王华,李淑英.镀锌钢板表面硅烷膜的制备及性能研究[J].表面技术,2016,45(10):168-172.
WANG Hua,LI Shu-ying.Preparation and Performance of Silane Film on the Surface of Galvanized Steel Sheet[J].Surface Technology,2016,45(10):168-172
镀锌钢板表面硅烷膜的制备及性能研究
Preparation and Performance of Silane Film on the Surface of Galvanized Steel Sheet
投稿时间:2016-05-01  修订日期:2016-10-20
DOI:10.16490/j.cnki.issn.1001-3660.2016.10.026
中文关键词:  镀锌钢  硅烷膜  耐蚀性  稀土盐  缓蚀剂
英文关键词:galvanized steel  silane film  corrosion resistance  ceric salt  corrosion inhibitor
基金项目:大连理工大学退休基金资助项目(DUTTX2013105)
作者单位
王华 大连理工大学 化工学院,辽宁 大连 116023 
李淑英 大连理工大学 化工学院,辽宁 大连 116023 
AuthorInstitution
WANG Hua School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China 
LI Shu-ying School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China 
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中文摘要:
      目的 提高镀锌钢板的耐腐蚀性能。方法 在镀锌钢表面制备双-[γ-(三乙氧基硅)丙基]四硫化物(BTESPT)和乙烯基三乙氧基硅烷(VTES)单一硅烷膜和双硅烷膜,并掺杂缓蚀剂和稀土盐改性制备复合膜,用动电位极化曲线测试研究各种硅烷膜在3.5%NaCl 溶液中对镀锌钢的腐蚀防护性能。结果 VTES 硅烷膜的最佳工艺条件为:V(VTES):V(乙醇):V(水)=7:30:70,pH=4.5,水解2 d,成膜时间20 min,固化温度100 ℃,固化时间30 min,VTES 硅烷膜耐蚀性比BTESPT 硅烷膜略差,但更经济。双层硅烷膜能够提高物理屏障作用,可以进一步增加耐蚀性。当铈盐和硅烷混合水解再成膜时,硅烷膜的耐蚀性最好。在硅烷水解溶液中加入0.01 mol/L 的吡咯,可以制得耐蚀性优良的缓蚀剂掺杂硅烷摸。结论 铈盐和吡咯改性硅烷膜对镀锌钢具有良好的保护作用。
英文摘要:
      The work aims to improve the corrosion resistance of galvanized steel sheet. Single silane film and bilayer silane film of bis-[γ (triethoxy silicon) propyl] tetrasulfide (BTESPT) and vinyl triethoxy silane (VTES) were prepared on galvanized steel surface. The composite film was prepared by mofification and doping with corrosion inhibitor and rare earth salt. The corrosion protection performance of various silane films for galvanized steel in 3.5% NaCl solution was evaluated by potentiodynamic polarization curve test. The optimum technological conditions of single VTES silane film were: V (VTES):V (ethanol):V (water)=7:30:70, pH=4.5, hydrolysis of 2 days, film-forming time of 20 min, curing temperature of 100 ℃ and curing time of 30 min. The corrosion resistance of VTES silane film was slightly lower than that of BTESPT silane film, but it was more economic. Bilayer silane film could improve physical barrier function so as to further increase the corrosion resistance. When ceric salt and silane were hydrolyzed together and then formed film again, the corrosion resistance of the silane film was the best. Addition of 0.01 mol/L pyrrole to silane hydrolysis solution could produce silane film of excellent corrosion resistance doped with corrosion inhibitor. Ceric salt- and pyrrole modified silane film provides favorable protection for galvanized steel.
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