Mechanical Strong,Highly Adhesive,Recyclable and Transparent Supramolecular Silicone Coatings with Easy Water/Oil Sliding  

作　　者：Yu-Cai Lin Feng Chen Shou-Bin Yang Shu-Yue Gong Yu-Xiang Luo Fang-Fang Wei Fu-Chuan Ding Wei-Bin Bai Rong-Kun Jian 

机构地区：[1]Fujian Key Laboratory of Polymer Materials,Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering,College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China

出　　处：《Chinese Journal of Polymer Science》2023年第11期1796-1804,I0010,共10页高分子科学（英文版）

基　　金：the National Natural Science Foundation of China(Nos.22005053 and 21978050);the Fujian Provincial Department of Science and Technology(No.2021J05032);Department of Education(Fujian province)(No.JAT190076)。

摘　　要：Traditional silicone materials have poor mechanical properties,poor interfacial adhesion and lack the ability to be reprocessed or recycled.Herein,we developed a novel strategy of incorporating dynamic noncovalent bonds(2-amino-4-hydroxy-6-methylpyrimidine(UPy))into side chain of silicone backbones to construct supramolecular silicone poly(urea-urethane)(SSPu)coatings with excellent mechanical performance,strong interfacial adhesion and multiple time recycling capability.Impressively,the prepared SSPu is endowed with simultaneously enhanced stiffness(272.0±23.2 MPa)and toughness(8.0±2.0 MJ·m^(-3)).Besides,SSPu shows strong interfacial adhesion(up to 9.0±1.3 MPa)to diverse substrate(stainless steel,aluminum,copper,epoxy and glass)with long term stability.Moreover,SSPu exhibits excellent multirecyclability and reusability without significantly decrease of its performance.In addition to the abovementioned features,the enrichment of siloxane backbones in the surface layer endows SSPu with robust repellency to water/oil.Our strategy provides a powerful route to fabricate a new multifunctional silicone elastomer.It is highly anticipated that our strategy can effectively extend the service life of silicone coating which can be applied in a wide variety of areas including self-cleaning,antifouling.

关 键 词：Silicong coating SUPRAMOLECULAR Adhesion RECYCLABLE 

分 类 号：TQ630.1[化学工程—精细化工]