【摘要】 采用硅烷偶联剂对稀土发光材料进行表面改性。将苯乙烯、改性后的稀土发光材料和引发剂偶氮二异丁腈加入到聚合反应装置中,进行原位乳液聚合,制备聚苯乙烯(PS)/稀土复合发光材料。红外光谱、热失重和显微镜分析表明,PS已经成功接枝到稀土发光材料表面,并以片状均匀地包覆于稀土发光材料表面。通过测试PS/稀土复合发光材料的表面接触角,发现PS/稀土复合发光材料有着优异的耐水性能。荧光光谱分析表明,乳液聚合过程中PS/稀土复合发光材料没有改变稀土发光材料的基质,PS/稀土复合发光材料的发光中心与稀土发光材料的相同。更多还原

【Abstract】 Rare earth luminescent material was modified with silane coupling agent,which was further encapsulated with a layer of polystyrene(PS) through in-situ emulsion polymerization.FTIR,TG and microscopy showed that PS uniformly grafts on the surface of rare earth luminescence materials in the form of lamella.Analysis of contact angle showed that PS/rare earth composite luminescence materials required an excellent resistance to water.Such PS coated rare earth composite luminescence materials maintained good fluorescence performance and their original luminescence centers.更多还原