PREPARATION AND PROPERTIES STUDY OF X-RAY SHIELDING Rare Earth / POLYPROPYLENE COMPOSITE FIBERS

Abstract:

Rare earth/PP shielding fibers filled with different contents of rare-earth have been prepared by melt spinning. The fibers are characterized by the Fourier-transformed infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), X-ray diffraction spectroscopy (XRD), scanning electron micrographs (SEM). Short fibers are compression-molded for the test of lead equivalent. The results show that, when the rare earth content is less than 50 wt%, rare earth can be dispersed in the PP matrix with nano-scale, and x-ray shielding performance of the fibers enhanced with the increase of content of rare-earth.