点击次数：

影响因子：3.3

DOI码：10.1002/adem.202501142

所属单位：Nanjing University of Aeronautics and Astronautics

教研室：State Key Laboratory of Mechanics and Control of M

发表刊物：Advanced Engineering Materials

关键字：epoxy resins, graphene nanosheets, hygrothermal agings, echanical properties, molecular dynamics

摘要：This study explores the hygrothermal aging resistance of graphene nanosheet (GN)-reinforced epoxy composites via a combined experimental and molecular dynamics (MD) simulation approach. Epoxy systems with 0–1.0 wt% GN are fabricated and aged at 80 °C for 516 h. Optimal performance is achieved at 0.75 wt% GN, exhibiting improved tensile strength, impact toughness, hardness, and glass transition temperature. GN addition reduces moisture uptake and diffusion by physically obstructing water pathways and restricting chain mobility. Scanning electron microscopy analysis shows suppressed crack formation, while MD simulations reveal that GN enhanced interfacial bonding, decreases fractional free volume, reduces mean square displacement, and limits water-induced hydrogen bonding. Notably, GN increases interfacial interaction energy by up to 96.4% relative to water–epoxy bonding. These results demonstrate a multiscale reinforcement mechanism and offer a rational strategy for designing durable epoxy composites for aerospace and electronic packaging applications.

备注：https://advanced.onlinelibrary.wiley.com/doi/full/10.1002/adem.202501142

学科门类：工学

文献类型：J

卷号：27

期号：18

是否译文：否

发表时间：2025-07-30

收录刊物：SCIE

合写作者：H. Zhang,Gai Zhao,Huafeng Li,Lin Yang

通讯作者：Qingjun Ding