.24 北京科技大学学报 第30卷 5000r 1600 1400 --5h 4500片 --16h 4000 -s-5h 1200 a-48h 3500 -e-16h --48h (:AZ 1000 3000 800 2500 g 2000 600 1500 400 1000 200 500 0 0 10-2 101109 101021010 105 -50010210100"10102101010 频率Hz 频率Hz (a)甲醇与水的体积比65:35 (b)甲醇与水的体积比85:15 图4两种水解溶液制备的硅烷处理层的电化学阻抗谱 Fig.4 Electrochemistry impedance spectra of silane treating films prepared in two different solution 能好的体系,其防腐性能也好,对于钢/硅烷处理层 烷处理可以显著提高涂层/钢的粘接强度 /环氧树脂体系,当环氧树脂的厚度相同时,体系的 (2)合理控制硅烷水解与缩合的程度,可使硅 防腐性能主要取决于硅烷处理层的防腐性能,对甲 烷处理层的性能得到优化, 醇:水为65:35,不同水解时间的试样,其|Z(频率 (3)对于钢/硅烷处理层/环氧树脂体系,涂层 为100m伍)均明显低于甲醇:水为85:15的试样 粘结性能与涂层防腐性能之间并不直接相关 (图5)·如果将不同的水解溶液配比看作是不同的 表面处理工艺,那么甲醇:水为85:15工艺制备的环 参考文献 氧涂层试样防腐性能较好,这与粘结性能的规律正 [1]Harun M K.Lyon S B.Marsh J.A surface analytical study of 好相反(图2),说明影响涂层粘接性能和影响涂层 functionalized mild steel for adhesion promotion of organic coat- ings.Prog Org Coat,2003.46:21 防腐性能的因素并不同.不同水解溶液配比对硅烷 [2]Hansal W E.Hansal S.Investigation of polysiloxane coatings as 处理层防腐性能的影响规律,有望通过进一步实验 corrosion inhibitors of zine surfaces.Surf Coat Technol,2006. (如硅烷处理层厚度测试、光谱分析和结构分析)加 200:3056 以阐明 [3]Khramov A N,Balbyshev V N,Voevodin NN.Nanostructured solgel derived conversion coatings based on epoxy-and amino- 4000 -●一甲醇与水体积比65:35 silanes.Prog Org Coat.2003.47:207 3500 -▲一甲醇与水体积比85:15 [4]Zucchi F,Grassi V.Frignani A.Inhibition of copper corrosion by 3000 silane coatings.Corras Sci.2004.46:2853 2500 [5]Trabelsi W.Cecilio P,Ferreira M G.Electrochemical assessment 2000 of the self-healing properties of Ce-doped silane solutions for the 1500 pretreatment of galvanised steel substrates.Prog Org Coat, 1000 2005,54.276 500 [6]Lee CC.Mansfeld F.Automatic classification of polymer coating 0 quality using artificial neural networks.Corros Sci,1999.41; 10 20 30 40 50 水解时间h 439 [7]Funke W,Arslanov VV.The effect of water on the adhesion of 图5两种水解溶液不同水解时间试样在频率为100m出下的|Z引 organic coatings on aluminium.Prog Org Coat,1988.15:355 Fig.5 Influence of hydrolyzing time on under 100mz in two [8]Marsh J.Scantlebury J D.Lyon B.The effect of surface/ different solution primer treatments on the performance of alkyd coated steel.Cor- ros Sei,2001,43(5):829 4结论 (1)如果工艺参数选择得当,对钢表面进行硅图4 两种水解溶液制备的硅烷处理层的电化学阻抗谱 Fig.4 Electrochemistry impedance spectra of silane treating films prepared in two different solution 能好的体系其防腐性能也好.对于钢/硅烷处理层 /环氧树脂体系当环氧树脂的厚度相同时体系的 防腐性能主要取决于硅烷处理层的防腐性能.对甲 醇∶水为65∶35不同水解时间的试样其|Z|(频率 为100mHz)均明显低于甲醇∶水为85∶15的试样 (图5).如果将不同的水解溶液配比看作是不同的 表面处理工艺那么甲醇∶水为85∶15工艺制备的环 氧涂层试样防腐性能较好这与粘结性能的规律正 好相反(图2)说明影响涂层粘接性能和影响涂层 防腐性能的因素并不同.不同水解溶液配比对硅烷 处理层防腐性能的影响规律有望通过进一步实验 (如硅烷处理层厚度测试、光谱分析和结构分析)加 以阐明. 图5 两种水解溶液不同水解时间试样在频率为100mHz 下的|Z| Fig.5 Influence of hydrolyzing time on|Z|under100mHz in two different solution 4 结论 (1) 如果工艺参数选择得当对钢表面进行硅 烷处理可以显著提高涂层/钢的粘接强度. (2) 合理控制硅烷水解与缩合的程度可使硅 烷处理层的性能得到优化. (3) 对于钢/硅烷处理层/环氧树脂体系涂层 粘结性能与涂层防腐性能之间并不直接相关. 参 考 文 献 [1] Harun M KLyon S BMarsh J.A surface analytical study of functionalized mild steel for adhesion promotion of organic coatings.Prog Org Coat200346:21 [2] Hansal W EHansal S.Investigation of polysiloxane coatings as corrosion inhibitors of zinc surfaces.Surf Coat Technol2006 200:3056 [3] Khramov A NBalbyshev V NVoevodin N N.Nanostructured so-l gel derived conversion coatings based on epoxy-and aminosilanes.Prog Org Coat200347:207 [4] Zucchi FGrassi VFrignani A.Inhibition of copper corrosion by silane coatings.Corros Sci200446:2853 [5] Trabelsi WCecilio PFerreira M G.Electrochemical assessment of the self-healing properties of Ce-doped silane solutions for the pre-treatment of galvanised steel substrates. Prog Org Coat 200554:276 [6] Lee C CMansfeld F.Automatic classification of polymer coating quality using artificial neural networks.Corros Sci199941: 439 [7] Funke WArslanov V V.The effect of water on the adhesion of organic coatings on aluminium.Prog Org Coat198815:355 [8] Marsh JScantlebury J DLyon S B.The effect of surface/ primer treatments on the performance of alkyd coated steel.Corros Sci200143(5):829 ·24· 北 京 科 技 大 学 学 报 第30卷