Intelligent phase transition of polyimide-based composite foam for dynamic radar/infrared stealthOA
Intelligent radar/infrared stealth materials exhibit the capacity to dynamically modulate their radar/infrared stealth performance under different environmental backgrounds,which is of critical importance in military applications.In this paper,a dynamically modulated radar/infrared stealth composite is integrated by combining polyimide(PI)foam in its bottom,PI foam/carbon nanotube(CNT)/anisotropic iron(Fe)/vanadium dioxide(VO_(2))in its middle,and VO_(2)coating on its top.The unique phase transition characteristic of VO_(2)effectively promotes significant changes in the conductivity,emissivity,and electromagnetic parameters of the composite foam,thereby motivating the intelligent regulation of radar/infrared stealth performance.Consequently,the radar stealth performance of composite foam can be switched between-4.17 dB at 30℃ and-61.69 dB at 120℃ at a thickness of 2.36 mm.Moreover,the bottom-designed polyimide thermal barrier layer can effectively block thermal radiation,thereby contributing to reducing surface temperatures.Simultaneously,VO_(2)coating on the surface exhibits lower infrared emissivity after phase transition.The synergistic effect of reduced surface temperature and infrared emissivity contributes to the realization of intelligent infrared stealth.The present work proposes a promising strategy for designing actively adjustable stealth materials to cope with multi-band military detection in complex operational scenarios.
Shuangshuang Li;Wei Li;Xinwei Tang;Kaixin Lai;Wei Hong;Zhihao Jia;Suya Yu;Jiajia Huang;Yi Hu;Zicheng Wang;Tianxi Liu
School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China School of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,ChinaSchool of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,ChinaSchool of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,ChinaSchool of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,ChinaSchool of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,ChinaSchool of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,ChinaXi''an ASN Technology Group Co.,Ltd.,Xi''an 710065,ChinaSchool of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,ChinaSchool of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,China
化学化工
polyimidefoamvanadium dioxideradar stealthinfrared stealth
《Nano Research》 2026 (3)
P.942-952,11
support from the Henan Provincial Engineering Research Center for Biomedical Materials in Respiratory Diseases Open Research Projects(No.SWCLGCJS KF02)the National Natural Science Foundation of China(No.52373077)China Postdoctoral Science Foundation(No.2024M760348).
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