中国塑料 ›› 2009, Vol. 23 ›› Issue (04): 71-75 .DOI: 10.19491/j.issn.1001-9278.2009.04.018

• 助剂 • 上一篇    下一篇

无卤磷氮阻燃剂的合成及在PC阻燃中的应用

汤俊杰 唐安斌 黄杰   

  1. 西南科技大学材料科学与工程学院
  • 收稿日期:2008-12-15 修回日期:1900-01-01 出版日期:2009-04-26 发布日期:2009-04-26

Synthesis of Halogen-free Phosphorus-nitrogen Containing Flame Retardant and Its Flame Retardancy in PC

TANG Jun-Jie   

  • Received:2008-12-15 Revised:1900-01-01 Online:2009-04-26 Published:2009-04-26
  • Contact: TANG Jun-Jie

摘要: 以9, 10-二氢-9-氧杂-10-膦菲-10-氧化物(DOPO)和N-苯基马来酰亚胺(N-PMI)为原料,合成了一种新型无卤含氮氧杂膦菲阻燃剂DOPMI,通过FT-IR、LC-MS、TG和DSC对DOPMI做了结构表征和热性能分析。研究了DOPMI及与其他阻燃剂复配应用于聚碳酸酯(PC)后对阻燃性能、力学性能、热分解行为及残炭形貌的影响。结果表明:含3%DOPMI、2%甲基苯基聚硅氧烷(MPS)和24%含磷阻燃PET的PC体系阻燃级别达UL 94 V-0级,LOI提高到30.4%;阻燃剂的加入使PC的缺口冲击强度和拉伸强度有所降低;DOPMI虽不能增加PC的成炭率,但可加速PC交联成炭;此外,SEM照片显示,DOPMI能促使PC发泡,MPS能起到协效阻燃的作用。

关键词: 无卤, 含氮氧杂膦菲, 阻燃剂, 聚碳酸酯, 协效作用

Abstract: A novel halogen-free nitrogen-contained phosphaphenanthrene flame retardant DOPMI was synthesized from 9,10-dihydro-9-oxa-10- phosphaphenanthrene-10-oxide (DOPO) and N-phenyl maleimide (N-PMI). DOPMI was characterized by FT-IR, LC/MS, TG and DSC. The effect of DOPMI and other flame retardants on the flame-retardancy, mechanical properties, thermal degradation behavior, and charmorphology of PC was investigated after blending these retardants with PC. Results showed that LOI was raised to 30.4% and V-0 rating was observed from UL 94 when 3% DOPMI, 2% methyl phenyl silicone (MPS) and 24% phosphorus-containing flame-retardant PET were blended with PC. Notched impact strength and tensile strength decreased after the flame retardants were added. DOPMI couldn’t improve the char yield of PC, but it could accelerate crosslinking and char forming of PC. Additionally, SEM photos indicated that DOPMI could promote PC foaming, and MPS had the synergistic effect on PC.

Key words: halogen-free, nitrogen-contained phosphaphenanthrene, flame retardant, polycarbonate, synergistic effect

中图分类号: