[Investigation on multiband attenuation compatibility of carbon nanotubes]

The present investigation was focused on how to realize the attenuating compatibility of the electromagnetic defilade material in UV-Vis-Infrared band. Optical spectra of CNTs was investigated on the basis of analytical technologies such as Fourier transform infrared spectroscopy, UV-Vis spectrophotometer, laser scattering, and electron microscopy. It was demonstrated that the multi-band attenuation characteristic of CNTs is effectively associated with additives, concentrations and configurations. The measured sample with a concentration of 0.04 g x L(-1), in which the radius of CNTs was 30-50 nm, bore the maximum value of the extinction coefficient of 7.825 m2 x g(-1) at the point of 265 nm. Meanwhile, this kind of CNTs presents outstanding unified attenuation properties in infrared wave band when the thickness of the CNTs film is 0.1 mm and the total mass of CNTs is 0.349 mg in optical path. Especially, the unified attenuation goes beyond 90% in 4.0-6.25 and 7.0-16.7 microm.