二氧化硅/改性高岭土/环氧树脂复合涂层的制备和防腐性能研究

IF 2.7 4区材料科学 Q3 ELECTROCHEMISTRY

Corrosion Reviews Pub Date : 2024-05-10 DOI:10.1515/corrrev-2023-0078

Jiaqi Xie, Jiajiao Wei, Renzhe Jin, Mengyuan He, Peng Zhu, Jianmeng Wu, Zhengyu Wei, Panfei Sun, Dehai Ping, Songjie Li

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引用次数: 0

摘要

采用插层复合法和溶胶-凝胶法对高岭土进行改性并添加二氧化硅，制备了二氧化硅/掺杂高岭土（SiO2@AK）复合材料。将定量的复合材料分散在环氧树脂中，在不锈钢上获得二氧化硅/掺杂高岭土/环氧树脂复合涂层（SiO2@AK/EP）。结果表明，干涂层的厚度约为 110 ± 10 μm，表面平整，无明显结块。随着 SiO2@AK 复合材料的引入，水接触角从 40°增加到 88°，制备的复合涂层的平均表面粗糙度从 10.3 nm 降低到 3.19 nm，腐蚀电流降低了近三个数量级。将涂层在 3.5 wt% 的 NaCl 溶液中浸泡 30 天后，复合涂层的阻抗模量仍保持在 2.511 × 109 Ω cm2 以上，反映出复合材料的引入能有效改善环氧树脂的防腐性能。

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Study on the preparation and anticorrosive performance of silica/modified kaolin/epoxy resin composite coating

A silica/aminated kaolin (SiO2@AK) composite was prepared by modifying kaolin and loading silica, using intercalation complex method and sol–gel method. Quantitative composites were dispersed in epoxy resin to obtain a silica/aminated kaolin/epoxy resin composite coating (SiO2@AK/EP) on stainless steel. The results showed that the thickness of the dry coating was approximately 110 ± 10 μm, and the surface was flat without evident agglomeration. As the SiO2@AK composite was introduced, the water contact angle increased from 40° to 88°, the average surface roughness of the prepared composite coating was reduced from 10.3 nm to 3.19 nm, and the corrosion current decreased by nearly three orders of magnitude. After the coating was soaked in 3.5 wt% NaCl solution for 30 days, the impedance modulus of the composite coating remained above 2.511 × 109 Ω cm2, reflecting that the introduction of the composite could effectively improve the anticorrosion property of the epoxy resin.

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来源期刊

Corrosion Reviews 工程技术-材料科学：膜

CiteScore

5.20

自引率

3.10%

发文量

审稿时长

4.5 months

期刊介绍： Corrosion Reviews is an international bimonthly journal devoted to critical reviews and, to a lesser extent, outstanding original articles that are key to advancing the understanding and application of corrosion science and engineering in the service of society. Papers may be of a theoretical, experimental or practical nature, provided that they make a significant contribution to knowledge in the field.