Synthesis of PDA-BN@f-Al2O3 hybrid for nanocomposite epoxy coating with superior corrosion protective properties

Waterborne polyurethane nanocomposite incorporated with phytic acid intercalated layered double hydroxides: A highly stable aqueous dispersion with desired corrosion protection capability

“…This is due to the chelation ability of PA with metal ions and also the excellent dispersibility of PA‐LDH within the PU matrix, which deeply extends the diffusion pathway of electrolyte through the composite coating to reach the substrate 6,50 . Furthermore, the WPU/PA‐LDH coating has the highest impedance modulus value at low frequencies, illustrating the qualification of this coating to effectively hampering the flow of current between anodic and cathodic areas compared to other samples 51 …”

Recent Advances in Boron Nitride Based Hybrid Polymer Nanocomposites

“…[ 80 ] selected super paramagnetic and flame‐retardant zinc ferrite (ZF) to modify the BNNS via one‐step solvothermal technique and synthesized ZF‐BNNS with increased flame resistant property. In another study, Wan and co‐workers [ 81 ] described the preparation of PDA‐BN@f‐Al 2 O 3 in which γ ‐aminopropyltriethoxysilane (KH550) modified Al 2 O 3 (f‐Al 2 O 3 ) was put on the surface of h‐BN which was covered by PDA. First, PDA‐BN was added into DMF and ultrasonicated for 1 h. After that, they added f‐Al 2 O 3 to the ultrasonicated PDA‐BN and allowed for further 1 h sonication to get uniform suspension.…”

“…Mixing of PDA‐BN@f‐Al 2 O 3 in epoxy improved the corrosion resistance and barrier properties. [ 81 ] Salt spray test and electrochemical measurement showed that corrosion resistance properties of PDA and synergistic effect of fillers helped to enhance the corrosion inhibition performance of epoxy nanocomposite. Recently, Yin and co‐workers [ 115 ] developed a polymer nanocomposite with functionalized BNNS (f‐BNNS) as the nanofiller in PVA matrix using melt modification and liquid exfoliation process and incorporated low amounts of CuNWs into it.…”

“…Compared to pure epoxy, coating inhibition of PDA‐BN@f‐Al 2 O 3 /epoxy improved by three orders of magnitude and is therefore applicable in the fabrication of metal defensive organic coatings. [ 81 ] The protective mechanism of the epoxy hybrid nanocomposite is indeed interesting. Functionalized Al 2 O 3 NPs and PDA acted as spacers between boron nitride sheets, which helped the hybrid to show better stability and dispersion in the epoxy.…”

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

“…Likewise, poly(2-butyl aniline) [266] and polyethylenimine [267] can be employed as an effective dispersing agent for h-BN in epoxy coatings. Several h-BN modified epoxy coatings have been formulated and used to protect corrosion susceptible electrodes and these have been successfully formed using functionalised h-BN [268][269][270], h-BN modified by Fe 3 O 4 nanoparticles [271] and Al 2 O 3 nanoparticles [272], and h-BN with added corrosion inhibitors [273]. Other polymer coatings have also been considered.…”