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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 ,
  • 王树立 ,
  • 饶永超 ,
  • 白浩然 ,
  • 冯大成 ,
  • 赵书华 ,
  • 李贝贝
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  • 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

  网络出版日期: 2019-08-01

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

  • SHU Jian-Kang ,
  • WANG Sun-Wei ,
  • RAO Yong-Tiao ,
  • BO Hao-Ran ,
  • FENG Tai-Cheng ,
  • DIAO Shu-Hua ,
  • LI Bei-Bei
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  • 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 date: 2019-03-06

  Revised date: 2019-07-08

  Online 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。

本文引用格式

朱建康 , 王树立 , 饶永超 , 白浩然 , 冯大成 , 赵书华 , 李贝贝 . 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[J]. 涂料工业, 2019 , 49(8) : 1 -9 . DOI: 10.12020/j.issn.0253-4312.2019.8.1

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.

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