CAJ | 학술논문

在 LY12铝合金表面制备了一层硅烷膜，研究了硅烷膜对铝合金表面富镁铝环氧涂层性能的影响。硅烷处理后，形成了硅烷膜与基体之间Si-O-Al共价键以及硅烷膜内部的Si-O-Si 结构，而硅烷膜中未成键的硅醇基团-OH 以及 R-的环氧基团与涂层中的有机组分反应成键或通过范德华力发生交联互穿，使铝合金基体与环氧镁铝复合涂层之间形成更加牢固的交联互穿网络结构（IPN），镁铝复合涂层在LY12铝合金基体上的附着力明显提高。马丘测试和电化学阻抗测试结果表明，硅烷处理改善了LY12铝合金表面镁铝复合涂层的整体屏蔽性能，使涂层体系的保护效果显著提高，保护时间延长。
재 LY12려합금표면제비료일층규완막，연구료규완막대려합금표면부미려배양도층성능적영향。규완처리후，형성료규완막여기체지간Si-O-Al공개건이급규완막내부적Si-O-Si 결구，이규완막중미성건적규순기단-OH 이급 R-적배양기단여도층중적유궤조분반응성건혹통과범덕화력발생교련호천，사려합금기체여배양미려복합도층지간형성경가뢰고적교련호천망락결구（IPN），미려복합도층재LY12려합금기체상적부착력명현제고。마구측시화전화학조항측시결과표명，규완처리개선료LY12려합금표면미려복합도층적정체병폐성능，사도층체계적보호효과현저제고，보호시간연장。
A silane film was formed on LY12 aluminum alloy and the effect of silane pretreatment on the performance of a Mg-Al rich primer on LY12 alloy were studied. After silane treatment, Si-O-Al covalent bonds were formed between aluminum alloy substrate and silane film and Si-O-Si structure was formed in silane film. In addition, silanol groups-OH in free form and epoxy groups from silane film might react with organic fractions in epoxy coating to form cross-linked bonding, and these two types of groups were bonded through van de Waals force, forming an interpenetrating polymer network (IPN) across the interface and providing improved adhesion between aluminum substrate and silane film. Machu test and electrochemical measurements indicated that silane pre-treatment significantly improved the performance of the Mg-Al rich primer on LY12 alloy, which was attributed to strengthened barrier effect of the coating system.