防X射线稀土/聚丙烯复合纤维的制备及性能研究

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

摘要:

通过密炼机将纳米稀土和聚丙烯共混,然后对共混物进行熔融纺丝,采用红外、差示扫描量热、X射线衍射、扫描电子显微镜测试等手段对所得纤维进行结构性能表征,并将短纤维层压作防辐射测试。实验结果表明,氧化镧含量小于50%时,其在聚丙烯基体中呈纳米级分散；随着氧化镧加入量的增加,铅当量也相应增加,稀土/聚丙烯复合防护纤维具有较好的X射线防护功能。

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.