中国塑料 ›› 2016, Vol. 30 ›› Issue (01): 98-103 .DOI: 10.19491/j.issn.1001-9278.2016.01.017

• 助剂 • 上一篇    下一篇

氮-磷-硫膨胀型阻燃剂在聚碳酸酯中的应用研究

胡志勇,荆洁,刘书艳,马雪梅   

  1. 中北大学
  • 收稿日期:2015-08-17 修回日期:2016-02-25 出版日期:2016-01-26 发布日期:2016-01-26

Study on Application of N-P-S Intumescent Flame Retardant in Polycarbonate

  • Received:2015-08-17 Revised:2016-02-25 Online:2016-01-26 Published:2016-01-26

摘要: 将氮磷硫膨胀型阻燃剂(NPS)添加到聚碳酸酯(PC)中制备了阻燃聚碳酸酯复合材料。通过极限氧指数、垂直燃烧、热失重分析仪和锥形量热仪研究了NPS对PC阻燃性能和热稳定性能的影响。结果表明,当NPS的添加量为0.075 %(质量分数,下同) 时,体系的极限氧指数达到最大值34.25 %,垂直燃烧等级为V-0级;NPS的加入使PC的起始分解温度由419.7 ℃ 降至389.0 ℃,残炭率由15.26 %增加至20.8 %,同时能有效降低PC的热释放速率(HRR)和总热释放量(THR)。

关键词: 聚碳酸酯, 氮磷硫膨胀型阻燃剂, 阻燃性能, 热稳定性

Abstract: A flame retardant (NPS) was added to polycarbonate (PC), and the flame retardant performance and thermal stability of the resultant PC composite were studied through limiting oxygen index and vertical burning, thermo-gravimetric analyzer (TGA), and cone calorimeter instrument. When the NPS loading was 0.075 %, the limiting oxygen index reached the maximum 37.5 %, vertical combustion grade reached V-0 level. NPS decreased the initial decomposition temperature of PC from 419.7 to 389.0 ℃, the carbon residue rate increased from 15.26 % to 20.8 %, at the same time the heat release rate (HRR) and total heat release (THR) were also reduced.

Key words: polycarbonate, nitrogen-phosphorus-sulfur intumescent flame retardant, flame retardancy, thermal stability