涂料工业 ›› 2019, Vol. 49 ›› Issue (8): 1-9. doi: 10.12020/j.issn.0253-4312.2019.8.1

• 探索开发 •    下一篇

多巴胺改性氧化石墨烯-TiO2纳米复合材料在水性环氧树脂中物理性能和腐蚀动力学研究

朱建康1,王树立1,饶永超*1,白浩然1,冯大成1,赵书华1,李贝贝2   

  1. 1. 常州大学石油工程学院,江苏常州 213016; 2.榆林学院化学与化工学院,陕西榆林 719000
  • 收稿日期:2019-03-06 修回日期:2019-07-08 出版日期:2019-08-01 发布日期:2019-08-01
  • 通讯作者: 饶永超 E-mail:ryc@cczu.edu.cn
  • 基金资助:
    常州市科技计划项目

Study on Physical Properties and Corrosion Kinetics of Dopamine Modified GO-TiO2 Nanocomposites in Waterborne Epoxy Resin

Zhu Jiankang1,Wang Shuli1,Rao Yongchao1,Bai Haoran1, Feng Dacheng1,Zhao Shuhua1,Li Beibei2   

  1. 1. School of Petroleum Engineering,Changzhou University,Changzhou,Jiangsu 213100,China;
    2. School of Chemistry and Chemical Engineering,Yulin University,Yulin,Shaanxi 719000,China
  • Received:2019-03-06 Revised:2019-07-08 Online:2019-08-01 Published:2019-08-01

摘要: 利用多巴胺( DA)改性氧化石墨烯( GO)并将纳米 TiO2负载在氧化石墨烯 GO表面,制备了纳米 PDA@GO-TiO2复合材料。通过 FT-IR、XRD、Raman光谱、 XPS和 TEM等表征手段对纳米 PDA@GO-TiO2复合材料的结构、微观形貌等进行表征分析。采用超声分散与机械搅拌相结合的方法将改性纳米 PDA@GO-TiO2复合材料分散到水性环氧树脂中,制备了纳米 PDA@GO-TiO2复合水性环氧树脂涂层(PGT/WEP)。测试了PGT/WEP涂层的硬度、耐冲击性、附着力等物理性能,并对其电化学性能进行了评价。结果表明:在水性环氧树脂中添加纳米 PDA@GO-TiO2复合材料比在相同百分比下使用 GO或纳米 TiO2的涂层具有更好的物理性能。涂层性能和腐蚀动力学分析表明, PDA改性GO-TiO2作为水性环氧涂料的添加剂具有潜在的应用前景。

关键词: 多巴胺, 氧化石墨烯, 纳米 TiO2, 复合材料, 环氧涂层, 物理性能, 腐蚀

Abstract: A nano-PDA@GO-TiO2 composite was prepared with dopamine(DA)modified graphite oxide(GO)and GO loaded with nano-TiO2. The structure and micro-morphology of the nano-PDA@GO-TiO2 composites was charicterized by FT-IR,XRD,Raman,XPS and TEM.The modified nano-PDA@GO-TiO2 composite was dispersed into waterborne epoxy resinby combination of ultrasonic dispersion and mechanical stirring,to prepare the nano-PDA@GO-TiO2 composite waterborne epoxy resin coatings(PGT / WEP). The physical properties of the coatings film,such as hardness,impact resistance,adhesion were tested and electrochemical properties of PGT/WEP coatings were also evaluated.The results showed thatthe addition of the nano-PDA@GO-TiO2 composite into waterborne epoxy resin provided better physical properties than those of the coatings only using GO or TiO2 under the same percentage.Both the coating film properties and corrosion kinetical analyses indicated that thetechnique of PDA modified GO-TiO2 provided a potential application future as an additive into waterborne epoxy coatings.

Key words: dopamine, graphene oxide, nano-TiO2, composite materials, epoxy coatings, physical properties, corrosion

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