Chitosan functionalized hexagonal boron nitride nanomaterial to enhance the anticorrosive performance of epoxy resin

A simple method was used to load the gamma-Aminopropyl triethoxysilane (KH550) modified chitosan (CS) on the surface of hexagonal boron nitride(HBN) modified with polydopamine (PDA). The prepared material (HP-CS) was added into epoxy resin to fabricate high-efficiency anti-corrosion coating. Various characterization methods were used to study the dispersion and interfacial interaction of HP-CS in epoxy resin. In addition, electrochemical impedance spectroscopy (EIS) test results demonstrated that HP-CS/EP coating had good corrosion resistance, and the impedance modulus reached 8.83 x 10(9 )omega cm(2). Furthermore, the impedance modulus of HP-CS/EP coating was about 2 orders of magnitude higher than the pure EP coating after 30 days of immersion.

Automated summary

In this study, a simple method was used to load KH550 modified CS on the surface of HBN modified with PDA, resulting in the preparation of HP-CS material, which was added into epoxy resin to fabricate a high-efficiency anti-corrosion coating. The test results showed that HP-CS/EP coating exhibited good corrosion resistance with a high impedance modulus.