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第55卷第5期 涂料工业 Vol. 55 No.5
2025 年5月 刘 等: 状纳米 Co O 对醇酸清漆防腐性能的影响 May 2025
PAINT & COATINGS INDUSTRY
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o 对醇酸 防腐性能的影响
刘璐 ,石展 ,余会成 ,刘 ,黄增尉,王顺龙
*
(广西 大学化学化工学院,广西 化学与工程重点实验室,南 530006)
摘 要: 的 为了提高醇酸清漆的防腐性,制备了一种 状纳米 Co O 缓蚀剂。 方法 采用扫描电子显
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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 状纳米 Co O 进行表征。采用
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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 状纳米 Co O 的醇酸涂层的性能。 结果
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纯醇酸涂层腐蚀电流密度为 42. 24 μA/cm ,清漆中 状纳米 Co O 的质量分数为 0. 12%~0. 25%时,腐蚀电流
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密度为1. 02~1. 56 μA/cm ,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,
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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 状纳米 Co O 能显著改善醇酸清
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漆的防腐性能。
关键词:清漆;醇酸树脂; 状纳米 Co O ;涂层;腐蚀
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中图分类号:TQ635.2 文献标志码:A 文章编号:0253-4312(2025)05-0016-05
doi:10. 12020/j. issn. 0253-4312. 2024-391
Influence of Cotton-like Nano Co O on Corrosion Resistance of
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Alkyd Varnish
LIU Luying,SHI Zhanwang,YU Huicheng,LIU Suni,HUANG Zengwei,WANG Shunlong
(Guangxi Key Laboratory of Chemistry and Engineering of Forest Products,School of Chemistry and Chemical Engineering,
Guangxi University for Nationalities,Nanning 530006,China)
Abstract: Objective In order to improve the anticorrosive property of alkyd varnish,a cotton-
like nano Co O corrosion inhibitor was prepared. Methods The cotton-like nano-Co O was
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characterized by scanning electron microscopy(SEM),X-ray powder diffractometer(XRD) and
r
infrared spectrometer(FT-IR),espectively. The performance of the alkyd coating with the addition of
cotton-like nano-Co O was tested by polarization curve,electrochemical impedance spectroscopy,salt
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water immersion corrosion test and water absorption rate test. Results The corrosion current density of
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pure alkyd coating was 42. 24 μA/cm ,and the corrosion current density was 1. 02-1. 56 μA/cm when
the mass fraction of cotton-like nano-Co O in the varnish was 0. 12%-0. 25%;the composite coating
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was only slightly corroded,while the pure alkyd coating was very seriously corroded after 20 d salt water
immersion corrosion test;he water absorption rate of the composite coating was reduced to about 4%,
t
while the absorption rate of the pure alkyd coating was more than 12%. Conclusion The cotton-like
Co O nanomaterial could significantly improve the anticorrosion performance of alkyd varnish.
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v
Key words:arnish;lkyd resin;otton-like nano Co O ;coating;corrosion
a
c
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[基金项目] 广西自然科学基金项目(2018GXNSFAA294086);广西民 大学自治区级大学生创新创业训练计划项目
(S202410608351)
*通信作者:余会成(1968—),男,博士,副教授,主要从事高分子防腐涂层研究; :doyhc@126.com。
本文规范引用格式:
刘璐 ,石展 ,余会成,等. 状纳米Co O 对醇酸清漆防腐性能的影响[J]. 涂料工业,2025,55(5):16-20.
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LIU L Y,SHI Z W,YU H C,et al. Influence of cotton-like nano Co O on corrosion resistance of alkyd varnish[J]. Paint & Coatings Industry,2025,
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55(5):16-20.
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