膨胀蛭石协同膨胀型阻燃剂阻燃HDPE研究  

Study on HDPE Retarded by Intumescent Flame Retardants with Synergistic Exfoliated Vermiculate

作　　者：亓云霞[1] 任强[1] 李锦春[1] 李坚[1] 

机构地区：[1]常州大学材料科学与工程学院,常州市高分子新材料重点实验室,江苏常州213164

出　　处：《现代塑料加工应用》2011年第6期36-39,共4页Modern Plastics Processing and Applications

基　　金：江苏省产学研联合创新资金计划(前瞻性研究,项目号BY2010124)资助

摘　　要：利用膨胀蛭石(EVMT)与聚磷酸铵(APP)和三羟乙基异氰脲酸酯复配而成的膨胀型阻燃剂(IFR)协同阻燃高密度聚乙烯(HDPE)。探讨了EVMT含量对阻燃HDPE(FRPE)的极限氧指数(LOI)、锥形量热参数、热稳定性能的影响。结果表明,用少量EVMT部分代替IFR时,可以提高FRPE材料的LOI,降低体系的热释放速率峰值,延缓降解和燃烧过程。能量散射光谱(EDS)分析表明,EVMT中有质量分数高达4.8%的铁元素,铁元素的存在有利于其协同阻燃效果的提高。EVMT was used as a synergistic agent with intumescent flame retardants （IFR） composed of ammonium polyphosphate （APP） and tri-（2-hydroxyethyl） isocyanu- rate to improve the flame retardancy of HDPE. The effects of the loading of EVMT on LOI, the parameters of cone calorimetry, thermal stability were investigated. The re- sults show that when a small part of IFR is substituted by EVMT, LOI of HDPE can be increased, the peak values of heat release rate is lower, the process of degradation and combustion can be delayed. EDS analysis results reveal that the mass ratio of iron element is 4.8%, which may be responsible for the high synergistic effect.

关 键 词：膨胀蛭石 协同作用 膨胀型阻燃剂 高密度聚乙烯 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]