Effect of graphene nanosheets on morphology, thermal stability and flame retardancy of epoxy resin

Liu, Shan and Yan, Hongqiang and Fang, Zhengping and Wang, Hao (2014) Effect of graphene nanosheets on morphology, thermal stability and flame retardancy of epoxy resin. Composites Science and Technology, 90. pp. 40-47. ISSN 0266-3538

Abstract

Effect of graphene nanosheets (GNS) on morphology, thermal stability and flame retardancy of epoxy resin (ER) was investigated. GNS was partially exfoliated, large and flat graphene flakes exists in ER/GNS nanocomposites. GNS changed the decomposition pathway of ER at high temperature, enhanced the thermal stability and promoted the formation of char residue. The compactness of both the surface and the bottom char residues were significantly improved with the addition of GNS. Furthermore, GNS can effectively decrease melt flow and inhibit the flammable drips of ER during combustion. Incorporation of 3wt% of GNS increased the LOI value of ER from 15.7 to 21.0 and reduced the total heat release from 33.37 to 28.20kJ/m2. The peak heat release rate presented earlier increase and later decrease trend with the increase of GNS content due to the competition between the effect of thermal conductivity and barrier property of GNS.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Elsevier Ltd. Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 27 Nov 2013 01:35
Last Modified: 01 Jul 2016 04:05
Uncontrolled Keywords: graphene nanosheets; nanocomposites; thermal properties
Fields of Research : 10 Technology > 1007 Nanotechnology > 100707 Nanomanufacturing
03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030602 Chemical Thermodynamics and Energetics
10 Technology > 1007 Nanotechnology > 100704 Nanoelectromechanical Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
Identification Number or DOI: 10.1016/j.compscitech.2013.10.012
URI: http://eprints.usq.edu.au/id/eprint/24298

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