We adopted a green,economical and simple method in which konjac glucomannan (KGM) was used as a carrier to support CNTs to construct a three-dimensional structure filled with epoxy resin to improve the absorbing perfo...We adopted a green,economical and simple method in which konjac glucomannan (KGM) was used as a carrier to support CNTs to construct a three-dimensional structure filled with epoxy resin to improve the absorbing performance of epoxy resin.Through the reflection of the internal multi-level pore structure and the dielectric loss effect of CNTs,the dissipation and absorption of electromagnetic waves are realized.This KGM derived CNTs foam exhibits high specific microwave absorption performance with a minimum absorption of-25.2 dB at 11.3 GHz and a qualified bandwidth of around 2.89 GHz (RL≤-10 dB),which is achieved by KDCF5/Epoxy with the coating layer thickness of 1.8 mm.We provide a novel and cost-effective method to achieve excellent absorbing performance under thin thickness and low load.The CNTs foam also has a lower density (6.5 mg/cm^(3)) and can improve the absorbing properties of the epoxy while maintaining its various advantages,thereby expanding the application range of the epoxy resin.展开更多
文摘We adopted a green,economical and simple method in which konjac glucomannan (KGM) was used as a carrier to support CNTs to construct a three-dimensional structure filled with epoxy resin to improve the absorbing performance of epoxy resin.Through the reflection of the internal multi-level pore structure and the dielectric loss effect of CNTs,the dissipation and absorption of electromagnetic waves are realized.This KGM derived CNTs foam exhibits high specific microwave absorption performance with a minimum absorption of-25.2 dB at 11.3 GHz and a qualified bandwidth of around 2.89 GHz (RL≤-10 dB),which is achieved by KDCF5/Epoxy with the coating layer thickness of 1.8 mm.We provide a novel and cost-effective method to achieve excellent absorbing performance under thin thickness and low load.The CNTs foam also has a lower density (6.5 mg/cm^(3)) and can improve the absorbing properties of the epoxy while maintaining its various advantages,thereby expanding the application range of the epoxy resin.
