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A new pigment for smart anticorrosive coatings

机译：用于智能防腐涂料的新型颜料

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The purpose of this paper was to evaluate the performance of a modified zeolite as an anticorrosive pigment for paints. A procedure to prepare the pigment was outlined and its anticorrosive properties assessed following the electrochemical behavior of a steel electrode in pigment suspension. In a second stage, alkyd paints were formulated employing different anticorrosive pigments: (1) 30% by volume (v/v) of the modified zeolitic rock, (2) 10% (v/v) of zinc phosphate, and (3) a mixture of 10% (v/v) zinc phosphate plus 20% (v/v) of the modified zeolitic rock. In every case, percentages were referred to the total pigment content. Titanium dioxide, zinc oxide, and barium sulfate were incorporated to complete the pigment formula. The pigment volume concentration/ critical pigment volume concentration (PVC/CPVC) ratio was 0.8. The performance of the resulting anticorrosive paints was assessed by accelerated (salt spray and humidity chambers) tests and electrochemical (corrosion potential, ionic resistance, and polarization resistance) essays. It was demonstrated that the modified zeolite is effective in protecting steel from corrosion when it is used in combination with zinc phosphate. There exists a synergism between the modified zeolite and zinc phosphate that allows the zinc phosphate content in anticorrosive paints to be reduced.
机译：本文的目的是评估改性沸石作为油漆的防腐颜料的性能。概述了制备颜料的程序，并根据颜料悬浮液中钢电极的电化学行为评估了其防腐性能。在第二阶段中，使用不同的防腐颜料配制醇酸涂料：（1）30％（v / v）的改性沸石岩；（2）10％（v / v）的磷酸锌；以及（3） 10％（v / v）磷酸锌与20％（v / v）改性沸石岩石的混合物。在每种情况下，百分数均指总颜料含量。加入二氧化钛，氧化锌和硫酸钡以完成颜料配方。颜料体积浓度/临界颜料体积浓度（PVC / CPVC）之比为0.8。通过加速（盐雾室和湿气室）测试和电化学（腐蚀电势，离子电阻和极化电阻）文章评估了所得防腐涂料的性能。已经证明，当与磷酸锌组合使用时，改性沸石可有效地保护钢免受腐蚀。改性沸石与磷酸锌之间存在协同作用，从而可以降低防腐涂料中的磷酸锌含量。

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