三聚磷酸铝/氧化石墨烯复合材料在水性防腐涂料中的应用

doi:10.12020/j.issn.0253-4312.2019.5.45

涂料工业 ›› 2019, Vol. 49 ›› Issue (5): 45-50. doi: 10.12020/j.issn.0253-4312.2019.5.45

三聚磷酸铝/氧化石墨烯复合材料在水性防腐涂料中的应用

李菁熠 ^1，2，李小瑞 ¹，朱科 ²，王海花 ¹，张盼 ¹

1.陕西科技大学化学化工学院，教育部轻化工助剂化学与技术重点实验室，西安 710021； 2.渭南师范学院，陕西渭南 714099

收稿日期:2018-08-02 修回日期:2019-04-03 出版日期:2019-05-01 发布日期:2019-05-01
通讯作者: 朱科 E-mail:zk_19860508@163.com
作者简介:李菁熠（1989—），女，博士，讲师，研究方向为环保型水基聚合物材料。
基金资助:
陕西省自然科学基金;陕西省重点实验室项目;陕西省军民融合研究基金项目; 陕西省教育厅科研计划项目

Application of Aluminum Triphosphate/Graphene Oxide Nanocomposite in Waterborne Anticorrosive Coating

Li Jingyi ^1，2，Li Xiaorui¹，Zhu Ke²，Wang Haihua¹，Zhang Pan¹

1. Shaanxi University of Science & Technology，Xi’an 710021，China； 2. College of Chemistry and Material， Weinan Normal University，Weinan，Shaanxi 714000，China

Received:2018-08-02 Revised:2019-04-03 Online:2019-05-01 Published:2019-05-01

摘要/Abstract

摘要： 采用球磨分散法制备得到三聚磷酸铝 /氧化石墨烯水性复合防腐浆料（ AlTP/GO）并与水性环氧树脂复配制得纳米复合防腐涂料（ EP-AlTP/GO）。通过场发射扫描电镜（ FE-SEM）观，测到 AlTP/GO可均匀分散到 EP树脂内部。吸水率测试结果表明，氧化石墨烯的引入提高了涂层的耐水性和屏蔽性能；附着强度测试结果表明，三聚磷酸铝可提高涂层在金属基材上的附着强度；电化学测试（Bode）和环境扫描电镜测试（ E-SEM）结果表明， AlTP/GO可有效增强水性环氧涂层对腐蚀介质的屏蔽作用，限制了腐蚀反应的扩散，在 3.5%NaCl水溶液中浸泡 40 d后其低频阻抗达到 7.02×10⁷Ω·cm²，盐雾测试 400 h后金属表面平滑，金属腐蚀未发生明显扩散， EP-AlTP/GO人工破损处周边含氧量低至 15.66%，遏制了氧化铁的形成。

关键词: 氧化石墨烯, 三聚磷酸铝, 防腐, 水性环氧涂料

Abstract: The water-based aluminum triphosphate/graphene oxide composite anticorrosion pigment was prepared by Ball-mill dispersion method, and it was applied to water-based epoxy resin to prepare EP-AlTP/GO nanocomposite coating. AlTP/GO could be evenly dispersed into EP resin which was observed by field emission scanning electron microscopy (FE-SEM). The water absorption test showed that the introduction of graphene oxide improved the water resistance and shielding performance of the coating. The adhesion strength test results showed that aluminum triphosphate improved the adhesion strength of the coating in metal substrate Electrochemical test (Bode) and environmental scanning electron microscopy test (E-SEM) showed that AlTP/GO effectively enhanced the water-based epoxy coating for the shielding effect of corrosion medium and limited the spread of the corrosion reaction. The low frequency impedance was 7.02 x 10⁷ Ω. cm² after immersion at 3.5 wt. % NaCl aqueous solution 40 days, the metal surface was smooth after salt spray test 400h.The EP-AlTP/GO coating showed excellent anticorrosion performance.

Key words: aluminum triphosphate, anticorrosion, waterborne epoxy

中图分类号:

TQ635. 2

李菁熠, 李小瑞, 朱科, 王海花, 张盼. 三聚磷酸铝/氧化石墨烯复合材料在水性防腐涂料中的应用[J]. 涂料工业, 2019, 49(5): 45-50.

Li Jingyi , Li Xiaorui, Zhu Ke, Wang Haihua, Zhang Pan. Application of Aluminum Triphosphate/Graphene Oxide Nanocomposite in Waterborne Anticorrosive Coating[J]. Paint & Coatings Industry, 2019, 49(5): 45-50.

https://www.cn-pci.com/CN/Y2019/V49/I5/45

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