甘油微胶囊搭载硅烷环氧共混涂层的耐蚀性研究

doi:10.11896/cldb.22080166

材料导报

2024, Vol. 38

Issue (7): 22080166-6 https://doi.org/10.11896/cldb.22080166

高分子与聚合物基复合材料

甘油微胶囊搭载硅烷环氧共混涂层的耐蚀性研究

赵清平, 亢淑梅^*, 邹方正, 朱忠博, 李鹏宇

辽宁科技大学材料与冶金学院,沈阳 114051

Corrosion Resistance of Glycerol Microcapsules Coated with Silane Epoxy Blend Coating

ZHAO Qingping, KANG Shumei^*, ZOU Fangzheng, ZHU Zhongbo, LI Pengyu

School of Materials and Metallurgy, University of Science and Technology Liaoning, Shenyang 114051, China

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摘要为了提高金属基体的耐蚀性,采用溶剂蒸发法制备了水包油乳液体系的聚砜包覆甘油的微胶囊,并在基体表面制备了含有微胶囊的硅烷环氧共混涂层。通过扫描电镜、红外、热重、电化学分析对微胶囊和含有微胶囊的环氧硅烷共混涂层的形貌结构、热稳定性、耐蚀性等进行研究。结果表明:以聚砜为壁材包裹的微胶囊的平均粒径为150 μm,且聚砜对甘油的包封效率为12%,胶囊的热分解温度为320 ℃。在3.5%(质量分数,下同) NaCl 溶液浸泡下,当硅烷的添加量为3%时,硅烷的水解缩合弥补了环氧涂层的缺陷,使硅烷环氧共混涂层的阻抗模值提高到8×10⁶ Ω·cm^-2;此外,添加微胶囊的硅烷环氧涂层由于微胶囊中缓释剂的释放吸附在金属基体表面,延缓了金属腐蚀的速度,阻抗模值提高到2×10⁷ Ω·cm^-2,耐蚀性增强。

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关键词: 甘油聚砜微胶囊自修复涂层耐蚀性

Abstract: In order to improve the corrosion resistance of matrix, polysulfone coated glycerol microcapsules in oil in water lotion system were prepared through solvent evaporation, and silane epoxy blend coating containing microcapsules were prepared on the surface. The morphology, thermal stability and corrosion resistance of the microcapsules and epoxy silane blend coating containing microcapsules were studied through SEM, IR, TG and electrochemical analysis. The results showed that the microcapsules with glycerol as core material and polysulfone as wall material had an average particle size of 150 μm. The encapsulation efficiency was 12% and the thermal decomposition temperature was 320 ℃. When the addition of silane was 3% in 3.5wt% NaCl solution, the defect of epoxy coating was compensated by hydrolysis condensation of silane, and the impedance modulus of silane epoxy blend coating increased to 8×10⁶ Ω·cm^-2. In addition, the silane epoxy coating with microcapsules was adsorbed on the surface of the metal matrix due to the release of the slow-release agent in the microcapsules, which delayed the corrosion of the metal and increased the impedance modulus to 2×10⁷ Ω· cm^-2, and the corrosion resistance was enhanced.

Key words: glycerol polysulfone microcapsule self-healing coating corrosion resistance

出版日期: 2024-04-10 发布日期: 2024-04-11

ZTFLH:

TG174

基金资助: 国家自然科学基金(52074149);国家自然科学基金联合项目(U1860112);辽宁省自然科学基金(2022-MS-355)

通讯作者: 亢淑梅,辽宁科技大学材料与冶金学院副教授、硕士研究生导师。2002年西安建筑科技大学冶金工程学院化学工程与工艺专业本科毕业,2005年西安建筑科技大学冶金物理化学专业硕士毕业,2012年辽宁科技大学冶金工程专业博士毕业。目前主要从事金属及金属基复合材料腐蚀与防护、废旧电池回收的研究工作。发表论文20余篇,参与国家自然基金项目1项。kangshumei_911@163.com

作者简介: 赵清平,2020年6月于辽宁科技大学获得理学学士学位。现为辽宁科技大学材料与冶金学院硕士研究生,在亢淑梅教授的指导下进行研究。目前主要研究领域为材料腐蚀与防护。

引用本文:

赵清平, 亢淑梅, 邹方正, 朱忠博, 李鹏宇. 甘油微胶囊搭载硅烷环氧共混涂层的耐蚀性研究[J]. 材料导报, 2024, 38(7): 22080166-6.
ZHAO Qingping, KANG Shumei, ZOU Fangzheng, ZHU Zhongbo, LI Pengyu. Corrosion Resistance of Glycerol Microcapsules Coated with Silane Epoxy Blend Coating. Materials Reports, 2024, 38(7): 22080166-6.

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https://www.mater-rep.com/CN/10.11896/cldb.22080166 或 https://www.mater-rep.com/CN/Y2024/V38/I7/22080166

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