Influence of Thickness and Lateral Size of Graphene Nanoplatelets on Water Uptake in Epoxy/Graphene Nanocomposites

Applied Sciences

Alberto Jiménez-Suárez¹  Alejandro Ureña¹  SilviaG. Prolongo¹  Rocío Moriche¹ 

[1] Materials Science and Engineering Area, Universidad Rey Juan Carlos, Calle Tulipan, s/n, 28933 Móstoles, Spain;

关键词: graphene nanoplatelet;    epoxy composite;    water absorption;   

DOI  :  10.3390/app8091550

来源: DOAJ

【 摘 要 】

In this study, the hydrothermal resistance of an epoxy resin (aircraft quality) reinforced with graphene is analyzed. Different geometries and aspect ratios (thickness and lateral dimensions) of graphene nanoplatelets were studied. The addition of these graphene nanoplatelets induces important advantages, such as an increase of the glass transition temperature and stiffness and an enhancement of barrier properties of the epoxy matrix, in spite of the excellent behavior of pristine resin. The effectiveness of graphene nanoplatelets increases with their specific surface area while their dispersion degree is suitable. Thinner nanoplatelets tend to wrinkle, decreasing their efficiency as nanofillers. Graphene used as reinforcement not only reduces the absorbed moisture content but also decreases its effect on the thermal and mechanical properties related to the matrix.

【 授权许可】

Unknown