文章摘要
邹明明,李小瑞,沈一丁,王海花.GS改性氧化石墨烯/聚苯胺防腐材料的制备及性能[J].精细化工,2018,35(5):0
GS改性氧化石墨烯/聚苯胺防腐材料的制备及性能
Preparation of Gemini Surfactant Modified Graphene Oxide/Polyaniline Composite and the Application in Anticorrosive Coating
投稿时间:2017-05-02  修订日期:2017-07-22
DOI:
中文关键词: 双子表面活性剂  氧化石墨烯  聚苯胺  防腐性能
英文关键词: gemini surfactants  graphene oxide  polyaniline  anticorrosion properties
基金项目:国家自然科学基金(21544011),教育部留学回国人员科研启动基金(20121707);陕西省教育厅重点实验室项目(14JS014)
作者单位E-mail
邹明明 陕西科技大学 877499703@qq.com 
李小瑞 陕西科技大学  
沈一丁 陕西科技大学  
王海花 陕西科技大学  
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中文摘要:
      用双子表面活性剂(GS)通过静电作用对氧化石墨烯(GO)进行插层改性制备了改性氧化石墨烯(GSGO),再以苯胺(An)为单体,过硫酸铵(APS)为引发剂,通过原位聚合法制备了GSGO/PANI复合材料。最后利用GSGO/PANI与水性醇酸树脂(WAR)共混得到了GSGO/PANI/WAR防腐涂层。采用FTIR,Raman,XRD和SEM等测试手段对GSGO和复合材料的形貌、结构进行了表征,结果表明,GS插入到GO的片层中,使得GSGO的层间距增大,且棒状的聚苯胺分散在GO的片层中,形成片状插层结构。动电位极化和电化学阻抗谱测试表明,GSGO/PANI/WAR 复合涂层比纯WAR涂层具有更高的耐腐蚀性能。当复合涂层中w(GSGO)=10% 时,涂层的耐腐蚀性能最好。腐蚀电流密度从9.82?10-6A/cm2减小至1.08?10-6A/cm2,腐蚀电从-0.56V增加到-0.28V,|Z|值可达到5.25?106 ohm.cm2。
英文摘要:
      Modified graphene oxide(GSGO) was prepared by intercalation of graphene oxide(GO) via Gemini surfactants(GS), then composites of GSGO/PANI were prepared by in situ polymerization method using aniline(An) and GSGO as raw materials,ammonium persulfate (APS) as initiator.Finally, the GSGO/PANI/WAR anti-corrosion coating was obtained by blending with GSGO/PANI and WAR. The structure and morphology of GSGO and composites were characterized by FT-IR, Raman, XRD and SEM. The results showed that GS inserted into the GO ,the layers spacing of GSGO were increased and rod-like polyaniline dispersed in GO sheets, forming flaky intercalation structure.The Tafel polarization and electrochemical impedance spectrum test show that the GSGO/PANI/WAR composites coating had higher corrosion resistance than pure WAR coating. When the mass fraction of GSGO were 10 %, the corrosion resistance of coating is the best. The corrosion current density was decreased from 9.82 ? 10-6 A/ cm2 to 1.08 ? 10-6 A/ cm2, the corrosion potential was increased from -56V to -0.28V, | Z | values can reach 5.25 ? 106 ohm.cm2.
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