Epoxy-based smart coating with self-repairing polyurea-formaldehyde microcapsules for anticorrosion protection of aluminum alloy AA2024
Epoxy-based smart coating with self-repairing polyurea-formaldehyde microcapsules for anticorrosion protection of aluminum alloy AA2024
复制标题
用于铝合金AA2024防腐的自修复聚脲甲醛微胶囊环氧智能涂料
DOI：
10.1007/s11998-020-00334-3
复制
发表时间：
2020-03
期刊：
影响因子：
--
通讯作者：
Li Ying
中科院分区：
文献类型：
--
作者：
Njoku Chigoziri N.;Bai Weichen;Arukalam Innocent O.;Yang Lihui;Hou Baorong;Njoku Demian I.;Li Ying
Self-reparable microcapsules which can repair microcracks in the coating matrix and effectively inhibit the corrosion at the substrate/coating interface during service have been evaluated. The main objective was to fabricate an innovative pH-responsive permeability-switching polyurea-formaldehyde(PUF)-based microcapsule laden with 8-hydroxyquinoline (8-HQ) as the core material for the production of smart epoxy coating for the long-term protection of Al alloys. Combined improved barrier, active, and self-repairing properties indicating sort of triple-action corrosion mitigating ability of the modified epoxy-based smart coating was demonstrated by electrochemical impedance spectroscopy and scanning electron microscopy. The results indicate that the self-repairing action occurs via two mechanisms: firstly, by the initiation of chain mobility at the modified coating defects on heat treatment. Secondly, by the crosslinking of the swelled hydrogel present in the PUF shell wall via the various polymer–polymer interactions. The active corrosion protection was due to the (smart) pH response–release ability of the encapsulated inhibitor (8-HQ) with an increase in corrosion degree. Meanwhile, the even dispersal of the fabricated microcapsule with its intrinsic rough surface in the epoxy coating matrix contributed to the improved barrier and adhesive properties.
登录
查看更多内容
用于 AA 2024-T3 活性保护涂层的亚微米介孔二氧化硅容器
影响因子：
8.3
作者：
Shi Hongwei;Wu Liping;Wang Jun;Liu Fuchun;Han En-Hou
通讯作者：
Han En-Hou
镁合金 AZ31 上的铈改性等离子体电解氧化涂层上基于 MgAl 层状双氢氧化物的智能涂层的主动腐蚀保护
影响因子：
8.3
作者：
Zhang Gen;Wu Liang;Tang Aitao;Ma Yanlong;Guangling Song;Zheng Dajiang;Jiang Bin;Atrens Andrej;Fusheng Pan
通讯作者：
Fusheng Pan
DOI：
10.1177/1045389x15600083
发表时间：
2016-07
影响因子：
2.7
作者：
M. Tripathi;R. Dwivedi;Devendra Kumar;P. Roy
通讯作者：
M. Tripathi;R. Dwivedi;Devendra Kumar;P. Roy
影响因子：
8.3
作者：
Yuan, X.;Yue, Z. F.;Feng, T.
通讯作者：
Feng, T.
影响因子：
8.3
作者：
Leal, Debora Abrantes;Riegel-Vidotti, Izabel Cristina;Bruno Marino, Claudia Eliana
通讯作者：
Bruno Marino, Claudia Eliana