title: Self-healing coatings based on halloysite clay polymer composites for protection of copper alloys.
abstract: Halloysite clay nanotubes loaded with corrosion inhibitors benzotriazole (BTA), 2-mercaptobenzimidazole (MBI), and 2-mercaptobenzothiazole (MBT) were used as additives in self-healing composite paint coating of copper. These inhibitors form protective films on the metal surface and mitigate corrosion. Mechanisms involved in the film formation have been studied with optical and electron microscopy, UV-vis spectrometry, and adhesivity tests. Efficiency of the halloysite lumen loading ascended in the order of BTA < MBT < MBI; consequently, MBI and MBT halloysite formulations have shown the best protection. Inhibitors were kept in the tubes buried in polymeric paint layer for a long time and release was enhanced in the coating defects exposed to humid media with 20-50 h, sufficient for formation of protective layer. Anticorrosive performance of the halloysite-based composite acrylic and polyurethane coatings have been demonstrated for 110-copper alloy strips exposed to 0.5 M aqueous NaCl for 6 months.
authors: Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana 71270, United States. eabdullayev@appliedminerals.com
authors: Elshad
authors: E
authors: Abdullayev
authors: Vagif
authors: V
authors: Abbasov
authors: Asel
authors: A
authors: Tursunbayeva
authors: Vasiliy
authors: V
authors: Portnov
authors: Hikmat
authors: H
authors: Ibrahimov
authors: Gulbaniz
authors: G
authors: Mukhtarova
authors: Yuri
authors: Y
authors: Lvov