摘要
采用溶胶-凝胶法制备CaCu_3Ti_4O_(12)(CCTO)前驱粉体,然后与聚偏氟乙烯(PVDF)进行复合,制备了CCTO/PVDF复合材料。研究了在不同煅烧温度和不同含量CCTO前驱粉体条件下CCTO/PVDF复合材料的介电性能与微观结构。结果表明:CCTO前驱粉体的晶粒尺寸随着煅烧温度的升高而逐渐增大,并且在各个煅烧温度下CCTO前驱粉体的粒径分布较宽。随着煅烧温度的升高,CCTO/PVDF复合材料的介电常数减小。CCTO/PVDF复合材料的介质损耗也随煅烧温度的升高呈现下降趋势,这可能是由前驱粉体自身的损耗造成的。CCTO/PVDF复合材料的介电常数和介质损耗均随CCTO前驱粉体含量的增加而增大。
A CaCu3Ti4O12(CCTO) precursor powder was prepared by sol-gel method, and then a CCTO/PVDF composite was prepared using CCTO to compound with polyvinylidene fluoride(PVDF). The dielectric properties and microstructure of the CCTO/PVDF composites were studied under different calcination temperature and different contents of CCTO precursor powder. The results show that the grain size of CCTO precursor powder increases gradually with the increase of calcination temperature, and the particle size distribution of CCTO precursor powder is wide at each calcination temperature. With the increase of calcination temperature, the dielectric constant of CCTO/PVDF composites decreases. The dielectric loss of the CCTO/PVDF composites also decreases with the increase of temperature, which may be caused by the loss of precursor powder. With the increase of CCTO precursor powder content, both the dielectric constant and dielectric loss of the CCTO/PVDF composites increase.
作者
王行行
蔡会武
彭建东
周文英
刘圣楠
刘标
WANG Hanghang;CAI Huiwu;PENG JiANDong;ZHOU Wenying;LIU Shengnan;LIU Biao(College of Chemistry and Chemical Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)
出处
《绝缘材料》
CAS
北大核心
2019年第3期18-24,共7页
Insulating Materials
基金
国家自然科学基金资助项目(51577154)
陕西省自然科学基础研究计划项目(2016JM5014)
