Abstract
We have prepared a series of graphene/epoxy composite films by thermal curing of diglycidyl ether of bisphenol-A with an amine-functionalized agent casted on a polyimide film, and investigated their structures and electrical properties as a function of graphene content of 0.0–10.0wt%. X-ray diffraction patterns and TEM images show that graphene nanoplatelets are well dispersed in the epoxy resin matrix. The electrical resistance of the composite films varies dramatically from ∼1013 to ∼103Ω with increasing the graphene content, especially at a certain graphene content between 1.0 and 2.0wt%. Accordingly, electric heating behavior of the composite films with 2.0–10.0wt% graphene is strongly dependent on graphene content as well as applied voltage. For the composite film with 10.0wt% graphene, a maximum temperature of ∼126°C is stably maintained over a cyclic voltage variation of 30V. The excellent electric heating performance such as rapid temperature response, high electric power efficiency, and operational stability at applied voltages is believed to be owing to the presence of highly conductive graphene sheets interconnected in the thermosetting epoxy matrix.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
