棉花状纳米Co3O4对醇酸清漆防腐性能的影响

刘璐滢; 石展望; 余会成; 等

doi:10.12020/j.issn.0253-4312.2024-391

涂料工业 >

2025 , Vol. 55 >Issue 5: 16 - 20

DOI: https://doi.org/10.12020/j.issn.0253-4312.2024-391

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棉花状纳米Co₃O₄对醇酸清漆防腐性能的影响

刘璐滢 ,
石展望 ,
余会成 ,
等

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广西民族大学化学化工学院，广西林产化学与工程重点实验室，南宁530006

余会成（ 1968—），男，博士，副教授，主要从事高分子防腐涂层研究；邮箱： doyhc@126.com。

网络出版日期: 2025-03-17

基金资助

广西自然科学基金项目（ 2018GXNSFAA294086）；广西民族大学自治区级大学生创新创业训练计划项目（S202410608351）

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Influence of Cotton-like Nano Co₃O₄ on Corrosion Resistance of Alkyd Varnish

LIU L Y ,
SHI Z W ,
YU H C ,
et al

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Guangxi Key Laboratory of Chemistry and Engineering of Forest Products，School of Chemistry and Chemical Engineering，Guangxi University for Nationalities，Nanning 530006，China

Online published: 2025-03-17

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摘要

【目的】为了提高醇酸清漆的防腐性，制备了一种棉花状纳米 Co₃O₄缓蚀剂。【方法】采用扫描电子显微镜（ SEM）、 X射线粉末衍射仪（ XRD）及傅立叶变换红外光谱仪（ FT-IR）对棉花状纳米 Co₃O₄进行表征。采用极化曲线、交流阻抗、盐水浸泡腐蚀试验及吸水率试验研究了添加棉花状纳米 Co₃O₄的醇酸涂层的性能。【结果】纯醇酸涂层腐蚀电流密度为 42. 24 μA/cm²，清漆中棉花状纳米 Co₃O₄的质量分数为 0. 12%~0. 25%时，腐蚀电流密度为 1. 02~1. 56 μA/cm²经过 20 d盐水浸泡腐蚀试验，复合涂层只是轻微腐蚀，而纯醇酸涂层腐蚀非常严重，复合涂层吸水率降低到 4%左，右，而纯醇酸涂层吸水率超过 12%。【结论】棉花状纳米 Co₃O₄能显著改善醇酸清漆的防腐性能。

关键词： 清漆; 醇酸树脂; 棉花状纳米 Co₃O₄; 涂层; 腐蚀

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刘璐滢 , 石展望 , 余会成 , 等 . 棉花状纳米Co₃O₄对醇酸清漆防腐性能的影响[J]. 涂料工业, 2025 , 55(5) : 16 -20 . DOI: 10.12020/j.issn.0253-4312.2024-391

Abstract

［Objective］In order to improve the anticorrosive property of alkyd varnish，a cotton-like nano Co₃O₄ corrosion inhibitor was prepared.［Methods］The cotton-like nano- Co₃O₄ was characterized by scanning electron microscopy（SEM）， X-ray powder diffractometer（XRD） and infrared spectrometer（FT-IR），respectively. The performance of the alkyd coating with the addition of cotton-like nano-Co3O4 was tested by polarization curve，electrochemical impedance spectroscopy，salt water immersion corrosion test and water absorption rate test.［Results］The corrosion current density of pure alkyd coating was 42. 24 μA/cm²，and the corrosion current density was 1. 02-1. 56 μA/cm² when the mass fraction of cotton-like nano- Co₃O₄ in the varnish was 0. 12%-0. 25%；the composite coating was only slightly corroded，while the pure alkyd coating was very seriously corroded after 20 d salt water immersion corrosion test；the water absorption rate of the composite coating was reduced to about 4%， while the absorption rate of the pure alkyd coating was more than 12%.［Conclusion］The cotton-like Co₃O₄ nanomaterial could significantly improve the anticorrosion performance of alkyd varnish.

Key words： varnish; alkyd resin; cotton-like nano Co₃O₄; coating; corrosion

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