P-TPU的合成及其在无卤阻燃PS中的应用  

Synthesis of P-TPU and Its Application in Halogen-free Flameretarded Polystyrene

作　　者：闫莉[1] 苏桂仙[2] 

机构地区：[1]河北联合大学材料科学与工程学院河北省无机非金属材料重点实验室,河北唐山063009 [2]唐山师范学院化学系,河北唐山063000

出　　处：《塑料科技》2014年第10期68-71,共4页Plastics Science and Technology

基　　金：河北省自然科学基金(E2014209239);唐山市科技计划(12110215B)

摘　　要：采用10-(2,5-二羟基苯基)-10-氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO-HQ)与异佛尔酮二异氰酸酯(IPDI)为硬段,聚乙二醇(PEG)为软段,合成了含磷热塑性聚氨酯(P-TPU)。研究了P-TPU的引入对由苯氧基聚磷腈(SPB-100)、三聚氰胺(MA)、笼状磷酸酯(PEPA)复配阻燃的聚苯乙烯(PS)阻燃性能和力学性能的影响。结果表明:当添加5%的硬段含量为70%的P-TPU于PS/SPB-100/MA/PEPA(60/20/15/5)阻燃体系中时,体系的极限氧指数(LOI)可达到28.5%,冲击强度由添加前的0.42 kJ/m2提高至2.89 kJ/m2,拉伸强度则由添加前的16.22 MPa提高至21.75 MPa。A series of thermoplastic polyurethanes containing phosphorus（P-TPU） were synthesized by using 10-（2,5-dihydroxyphenyl）-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide（DOPOHQ）,3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate（IPDI） as hard segments,and polyethylene glycol（PEG） as soft segments,which were applied in polystyrene with the mixture of poly（bis（phenoxy）phosphazene）（SPB-100）,melamine（MA） and caged bicyclic phosphate（PEPA） as the flame retardant.And the effects of P-TPU content on flame retardancy and mechanical properties were studied.The results show that when 5% P-TPU with 70% hard segment is added,limit oxygen index（LOI） of the PS/SPB-100/MA/PEPA（60/20/15/5） flame-retarded system reaches 28.5%,the impact strength increases from 0.42 kJ/m2 to 2.89 kJ/m2,and the tensile strength increases from 16.22 MPa to 21.75 MPa.

关 键 词：阻燃 聚苯乙烯 热塑性聚氨酯 增韧 力学性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] TQ323.8