Preparation of PANI-coated hollow glass microsphere and its application in dual-band stealth coated fabric

摘要

The dual-band stealth fabric was prepared by the specific procedure,as stated below:firstly,doping the polyaniline-plated hollow glass microspheres(PANI/HGMs) with the ZnO nanoparticles;subsequently,coating the aforesaid obtained substance on the Ag-deposited cellulose fabric.PANI/HGMs were produced via the in-situ polymerization of the polyaniline(PANI).And besides,the Ag-deposited cellulose fabric was prepared by the magnetron sputtering system.The scanning electron microscopy(SEM) was used to characterize the surface morphology of the coated fabric.Intended for the evaluation of the stealth effect,the infrared thermal imaging instrument and electromagnetic stealth tester were employed.The micro-structure during the reaction of coated fabric was verified through Fourier transform infrared(FTIR) and x-ray diffraction(XRD).Not only the temperature difference between upper and lower surfaces but also the results of thermal gravimetric analysis(TGA) further express the thermal stability.The coated fabric shows favorable infrared(IR) stealth effect and excellent electromagnetic interference(EMI) stealth effect,under the synergy of PANI,Ag mirror structure and ZnO nanoparticles.In addition,the EMI effect of-50 dB can be realized at the band of 0-3 GHZ,that's because the PANI absorbs the microwaves and the silver reflects a large number of microwaves.