Role of graphene oxide and functionalized graphene oxide in protective hybrid coatings was written by Alrashed, Maher M.;Soucek, Mark D.;Jana, Sadhan C.. And the article was included in Progress in Organic Coatings in 2019.Category: alcohols-buliding-blocks The following contents are mentioned in the article:
This work evaluates the performance of hybrid coatings of polyurethane/polysiloxane filled with graphene oxide as replacement of chromate conversion coatings for protection of 2024-T3 aluminum alloys. The polysiloxanes in the hybrid coating form strong covalent bonds with the metal surfaces and inhibit corrosion, polyurethanes provide mech. and optical properties, and graphene oxide and isocyanate-treated graphene oxide particles reduce oxygen and moisture diffusion through the coatings. The corrosion performance evaluated using electrochem. impedance spectroscopy and filiform corrosion test indicates the following trends. The hybrid coatings filled with isocyanate-treated graphene oxide particles show lower resistance to corrosion compared to hybrid coatings without graphene oxide, although oxygen diffusion and water vapor transmission are reduced by resp. 50% and 10% in the presence of only 0.67 weight% graphene oxide. It is revealed that graphene oxide and isocyanate-treated graphene oxide particles promote polysiloxane condensation on particle surfaces, thereby effectively reducing a part of polysiloxanes that form continuous corrosion-protective layers on the aluminum alloy surface. This study involved multiple reactions and reactants, such as 2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4Category: alcohols-buliding-blocks).
2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Category: alcohols-buliding-blocks
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts