An Engineered Heterostructured Trinity Enables Fire‑Safe,Thermally Conductive Polymer Nanocomposite Films with Low Dielectric Loss  

作　　者：Qiang Chen Jiabing Feng Yijiao Xue Siqi Huo Toan Dinh Hang Xu Yongqian Shi Jiefeng Gao Long‑Cheng Tang Guobo Huang Weiwei Lei Pingan Song 

机构地区：[1]Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes,Ministry of Education,College of Environment,Hohai University,Nanjing 210098,People’s Republic of China [2]Suzhou Research Institute,Hohai University,Suzhou 215100,People’s Republic of China [3]College of Biological,Chemical Sciences and Engineering,Jiaxing University,Jiaxing 314001,People’s Republic of China [4]Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry(CAF),Nanjing 210042,People’s Republic of China [5]Centre for Future Materials,School of Engineering,University of Southern Queensland,Springfield 4300,Australia [6]College of Environment and Safety Engineering,Fuzhou University,Fuzhou 350116,People’s Republic of China [7]School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002,People’s Republic of China [8]Key Laboratory of Organosilicon Chemistry and Material Technology of MoE,College of Material,Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 311121,People’s Republic of China [9]School of Pharmaceutical and Chemical Engineering,Taizhou University,Jiaojiang 318000,People’s Republic of China [10]School of Science,RMIT University,Melbourne,VIC 3000,Australia [11]Centre for Future Materials,School of Agriculture and Environmental Science,University of Southern Queensland,Springfield 4300,Australia

出　　处：《Nano-Micro Letters》2025年第7期323-341,共19页纳微快报(英文版)

基　　金：financially supported by the Postdoctoral Fellowship Program of CPSF(Grant No.GZC20240372);China Postdoctoral Science Foundation(Grant No.2024M750728);Jiangsu Funding Program for Excellent Postdoctoral Talent(Grant No.2024ZB514);National Natural Science Foundation of China(Nos.21975185 and 51978239);Natural Science Foundation of Jiangsu Province(No.BK20220989);National Key R&D Program of China(Nos.2022YFC3203702 and 2023YFC3208900);the Australian Research Council(Nos.LP220100278,DP240102628 and DP240102728).

摘　　要：To adapt to the trend of increasing miniaturization and high integration of microelectronic equipments,there is a high demand for multifunctional thermally conductive(TC)polymeric films combining excellent flame retardancy and low dielectric constant(ε).To date,there have been few successes that achieve such a performance portfolio in polymer films due to their different and even mutually exclusive governing mechanisms.Herein,we propose a trinity strategy for creating a rationally engineered heterostructure nanoadditive(FG@CuP@ZTC)by in situ self-assembly immobilization of copper-phenyl phosphonate(CuP)and zinc-3,5-diamino-1,2,4-triazole complex(ZTC)onto the fluorinated graphene(FG)surface.Benefiting from the synergistic effects of FG,CuP,and ZTC and the bionic lay-by-lay(LBL)strategy,the as-fabricated waterborne polyurethane(WPU)nanocomposite film with 30 wt%FG@CuP@ZTC exhibits a 55.6%improvement in limiting oxygen index(LOI),66.0%and 40.5%reductions in peak heat release rate and total heat release,respectively,and 93.3%increase in tensile strength relative to pure WPU film due to the synergistic effects between FG,CuP,and ZTC.Moreover,the WPU nanocomposite film presents a high thermal conductivity(λ)of 12.7 W m^(−1) K^(−1) and a lowεof 2.92 at 106 Hz.This work provides a commercially viable rational design strategy to develop high-performance multifunctional polymer nanocomposite films,which hold great potential as advanced polymeric thermal dissipators for high-power-density microelectronics.

关 键 词：Bionic strategy Fluorinated graphene Flame retardancy Thermal conductivity Dielectric constant 

分 类 号：TB332[一般工业技术—材料科学与工程]