Anticorrosion Property of Alcohol Amine Modified Phosphoric and Tannic Acid Based Rust Converter and Its Waterborne Polymer-Based Paint for Carbon Steel

Yangliu Chen, Li Shiyu, Liu Zhiyong, Zixiao Wang
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引用次数: 1

Abstract

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.
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醇胺改性磷酸单宁基转炉及其碳钢水性聚合物基涂料的防腐性能
为提高磷酸单宁酸(PTA)基防锈转炉的防腐性能,对4种醇胺进行了试验。采用具有最佳力学性能和功能性能的醇胺改性PTA防锈转化剂制备了均匀的单组分水性防锈转化漆。研究了合成的转锈涂料的力学性能和长期耐蚀性。结果表明,醇胺改性PTA防锈转炉可使锈层形成以单宁酸铁和磷酸铁为主要成分的厚钝化膜,显著提高了碳钢的耐蚀性。醇胺D改性PTA防锈转化器(RC-D)的防腐和防锈转化性能最好。水性防锈转化漆可以将钢的锈层转化为蓝黑色的、相对平坦的钝化膜层。含有10 wt.% RC-D的水性聚合物基涂料能显著提高生锈钢的长期耐蚀性和涂料的力学性能。
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