中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (05): 25-29 .DOI: 10.19491/j.issn.1001-9278.2008.05.005

• 材料与性能 • 上一篇    下一篇

BDP阻燃PC/ABS及其纳米复合材料的阻燃性和热降解动力学

钟柳，刘治国，欧育湘   

  1. 1.西华大学理化学院，四川成都610039 ; 2. 北京理工大学国家阻燃材料实验室，北京100081
  • 收稿日期:2007-12-20 修回日期:1900-01-01 出版日期:2008-05-25 发布日期:2008-05-25

Flame Retardancy and Kinetics of Thermal Degradation of Flame Retardant PC/ABS and Its Nanocomposites

ZHONG Liu，LIU Zhi-Guo，OU Yu-xiang   

  1. 1.College of Physics and Chemistry, Xihua University, Chengdu 610039，China; 2. China National Laboratory of Flame-Retarded Materials, Beijing Institute of Technology, Beijing 100081，China
  • Received:2007-12-20 Revised:1900-01-01 Online:2008-05-25 Published:2008-05-25
  • Contact: ZHONG Liu

摘要： 采用双螺杆挤出机挤出造粒制备了苯基双酚A二磷酸酯(BDP)阻燃的聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯(ABS)、PC/ABS有机蒙脱土(OMMT)和PC/ABS有机改性纳米二氧化(SiO2)3种复合材料，采用热重分析探讨了PC/ABS/BDP , PC /ABS/BDP/OMMTPC/ABS/BDP/SiO2复合材料的热降解动力学行为，以此分析其阻燃性能与热降解行为的关系。结果表明，加入纳米材料后，在质量损失8%以前，PC/ABS/BDP/OMMT和PC/ABS/BDP/SiO2纳米复合材料的活化能均低于PC/ABS/BDP的活化能，但质量损失8%以后，PC/ABS/BDP/OMMT和
PC/ABS/BDP/SiO2复合材料的活化能均高于阻燃PC/ABS。在质量损失5%-75%范围内，PC/ABS/BDP/OMMT和PC/ABS/BDP/SiO2平均活化能分别为139.39KJ/mol和144.17KJ/mol，均高于PC/ABS/BDP的平均活化能(104.87 kJ /mol),说明添加纳米材料后，由于BDP与OMMT或SiO2的协同阻燃作用，降低了材料的热降解速率，增大了材料的热稳定性，这与氧指数测试、UL94V阻燃性能及热重分析得出的结沦一致。

关键词: 聚碳酸酯, 丙烯睛-丁二烯-苯乙烯共聚物, 苯基双酚A二磷酸酯, 阻燃, 热降解动力学

Abstract: hina
Abstract:Composites of polycarbonate/acrylonitrile-butadiene-styrene copolymer (PC/ABS)，Pc/APS/organic montmorillonitc (OMMT)，and PC/nBS/organic-modified nano-SiO2(SiO2)flame retarded by bisphcnol A di(phosphatc phenyl ester)(BDP) were prepared via extrusion and granulation using a twin-screw extruder. By means of TG，their thermal decomposition kinetic behaviors in nitrogen atmosphere were studied. Before 8 % mass loss, the activation energy of the PC/ABS/BDP/OMMT and PC/ABS/BDP/SiO2 nancomposites was lower than that of PC/ABS/BDP. However the opposite was observed after 8% mass loss. The average activation energy of PC/ABS/BDP/OMMT and PC/ABS/BDP/SiO2 were 139.39 kJ /mol and 144.17 KJ/mol in 5一75 % mass loss, respectively, all greater than that of PC/ABS/BDP(104.87 kJ/mol).It was found that with OMMT or SiO2 added，the thermal dccomposition speed of PC/ABS/BDP decreased and the thermal stability increased，as confirmed by the measurements of TG，limiting oxygen index, and UL94 V flame retardancy.

Key words: polycarbonatc, acrylonitrilc-butadiene-styrene copolymer, bisphcnol A di(phosphatc phenyl

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