文献类型：期刊文献

英文题名：Multifunctional polyurethane coatings with excellent antifouling and self-healing properties

作者：Wei, Haoran[1];Liu, Henghui[1];Li, Min[1];Fu, Zhinan[1];Liu, Liqun[1];Zhang, Hanjie[1];Fan, Chuanjie[1];Xu, Jun[1];Wang, Jie[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：21

期号：4

起止页码：1333

外文期刊名：JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH

收录：;EI(收录号：20241015695569);WOS:【SCI-EXPANDED(收录号:WOS:001175839900001)】；

基金：We gratefully acknowledge NSFC Grants 51403062 for financial support of this work.

语种：英文

外文关键词：Polydimethylsiloxane; Polyurethane; Smart coating; Disulfide bond

摘要：Polydimethylsiloxane (PDMS) has been widely used to improve the antifouling properties of polyurethane (PU) coatings due to its low surface energy. Herein, a novel type of waterborne polyurethane (WPU) coating with good antifouling and self-healing abilities was synthesized by incorporating PDMS and disulfide bonds. The effects of PDMS and the disulfide content on the thermal, mechanical and surface properties of the coatings were investigated. Benefiting from a rational structural design, the obtained WPU coating manifested superior antifouling properties. In addition, the WPU coating exhibited good healing capabilities owing to the collaboration between dynamic disulfide bonds. Interestingly, the self-healing of an experimental crack occurred at a temperature above 60 degrees C, and the coating recovered its mechanical properties to 95%. This finding has great significance for the design of multifunctional smart coatings for diverse applications.