Self-lubricating and intelligent temperature-regulating waterborne self-stratifying coating

被引：0

作者：

Zhu, Jianing ^{[1
,2
]}

Yang, Haoru ^{[2
]}

Long, Yingchun ^{[2
]}

Liu, Tianlin ^{[2
]}

Liu, Haipeng ^{[2
]}

Xuan, Yang ^{[3
]}

Li, Daqi ^{[3
]}

Deng, Shijie ^{[3
]}

Li, Xiaofeng ^{[4
]}

Min, Peng ^{[4
]}

Zhu, Tang ^{[5
]}

Yu, Zhi ^{[1
]}

Wang, Na ^{[1
]}

Liang, Fuxin ^{[2
]}

机构：

[1] Shenyang Univ Chem Technol, Coll Mat Sci & Engn, Shenyang 110142, Peoples R China

[2] Tsinghua Univ, Inst Polymer Sci & Engn, Dept Chem Engn, Beijing 100084, Peoples R China

[3] Sinopec Res Inst Petr Engn, Beijing 102206, Peoples R China

[4] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[5] Shenzhen Univ, Inst Low dimens Mat Genome Initiat, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2025年 / 205卷

基金：

中国国家自然科学基金;

关键词：

Waterborne self-stratifying coating; Self-lubrication; Self-healing; Intelligent temperature-regulation; Phase change microcapsules; Janus nanosheet; PAINT FILMS;

D O I：

10.1016/j.porgcoat.2025.109322

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Phase change material paraffin was encapsulated with various Janus shell to synthesize phase change micro-capsule (PCM), which was added into waterborne coating to achieve self-stratifying coating. Leveraging the excellent water dispersibility of PCM and its density difference with aqueous epoxy resin, PCM composition spontaneously stratify to the surface and upper part of coating during its formation process. It was investigated the synergistic effect of Janus shell and encapsulated paraffin endows the coating with excellent lubrication performance, with a friction coefficient of less than 0.04. In addition, the self-stratifying coating with a layered structure combined the hydrophobicity of the paraffin in PCM with the adhesion of the epoxy resin. After the PCM was damaged, the paraffin and Janus sheets can cover and heal the damage, resulting in excellent corrosion resistance. Based on the phase change thermal storage property of PCM, the as-formed coatings can cause a temperature difference of more than 10 degrees C, which has application potential in the field of intelligent temperature regulation.

引用

页数：9

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