Page 201 - 《精细化工》2022年第4期

第 39 卷第 4 期 精 细 化 工 Vol.39, No.4
2022 年 4 月 FINE CHEMICALS Apr. 2022

建筑用化学品
氨基化氧化石墨烯/磺化聚苯胺的制备

及在水性环氧防腐涂料的应用

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陈虹雨，于倩倩，杨建军 ，吴庆云，吴明元，张建安，刘久逸
（安徽大学 化学化工学院 安徽省水基高分子材料高性能化工程实验室 安徽 合肥 230601）

摘要：以氯磺酸、苯胺和过硫酸铵为主要原料合成磺化聚苯胺（SPANI），用聚乙烯亚胺（PEI）还原氧化石墨
烯（GO），合成氨基化氧化石墨烯复合材料（PG）。利用 GO 上活性位点，将 SPANI 与 PG 结合，制备了氨基
化氧化石墨烯/磺化聚苯胺复合材料（SPG）。将 SPG 与水性环氧树脂共混制备了水性环氧防腐涂料。通过 FTIR、
XRD 对 SPG 复合材料结构进行了表征。通过盐雾、电化学等实验对水性环氧涂层的防腐性能进行测定，并分
析了涂层的物理性能。结果表明，PEI 上的氨基成功与 GO 结合，SPANI 成功增加了 PG 的层间距。添加 2% SPG
（以环氧树脂和水性环氧固化剂总质量为基准，下同）的水性环氧防腐涂层具有最优的耐腐蚀性，缓蚀效率可
2
2
达 99.19%，与纯水性环氧树脂（EP）相比，腐蚀电流密度从 1080 nA/cm 减小至 307 nA/cm ，腐蚀电压从–0.840 mV
升高至–0.347 mV。
关键词：磺化聚苯胺；氧化石墨烯；水性环氧树脂；防腐；建筑用化学品
中图分类号：TQ637；TG174.4 文献标识码：A 文章编号：1003-5214 (2022) 04-0837-08

Preparation of amino-functionalized graphene oxide/sulfonated polyaniline and
its application in waterborne epoxy anticorrosive coatings

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CHEN Hongyu, YU Qianqian, YANG Jianjun , WU Qingyun,
WU Mingyuan, ZHANG Jian'an, LIU Jiuyi
(College of Chemistry and Chemical Engineering, Engineering Laboratory of High Performance Waterborne Polymer
Materials of Anhui Province, Anhui University, Hefei 230601, Anhui, China)

Abstract: Sulfonated polyaniline (SPANI) was synthesized from chlorosulfonic acid, aniline and
ammonium persulfate. Amino-functionalized graphene oxide composite (PG) was obtained by reduction
graphene oxide (GO) with polyethyleneimine (PEI). Amino-functionalized graphene oxide/sulfonated
polyaniline composite (SPG) was prepared by combining SPANI with PG using the active site on GO. The
waterborne epoxy anticorrosive coating was prepared by blending SPG with waterborne epoxy resin. The
structure of SPG was characterized by FTIR and XRD. The corrosion resistance of waterborne epoxy
coating was measured by salt spray and electrochemical experiments, and the physical properties of the
coating were analyzed. The results showed that the amino group on PEI successfully combined with GO,
and SPANI successfully increased the layer spacing of PG. The waterborne epoxy anticorrosive coating with
2% SPG (based on the total mass of epoxy resin and waterborne epoxy curing agent, the same below) had
the best corrosion resistance. The corrosion inhibition efficiency could reach 99.19%. Compared with those
2
of pure waterborne epoxy resin (EP), the corrosion current density decreased from 1080 nA/cm to
2
307 nA/cm , and the corrosion voltage increased from –0.840 mV to –0.347 mV.
Key words: sulfonated polyaniline; graphene oxide; waterborne epoxy resin; anticorrosion; building
chemicals

收稿日期：2021-08-02; 定用日期：2021-11-03; DOI: 10.13550/j.jxhg.20210781
基金项目：2019 年国家自然科学基金项目（51973001）、安徽省 2017 年度科技计划重点项目（1704a0902018）
作者简介：陈虹雨（1997—），女，硕士生。联系人：杨建军（1960—），男，教授，博士生导师，E-mail：andayjj@163.com。