Highly effective anti-corrosion composite coatings enhanced by non-covalent functionalized boron nitride nanosheets via a facile latex approach

Wang, Shufen; Zhang, Quangang; Tang, Jiapeng; Xu, Yangshuhan; Li, Minghua; Feng, Lipin; Xie, Jinsong; Wei, Chaoliang; Ding, Yunsheng

doi:10.1016/j.coco.2022.101153

Cited by 7 publications

(4 citation statements)

References 31 publications

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“…Remarkably, even after 30 days of storage, the dispersion of PEI-BNNSs exhibited excellent stability, with virtually no observed precipitation at the bottom (Figure e). The highest Zeta potential of PEI-BNNSs dispersion was 37.57 mV (Figure f), indicating that PEI-BNNSs aqueous dispersion bespoke ascendant disperse stability . This can be ascribed to PEI molecules, which are anchored to BNNSs’ surface and effectively reduce their aggregation.…”

Section: Resultsmentioning

confidence: 92%

“…The substrate materials were Q235 carbon steel. The treatment and cleaning method of the working electrode before use is as described in the previous work …”

Section: Methodsmentioning

confidence: 99%

“…The highest Zeta potential of PEI-BNNSs dispersion was 37.57 mV (Figure 3f), indicating that PEI-BNNSs aqueous dispersion bespoke ascendant disperse stability. 27 This can be ascribed to PEI molecules, which are anchored to BNNSs' surface and effectively reduce their aggregation.…”

Section: Stability Of Pei-bnnss Aqueous Dispersionmentioning

confidence: 99%

“…The treatment and cleaning method of the working electrode before use is as described in the previous work. 27 Preparation of PEI-BNNSs Dispersion. A typical process to produce PEI-BNNSs dispersion was as follows: (1) h-BN (3 g) and aqueous PEI (57 g) of different mass fractions (2 wt %, 10 wt %) were mixed.…”

Section: ■ Introductionmentioning

confidence: 99%

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Mechanism Insights in Anticorrosion Performance of Waterborne Epoxy Coatings Reinforced by PEI-Functionalized Boron Nitride Nanosheets

Wang,

Tang,

Xiang

et al. 2024

Langmuir

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Functionalized hexagonal boron nitride nanosheets (BNNSs) have arisen as compelling anticorrosive additives, yet the precise mechanism of their corrosion resistance enhancement in coatings remains unclear. Here, polyethylenimine functionalized BNNSs (PEI-BNNSs) with approximately 6–11 layers were prepared through a “one-step” method. Then, the PEI-BNNSs/Waterborne epoxy (WEP) composite coatings were incorporated via the waterborne latex blending method for the anticorrosion of the Q235 substrate. The impedance modulus (|Z|f = 0.01 Hz) of 0.5 wt % PEI-BNNSs/WEP composite coating soaked in 3.5 wt % NaCl solution for 35 days increased by 4 orders of magnitude compared to pure WEP coating, exhibiting exceptional long-term resistance against corrosion. The positron annihilation lifetime spectroscopy and corrosion product analysis demonstrated that the reinforced anticorrosion capabilities are not solely ascribed to the “tortuous path effect” arising from BNNSs impermeability. These mechanisms also encompass the reduction in free volume fraction and radius of the free volume cavities within the composite coating brought about by the PEI molecules. Additionally, the increase in coating adhesion, promoted by PEI, plays an important role in augmenting the barrier properties against corrosive agents. This study provided a full comprehension of the role played by functionalized BNNSs in fortifying the anticorrosion attributes of WEP coatings.

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Section: Resultsmentioning

confidence: 92%

“…The substrate materials were Q235 carbon steel. The treatment and cleaning method of the working electrode before use is as described in the previous work …”

Section: Methodsmentioning

confidence: 99%

Section: Stability Of Pei-bnnss Aqueous Dispersionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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