Corrosion Resistance and Antifouling Bioinspired Coating with Doped Polyaniline and TO@CA Self-Healing Nanocapsules  

作　　者：Hongli Tian Wenbo Du Yuchao Zhan Limei Tian Jie Zhao Jiyu Sun 

机构地区：[1]Key Laboratory of Bionic Engineering(Ministry of Education,China),Jilin University,Changchun,130022,China [2]National Key Laboratory for Remanufacturing,Army Academy of Armored Forces,Beijing,100000,China

出　　处：《Journal of Bionic Engineering》2023年第6期2826-2839,共14页仿生工程学报（英文版）

基　　金：This work was financially supported by the National Defense Science and Technology Key Laboratory Fund Project(61420050403);the Young and Middle-aged Technology Innovation Leading Talents,and the Team Projects of Science and Technology Development Plan of Jilin Province(20230508041RC).

摘　　要：In this study,an integrative bioinspired coating system for antifouling and corrosion resistance was investigated,in which self-healing nanocapsules(tung oil calcium alginate,TO@CA),doped polyaniline and nano-titanium dioxide nanocomposites(SPAn–TiO_(2))and a biostructure metal surface were combined.The antifouling property of the bioinspired coating resulted from the synergistic antifouling effect of nano-TiO_(2)and acid-doped polyaniline in SPAn–TiO_(2).The protonated nitrogen with a positive charge in SPAn–TiO_(2)and the intrinsic bactericidal property of nano-TiO_(2)could damage negatively charged single-celled chlorella,endowing the composite coating with good antifouling performance(less algae attached on the surfaces after a 90-day antifouling test and a conductivity test).The composite bioinspired coating had excellent corrosion resistance,which was due to the good synergistic anticorrosion barrier effect of SPAn–TiO_(2)with TO@CA nanocapsules and the repairing ability of microcracks of TO@CA nanocapsules during the corrosion process.The bioinspired coating with 2 wt%SPAn–TiO_(2)and 2 wt%TO@CA nanocapsules exhibited a better adhesion,corrosion resistance and antifouling performance than the other coatings did.

关 键 词：Corrosion resistance ANTIFOULING SELF-HEALING Multifunctional bioinspired coating Doped polyaniline 

分 类 号：TG174.4[金属学及工艺—金属表面处理]