Page 70 - 《精细化工》2020年第7期

第 37 卷第 7 期 精 细 化 工 Vol.37, No.7
202 0 年 7 月 FINE CHEMICALS July 2020

功能材料
老化时间对桥联聚硅氧烷涂层防腐性能的影响

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张 策 ，刘艳琳 ，田小静 ，张万斌 ，张光华
（1. 陕西科技大学 前沿科学与技术转移研究院，陕西省轻化工助剂化学与技术协同创新中心，陕西 西安
710021；2. 陕西科技大学 化学与化工学院，教育部轻化工助剂化学与技术重点实验室，陕西 西安
710021）
摘要：为提高涂层防腐蚀性能，以 3-环氧丙氧丙基三甲氧基硅烷（GPTMS）和 N-(3-三甲氧基硅基丙基)乙二胺
（NTMDA）为原料，经环氧-胺基开环反应得到含羟基有机桥联硅烷前驱体（GN）。然后，前驱体 GN 在乙酸
催化下制得硅烷溶胶。最后，将硅烷溶胶以浸渍-提拉方式沉积在 Q235 钢片上，得到含羟基桥联聚倍半硅氧烷
涂层。用极化曲线和电化学阻抗谱等技术对涂层的防腐蚀性能进行评价，重点探究了胶体老化时间对涂层防腐
蚀性能的影响规律。结果表明：当胶体老化时间为 4 h 时，涂层在低频 0.01 Hz 处的电化学交流阻抗相较于空白
钢片高出 1.5 个数量级，具有优异的防腐蚀性能。另外，涂层附着力级别为 1 级。
关键词：有机桥联聚倍半硅氧烷涂层；溶胶-凝胶法；防腐蚀；功能材料
中图分类号：TQ630 文献标识码：A 文章编号：1003-5214 (2020) 07-1352-07

Effect of aging time on the anticorrosion properties of

organic-bridged polysilsesquioxane coating

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ZHANG Ce , LIU Yanlin , TIAN Xiaojing , ZHANG Wanbin , ZHANG Guanghua
（1. Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Institute of Frontier
Science and Technology Transfer, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China; 2. Key
Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, College of Chemistry
and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China）
Abstract: To improve the anticorrosion performance of coating, a hydroxyl-containing organic-bridged
polysilsesquioxane anticorrosion coating was prepared. Herein, polysilsesquioxane (GN) was synthesized
from (3-glycidyloxypropyl) trimethoxysilane (GPTMS) and N-[3-(trimethoxysilylethyl) ethylenediamine
(NTMDA) through epoxy-amine ring-opening reaction. Then, the precursor GN was catalyzed by acetic
acid to prepare sol. Finally, the hydroxy bridged polysiloxane coating was obtained by depositing the sol on
Q235 steel sheet by dip and pull method. The anticorrosion performances of the coated Q235 steel samples
were investigated by polarization curve and electrochemical impedance spectroscopy. Furthermore, the
effect of aging time on the anticorrosion performance of coating was investigated. When the sol was aged
for 4 h, the prepared coating had excellent anticorrosion performance, the impedance at low frequency of
0.01 Hz increased by 1.5 orders of magnitude in contrast to bare Q235 steel. In addition, the coating
adhesion level was 1.
Key words: organic-bridge polysilsesquioxane coating; sol-gel method; anticorrosion; functional materials

针对金属腐蚀，传统有效的处理方法是通过磷 金属表面镀制一层保护涂层，但是这些处理方式极
化 [1-2] 、电镀 [3-4] 或者使用含铬物质钝化 [5-6] 等方式在 易造成环境和人身安全等问题。随着人们环保意识

收稿日期：2020-01-04; 定用日期：2020-03-13; DOI: 10.13550/j.jxhg.20200011
基金项目：国家自然科学基金项目（11904220，51803111）；陕西省自然科学基础研究计划资助项目（2018JQ5089）；陕西科技大学科
研启动项目（2016BJ-46）
作者简介：张 策（1988—），女，博士，E-mail：zhangce@sust.edu.cn。