Y2O3:Eu超细粉体的制备及其在聚丙烯中的应用研究

The Preparation and Application of Y2O3:Eu Ultra-Fine Powder in Polypropylene

中国石油大学理学院

College of Science，China University of Petroleum，Beijing 102200，P.R. China

关键词: 微波辐射 , 超细粉体 , Y2O3 :Eu , 分散 , 聚丙烯

The Y2O3:Eu red-emitting nanophosphors were prepared by microwave-assisted sol-gel process. The heating mechanism for microwave irradiation was studied to rough observation FTIR spectra of precursor and sample. The results of XRD, TEM and PL indicate that the Y2O3:Eu powder annealed [KG*4]at 700 ℃ for 2 h [KG*4]has [KG*4]optimal [KG*4]comprehensive [KG*4]properties [KG*4]and 96.3% of particles was distributed in the range of 15~27 nm with better fluorescence intensity. The photoshop of SEM show that agglomeration size of Y2O3:Eu powder is smaller than 100 nm with scanty sphere distribution. Moreover, the nucleation, fluorescence, and dispersion of Y2O3:Eu ultra-fine powder in polymer materials was investigated. The results show that small amount of Y2O3:Eu ultra-fine powder in polypropylene can induces the crystallization into β- spherulitic structure, and small amount of that is beneficial for the dispersion of powder in polypropylene, but the fluorescence intensity is enhanced with the increase of additive.

10.3696/j.issn.1006-396X.2011.03.016