature, however, saturated water absorption of the coating changed very little. The apparent permeation activation energy of water vapor through epoxy coating with talcum powder coated by stearic acid is obviously higher than that free of stearic acid.

关 键 词：硬脂酸 包覆 渗水率 表观活化能 

分 类 号：TG172.7[金属学及工艺—金属表面处理]