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Mass preparation and anticorrosion mechanism of highly triple-effective corrosion inhibition performance for co-modified zinc phosphate-based pigments
Dyes and Pigments ( IF 4.5 ) Pub Date : 2018-10-03 , DOI: 10.1016/j.dyepig.2018.10.001
Ya-Nan Xue , Xi-Zi Xue , Min Miao , Jin-Ku Liu

The benzotriazole and GO co-modified zinc phosphate (ZP/BTA/GO) pigments with chemically oriented laminated structure are synthesized massively by in situ self-heating method for the first time. The heat released from the formation of ZP increases the solubility of BTA achieving the self-sufficiency of system energy in one step. After modification by BTA, the anticorrosive blind region of ZP pigments in the initial corrosion stage is repaired. With the co-modification by BTA and GO, the strong interaction among ZP, BTA and GO makes the compact laminated structure of ZP/BTA/GO pigments more stable, exerting bidirectional shielding effect on the penetration of corrosive medium. Meanwhile, the electrochemical impedance spectroscopy (EIS) and polarization curve tests reveal that the anticorrosion performance of ZP/BTA/GO pigments is increased by 366.1% compared to ZP pigments. The remarkable improvement of corrosion inhibition is attributed to the synergistic complementary anticorrosion mechanism containing the extension of electrons transport path, the deviation of electrons transfer and the formation of diversified passive films. The formation of zinc phosphate-based laminated pigments with full-covered anticorrosion time and excellent corrosion inhibition performance promotes the industrial production and development of anticorrosion materials.



中文翻译:

共改性磷酸锌基颜料的高三倍有效缓蚀性能的批量制备和防腐蚀机理

首次通过原位自热方法大规模合成了具有化学取向叠层结构的苯并三唑和GO共改性的磷酸锌(ZP / BTA / GO)颜料。ZP形成过程中释放出的热量增加了BTA的溶解度,从而一步实现了系统能量的自给自足。经BTA改性后,可修复ZP颜料在初始腐蚀阶段的防腐蚀盲区。通过BTA和GO的共改性,ZP,BTA和GO之间的强相互作用使ZP / BTA / GO颜料的致密层压结构更加稳定,对腐蚀性介质的渗透具有双向屏蔽作用。同时,电化学阻抗谱(EIS)和极化曲线测试表明ZP / BTA / GO颜料的防腐性能提高了366。与ZP颜料相比为1%。腐蚀抑制作用的显着改善归因于协同互补的防腐蚀机理,该机理包括电子传输路径的扩展,电子传输的偏离以及多样化钝化膜的形成。具有充分的防腐时间和优异的缓蚀性能的磷酸锌基层压颜料的形成促进了防腐材料的工业生产和发展。

更新日期:2018-10-03
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