高等学校化学学报

高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (2): 467.doi: 10.7503/cjcu20120497

• 高分子化学 • 上一篇    下一篇

酸碱处理蒙脱土与磷酸酯阻燃剂复配阻燃PC/ABS合金

冉诗雅1,2, 许远远1,2, 郭正虹1, 方征平1,2   

  1. 1. 浙江大学宁波理工学院高分子材料与工程研究所, 宁波 315100;
    2. 高分子合成与功能构造教育部重点实验室, 浙江大学高分子复合材料研究所, 杭州 310027
  • 收稿日期:2012-05-25 出版日期:2013-02-10 发布日期:2013-01-21
  • 通讯作者: 郭正虹,女,博士,副教授,主要从事高分子材料改性方面的研究.E-mail:guozhenghong@nit.zju.edu.cn E-mail:guozhenghong@nit.zju.edu.cn
  • 基金资助:

    浙江省重点科技创新团队(批准号: 2009R50004)资助.

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

RAN Shi-Ya1,2, XU Yuan-Yuan1,2, GUO Zheng-Hong1, FANG Zheng-Ping1,2   

  1. 1. Laboratory of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China;
    2. Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, China
  • Received:2012-05-25 Online:2013-02-10 Published:2013-01-21

PDF (PC)

被引次数

30

摘要：

采用酸碱处理法对蒙脱土进行有机化改性, 再将酸碱处理的蒙脱土与磷酸酯阻燃剂复配, 作为聚碳酸酯/丙烯腈-丁二烯-苯乙烯三元共聚物(PC/ABS)合金的阻燃体系, 并表征了酸碱处理蒙脱土对合金的热稳定性和阻燃性能. 结果表明, 间苯二酚双(二苯基磷酸酯)改性的蒙脱土(BDP-MMT)使阻燃PC/ABS合金的起始分解温度降低, 而酸碱处理蒙脱土却使合金的起始分解温度有所提高; BDP-MMT的加入会恶化碳层的阻隔性能, 而酸碱处理蒙脱土却可以增加碳层的稳定性, 使第二热释放峰值出现的时间延迟, 且适合的酸浓度处理蒙脱土可以使合金通过UL-94 V-0级检验.

关键词: 聚碳酸酯, 丙烯腈-丁二烯-苯乙烯三元共聚物, 磷酸酯, 蒙脱土, 酸碱处理, 阻燃剂

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

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