Page 211 - 《精细化工》2020年第3期

第 37 卷第 3 期 精 细 化 工 Vol.37, No.3
202 0 年 3 月 FINE CHEMICALS Mar. 2020

建筑用化学品
含环氧基氟树脂防腐涂层的制备及性能

1*
1
1
2
1
狄凯莹 ，吕佳帅男 ，冯裕智 ，陈晓婷 ，毛占伟
（1. 天津科技大学 化工与材料学院，天津 300457；2. 深圳天科新材料有限公司，广东 深圳 518118）
摘要：用全氟己烷乙基丙烯酸酯和甲基丙烯酸缩水甘油酯共聚得到含环氧基的氟树脂，同时以全氟聚醚醇和二
乙胺、聚醚胺为原料，分别制备了两种胺类固化剂。利用 FTIR 表征了氟树脂及固化剂的结构。将质量分数为
1%（以涂覆剂整体质量计）的氟树脂涂覆在铜板表面并固化成膜，用水接触角、中性盐雾测试、EIS、极化曲
线等方法研究了涂层对铜板的防腐蚀性能。结果表明，铜板表面氟树脂 F-X 的接触角均在 120°以上，F-6（PFHEAc
与 GMA 质量比为 6∶4）与 F-5（PFHEAc 与 GMA 质量比为 5∶5）系列的涂层耐盐雾腐蚀时间可达 24 h 以上，
是市售电子涂布液 EGC-1702 的 2 倍，F-5 系列氟树脂涂层阻抗模值可达到 639.08 Ω，而涂层 EGC-1702 阻抗模
–4
–4
值只有 317.42 Ω。F-6 系列氟树脂腐蚀前后的腐蚀电流密度仅从 1.201×10 A 增大为 2.649×10 A，经 EIS 和极化
曲线分析表明合成的氟树脂耐腐蚀性优异。热重分析表明，涂层的热分解温度高于 330 ℃，热稳定性良好。
关键词：防腐；氟树脂；接触角；中性盐雾实验；电化学阻抗；建筑用化学品
中图分类号：TQ633 文献标识码：A 文章编号：1003-5214 (2020) 03-0629-07

Preparation and properties of epoxy-containing
fluororesin anti-corrosive coatings

1
2
1*
1
1
DI Kaiying , LÜJIA Shuainan , FENG Yuzhi , CHEN Xiaoting , MAO Zhanwei
（1. College of Chemical Engineering and Material Science, Tianjin University of Science & Technology,
Tianjin 300457, China; 2. Shenzhen TIC Material Co., Ltd., Shenzhen 518118, Guangdong,China）
Abstract: Epoxy group-containing fluororesins were obtained by copolymerization of perfluorohexane
ethyl acrylate and glycidyl methacrylate. Two amine curing agents were prepared from perfluoropolyether
alcohol, diethylamine and polyether amine. The structure of fluororesin and curing agent was characterized
by FTIR. Then, a series of coating agents with 1% mass fraction of fluororesin (based on the total mass of
the system) were cured on the surface of copper plate and formed films, respectively. The corrosion
resistance of these coatings was studied by water contact angle test, neutral salt spray test, electrochemical
impedance spectroscopy (EIS), polarization curve and so on. The results showed that the contact angle of
fluororesin F-X on the surface of copper plate was above 120°, the salt spray corrosion resistance time of
F-6 (mass ratio of PFHEAc to GMA of 6∶4) and F-5 (mass ratio of PFHEAc to GMA of 5∶5) series
coatings were more than 24 h, which was twice that of commercially available electronic coating liquid
EGC-1702. The impedance modulus of F-5 series fluororesin coating was up to 639.08 Ω, while that of
EGC-1702 coating was only 317.42 Ω. The corrosion current density of F-6 series fluororesin increased
–4
–4
from 1.201×10 A before corrosion to 2.649×10 A after corrosion. The electrochemical impedance
spectroscopy and polarization curve analysis showed that the synthesized fluororesin was excellent in
corrosion resistance. Thermogravimetric analysis indicated that the thermal decomposition temperature of
the coating was higher than 330 ℃, and the thermal stability was good.
Key words: anti-corrosion; fluororesin; contact angle; neutral salt spray test; electrochemical impedance
spectroscopy; building chemicals

电子设备组装完成后，元件及线路板在使用中 其表面会形成一层薄液膜而发生电化学腐蚀，极微量
因环境的温度、湿度、污染性气体以及尘埃等作用， 的吸附液膜或腐蚀产物就可能导致电路板及元件的

收稿日期：2019-07-10; 定用日期：2019-09-10; DOI: 10.13550/j.jxhg.20190671
作者简介：狄凯莹（1996—），女，硕士生，E-mail：897371372@qq.com。联系人：陈晓婷（1972—），女，副教授，E-mail：chenxt@
tust.edu.cn。