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Pre-constructed Graphene-Ammonium Polyphosphate Aerogel (GAPPA) for Efficient Enhancing Mechanical and Fire-Safety Performances of Polymer

Abstract

The attainment of both robust mechanical and fire-safety performances is a vital requirement for most polymer composites. Due to the unique structure and physical/chemical property, graphene has been reported to act as an attractive additive to ameliorate the properties of polymer. However, several key issues should be resolved in advance before practical application, including complicated dispersion process prior to incorporation into the polymer, low flame retardant efficiency, etc. Herein, a sequential versatile strategy was developed to overcome these problems: 1) fabrication of graphene-ammonium polyphosphate aerogel (GAPPA); 2) backfilling of polymer (taking poly (methyl methacrylate) (PMMA) as an example). The resulted PMMA/GAPPA composite possessed not only robust mechanical property (e.g. a increase of ca. 100.5% and 130.6% in reduced modulus and hardness, respectively) but also efficient fire-safety performance (e.g. a decrease of ca. 67.2% and 58.7% in peak heat release rate (PHRR) and total heat release (THR), respectively; lower amount of smoke and toxic gases), outperforming those of pure PMMA, PMMA/graphene aerogel (GA) and PMMA/graphene oxide-ammonium polyphosphate (GO-APP) composite synthesized by traditional dispersion method. Our work opens up a promising way for the production of graphene-based polymer composites with superior mechanical and fire-safety performances.

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Publication details

The article was received on 23 Jan 2018, accepted on 08 Feb 2018 and first published on 12 Feb 2018


Article type: Paper
DOI: 10.1039/C8TA00736E
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Pre-constructed Graphene-Ammonium Polyphosphate Aerogel (GAPPA) for Efficient Enhancing Mechanical and Fire-Safety Performances of Polymer

    L. Wang, S. Wu, X. Dong , R. Wang, L. Zhang, J. Wang, J. Zhong, L. Wu and X. Wang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA00736E

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