硅烷自组装膜对碳钢表面的改性及缓蚀性能研究  

Modification and inhibition properties of MPTS self-assembled monolayer on carbon-steel

作　　者：邢锦娟[1] 俞卓汗[1] 张思倩[1] 刘琳[1] 钱建华[1] 

机构地区：[1]渤海大学应用化学辽宁省高校重点实验室,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2015年第1期58-62,共5页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金(No:21176030);辽宁省优秀人才支持计划(No:LR2011033)

摘　　要：采用分子自组装技术在碳钢表面制备了3-巯基丙基三甲氧基硅烷自组装膜(MPTS-SAM).通过原子力显微镜(AFM)观察了碳钢表面成膜过程,并对其表面粗糙度进行了分析;利用动电位极化曲线研究了该自组装膜对碳钢的缓蚀性能.结果显示:该自组装膜对碳钢具有良好的缓蚀性能,且经MPTS自组装分子膜改性处理的碳钢表面较平滑,粗糙度明显降低;硅烷分子的水解程度对自组装有一定影响,且随着组装时间的延长,自组装膜更完整,对碳钢的缓蚀效率更高.Self -assembled monolayer of 3 -mercaptopropyl trimethoxysilane （ MPTS ） was fabricated on carbon-steel surface by molecular self -assembly process .Atomic force microscope （ AFM） was used to char-acterize the surface morphology of the film , while the corrosion -inhibitive properties of carbon steel were evalua-ted by potentiodynamic polarization techniques in the 0 .5 mol？ L-1 HCl solution .The results show that the self-assembled monolayer of MPTS has a good inhibition performance on carbon steel , and the carbon steel surface modified by MPTS self-assembled monolayer is uniform and relatively smooth , while the surface roughness sig-nificantly reduced .In addition , the degree of hydrolysis of the silane molecules has a certain impact on the MPTS self-assembly .The SAM is more complete , and its inhibition efficiency increases with assembling time exten-ding.

关 键 词：3-巯基丙基三甲氧基硅烷 自组装膜 碳钢 缓蚀 

分 类 号：O614.33[理学—无机化学]