摘要
采用新型磷系阻燃剂(FR)与聚磷酸铵组成的膨胀型阻燃剂(IFR)制备了膨胀型无卤阻燃环氧树脂(EP)材料。通过氧指数、热失重和扫描电镜等研究IFR对环氧树脂的阻燃性能、热降解行为及微观结构的影响。结果表明:加入IFR使材料的阻燃性能明显提高,IFR/EP的氧指数达到37.6%,600℃时IFR/EP的残炭量较纯EP从21.24%增至43.08%。扫描电镜观察发现,经IFR阻燃的EP在燃烧时形成了由封闭孔洞构成的均匀闭孔结构炭层,表明IFR对EP材料具有良好的膨胀阻燃效果。
Halogen-free flame retardant epoxy resin was prepared by intumescent flame retardant（IFR） composed of ammonium polyphosphate and the novel halogen-free phosphorous flame retardant 1,2,3-tri（5,5-methyl-1,3-dioxaphosphorinanyl- 2-oxy） benzene. Influence of IFR on behavior of flame resistance, carbonization and microstructure of EP composites were studied. It was found that when the IFR loading was only 30 wt% , the limited oxygen index value of EP retarded could reach 37.6 % . TG analysis revealed that the amount of char residue increased remarkably from 21.24 % without IFR to 43.08 % at 600℃. The results from SEM photos showed that puffy coking char layers were formed by lots of closed bubbles in EP specimen filled with IFR after burning. It was proposed that IFR had good flame retardant effect on EP resin.
出处
《塑料》
CAS
CSCD
北大核心
2009年第4期73-75,共3页
Plastics
基金
"十一五"国家科技支撑计划项目(2006BAK06B06)
