Flame retardant and the degradation mechanism of high impact polystyrene/Fe-montmorillonite nanocomposites |
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Authors: | Qinghong Kong Ruibin Lv Shijun Zhang |
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Affiliation: | (1) School of the Environment, Jiangsu University, Zhenjiang, Jiangsu, 212013, People’s Republic of China |
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Abstract: | High impact polystyrene/Fe-montmorillonite (HIPS/Fe-MMT) nanocomposites were successfully prepared by melting intercalation.
The nanostructures of HIPS/Fe-MMT were testified by X-ray diffraction (XRD) and transmission electron microscope (TEM). Corresponding
to pure HIPS, the thermal stability of HIPS/Fe-MMT nanocomposites was notably improved. The peaks of heat release rate (PHRR)
and the mass loss rate (MLR) were significantly reduced after the formation of the HIPS/Fe-MMT nanocomposites from cone calorimetry.
And nanocomposites PHRR was further lower with the increase of Fe-MMT content in the range of 1 to 5 wt%. The degradation
mechanism of HIPS and HIPS/Fe-MMT nanocomposites was conducted by pyrolysis gas chromatography mass spectrometry (Py-GC-MS).
And the reason of the enhancement of thermal stability maybe is that structural iron is the operative site for radical trapping
in the Fe-MMT and the nanostructure enhances the interaction of the chains of the HIPS. |
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Keywords: | Fe-montmorillonite Py-GC-MS High impact polystyrene Melting intercalation Nanocomposites Flame retardant |
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