以乙烯基三甲氧基硅烷(VMS)、γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(MPMS)和γ-环氧丙基醚基三甲氧基硅烷(GPMS)三种硅烷偶联剂为前驱体,制备了正硅酸乙酯(TEOS)改性的有机-无机杂化膜.采用动电位极化曲线测试了膜层的防腐性能,考察了TEOS含量对其的影响.以腐蚀电流为指标,比较了三种体系杂化膜的防腐能力.利用盐雾试验和电子扫描照片研究了杂化膜耐长久腐蚀行为.结果表明,杂化膜的存在有效地抑制了腐蚀反应的发生,VMS和MPMS膜层可使腐蚀电流减小300多倍.当TEOS含量为15%～20%(质量分数,下同)时,膜层的腐蚀电流最小.比较而言,VMS-TEOS膜层的耐蚀能力最强,GPMS-TEOS膜层最差.VMS膜层和VMS+20%TEOS膜层耐盐雾腐蚀的能力最强,总体来说,杂化膜耐长久腐蚀的能力较差.
参考文献
| [1] | CERVEAUG;ROBERT CORRIU J P.Somerecentdevelopmentsofpolysilsesquioxaneschemistryformaterialscience[J].Coordination Chemistry Reviews,1998(178-180):1051-1071. |
| [2] | Williams RJJ.;Ishikawa Y.;Nonami H.;Mauri AN. Riccardi CC.;Erra-Balsells R. .UV-MALDI-TOF and ESI-TOF mass spectrometry characterization of silsesquioxanes obtained by the hydrolytic condensation of (3-glycidoxypropyl)-trimethoxysilane in an epoxidized solvent[J].Macromolecular chemistry and physics,2001(11):2425-2433. |
| [3] | Chou TP.;Limmer SJ.;Seraji S.;Wu Y.;Forbess MJ. Nguyen C.;Cao GZ.;Chandrasekaran C. .Organic-inorganic hybrid coatings for corrosion protection[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2001(2/3):153-162. |
| [4] | Y.Joshua Du;Matt Damron;Grace Tang;Haixing Zheng;C.-J.Chu;Joseph H.Osborne .Inorganic/organic hybrid coatings for aircraft aluminum alloy substrates[J].Progress in Organic Coatings: An International Review Journal,2001(4):226-232. |
| [5] | Metroke TL.;Kachurina O.;Knobbe ET. .Spectroscopic and corrosion resistance characterization of GLYMO-TEOS Ormosil coatings for aluminum alloy corrosion inhibition [Review][J].Progress in Organic Coatings: An International Review Journal,2002(4):295-305. |
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