MWNTs-OH/PET纳米复合材料的燃烧性能与阻燃机理研究  

Combustion property and flame-retardant mechanism of MWNTs/PET composites

作　　者：张建军[1] 张靖宗[1] 纪全[1] 夏延致[1] 孔庆山[1] 

机构地区：[1]青岛大学纤维新材料和现代纺织国家重点实验室培育基地,山东青岛266071

出　　处：《功能材料》2010年第3期394-396,400,共4页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)前期研究专项资助项目(2006CB708603)

摘　　要：用原位聚合方法制备了纯PET和MWNTs-OH/PET纳米复合材料,用锥形量热仪测试了4种样品的燃烧性能,用场发射扫描电镜表征了纳米复合材料的微观机构。对比分析了4种样品的燃烧性能、烟及毒气释放量。结果表明复合材料的热释放速率(HRR)峰值及平均值,总放热量(THR)和有效燃烧热(EHC)平均值都有所降低,纳米复合材料的CO生成速率峰值较平缓且低于纯PET的CO生成速率,没有增加PET材料的毒性。从扫描电镜图和锥形量热仪测试结果可以初步断定,MWNTs-OH/PET纳米复合材料属于气相阻燃和凝固相阻燃机理。（MWNTs-OH）/PET nanocomposites have been synthesized via the in-situ method.Combustion property of the samples were tested by cone calorimetry.The microstructure of the samples were characterized by SEM.The flame retardance,smoke and toxic gas release and the fire retardant mechanism of the samples were analyzed in detail.The results show that the mean heat release rate（HRR）,the peak heat relaease rate（pHRR）,the total heat release（THR） and the mean of effective heat combustion（mEHC） of MWNTs-OH/PET nanocomposites are all lower than those of pure PET.The CO production rate curve diagrams of MWNTs-OH/PET nanocomposites are gentlier than that of pure PET and the CO peak production rate of MWNTs-OH/PET nanocomposites were lower than that of pure PET,and from the SEM photograph and cone calorimetry results,MWNTs-OH plays a part in gas-phase and condensed-phaseflame retardant.

关 键 词：多壁碳纳米管 聚对苯二甲酸乙二酯 纳米复合材料 阻燃机理 扫描电镜 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]