中国塑料 ›› 2008, Vol. 22 ›› Issue (12): 84-87 .DOI: 10.19491/j.issn.1001-9278.2008.12.019

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有机蒙脱土和氢氧化镁对PS的协同阻燃作用研究

刘继纯;付梦月;李晴媛;张玉清   

  1. 河南科技大学化工与制药学院,高分子科学与纳米技术重点实验室,河南 洛阳 471003
  • 收稿日期:2008-09-03 修回日期:1900-01-01 出版日期:2008-12-26 发布日期:2008-12-26

Synergistic Effect of OMMT and MH on the Flame Retardancy of PS

LIU Ji-chun; FU Meng-yue;LI Qing-yuan; ZHANG Yu-qing   

  1. School of Chemical Engineering & Pharmaceutics, Key Laboratory of Polymer Science and Nanotechnology, Henan University of Science and Technology, Luoyang 471003, China
  • Received:2008-09-03 Revised:1900-01-01 Online:2008-12-26 Published:2008-12-26
  • Contact: LIU Ji-chun

摘要: 将聚苯乙烯(PS) 树脂与有机蒙脱土(OMMT) 和表面改性的氢氧化镁(MH) 直接熔融复合制备了PS/MH/OMMT复合材料,采用X射线衍射对复合材料的微观结构进行了分析,分别用水平燃烧试验、氧指数试验和高温处理试验研究了复合材料的阻燃性能。结果表明:OMMT 与PS熔融复合后,其片层间距从1.46 nm增加至3.30 nm,表明与PS分子链形成了插层复合结构,MH的引入并不影响纳米插层结构的形成。OMMT与MH并用时可以显著减少复合材料在燃烧时的滴落和发烟性,材料在高温下更加稳定,阻燃性能更好,从而可以减少阻燃剂的用量。

关键词: 聚苯乙烯, 氢氧化镁, 有机蒙脱土, 协同作用, 阻燃性能

Abstract: PS resin, organically modified montmorillonite (OMMT), and surface modified magnesium hydroxide (MH) were melt blended forming a composite. The structure of the composites was analyzed using X-ray diffraction. The flame-retardant property of the composites was investigated by employing horizontal burning, oxygen index, and high temperature treatment. It was found that the interlayer space of OMMT was increased from 1.46 nm to 3.30 nm after melt blending with PS, indicating a structure of intercalation occurred. The introduction of MH did not affect the formation of the intercalation structure. The coexistence of OMMT and MH decreased the melt dripping and smoke emitting of the composites during burning. The PS/MH/OMMT composite exhibited better stability and flame retardancy than its PS/MH counterpart. As a result, the amount of flame retardants could be greatly decreased.

Key words: polystyrene, magnesium hydroxide, organically modified montmorillonite, synergistic effect, flame retardancy

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