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Open AccessArticle

Fire Properties of Acrylonitrile Butadiene Styrene Enhanced with Organic Montmorillonite and Exolit Fire Retardant

1
Faculty of Materials Science and Engineering, Technical University “Gheorghe Asachi” of Iasi, 700050 Iasi, Romania
2
C-MAST, Department of Electromechanical Engineering, University of Beira Interior, Calçada Fonte do Lameiro, 6201-100 Covilhã, Portugal
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(24), 5433; https://doi.org/10.3390/app9245433
Received: 22 November 2019 / Revised: 5 December 2019 / Accepted: 10 December 2019 / Published: 11 December 2019
(This article belongs to the Special Issue Polymeric Composites Reinforced with Nanoparticles)
In this paper an experimental investigation on fire retardancy of a new polymer nanocomposite derived from organic montmorillonite and exolit fire retardant in an acrylonitrile- butadiene-styrene copolymer by analyzing the flammability and fire behavior is described. The samples were prepared by melting and mixing nanocomposites and fire retardant in different concentrations in an acrylonitrile-butadiene-styrene base polymer. It was found that using only one component (organic montmorillonite or fire retardant) the burning stops in 10 s on the sample. Confirmation of synergy in flammability by combining both montmorillonite and flame retardants was noticed and is discussed regarding the flame-retardant mechanisms assessed by means of the Limiting oxygen index (LOI), UL 94, and cone-calorimeter methods. The acrylonitrile- butadiene-styrene preparation with 15–20 wt% fire retardant and 1–2 wt% organic montmorillonite reached a UL-94 V-0 classification, contrasting with the pure acrylonitrile- butadiene-styrene and the acrylonitrile-butadiene-styrene with 15 wt% fire retardant and acrylonitrile-butadiene-styrene with 1–2 wt% organic montmorillonite formulations, which completely burned. Finally, the samples showed a very good synergy going to a higher reduction of the peak heat release rate and to a minimum mass reduction, as obtained from cone calorimeter tests. View Full-Text
Keywords: acrylonitrile-butadiene-styrene; limiting oxygen index (LOI); flame retardant; nanocomposites acrylonitrile-butadiene-styrene; limiting oxygen index (LOI); flame retardant; nanocomposites
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Simionescu, T.M.; Minea, A.A.; Reis, P.N.B. Fire Properties of Acrylonitrile Butadiene Styrene Enhanced with Organic Montmorillonite and Exolit Fire Retardant. Appl. Sci. 2019, 9, 5433.

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