摘要
合成新型树状单分子磷-溴阻燃剂1,3,5-三(5,5-二溴甲基-1,3-二氧杂己内磷酰氧基)苯(FR),制备阻燃环氧树脂(EP)复合材料,利用极限氧指数(LOI)、垂直燃烧(UL-94)、锥形量热(CONE)等方法研究FR对环氧树脂的阻燃性能及燃烧特性的影响。结果表明:当FR添加量为30%时,阻燃EP的LOI达到29.4%,垂直燃烧通过V-0级,其av-HRR,av-EHC,av-SEA及av-MLR较未阻燃EP分别降低87.5%、92.8%、90.8%和58.5%,呈现出良好地阻燃效果和抑烟性能;扫描电子显微镜(SEM)观测发现:阻燃EP燃烧后形成了均匀闭孔炭层。
Epoxy resin was flame retarded with the novel arborescent P-Br flame retardant 1,3,5-tri（5,5-dibromomethyl- 1,3 ,-dioxaphosphorinanyl-2-oxy）benzene. The effect of FR content on flame retarding properties such as limited oxygen index （LOI） and UL-94 was studied. The results demonstrated that the FR was effective on the flame retardancy of epoxy resin when the content of the fire retardant was 30 %. It was also found that the EP retarded by FR could still pass UL94 V-O rating,and its limited oxygen index value could reach 29.4 %. The cone experimental results showed that the av-HRR, av-EHC, av-SEA and av-MLR of the EP retarded lowed 87.5 % ,92.8 % ,90.8 % and 58.5 % respectively than those of pure EP. In addition, SEM observation revealed that the continuous,intact,strong and closed charred layers were formed in EP specimen filled with FR after burning.
出处
《塑料》
CAS
CSCD
北大核心
2010年第5期21-23,27,共4页
Plastics
基金
"十一五"国家科技支撑计划项目(2006BAK06B06)
