Tailored flame retardancy via nanofiller dispersion state: Synergistic action between a conventional flame-retardant and nanoclay in high-impact polystyrene

Date

2010-09-01

Author

Isitman, Nihat Ali
Kaynak, Cevdet

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Two preparation techniques attempting to disperse nanoclays in high-impact polystyrene matrix yielded different clay dispersion states either as intercalated or phase-separated morphologies. By this means, the influence of micro- and nanocomposite formation on the synergistic flame retardancy between nanoclays and a conventional mineral-type flame-retardant additive, namely aluminium tri-hydroxide, was investigated in terms of limiting oxygen index, horizontal burning rates and cone calorimetric fire properties. Reductions in peak heat release rates in the cone calorimeter were doubled with nanocomposites relative to microcomposites, attributed to char enhancement and lower mass loss rates. This was accompanied by higher limiting oxygen index, lower burning rates and better mechanical properties. In particular, the formation of nanocomposites allowed for the recovery of tensile strength reductions caused by high loadings of aluminium tri-hydroxide in the polymer.

Subject Keywords

Nanoclay, Intercalation, Nanocomposite, Microcomposite, Flame retardancy, Mechanical properties

URI

https://hdl.handle.net/11511/48273

Journal

POLYMER DEGRADATION AND STABILITY

DOI

https://doi.org/10.1016/j.polymdegradstab.2010.05.012

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

N. A. Isitman and C. Kaynak, “Tailored flame retardancy via nanofiller dispersion state: Synergistic action between a conventional flame-retardant and nanoclay in high-impact polystyrene,” POLYMER DEGRADATION AND STABILITY, pp. 1759–1768, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48273.