聚丙烯/CaCO_3:Eu^(3+)复合材料的制备及性能（英文）  

Preparation and Characterization of Polypropylene/CaCO_3:Eu^(3+) Composites

作　　者：董艳伟[1] 王浩[1] 王文生[2] 梁倩倩[3] 陈超[1] 孙蓉[1] 康明[1] 

机构地区：[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

出　　处：《硅酸盐学报》2013年第9期1301-1305,共5页Journal of The Chinese Ceramic Society

基　　金：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

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614nm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 photo-luminescence 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 lumi-nescent 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.

关 键 词：掺铕碳酸钙 荧光粉 荧光 硬脂酸 聚丙烯 聚丙烯 硬脂酸改性碳酸钙复合材料 

分 类 号：TQ133.3[化学工程—无机化工] TQ325.14