RT Journal Article
T1 Free-standing graphene films embedded in epoxy resin with enhanced thermal properties
A1 Bustero, Izaskun
A1 Gaztelumendi, Idoia
A1 Obieta, Isabel
A1 Mendizabal, María Asun
A1 Zurutuza, Amaia
A1 Ortega, Amaya
A1 Alonso, Beatriz
AB The poor thermal conductivity of polymer composites has long been a deterrent to their increased use in high-end aerospace or defence applications. This study describes a new approach for the incorporation of graphene in an epoxy resin, through the addition of graphene as free-standing film in the polymeric matrix. The electrical and thermal conductivity of composites embedding two different free-standing graphene films was compared to composites with embedded carbon nanotube buckypapers (CNT-BP). Considerably higher thermal conductivity values than those achieved with conventional dispersing methods of graphene or CNTs in epoxy resins were obtained. The characterisation was complemented with a study of the structure at the microscale by cross-sectional scanning electron microscopy (SEM) images and a thermogravimetric analysis (TGA). The films are preconditioned in order to incorporate them into the composites, and the complete manufacturing process proposed allows the production and processing of these materials in large batches. The high thermal conductivity obtained for the composites opens the way for their use in demanding thermal management applications, such as electronic enclosures or platforms facing critical temperature loads.
SN 2522-0128
YR 2020
FD 2020-03
LA eng
NO Bustero , I , Gaztelumendi , I , Obieta , I , Mendizabal , M A , Zurutuza , A , Ortega , A & Alonso , B 2020 , ' Free-standing graphene films embedded in epoxy resin with enhanced thermal properties ' , Advanced Composites and Hybrid Materials , vol. unknown , no. 3 , pp. 31-40 . https://doi.org/10.1007/s42114-020-00136-6
NO Publisher Copyright: © 2020, The Author(s).
DS TECNALIA Publications
RD 22 jul 2024