Synergistic Flame Retardant of Acid or Alkali-treated Montmrillonite/Phosphate Flame Retardant in PC/ABS Blends

doi:10.7503/cjcu20120497

Abstract

Abstract:

Acid-treated montmrillonite(a-MMT) and alkali-treated montmrillonite(b-MMT) were prepared by modifying Na-montmorillonite(Na-MMT) with hydrochloric acid or sodium hydroxide, which were used with phosphate to synergistic flame retard polycarbonate/acrylonitrile-butadiene-styrene(PC/ABS) blends. Effects of a-MMT and b-MMT on the flammability property and thermal stability of the blends were investigated by X-ray diffraction(XRD), thermogravimetry(TG), microscale combustion calorimeter(MCC), scanning electron microscope(SEM) and so on. The results show that 1,3-benzenenediol polymer with phosphoric trichloride phenyl ester(BDP) modified montmorillonite(BDP-MMT) decreased the initial decomposition temperature of the flame retardant PC/ABS blends, while a-MMT and b-MMT increased it. The addition of BDP-MMT deteriorated the barrier property of carbon layer. But a-MMT and b-MMT enhanced the thermal stability of carbon layer and delayed the time of second peak of heat release rate(PHRR2). Moreover, PC/ABS blends flame resisted by montmrillonite treated with proper acid concentration were classified as UL-94 V-0.

Key words: Polycarbonate, Acrylonitrile-butadiene-styrene, Phosphate, Montmorillonite, Acid-treated and alkali-treated, Flame retardant

CLC Number:

O631

TrendMD:

RAN Shi-Ya, XU Yuan-Yuan, GUO Zheng-Hong, FANG Zheng-Ping. Synergistic Flame Retardant of Acid or Alkali-treated Montmrillonite/Phosphate Flame Retardant in PC/ABS Blends[J]. Chem. J. Chinese Universities, 2013, 34(2): 467.

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Synergistic Flame Retardant of Acid or Alkali-treated Montmrillonite/Phosphate Flame Retardant in PC/ABS Blends

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