典型文献
Dry-spun Polyimide Fibers with Excellent Thermal Stability,Intrinsic Flame Retardancy and Ultralow Smoke Release
文献摘要：
Polymer fiber with an ultrahigh thermal stability,superior flame retardancy and low smoke release during combustion is urgently needed and a crucial challenge for developing advanced fireproof textiles.In this study,a series of high-performance polyimide fibers are synthesized by copolymerizing 4,4'-diaminodiphenylmethane(MDA)into the pyromellitic dianhydride-p-phenylenediamine(PMDA-PDA)backbone for synergistically solving the technical challenge of poor fiber processing ability of these polyimides with a high inherent molecular rigidity.The glass transition temperature(Tg)of resultant fibers with the PDA molar ratio over 50 mol％reaches above 420℃and their 10 wt％weight loss temperature(T10％)is within 543-633℃.For the typical fiber containing 80 mol％of PDA,the limiting oxygen index(LOI)reaches 39％and exhibits a rapid self-extinguishing performance after deviating from the flame.Meanwhile,this fiber exhibits the minimum heat release rate of 14.1 kW/m2 in a long ignition time of 813 s during combustion,revealing its better flame retardancy than the well-known Nomex fiber with a heat release rate of 140.6 kW/m2 during the 120 s ignition.Meanwhile,the total smoke production of this poly imide fiber is only 1/9 of the Nomex fiber.Accordingly,the excellent flame retardancy of polyimide fibers indicating them more attractive as the fireproof materials in the field of emergency protection.
文献关键词：
中图分类号：
作者姓名：
Han Dong;Yu-Ping Wang;Xiu-Ting Li;Xin Zhao;Jie Dong;Qing-Hua Zhang
作者机构：
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China;Jiangsu New Vision Advanced Functional Fiber Innovation Center Co.,Ltd.,Suzhou 215000,China
文献出处：
引用格式：
[1]Han Dong;Yu-Ping Wang;Xiu-Ting Li;Xin Zhao;Jie Dong;Qing-Hua Zhang-.Dry-spun Polyimide Fibers with Excellent Thermal Stability,Intrinsic Flame Retardancy and Ultralow Smoke Release)[J].高分子科学（英文版）,2022(11):1422-1431
A类：
Retardancy,pyromellitic,polyimides,deviating
B类：
Dry,spun,Polyimide,Fibers,Excellent,Thermal,Stability,Intrinsic,Flame,Ultralow,Smoke,Release,Polymer,ultrahigh,thermal,stability,superior,flame,retardancy,smoke,release,during,combustion,urgently,needed,crucial,challenge,developing,advanced,fireproof,textiles,this,study,series,performance,fibers,are,synthesized,by,copolymerizing,diaminodiphenylmethane,into,dianhydride,phenylenediamine,PMDA,PDA,backbone,synergistically,solving,technical,poor,processing,these,inherent,molecular,rigidity,glass,transition,temperature,Tg,resultant,molar,ratio,over,reaches,above,their,wt,weight,loss,T10,within,For,typical,containing,limiting,oxygen,LOI,exhibits,rapid,self,extinguishing,after,from,Meanwhile,minimum,heat,rate,kW,long,ignition,revealing,better,well,known,Nomex,total,production,only,Accordingly,excellent,indicating,them,more,attractive,materials,field,emergency,protection
AB值：
0.592694
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