Self-healing effect of graphene@PANI loaded with benzotriazole for carbon steel

Optimization of intrinsic self-healing silicone coatings by benzotriazole loaded mesoporous silica

“…There are some other researches supported similar results [60][61]. In addition, BTA releasing may also be directly beneficial to improve corrosion resistance of carbon steel upon mechanical scratch in view of its significant corrosion inhibition performance [36], so in future research, we will implement strategies to control the release of BTA and increase the load efficiency of BTA to achieve better self-healing and corrosion protection effect.…”

“…Benzotriazole (BTA) and its derivatives have been unambiguously proven to be efficient for copper corrosion inhibition for the past few decades [31][32][33][34]. Furthermore, it has been shown to provide efficient protection to carbon steel and it is recognized that the dissolved BTA in water can form complex with Fe 2+ that will deposit at a coating defect and block the water diffusion [35][36]. For example, Hao et al used polyaniline decorated graphene as container material to load BTA and prepared a self-healing epoxy coating showing noticeably improved corrosion protection of carbon steel [36].…”

“…Furthermore, it has been shown to provide efficient protection to carbon steel and it is recognized that the dissolved BTA in water can form complex with Fe 2+ that will deposit at a coating defect and block the water diffusion [35][36]. For example, Hao et al used polyaniline decorated graphene as container material to load BTA and prepared a self-healing epoxy coating showing noticeably improved corrosion protection of carbon steel [36]. Except for its enhanced self-healing performance in corrosion protection, it is hard for extrinsic self-healing materials to achieve substantial healing of the material integrity upon damage due to irreversible cross-linking of typically used matrix material.…”

Review of Recent Developments in the Formulation of Graphene-Based Coatings for the Corrosion Protection of Metals and Alloys

“…There have also been a number of publications devoted to the incorporation of PANi and graphene into epoxy coatings [151][152][153][154][155][156] and in all these coatings good corrosion protection has been achieved. In addition, the corrosion inhibitors benzotriazole [157] and tannic acid [158] have been added to PANi/GO epoxy coatings to provide a self-healing effect by releasing the inhibitors when the coating is damaged locally, while zinc-rich PANi/GO epoxy coatings have been formulated and successfully used in corrosion protection [159,160]. Other combinations include PAni/CeO 2 grafted GO nanosheets [31], GO/PANi modified by polydopamine and incorporated within a water-based alkyd varnish [161], while shorter chain aniline trimers [162,163], tetramers [164] and water-soluble carboxylated aniline trimers [165] have been employed rather than PANi to act as an intercalator for graphene aiding its dispersion in the epoxy coating.…”

Corrosion Resistance Evaluation of Self-Healing Epoxy Coating Based on Dual-Component Capsules Containing Resin and Curing Agent

“…Therefore, in the 1980s, self-healing polymers were introduced as an effective solution for healing the microcracks and fracture prevention in order to achieve a better life span and safety of polymeric devices [5][6][7][8][9]. Self-healing materials are classified into two main classes including extrinsic [10][11][12][13][14] and intrinsic [15][16][17] systems based on the healing mechanism. Extrinsic systems based on the healing agent release have shown great efficiency among other methods [18].…”