氮磷共掺杂石墨烯的制备及水性复合涂层的耐蚀性能  

Preparation of Nitrogen and Phosphorus Co-doped Graphene Oxide and Corrosion Resistance of Waterborne Composite Coatings NPGO/Epoxy Resin

作　　者：李玉峰[1,2] 冯峰 刘世博 刘丽爽 高晓辉 LI Yufeng;FENG Feng;LIU Shibo;LIU Lishuang;GAO Xiaohui(College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China;College of Light Industry and Textile,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006 [2]齐齐哈尔大学轻工与纺织学院,齐齐哈尔161006

出　　处：《材料研究学报》2024年第11期861-871,共11页Chinese Journal of Materials Research

基　　金：黑龙江省省属高等学校基本科研业务费科研项目(135509128)。

摘　　要：以氧化石墨烯(GO)为原料,植酸(PA)为磷源,氨水(NH_(3)·H_(2)O)为氮源,采用低温溶液法制备氮磷石墨烯(NPGO),并以水性环氧树脂(EP)为成膜物制备氮磷石墨烯/环氧树脂(NPGO/EP)水性复合涂层。采用FTIR、XPS、XRD、SEM和TEM对NPGO的结构、形貌进行了表征。通过接触角测试、电化学测试和盐雾实验等研究复合涂层的耐蚀性能。结果表明:相比于EP涂层、GO/EP复合涂层、含磷石墨烯/环氧树脂(PGO/EP)复合涂层和含氮石墨烯/环氧树脂(NGO/EP)复合涂层,NPGO/EP复合涂层对金属的保护作用更好;当NPGO的添加量为1.5%(质量分数)时,电化学阻抗达到4.85×10^(8)Ω·cm^(2),盐雾实验480 h后才出现轻微腐蚀,表现出较好的防腐蚀性能。N and P co-doped graphene oxide(NPGO)was prepared by low temperature solution method with graphene oxide(GO)as raw material,phytic acid(PA)as P source,and aqueous ammonia solution(NH_(3)·H_(2)O)as N source,and then,N and P co-doped graphene/epoxy resin(NPGO/EP)water-borne composite coating was prepared by using waterborne epoxy resin(EP)as the film former.The structure and morphology of NPGO were characterized by FTIR,XPS,XRD,SEM and TEM.The corro-sion resistance of composite coatings was assessed by contact angle measurement,electrochemical measurement and salt spray test.The results show that NPGO/EP composite coating has better metal protection effect than pure EP coating,GO/EP composite coating,as well as single P doped graphene/ep-oxy resin(PGO/EP)composite coating and single N doped graphene/epoxy resin(NGO/EP)composite coating.NPGO/EP composite coating showing good corrosion resistance when the addition amount of NPGO is 1.5%(mass fraction):the electrochemical impedance reaches 4.85×10^(8)Ω·cm^(2),and slight rust marks appear only after 480 h of salt spray test.

关 键 词：材料失效与保护 耐蚀性能 氮磷石墨烯 水性环氧树脂 复合涂层 

分 类 号：TB304[一般工业技术—材料科学与工程]