Journal
MATERIALS LETTERS
Volume 66, Issue 1, Pages 187-189Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2011.08.063
Keywords
Nanocomposites; Polymers; Graphene; Fire behaviour
Funding
- Zhejiang Provincial Natural Science Foundation of China [Y4110026]
- Opening Foundation of Zhejiang Provincial Top Key Discipline [20110913]
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Nanocomposites based on poly(vinyl alcohol) (PVA) and graphene nanosheets have been prepared by polymer solution blending and their flame retardant properties have been evaluated by a cone calorimetry test. It has been shown that there is a strong influence of graphene nanosheets on the fire behaviour of the composites with a significant reduction ill peak heat release rate (PHRR) and a much longer time to ignition. Compared to pure PVA, the PHRR of PVA filled with 3 wt.% graphene is reduced by 49%. The flame retardancy of graphene for PVA matrix surpasses that of both Na-MMT and MWNTs with the same addition content. Such a remarkable behaviour might be explained by the forming of a compact, dense and uniform char during combustion. (C) 2011 Elsevier B.V. All rights reserved.
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