Abstract
A novel spectrum-fingerprint anti-counterfeiting fiber was developed by using Sr2ZnSi2O7:Eu2+,Dy3+ and polyacrylonitrile (PAN) as main raw materials by wet spinning. The microstructure, phase structure and spectral properties of the fiber were studied by SEM, XRD and Fluorescence spectrophotometer. The results show that the Sr2ZnSi2O7:Eu2+,Dy3+/PAN spectrum-fingerprint anti-counterfeiting fiber has similar luminescence characteristics to those of Sr2ZnSi2O7:Eu2+,Dy3+, the excitation wavelength of which is near 360 nm and the strongest emission peak is 470 nm. Although the addition amounts of luminescent material had no effect on the luminous wavelength of the fiber obviously, it had a great influence on the luminescence intensity of the fiber. Sr2ZnSi2O7:Eu2+,Dy3+/PAN composite fiber keeps the basic characteristics of spectrum-fingerprint anti-counterfeiting fiber and is a new potential anti-counterfeiting fiber with higher anti-counterfeiting force.