文献类型：期刊文献

英文题名：Bio-based polybenzoxazine superhydrophobic coating with active corrosion resistance for carbon steel protection

作者：Cao, Yuzhu[1];Chen, Chen[1];Lu, Xin[1];Xu, Dong[1];Huang, Jian[1];Xin, Zhong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Dept Prod Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：405

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：;EI(收录号：20204909568406);WOS:【SCI-EXPANDED(收录号:WOS:000604583200050)】；

基金：This work was financially supported by National Natural Science Foundation of China (21776080) and Innovation Program of Shanghai Municipal Education Commission (2019 01 07 00 02 E00061).

语种：英文

外文关键词：Bio-based benzoxazine; Active anti-corrosion coating; Superhydrophobicity

摘要：A bio-based benzoxazine, synthesized from cardanol, stearylamine and paraformaldehyde, was utilized to develop a superhydrophobic polybenzoxazine double-layer coating with active protection for carbon steel. This double-layered coating consists of an active anti-corrosive primer and a superhydrophobic topcoat. Halloysite nanocontainers with 2-mercaptobenzimidazole were embedded in the primer to achieve active corrosion resistance. The superhydrophobic topcoat constructed of low-surface-energy polybenzoxazine and amine-modified silica nanoparticles can acquire reinforced passive anticorrosive barrier. The durable double-layer coating could still maintain its superhydrophobicity, even after 60 days of treatment at -20 degrees C or 100 degrees C, or 100 cycles of sandpaper abrasion. More importantly, the electrochemical measurement results indicated that the polybenzoxazine superhydrophobic coating maintained outstanding anti-corrosion performance during 90 days immersion in NaCl solution.