盐酸掺杂聚苯胺薄膜的隐身性能

Abstract

Polyaniline(emeraldine base,EB) powder was dissolved in n-methylpyrrolidone(NMP).Then the NMP solution of EB was cast on glass substrate and dried under a vacuum to obtain the EB film.The EB film was doped by exposing them in the atmosphere of hydrogen chloride volatilized by hydrochloric acid.The doped degree was controlled by the concentration of hydrochloric acid solution and different time that the film was exposed in HCl gas.The results show that,in the beginning,the infrared reflectivity of the film in the atmospheric window increases with the doped degree increases.Then the infrared reflectivity begins to decrease after the doped degree come to a certain degree.At last,the value of infrared reflectivity keep steady.The highest reflectivity in the wave range of 3～5 μm is 53.1%,and the highest reflectivity in the wave range of 8～14 μm is 57.6%.The doped degree when the highest reflectivity appears in different wave range is diffe-rent.The interference comes from the thickness of the film also influences the reflectivity in some narrow wave range.Due to the simpleness of the doped method,it is easy to realize the camouflage with thermal colors.The microwave absorption property of the EB film with different doped degree was also investigated.In general,all EB films with different doped degree show the excellent transmittance.In some wave range,the EB film with proper doped degree can also absorb the microwave.It can be used as a part of stealthy composite material to cover the targets on the ground.