Poly Corrosion-Protections Coatings

J.C. Seegmiller, J.E. Pereira da Silva, D. A. Buttry, S.I. Cordoba de Torresi, and R.M. Torres , Mechanism of action of corrosion protection coating for AA2024-T3 based on poly(aniUne)-poly(methylmethacrylate) blend, J. Electrochem. Soc., 152, B45 B53 (2005). 

Modification by the incorporation of metals or metalloids, styrene, vinyl acetate, poly(styrene-co-maleic anhydride), urethane linkages, and so on result in poly(ester amide) resins with good chemical properties and excellent thermal resistance. Some can also be used as effective antibacterial and biologically safe corrosion protective coating materials. Urethane-modified ethylenediamine tetraacetic add the fatty amide diol of linseed oil-based poly(ester amide) resin exhibits excellent physicomechanical properties, high thermostability up to 200°C and anticorrosive properties. ... 

Gustavsson, J.M., Innis, P.C., He, J Wallace, G.G., andTallman, D.E. (2009) Processable polyaruline-HCSA/poly (vinyl acetate-co-butyl acrylate) corrosion protection coatings for aluminium alloy 2024-T3 a SVET and Raman study. Electrochim. Acta, 54, 1483-1490. 

A brief history of research on conducting polymers, with specific emphasis on results in the area of conducting polymers as corrosion-protective coatings is presented. The synthesis and corrosion inhibiting properties of poly(bis(dialkylamino)phenylene vinylenes at isotonic sea water conditions are presented and discussed. 

Corrosion protecting coatings Poly(styrene sulfonic acid), poly(acrylic acid) [12]... 

Fourier transform infrared reflection-absorption spectroscopy (FT-IFRAS) is applied to the study of corrosion protection of copper by an organic coating. Poly-N-vinyliroidazole (PVI(D) and poly-4(5)-vinylimidazole (PVI(4)) are demonstrated to be effective new polymeric anti-corrosion agents for copper at elevated temperatures. Oxidation of copper is suppressed even at 400° C. PVI(1) and PVI(4) are more effective anti-oxidants than the most commonly used corrosion inhibitors, benzotriazole and undecyllmldazole, at elevated temperatures. These new polymeric agents are water soluble and easy to treat the metal surface. 

R. (2014) Dip coating of poly(e-caprolactone)/hydroxyapatite composite coating on Ti6A14V for enhanced corrosion protection. Surf. Coat. Technol., 245, 102-107. 

The utility of polyaniline in corrosion resistant coatings has been noted [McAndrew et al., 1996]. The addition of polyaniline to acid containing polymers e.g., polyamic acid precursor of poly-imides, styrene-acrylic acid copolymers) allowed for polymeric doping and intermediate corrosion protection of the blends compared to the constituents. Epoxy addition and diisocyante terminated... 

U. Riaz, S. Ahmad, and S. M. Ashraf, Comparison of corrosion protective performance of nanostructured polyaniline and poly(l-naphthylamine)-based alkyd coatings on mild steel. Mater. Corn, 60, 280-286 (2009). 

Lu, WK, Elsenbaumer, RL, Wessling, B. 1995. Corrosion Protection of Mild Steel by Coatings Containing Poly aniline. Synth. Met., 71, 2163. 

PANI/P-PVA (partially phosphorylated poly(vinyl alcohol)) nanoparticles were successfully dispersed in epoxy resin applied to steel [82]. P-PVA is fundamental to obtain a uniform dispersion of PANI nanoparticles, and this fact is responsible for the uniform formation of Fe Oj passive layer at the interface between coating and substrate and therefore for its effectiveness in corrosion protection. PANI was also used in combination with DBSA to be added to epoxy-ester (EPE) system to form a smart anticorrosion coating [73]. DBSA is used as both surfactant and doping agent. By EIS measurements it is deduced that the better anticorrosion performance of PANI (DBSA)/EPE coatings with respect to simple EPE is due to the formation of a second barrier layer by reaction between released DBSA anions and Fe cations at the defective locations of the coating. 

Gopi D, Govindaraju K, KavithaL, Basha KA. Synthesis, characterization and corrosion protection properties of poly(n-vinyl carbazole-co-glycidyl methacrylate) coatings on low nickel stainless steel. Prog. Org. Coat 2011 71(l) ll-8. 

Electrosynthesized composites of poly(l,5-diaminonaphthalene) with polyaniline [146] and with polypyrrole [147] have been described and are reported to offer improved corrosion protection of iron. The corrosion-resistant properties of polyaniline and polypyrrole composite coatings electrochem-ically deposited on low carbon steel [148] were found to be strongly influenced by the applied potential and molar feed ratio of the monomers. 

The use of polymeric blend composites for corrosion protection of AA 2024-T3 has been reported, including composites formed by incorporating water-soluble conducting polymers (either polymethox-yaniline sulfonic acid or poly(4-(3-pyrrole) )butane sulfonate) into various binders (a cross-linked polyvinyl alcohol, a waterborne epoxy, a modified water-dispersible polyester, and a UV-curable urethane acrylate binder) [149]. The preparation of epoxy and polyaniline composite coatings has been described, using either nanodispersed EB particles [91] or EB that was first dissolved in selected amine hardeners before adding the epoxy resin [98]. Even with very low EB loadings, these workers reported enhanced corrosion protection for steel. 

Patil, S., S.R. Sainkar, and P.P. Patil. 2004. Poly(o-anisidine) coatings on copper Synthesis, characterization, and evaluation of corrosion protection performance. Appl Surf Sci 225 (1-4) 204. 

David et al have tested these new diblock copolymers as additives for adhesion/anticorrosive properties of metals. In order to protect against corrosion, a coating system was prepared consisting of a blend of poly(VDF) (inhibiting water penetration) with poly(MMA)-Z)-poly(monophosphonic acrylate) diblock copolymer with 10 wt% [compared to poly(VDF)]. This diblock copolymer was obtained by atom transfer radical polymerization using post-functionalization and hydrolysis to introduce the phosphonic acid function onto the polymeric backbone. The anticorrosive properties of virgin poly(VDF) were also determined without any additive to be compared... 

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