In this paper, polythiophene–graphene oxide (PTh–GO) hybrids-filled epoxy (0–2 wt%) coatings with enhanced mechanical and anti-corrosion properties applied as an advanced coating. The chemical structure, morphology, toughness, adhesion to the substrate and anticorrosive properties of these coatings were studied. FTIR analysis and morphological investigations (XRD, SEM and TEM) confirmed that PTh synthesized in the presence of GO and PTh nanoparticles located on the surface of GO and exfoliated structure were obtained. Potentiodynamic polarization, EIS and OCP analysis confirmed better anti-corrosion properties of PTh–GO hybrids-filled epoxy coatings than neat epoxy and GO- or PTh-filled epoxy. Adhesion analysis results demonstrated that epoxy/PTh–GO nanocomposites better adhesion to the mild steel and only 5% of the coating was removed during analysis. Izod test shows that addition of 0.5 wt% PTh–GO to epoxy lead to 61% improvement of impact strength of epoxy coating.

中文翻译：

---

具有先进性能的聚噻吩/氧化石墨烯/环氧纳米复合涂层的制备和表征

在本文中，聚噻吩-氧化石墨烯 (PTh-GO) 混合填充环氧树脂 (0-2 wt%) 涂层具有增强的机械和防腐性能，用作高级涂层。研究了这些涂层的化学结构、形态、韧性、对基材的附着力和防腐性能。FTIR 分析和形态学研究（XRD、SEM 和 TEM）证实，在 GO 存在下合成了 PTh，并获得了位于 GO 表面的 PTh 纳米颗粒和剥离结构。动电位极化、EIS 和 OCP 分析证实了 PTh-GO 杂化填充环氧树脂涂层的抗腐蚀性能优于纯环氧树脂和 GO 或 PTh 填充环氧树脂。附着力分析结果表明，环氧树脂/PTh-GO 纳米复合材料对低碳钢的附着力更好，并且在分析过程中仅去除了 5% 的涂层。Izod 试验表明，在环氧树脂中加入 0.5 wt% PTh-GO 可使环氧树脂涂层的冲击强度提高 61%。