文献类型：期刊文献

英文题名：Harnessing corrosion, wear, and UV aging resistances of epoxy coatings via the degree of branching for amino polysiloxanes

作者：Qin, Liangrong[1];Dong, Qiang[1];Wang, Caiyun[1];Shi, Pengfei[1];Qian, Jianhua[2];Liu, Zuozhen[2];Huang, Farong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Minist Educ, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sino Polymer Co Ltd, Shanghai 200241, Peoples R China

年份：2026

卷号：542

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20262320839941);WOS:【SCI-EXPANDED(收录号:WOS:001791492500001)】；

基金：The authors gratefully acknowledge the financial supports provided Qin by the Shanghai Special Funds for Collaborative Innovation (No. HCXBCY-2024-017), and the Fundamental Research Funds for the Central Universities (No. JKD01261701).

语种：英文

外文关键词：Amino polysiloxane; Degree of branching; Epoxy coating; Wear resistance; Corrosion resistance; UV aging resistance

摘要：A series of amino polysiloxanes with different degrees of branching were designed and synthesized by the hydrolytic condensation reactions among siloxane monomers in order to investigate the relationship between molecular structures and properties of epoxy coatings made from an epoxy resin and the polysiloxanes. The results show that the epoxy coatings exhibit good mechanical properties (especially wear resistance), excellent corrosion resistance, outstanding UV aging resistance, and thermal properties. Furthermore, the wear and corrosion resistances, UV aging resistance, thermal properties of the epoxy coatings increase although the toughness of the coatings slightly reduces with the degree of branching of the amino polysiloxanes increasing. Particularly, the epoxy coating with about 70% degree of branching (DGEHBA-BAPS-70-C) displays superior comprehensive properties with the abrasion value 14 mg after 1000 friction cycles, the impedance modulus | Z|f=0.01Hz 7.08 & times;108 Omega & sdot;cm2 after 21 days of immersion, and Td5 311 degrees C. The UV aging test demonstrates that the hardness and adhesion strength of the epoxy coatings remain basically unchanged after the artificial accelerated weathering aging tests for 500 h. This study would provide an optimized strategy for the molecular design of high-performance epoxy coatings, and be expected to be used in the development of coatings with wear, corrosion, and UV aging resistances.