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

作　　者：Si-Yi Xu Dan-Yi Li Wen-Rui Wang Lin Lin Ying Sun Ji-Hao Li Lin-Fan Li 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2025年第2期27-39,共13页核技术(英文)

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

关 键 词：MXene@Ag@PA Ethylene-vinyl acetate(EVA) Flame retardancy Electromagnetic shielding performance 

分 类 号：TN03[电子电信—物理电子学] TB332[一般工业技术—材料科学与工程]