Enhanced effect of phenyl silane-modified hexagonal boron nitride nanosheets on the corrosion protection behavior of poly(arylene ether nitrile) coating

Developing alternative protective coating with long serve life under complicated aggressive condition possesses desperate need in corrosion protection filed. Herein, a high performance functional polymer called poly(arylene ether nitrile) (PEN) was employed as a novel organic corrosion protection coating for preservation of P110 steel in this work. The phenyl silane functionalized hexagonal boron nitride (h-BN-MPDTS) synthesized via silylation reaction was introduced into PEN, forming a more efficient protection coating system with superior corrosion resistance. The obtained EIS experimental consequences confirmed that impedance of h-BN-MPDTS PEN coating (1.036 x 108 omega cm2) was promoted by two orders of magnitude when compared to the neat coating (2.226 x 106 omega cm2) with one time constant remained throughout the immersion process of 80 days. Meantime, less rust was seen from the artificial scratches of h-BN-MPDTS sample during the salt spray experiment, further demonstrating better corrosion resistance of h-BN-MPDTS

Automated summary

In this study, a high-performance functional polymer called poly(arylene ether nitrile) (PEN) was used as a novel organic corrosion protection coating for P110 steel. The introduction of phenyl silane functionalized hexagonal boron nitride (h-BN-MPDTS) into PEN improved the corrosion resistance of the coating. The impedance of the h-BN-MPDTS PEN coating increased by two orders of magnitude compared to the neat coating, and remained stable throughout the 80-day immersion process. Additionally, fewer signs of rust were observed on the h-BN-MPDTS sample during the salt spray experiment, demonstrating its superior corrosion resistance.