Four kinds of alcohol amines were tested to improve the anticorrosion performance of the phosphoric and tannic acid (PTA)-based rust converter. The alcohol amine modified PTA rust converters with the optimum mechanical and functional performances were used to prepare the homogeneous single-component waterborne rust conversion-based paint. The mechanical properties and the long-term corrosion resistance of the synthesized rust converter-based paint were investigated. The results show that alcohol amine modified PTA rust converter can convert the rust layer into a thick passivation film with iron tannate and iron phosphate as the main components, significantly improving the corrosion resistance of the carbon steel. The alcohol amine D modified PTA rust converter (RC-D) showed the best anticorrosion and rust conversion performances. The waterborne rust conversion-based paint can convert the rust layer of steel into a blue-black and relatively flat passivation film layer. The waterborne polymer-based paint containing 10 wt.% RC-D significantly improves the long-term corrosion resistance of the rusty steel and the mechanical property of paint.

中文翻译：

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醇胺改性磷单宁酸基防锈剂及其碳钢水性聚合物涂料的防腐性能

测试了四种醇胺以提高磷酸单宁酸（PTA）基防锈剂的防腐性能。采用具有最佳力学和功能性能的醇胺改性PTA防锈剂制备均质单组分水性防锈剂。研究了合成的防锈剂基涂料的力学性能和长期耐腐蚀性能。结果表明，醇胺改性PTA防锈剂可以将锈层转化为一层以鞣酸铁和磷酸铁为主要成分的厚钝化膜，显着提高了碳钢的耐腐蚀性能。醇胺D改性PTA防锈剂（RC-D）表现出最好的防腐和防锈性能。水性锈转化型涂料可将钢铁的锈层转化为蓝黑色且较平整的钝化膜层。含有10 wt.% RC-D的水性聚合物基涂料显着提高了锈钢的长期耐腐蚀性能和涂料的力学性能。