中国塑料 ›› 2009, Vol. 23 ›› Issue (07): 85-89 .DOI: 10.19491/j.issn.1001-9278.2009.07.019

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纳米SiO2与RDP协同阻燃PC/ABS的研究

钟柳 楚红英 刘治国   

  1. 西华大学理化学院 黄河职业技术学院环境与化学工程系 西华大学理化学院
  • 收稿日期:2009-04-16 修回日期:2009-05-29 出版日期:2009-07-26 发布日期:2009-07-26

Flame Retardancy of Nano-SiO2 and RDP Flame Retarded PC/ABS and Their Synergism

ZHONG Liu CHU Hong-ying LIU Zhi-guo   

  • Received:2009-04-16 Revised:2009-05-29 Online:2009-07-26 Published:2009-07-26
  • Contact: LIU Zhi-guo

摘要: 采用间苯二酚双(二苯基磷酸酯)(RDP)及其与纳米SiO2复配制备双酚A聚碳酸酯/丙烯腈-丁二烯-苯乙烯(PC/ABS)阻燃材料,测定了阻燃PC/ABS的极限氧指数、UL94V阻燃性能及热稳定性,采用扫描电子显微镜(SEM)观察了阻燃PC/ABS于600 ℃热分解残余物的形态,采用锥形量热仪测定了阻燃PC/ABS的释热速率峰值(p-HRR)、释热速率平均值(av-HRR)、总释热量(THR)、平均有效燃烧热(av-EHC)和平均质量损失速度(av-MLR)。结果表明,纳米SiO2与RDP添加量分别为5 %和9 %时,PC/ABS的阻燃性能达UL94V-0级,极限氧指数为29.0 %,且阻燃PC/ABS的p-HRR、av-HRR、THR、av-EHC以及av-MLR分别下降了16.12 %、58.82 %、40.83 %、17.91 %和36.90 %,同时也证明了纳米SiO2与RDP具有非常好的协同阻燃效应。

关键词: 间苯二酚双(二苯基磷酸酯), 聚碳酸酯, 丙烯腈-丁二烯-苯乙烯共聚物, 阻燃性能, 协同效应

Abstract: Blends of bisphenol-A polycarbonate/acrylonitrile-butadiene-styrene(PC/ABS) were flame-retarded by resorcinol bis(diphenyl phosphate) (RDP) and nano-SiO2. The limiting oxygen index, UL94V flame retardancy, and thermal stability of the flame-retarded PC/ABS were measured. The morphology of the pyrolysis residue was investigated by SEM. Cone calorimeter (CONE) was employed to determine peak heat release rate (p-HRR), average heat release rate (av-HRR), total heat rate (THR), average effective combustion heat (av-EHC), and average mass lose rate (av-MLR). When the loadings of nano-SiO2 and RDP were 5 %and 9 %, respectively, a limiting oxygen index of 29 % and V-0 grade were obtained. The values of p-HRR, av-HRR, THR, av-EHC, and av-MLR were decreased by 16.12 %, 58.82 %, 40.83 %, 17.91 %, and 36.90%, respectively.

Key words: resorcinol bis(diphenyl phosphate), polycarbonate, acrylonitrile-butadiene-styrene copolymer, flame retardancy, synergism