碳素钢表面有机硅复合涂层的制备及其防腐性能
Preparation and Anti-corrosion Performance of Organosilicon Composite Coatings on Carbon Steel
卜锦超 1沈佩浒 1唐中华 2徐凯 2何财兵 3李贺东 1王敏嘉1
作者信息
- 1. 浙江理工大学 建筑工程学院, 浙江 杭州 310018
- 2. 浙江临金高速公路有限公司, 浙江 杭州 310024
- 3. 浙江玉釉新材料科技有限公司, 浙江 杭州 310051
- 折叠
摘要
以正硅酸乙酯(TEOS)和甲基三氯硅烷(MTS)为前驱体,铁铬合金和石墨粉为颜填料,通过湿化学法在碳素钢表面制备轻薄的有机硅复合涂层.结果表明,以Si—O—Si键交联的有机硅体系由MTS和TEOS水解聚合而来,无机相作均匀填充.复合涂层平整致密,铅笔硬度为7 H,附着力为1级,水接触角为73°.在3.5 wt%NaCl溶液中浸泡60 d后,腐蚀电流密度增大,硬度和附着力下降,但仍高于同期制作的纯涂层,这是由于填料的填充作用增强了涂层的阻隔效应、硬度和附着力.
Abstract
Thin organosilicon composite coatings were prepared on carbon steel surface through wet chemical method,employing methyl trichlorosilane(MTS)and tetraethyl orthosilicate(TEOS)as precursors,along with Fe-Cr alloys and graphite powder as pigments.The results show that the organosilicon system bonded by the Si—O—Si bond is hydrolyzed and polymerized by MTS and TEOS,resulting in uniform filling of inorganic phases within the network structure.The composite exhibits a flat and dense morphology,with the pencil hardness of 7 H,the adhesion of Level 1,and the water contact angle of 73°.After soaking in a 3.5 wt%NaCl solution for 60 days,there is an increase in corrosion current density while the hardness and adhesion decrease.However,it still remain higher than those observed on pure coated steel during the same period,because the filling effect of fillers enhances the barrier effect,hardness and adhesion.
关键词
轻薄涂层/有机硅复合体系/腐蚀防护/腐蚀行为Key words
Thin coatings/Organosilicon composite system/Corrosive protection/Corrosion behavior引用本文复制引用
基金项目
浙江省博士后科研择优资助项目(ZJ2020030)
浙江理工大学科研业务费专项(2021Q038)
浙江省交通投资集团有限公司科技项目(202001)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据