金属化合物在PE-HD膨胀阻燃体系中的协同作用  

Synergism of Metallic Compounds in PE-HD/IFR System

作　　者：杨凯[1] 卢忠远[1] 刘辉[1] 韦忠宇[1] 宋丽贤[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《中国塑料》2009年第5期86-90,共5页China Plastics

基　　金：国家高技术研究发展计划(863计划)项目(2003AA333030)

摘　　要：研究了几种金属化合物对PE-HD膨胀阻燃体系(IFR)的协同作用,通过极限氧指数(LOI)、DSC-TG、SEM对复合材料的阻燃、热稳定性和成炭情况进行研究,分析了金属化合物与膨胀阻燃剂协效作用机理。结果表明,当ZEO、ZnO、Al2O3添加量分别为3%(质量百分比,下同)1、%3、%时,极限氧指数达到29.6%2、9.0%2、9.4%,比单独添加IFR分别高出4.6%、4.0%和4.4%;DSC-TG和SEM结果表明,ZEO、ZnO、Al2O3主要通过促进PE-HD/IFR体系凝聚相快速成炭,稳定炭层强度来发挥其协效作用,而对最终成炭量贡献不大。This paper studied the synergism effect between IFR and metallic compounds. The flame retardancy, thermal stability, and the char layer were analyzed by LOI, DSC-TG, and SEM. The synergism effect mechanism of metallic compounds was discussed. For systems containing 3 % ZEO, 1 % ZnO, and 3 % Al2O3, LOI of 29.6, 29.0 and 29.4 were achieved, respectively, 4. 6, 4.0 and 4. 4 higher than neat IFR system. DSC-TG and SEM indicated that ZEO, ZnO, and Al2O3 promoted the formation and strengthening of charring layer in the PE-HD/IFR system, however, the quality of charring layer was little improved.

关 键 词：高密度聚乙烯 金属化合物 膨胀型阻燃剂 协效作用 机理 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]