22. Jan 2021 | Coatings Technologies
“Labyrinthine structure” anticorrosive water-based composite coatings
According to the scientists, the composite coating, developed by introducing graphene oxide modified with [3-(2-aminoethyl) aminopropyl] trimethoxysilane (MGO) into waterborne epoxy, exhibited excellent corrosion resistance and slight harm of solvent-based coating to the environment.
Improved corrosion resistance
The MGO displayed perfect dispersion and corrosion resistance, which reduced the aggregation of graphene oxide (GO) due to the coupling of functional groups. After modification, the lamellar structure of GO remained unchanged, and the interlayer spacing was increased. Crosslinking with resin formed a “labyrinth structure” corrosion path in the coating. Furthermore, the conductivity of GO decreased after the insertion of functional groups. The results demonstrated that the composite with a 0.5 wt.% content of MGO presented remarkably improved corrosion resistance with a protection efficiency of 99.7%.
The study has been published in Progress in Organic Coatings, Volume 150, January 2021.
Thanks to their excellent characteristics, epoxy resins belong to the most established binders within the coatings industry. This new book explains the basic principles of the chemistry of the epoxy group and imparts the use of epoxy and phenoxy resins in industrial coatings, such as anticorrosive coatings, floor coatings, powder coatings and can coatings, with the help of concrete formulations. Essential for any formulator of competitive modern paint systems!
You are currently not logged in
To leave a comment, please log in.
There was an error while sending your comment. Please try again.
Your comment was too long. There are a maximum of 2048 symbols allowed!