通过单体设计构建具有优异防腐性能的新型聚苯并恶嗪涂层前体。

Construction of novel polybenzoxazine coating precursor exhibiting excellent anti-corrosion performance through monomer design.

作者信息

Aly Kamal I, Amer Amer A, Mahross Mahmoud H, Belal Mostafa R, Soliman Ahmed M M, Mohamed Mohamed Gamal

机构信息

Polymer Research Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt.

Department of Chemistry, Faculty of Science, Sohag University, Sohag 82524, Egypt.

出版信息

Heliyon. 2023 May 1;9(5):e15976. doi: 10.1016/j.heliyon.2023.e15976. eCollection 2023 May.

DOI:10.1016/j.heliyon.2023.e15976

PMID:37215883

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10192533/

Abstract

In this study, we utilized salicylaldehyde (SA) and p-toluidine (Tol-NH) to synthesize 2-(Z)[(4-methylphenyl)imino]methylphenol (SA-Tol-SF), which was then reduced to 2-[(4-methylphenyl)amino]methylphenol, producing SA-Tol-NH. SA-Tol-NH was further reacted with formaldehyde to create SA-Tol-BZ monomer. Poly(SA-Tol-BZ) was produced by thermally curing it at 210 °C, after synthesizing it from SA-Tol-BZ. The chemical structure of SA-Tol-BZ was analyzed using various analytical techniques such as FT-IR, H NMR spectroscopy, and C NMR spectroscopy TGA, SEM, DSC, and X-ray analyses. Afterward, we applied the obtained poly(SA-Tol-BZ) onto mild steel (MS) using thermal curing and spray coating techniques. To examine the anticorrosion attributes of MS coated with poly(SA-Tol-BZ), electrochemical characterization was employed. The study proved that poly(SA-Tol-BZ) coating had a high level of effectiveness in preventing corrosion on MS, with an efficacy of 96.52%, and also exhibited hydrophobic properties.

摘要

在本研究中，我们利用水杨醛（SA）和对甲苯胺（Tol-NH）合成了2-(Z)[(4-甲基苯基)亚氨基]甲基苯酚（SA-Tol-SF），然后将其还原为2-[(4-甲基苯基)氨基]甲基苯酚，制得SA-Tol-NH。SA-Tol-NH进一步与甲醛反应生成SA-Tol-BZ单体。由SA-Tol-BZ合成聚(SA-Tol-BZ)后，在210℃下对其进行热固化。使用傅里叶变换红外光谱（FT-IR）、氢核磁共振光谱（H NMR）、碳核磁共振光谱（C NMR）、热重分析（TGA）、扫描电子显微镜（SEM）、差示扫描量热法（DSC）和X射线分析等各种分析技术对SA-Tol-BZ的化学结构进行了分析。之后，我们使用热固化和喷涂技术将制得的聚(SA-Tol-BZ)涂覆在低碳钢（MS）上。为了研究涂覆有聚(SA-Tol-BZ)的低碳钢的防腐性能，采用了电化学表征方法。研究证明，聚(SA-Tol-BZ)涂层在防止低碳钢腐蚀方面具有很高的有效性，防护效率为96.52%，并且还表现出疏水性能。