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涂料工业  2018, Vol. 48 Issue (9): 6-13    https://doi.org/10.12020/j.issn.0253-4312.2018.9.6
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疏水改性氧化石墨烯/环氧复合涂料的制备及其防腐性能研究
卞政,梅俊龙,王瑾,方永勤
常州大学设计研究院,江苏常州 213164
Preparation and Anti-corrosion Property of Hydrophobic Modified Graphene Oxide/Epoxy Composites
Bian Zheng, Mei Junlong, Wang Jin, Fang Yongqin
Institute of Design and Research, Changzhou University, Changzhou, Jiangsu 213164, China
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摘要 以叔碳酸缩水甘油酯(E-10P)为疏水单体,通过环氧与羧酸的共价键合,在氧化石墨烯(GO)表面引入疏水性支化碳链,改性后的氧化石墨烯(F-GO)作为防锈填料加入环氧树脂中得到F-GO/环氧复合涂料。通过红外光谱、拉曼光谱、X-射线衍射、热重分析对F-GO的结构进行表征,通过场发射扫描电镜观察F-GO及复合涂料的微观形貌,并通过电化学阻抗、极化曲线和盐雾试验测试了复合涂料的防腐性能。结果表明:E-10P可利用其空间效应阻碍片层的团聚;疏水效应可提高F-GO的热稳定性和与环氧树脂的相容性;与空白环氧涂层相比,当复合涂料中F-GO质量分数为02%时,厚度为20~25 μm的防腐涂层的腐蚀电流可由2358 6×10-6 A/cm2下降至2000 2×10-11 A/cm2,阻抗值可由11×107 Ω·cm2 提升至69×109 Ω·cm2。
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卞政
梅俊龙
王瑾
方永勤
关键词:  复合涂层  环氧  氧化石墨烯  疏水  防腐    
Abstract: Abstract:A highly branched hydrophobic carbon chain is introduced on the surface of graphene oxide(GO) by the covalent bonding of epoxy and carboxylic acid, wherein, glycidyl ester (CarduraTM E-10P) is used as a hydrophobic monomer. The modified graphene oxide(F-GO) is added as an anti-rust filler to epoxy resin to obtain the F-GO/epoxy composite material. Structural properties are characterized by Fourier transform infrared spectrometer (FT-IR), Raman spectroscopy, X-ray diffraction (XRD) and Thermal gravimetric (TG). In addition, morphological properties are observed with Field-emission scanning electron microscopy (FE-SEM). The corrosion behaviors of the coated steel substrates are evaluated by Neutral salt spray (NSS) and Electrochemical measurements. The results show that E-10P can inhibit the agglomeration of lamellae by its steric effect. The hydrophobic effect enhances the thermal stability of F-GO and compatibility of epoxy resin. When the additive amount of the composite is 02%, the corrosion current of anti-corrosive coating with a thickness of 20-25 μm can be reduced from 2358 6×10-6 A/cm2 to 2000 2×10-11 A/cm2 and the impedance value can be increased from 11×107 Ω·cm2 to 69×109 Ω·cm2.
Key words:  acomposite coating    epoxy    graphene oxide    hydrophobic    nti-corrosion
收稿日期:  2018-03-09      修回日期:  2018-08-02           出版日期:  2018-09-01      发布日期:  2018-09-13      期的出版日期:  2018-09-01
基金资助: 江苏省产学研前瞻性联合研究项目;常州市科技支撑计划(工业)
通讯作者:  方永勤    E-mail:  f13506119729@cczu.edu.cn
引用本文:    
卞政 梅俊龙 王瑾 方永勤. 疏水改性氧化石墨烯/环氧复合涂料的制备及其防腐性能研究[J]. 涂料工业, 2018, 48(9): 6-13.
Bian Zheng, Mei Junlong, Wang Jin, Fang Yongqin. Preparation and Anti-corrosion Property of Hydrophobic Modified Graphene Oxide/Epoxy Composites. Paint & Coatings Industry, 2018, 48(9): 6-13.
链接本文:  
http://manu65.magtech.com.cn/Jwk3_tlgy/CN/10.12020/j.issn.0253-4312.2018.9.6  或          http://manu65.magtech.com.cn/Jwk3_tlgy/CN/Y2018/V48/I9/6
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