中国塑料 ›› 2012, Vol. 26 ›› Issue (04): 92-96 .DOI: 10.19491/j.issn.1001-9278.2012.04.018

• 助剂 • 上一篇    下一篇

新型磷-氮膨胀阻燃剂在改性聚丙烯中的应用研究

张翔 张帆   

  1. 公安部四川消防研究所 公安部四川消防研究所
  • 收稿日期:2011-11-23 修回日期:1900-01-01 出版日期:2012-04-26 发布日期:2012-04-26

Study on the Application of Novel P-N Intumescent Flame Retardant in Polypropylene

Xiang ZHANG Fan Zhang   

  • Received:2011-11-23 Revised:1900-01-01 Online:2012-04-26 Published:2012-04-26
  • Contact: Xiang ZHANG

摘要: 采用自制干法合成的磷-氮膨胀型阻燃剂(磷酸酯三聚氰胺盐,IFR)复配聚磷酸胺(APP)和聚四氟乙烯(PTFE)阻燃改性聚丙烯(PP),利用极限氧指数法、垂直燃烧法分析了阻燃PP的燃烧性能,通过热重分析仪、傅里叶变换红外光谱仪、扫描电子显微镜和X射线光电子能谱对阻燃PP的热降解过程、燃烧性能、残炭结构进行分析,并研究了燃烧过程中复配阻燃体系对PP的阻燃机理。结果发现,IFR、APP和PTFE之间有明显的阻燃协效作用;当阻燃剂总添加量为24 %(APP为6 %,IFR为17.5 %,PTFE为0.5 %)(质量分数)时,阻燃PP的极限氧指数达到30.1 %,垂直燃烧测试达UL 94 V-0级;阻燃剂加入的同时能提高PP的热稳定性。

关键词: 聚丙烯, P-N膨胀阻燃剂, 阻燃机理

Abstract: In this work, a flame retardant system containing P-N intumescent flame retardant (melamine phosphate, IFR), ammonium polyphosphate (APP), and polytetrafluoroethylene (PTFE) was applied in polypropylene (PP). The burning property of the IFR/APP/PTFE system flame retarded PP was tested by limited oxygen index and UL 94 measurement. Using thermogravimetric, Fourier transform infrared spectroscopy, scanning elecreon microscope, and X-ray photoelectron spectroscopy, the burning property, thermal degradation process, and the components of residual carbon of flame retarded PP were analyzed, and the flame retardancy mechanism of PP/IFR/APP/PTFE system was studied. It showed that the IFR/APP/PTFE flame retardant system showed significant synergistic effect, and the PP/IFR/APP/PTFE could reach a limited oxygen index value of 30.1 % and UL 94 V-0 with only 24 % IFR/APP/PTFE flame retardant (APP 6 %, IFR17.5 %, PTFE 0.5 %). In addition, the thermal stability of PP was improved by the introduction of the flame retardant.

Key words: polypropylene, P-N intumescent flame retardant, flame retardant mechanism

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