高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (2): 329.

• 研究简报 • 上一篇    下一篇

电化学阻抗法研究环氧膜的吸水性能

罗小雯1, 陈月辉1, 李善君1, 周伟舫2   

  1. 1. 复旦大学高分子科学系, 上海 200433;
    2. 复旦大学化学系, 上海 200433
  • 收稿日期:1995-03-07 出版日期:1996-02-24 发布日期:1996-02-24
  • 通讯作者: 李善君
  • 作者简介:罗小雯,女,27岁,硕士,讲师.
  • 基金资助:

    国家自然科学基金

Studies on Water Absorption of Epoxy Resins by Electrochemical Impedance Spectroscopy

LUO Xiao-Wen1, CHEN Yue-Hui1, LI Shan-Jun1, ZHOU Wei-Fang2   

  1. 1. Department of Macromolecular Science, Fudan University, Shanghai 200433;
    2. Department of Chemistry, Fudan University, Shanghai 200433
  • Received:1995-03-07 Online:1996-02-24 Published:1996-02-24

关键词: 电化学阻抗谱, 环氧膜, 交联密度, 吸水性能

Abstract: Electrochemical impedance spectra were measured for the aluminum electrodes coated with epoxy resin films of various different crosslinking densities in 0.5 mol/L NaCl solution(room temperature) at open circuit potential.By fitting the Nyquist curves with the equivalent circuit generally used for the coated electrode,the values of the film resistance,the film capacitance,the electrochemical reaction resistance and the double layer capacitance were obtained and used to discuss the relationship between the structure and the water absorption of epoxy resins.It is found that the amount of the water absorbed in the cured epoxy resins increases with increasing extent of cure.

Key words: Electrochemical impedance spectroscopy.Epoxy film, Crosslinking density, Water absorption

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