中国塑料 ›› 2007, Vol. 21 ›› Issue (2): 36-39.

• 材料与性能 • 上一篇    下一篇

铝基复合催化剂作用下溴化聚苯乙烯的制备及应用研究

公维光,辛忠*   

  1. 华东理工大学化学工程联合国家重点实验室有机功能材料研究室,上海200237
  • 出版日期:2007-02-26 发布日期:2021-03-18

Preparation and Application of Brominated Polystyrene Catalyzed by Al-based Complex Catalyst

GONG Wei-guang,XIN Zhong*#br#   

  1. Organic Functional Materials Laboratory, State Key laboratory of Chemical Engineering,East China University of Science and Technology, Shanghai 200237,China
  • Online:2007-02-26 Published:2021-03-18

摘要: 以聚苯乙烯为原料,卤代烃为溶剂,单质澳为嗅化剂,采用铝基复合催化剂体系制备了阻燃剂澳化聚苯乙烯,利用红外光谱、核磁共振谱、元素分析及热重分析对产物的结构和性能进行了研究。考察了催化剂及其不同配比、反应温度及反应时间对嗅化聚苯乙烯性能的影响。结果表明,在复合催化剂三氯化锑一铝的作用下,聚苯乙烯直接澳化制备的澳化聚苯乙烯嗅含量高达66 %  -69%,并且热稳定性好,热失重达5%时的温度为370℃。此外,在聚对苯二甲酸乙二醇醋(PET)中应用性能的研究表明,在其添加量为11%时,PE7,的极限氧指数达到26.5%。

关键词: 溴化聚苯乙烯, 阻燃剂, 复合催化剂

Abstract: Brominated polystyrene (BPS) was prepared in the presence of Al-based complex catalyst by bromination of commercial grade polystyrene (PS) with element bromine in a halo-hydrocarbon solvent.The structure and properties of BPS were studied using IR, NMR,elemental analysis, and TG. The effects of the composition of complex catalysts and reaction conditions (reaction temperature and reaction time) on properties of BPS were discussed.  When the bromination was catalyzed with SbCl3-Al, a weight percent of bromine in BPS around 66%一69%was achieved, which loss only 5%of weight until 370℃.When blended with PET, the limited oxygen index of the latter increased from 21%to 26. 5%.

Key words: brominated polystyrene, flame retardant, complex catalyst

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