The enhancement of benzotriazole on epoxy functionalized silica sol-gel coating for copper protection

详细信息    查看全文

• 作者：Shusen Peng ; Wenjie Zhao ; He Li ; Zhixiang Zeng ; Qunji Xue ; Xuedong Wu ; ^{xdwu@nimte.ac.cn}
• 关键词：Benzotriazole ; Copper ; Anticorrosion ; Sol&ndash ; gel coating ; Electrochemical measurement ; Salt spray test
• 刊名：Applied Surface Science
• 出版年：2013
• 出版时间：1 July, 2013
• 年：2013
• 卷：276
• 期：Complete
• 页码：284-290
• 全文大小：2209 K

文摘

The influence of the amount of benzotriazole (BTA) on the wetting and anticorrosion ability of the epoxy functionalized silica sol-gel (ESol) coating was studied by various complementary methods. IR results demonstrate that BTA reacted with ESol through a 1:1 addition reaction of NH to epoxy group. The water contact angle of the ESol coating increases with an increase in the amount of BTA. SEM and adhesion tests reveal that BTA could improve the adhesion of ESol to copper surface. Moreover, the best protection was achieved when the amount of BTA equals to the molar number of epoxy group in the ESol coating according to the results of electrochemical measurements and salt spray test.