A special core-shell material (Mxene@Ag@Phytate) to improve EVA composite fire safety, radiation crosslinking effect, and electromagnetic shielding

High-performance MXene-based polymer nanocomposites are well suited for various industrial applications due to their excellent mechanical, thermal and other properties. However, fabrication of flame-retardant polymer/MXene nanocomposites remains a challenging task due to the limited flame-retardant properties of MXene itself. In this study, a novel MXene@Ag@PA hybrid material was prepared by radiation modification and complexation reaction, which can be used to further enhance the key properties of ethylene vinyl acetate (EVA), such as mechanical properties, thermal conductivity, flame retardancy and electromagnetic shielding. The addition of two parts of this hybrid material increases the thermal conductivity of EVA by 44.2% and reduces its peak exothermic rate during combustion by 30.1% compared to pure EVA. The material also significantly reduced smoke production and increased residue content. In the X-band, the electromagnetic shielding effectiveness of the EVA composites can reach 20 dB, and we also found that the MXene@Ag@PA hybrid material can be used to further enhance the mechanical properties of EVA composites under electron beam irradiation. This study contributes to the development of MXene-based EVA advanced materials that are fire-safe, high-strength, and have good electromagnetic shielding performance for various applications.