Water absorption of epoxy adhesives reinforced with amino-functionalized graphene oxide nanoparticles

The dataset provides experimental data on water absorption by room-temperature amine cured epoxy adhesive widely used in automotive, aerospace, construction, and marine industries. Amino-functionalized graphene oxide (mGO) nanoparticles were incorporated into the epoxy (0.34, 0.68, and 1.72 wt.%: 0.34mGO, 0.68mGO and 1.72mGO, respectively) enabled cross-linking reactions and providing high interfacial adhesion, superior reinforcement efficiency and enhanced resistance to hydrothermal ageing of nanocomposites. Samples were conditioned in distilled water at 20°C and 50 °C for 12 months. Anomalous water absorption accompanied by progressive weight loss of samples related to leaching of low molecular weight epoxy species was observed. Addition of mGO greatly contributed to the decreased diffusivity and leaching of epoxy. Data can be useful for modelling non-Fickian water diffusion in epoxy/graphene based nanocomposites.

本数据集提供了广泛应用于汽车、航空航天、建筑及船舶工业的室温胺固化环氧胶粘剂的吸水性能实验数据。将氨基功能化氧化石墨烯（mGO）纳米颗粒掺入环氧树脂中（添加量分别为0.34、0.68和1.72 wt.%，对应样品记为0.34mGO、0.68mGO及1.72mGO），可实现交联反应，提升纳米复合材料的界面粘结强度、优异的增强效率以及抗水热老化性能。将样品置于20℃及50℃的蒸馏水中进行为期12个月的老化处理。实验观察到反常吸水现象，伴随样品重量逐渐下降，该现象与低分子量环氧组分的浸出有关。掺入mGO可显著降低环氧树脂的扩散性与浸出程度。本数据集可用于构建环氧/石墨烯基纳米复合材料的非菲克水扩散模型。