典型文献
Surface decoration of Halloysite nanotubes with POSS for fire-safe thermoplastic polyurethane nanocomposites
文献摘要：
Halloysite nanotubes(HNTs)have been considered as a promising flame retardant fillers for polymers.In this work,the polyhedral oligomericsilsesquioxane(POSS)containing amino group was covalently grafted on the surface of HNTs with 3-(2,3-epoxypropoxy)propytrimethoxysilane as a chemical bridge.The POSS modified HNTs(HNTs-POSS)dispersed uniformly in the thermoplastic polyurethane(TPU)matrix and endowed TPU nanocomposites with enhanced tensile properties and fire safety.Cone calorimeter tests revealed that the introduction of 2 wt％HNTs-POSS to TPU matrix remarkably reduced the peak of heat release rate(PHRR)and total heat release(THR)by 60.0％and 18.3％,respectively.In addition,the peak CO production rate and total smoke release(TSR)could be significantly suppressed by the addition of HNTs-POSS.The well dispersed HNTs in combination with the ceramified silicon network from the thermal decomposition of POSS contributed to the formation of a continuous and compact char layer,exhibiting a tortuous effect by inhibiting heat diffusion and evaporation of volatile gaseous.In addition,the released crystal water from HNTs could dilute the combustible volatiles and then decline the combustion intensity.The tensile tests demonstrated that introduction of 2 wt％HNTs-POSS would enhance the maximum stress of TPU nanocomposite with a slight decrease of elongation at break.The combination of HNTs and POSS through the construction of effective interfacial interactions provides a feasible way to effectively enhance the fire safety of TPU nanocomposites without scarifying ductility.
文献关键词：
中图分类号：
作者姓名：
Wei Wu;Wanjing Zhao;Xianjing Gong;Qijun Sun;Xianwu Cao;Yujun Su;Bin Yu;Robert K.Y.Li;Roy A.L.Vellaisamy
作者机构：
Department of Materials Science and Engineering,City University of Hong Kong,Tat Chee Avenue,Kowloon,Hong Kong SAR,China;National Engineering Research Center of Novel Equipment for Polymer Processing,Key Laboratory of Polymer Processing Engineering of Ministry of Education,Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing,School of Mechani?al and Automotive Engineering,South China University of Technology,Guangzhou 510640,China;National-certified Enterprise Technology Center,Kingfa Science and Technology Co.Ltd.,Guangzhou 510663,China;Centre for Future Materials,University of Southern Queensland,Toowoomba,Queensland,Australia;James Watt School of Engineering,University of Glasgow,Glasgow G12 8QQ United Kingdom
文献出处：
引用格式：
[1]Wei Wu;Wanjing Zhao;Xianjing Gong;Qijun Sun;Xianwu Cao;Yujun Su;Bin Yu;Robert K.Y.Li;Roy A.L.Vellaisamy-.Surface decoration of Halloysite nanotubes with POSS for fire-safe thermoplastic polyurethane nanocomposites)[J].材料科学技术（英文版）,2022(06):107-117
A类：
Halloysite,oligomericsilsesquioxane,epoxypropoxy,propytrimethoxysilane,ceramified,scarifying
B类：
Surface,decoration,nanotubes,POSS,fire,thermoplastic,polyurethane,nanocomposites,HNTs,have,been,considered,promising,flame,retardant,fillers,polymers,In,this,polyhedral,containing,amino,group,was,covalently,grafted,surface,chemical,bridge,modified,dispersed,uniformly,TPU,matrix,endowed,enhanced,tensile,properties,safety,Cone,calorimeter,tests,revealed,that,introduction,wt,remarkably,reduced,peak,heat,PHRR,total,THR,by,respectively,addition,production,smoke,TSR,could,significantly,suppressed,well,combination,silicon,network,from,thermal,decomposition,contributed,formation,continuous,compact,char,layer,exhibiting,tortuous,inhibiting,diffusion,evaporation,gaseous,released,crystal,water,dilute,combustible,volatiles,then,decline,combustion,intensity,demonstrated,would,maximum,stress,slight,decrease,elongation,break,through,construction,interfacial,interactions,provides,feasible,way,effectively,without,ductility
AB值：
0.508326
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