硅酸盐学报

聚丙烯/CaCO3:Eu3+复合材料的制备及性能

单位：1. 西南科技大学非金属与材料重点实验室四川绵阳 621010 2. 四川长虹电器股份有限公司四川绵阳 621000 3. 四川东材科技集团股份有限公司四川绵阳 621000

分类号：

出版年,卷(期):页码：2013,41(9):1301-1305

DOI：

摘要：

采用微波沉淀法合成了CaCO3:Eu3+(CEP)红色荧光粉，然后将硬脂酸改性后的CEP(c-CEP)添加到聚丙烯(polypropylene，PP)中制备了PP/CaCO3:Eu3+(PP/c-CEP)复合材料。通过荧光粉的光致发光光谱和激发光谱、扫描电子显微镜、差示扫描量热法研究了改性剂和荧光粉添加量对复合材料的结构、力学性能和发光性能的影响。结果表明：硬脂酸改性荧光粉(c-CEP)可均匀分布在PP中，且c-CEP的荧光强度强于CEP和PP/c-CEP复合材料；随着c-CEP添加量的增加，PP/c-CEP复合材料的发光强度增强，其发射主峰位于614 nm处，归属于Eu3+的5D0→7F2跃迁；与PP相比，PP/c-CEP复合材料的力学性能几乎没有发生变化，但结晶速率提高，熔点升高，结晶度降低。

Eu3+ doped CaCO3 phosphor (CEP) was prepared by a microwave method. The CEP coated with stearic acid (c-CEP) was added into polypropylene (PP). The structure and physicochemical properties of PP/c-CEP composites were characterized by photoluminescence and photoluminescence excitation spectroscopy, scanning electron microscopy and differential scanning calorimetry, respectively. The results demonstrate that c-CEP can be dispersed in the PP composites. Compared to PP/c-CEP and CEP, the luminescent intensity of c-CEP is stronger. The luminescent intensity of PP/c-CEP increases with the increase of c-CEP. The maximal emission peaks of CEP and PP/c-CEP appear at 614 nm, corresponding to the electric-dipole transition 5D0→7F2 of Eu3+ ion, and showing red under UV light. Moreover, the mechanical properties of PP/c-CEP composite unchanged. Compared to the pure PP, a faster crystallization rate, a higher melting point and a lower crystallization degree in the PP/c-CEP composite were detected.

基金项目：

国家国际科技合作项目(2011BAA041304)；西南科技大学研究生创新基金(12ycjj10)；西南科技大学博士基金(11zx7155)资助项目。

作者简介：

参考文献：

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