To inhibit the corrosion of carbon steel, epoxy polymer coatings were developed using cellulose nanofibers (CNF) and the corrosion inhibitors sodium nitrate (SN) and sodium oleate (SO). The synergistic effects of SN and SO were confirmed by measuring the polarization curves of bare carbon steel in a corrosive solution, which demonstrated the effectiveness of a first action by SN being followed by a second action by SO. In order to control the release rates for the corrosion inhibitors from polymer coatings, the addition of CNF in the polymer was effective. The optimum combination of SN, SO and CNF in the polymer coatings was 8% of SN in the first layer, then 8% and 0.5% of SO and CNF, respectively, in the second layer, which resulted in excellent self-healing properties. The controlled release for the synergistic effect of the corrosion inhibitors allowed them to generate a healing film on the damaged portions of carbon steel.

中文翻译：

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通过自修复聚合物涂层中的纤维素纳米纤维释放腐蚀抑制剂，防止碳钢腐蚀，从而产生协同效应


为了抑制碳钢的腐蚀，使用纤维素纳米纤维 （CNF） 和腐蚀抑制剂硝酸钠 （SN） 和油酸钠 （SO） 开发了环氧聚合物涂层。通过测量裸碳钢在腐蚀性溶液中的极化曲线证实了 SN 和 SO 的协同效应，这证明了 SN 的第一个作用之后 SO 的第二个作用的有效性。为了控制聚合物涂层中缓蚀剂的释放速率，在聚合物中添加 CNF 是有效的。聚合物涂层中 SN、SO 和 CNF 的最佳组合是第一层 SN 的 8%，然后第二层分别为 SO 和 CNF 的 8% 和 0.5%，这导致了优异的自修复性能。缓蚀剂协同作用的受控释放使它们能够在碳钢的受损部分产生愈合膜。