Acta Chimica Sinica ›› 1999, Vol. 57 ›› Issue (3): 329-332. Previous Articles    

Original Articles

电化学阻抗法研究降低环氧涂层的吸水性能

张树永;周伟舫;罗小雯;李善君   

  1. 复旦大学化学系.上海(200433);复旦大学高分子科学系.上海(200433);复旦大 学国家教委聚合物分子工程开放实验室
  • 出版日期:1999-03-15 发布日期:1999-03-15

A study on the lowering of the water sorption of the epoxy coating using electrochemical impedance spectroscopy

Zhang Shuyong;Zhou Weifang;Luo Xiaowen;Li Shanjun   

  1. Fudan Univ, Dept Chem.Shanghai(200433);Fudan University, Department of Macromolecular Science.Shanghai(200433)
  • Online:1999-03-15 Published:1999-03-15

The lowering of the water sorption of the epoxy coating by replacing the hydroxyl groups in the coating with acetoxy groups has been studied using electrochemical impedance spectroscopy. The experimental results show that the lowering of the water sorption at the coating/substrate interface of the novel epoxy coating is much larger than that in the bulk of the coating. This may be attributed to the surface bond formation which makes the orientation of the acetoxy groups at the interface different from that in the bulk, and causes the coating near the interface less hydrophilic.

Key words: EPOXY RESINS, COAT, ABSORPTION WATER PROPERTY, IMPEDANCE

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