Preparation of phosphorus/nitrogen-containing MXene nanohybrids via in situ polymerization and their application in epoxy resins

Abstract

In this paper, functionalized MXene hybrid (MXene-NP) was prepared by in situ polymerization on the surface of MXene using melamine and benzophosphonyl dichloride as raw materials. Furthermore, EP/MXene-NP composites were prepared by blending MXene-NP with epoxy resin (EP). The addition of 2 wt% MXene-NP increased the oxygen index of the EP sample from 21 to 29.4 %, which was a 40 % improvement. In addition, EP/2 % MXene-NP exhibited good inhibition of heat and toxic gases during cone calorimeter test, as evidenced by the 33.8 % reduction in the peak heat release rate (PHRR) as well as 29.5 % and 36.1 % decreases in the CO₂ peak production rate (PCO₂P) and CO peak production rate (PCOP), compared to EP. In addition, due to the good interfacial bonding brought by the organic polymer layer, the impact strength of EP/0.5 % MXene-NP increased from 6.22 kJ/m² of EP to 11.65 kJ/m², an increase of 87.2 %. This study demonstrates a simple and promising strategy to design efficient multifunctional EP-based nanocomposites.