Formation of polymer-like anticorrosive films based on organosilanes with benzotriazole, carboxylic and phosphonic acids. Protection of copper and steel against atmospheric corrosion

Adsorption of Organosilanes on the Surface of Aluminium and the Formation of Organosilane Films to Protect It from Corrosion

“…Aluminium foil of the A995 brand with a thickness of 200 microns was used. Before the studies, the samples were washed using ultrasound in an ultrasound sapphire-0.8 TC (“Sapphire”, Moscow, Russia), in a mixture of C 2 H 5 OH:C 7 H 8 = 1:1 for 15 min [ 3 , 8 ].…”

“…In general, materials based on aluminium and its alloys are protected from corrosion during their usage by means of polymer and paint coatings. Such coatings have been well-established as one of the most effective ways to decrease corrosion risk under various conditions [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Often, for the application of coatings, the metal surface is subjected to a preliminary chemical treatment (finishing).…”

“…Organosilanes are artificial compounds that are synthesized from silicon dioxide [ 19 ]. Recently, this class of organosilicon compounds has been used as a metal corrosion inhibitor [ 3 , 7 , 8 , 9 ], including for pretreatment of Al surface from local dissolution [ 15 ]. This is due to its ability to adsorb on metal surfaces with the formation of siloxane structures resulting from polycondensation [ 20 , 21 , 22 ].…”

“…This is due to its ability to adsorb on metal surfaces with the formation of siloxane structures resulting from polycondensation [ 20 , 21 , 22 ]. It has been reported in some papers [ 8 , 23 , 24 , 25 , 26 ] that the presence of organosilanes such as 3—aminopropyltriethoxysilane, 3—glycidoxypropyltrimethoxysilane, ureidopropyltriethoxysilane, vinyltrimethoxysilane on metals promotes resistance to aggressive corrosive environments. However, even with modification of the surface of Al with organosilanes for its protection, research on the adsorption of silanes on aluminium in the presence of corrosive media remains relevant.…”

A Toughening and Anti‐Counterfeiting Benzotriazole‐Based High‐Performance Polymer Film Driven by Appropriate Intermolecular Coordination Force

“…Moreover, its coordination interaction is similar to that of the iron‐catechol system, while the coordination interaction with Cu 2+ is weaker than that of bipyridine/tripyridine ligands (see Supporting Information). [ 17–21 ] In this paper, we expect that the appropriate coordination interaction between BTA and Cu 2+ can be considered as a new dynamic cross‐linking, which can be deconstructed and reconstructed easily by the external forces, thus simultaneously improving the strength and extensibility for novel toughening high performance epoxy resins. To demonstrate the concept, series of Cu 2+ ‐polybenzotriazoles (PEPTDT‐Cu 2+ ) were prepared by a simple copolymerization of 1‐Epoxypropyl benzotriazole (EPT), triethylenetetramine, and bisphenol A diglycidyl ether (DGEBA) in the presence of Cu 2+ ( Figure ).…”