Smart fire alarm sensor(FAS)materials with mechanically robust,excellent flame retardancy as well as ultra-sensitive temperature-responsive capabil-ity are highly attractive platforms for fire safety applica-tion.However,most reported FAS materials can hardly provide sensitive,continuous and reliable alarm signal output due to their undesirable temperature-responsive,flame-resistant and mechanical performances.To over-come these hurdles,herein,we utilize the multi-amino molecule,named HCPA,that can serve as triple-roles including cross-linker,fire retardant and reducing agent for decorating graphene oxide(GO)sheets and obtain-ing the GO/HCPA hybrid networks.Benefiting from the formation of multi-interactions in hybrid network,the optimized GO/HCPA network exhibits significant increment in mechanical strength,e.g.,tensile strength and toughness increase of～2.3 and～5.7 times,respectively,compared to the control one.More importantly,based on P and N doping and promoting thermal reduction effect on GO network,the excellent flame retardancy(withstanding～1200℃flame attack),ultra-fast fire alarm response time(～0.6 s)and ultra-long alarming period(＞600 s)are obtained,representing the best comprehensive performance of GO-based FAS counterparts.Furthermore,based on GO/HCPA network,the fireproof coating is constructed and applied in polymer foam and exhibited exceptional fire shielding performance.This work provides a new idea for designing and fabricating desirable FAS materials and fireproof coatings.

Cheng-Fei Cao;Bin Yu;Zuan-Yu Chen;Yong-Xiang Qu;Yu-Tong Li;Yong-Qian Shi;Zhe-Wen Ma;Feng-Na Sun;Qing-Hua Pan;Long-Cheng Tang;Pingan Song;Hao Wang

Centre for Future Materials,University of Southern Queensland,Springfield Central 4300,Australia;State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,China;College of Material,Chemistry and Chemical Engineering,Key Laboratory of Organosilicon Chemistry and Material Technology of MoE,Hangzhou Normal University,Hangzhou 311121,China;College of Environment and Resources,Fuzhou University,Fuzhou 350116,China;School of Engineering,Zhejiang A&F University,Hangzhou 311300,China

纳微快报（英文）

[1]Cheng-Fei Cao;Bin Yu;Zuan-Yu Chen;Yong-Xiang Qu;Yu-Tong Li;Yong-Qian Shi;Zhe-Wen Ma;Feng-Na Sun;Qing-Hua Pan;Long-Cheng Tang;Pingan Song;Hao Wang-.Fire Intumescent,High-Temperature Resistant,Mechanically Flexible Graphene Oxide Network for Exceptional Fire Shielding and Ultra-Fast Fire Warning)[J].纳微快报（英文）,2022(06):81-98

Intumescent,HCPA

Fire,High,Temperature,Resistant,Mechanically,Flexible,Graphene,Oxide,Network,Exceptional,Shielding,Ultra,Fast,Warning,Smart,sensor,FAS,materials,mechanically,robust,excellent,flame,retardancy,well,ultra,sensitive,temperature,responsive,capabil,ity,highly,attractive,platforms,safety,applica,However,most,reported,hardly,continuous,reliable,signal,output,due,their,undesirable,resistant,performances,To,over,come,these,hurdles,herein,utilize,multi,amino,molecule,named,that,serve,triple,roles,including,cross,linker,retardant,reducing,agent,decorating,graphene,oxide,sheets,hybrid,networks,Benefiting,from,formation,interactions,optimized,exhibits,significant,increment,strength,tensile,toughness,increase,times,respectively,compared,control,one,More,importantly,doping,promoting,thermal,reduction,effect,withstanding,attack,fast,response,long,alarming,period,obtained,representing,best,comprehensive,counterparts,Furthermore,fireproof,constructed,applied,polymer,foam,exhibited,exceptional,shielding,This,provides,new,idea,designing,fabricating,coatings

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