摘要
以聚乙烯基硅氮烷(PVSZ)为原料,氧化石墨烯(GO)为碳源,无水乙醇(ETOH)为分散剂,制备石墨烯球增强SiCNO陶瓷(SiCNO-GO)。利用拉曼光谱(Raman)、电子自旋共振(EPR)和扫描电子显微镜(SEM)等表征手段,研究SiCNO-GO陶瓷结构对其介电性能的影响。结果表明:SiCNO-GO陶瓷的微球密度和粒径的大小与GO的含量有关;随着SiCNO-GO陶瓷中GO含量的增加,SiCNO-GO陶瓷的介电常数和介电损耗也随之增大,在GO含量为0.1%(质量分数)时达到最大值,而当GO质量分数为0.3%时,SiCNO-GO陶瓷的介电常数和介电损耗降低。
Graphene ball reinforced SiCNO ceramics (SiCNO-GO) were prepared by using polyvinylsi-lazane (PVSZ) as raw material and graphene oxide (GO) as carbon source and anhydrous ethanol (ETOH) as dispersant. X-ray diffraction (XRD), Raman spectroscopy (Raman), electron spin resonance (EPR) and SEM were used to study the effect of SiCNO-GO ceramics on the dielectric properties. The results show that the microsphere density and particle size of SiCNO-GO ceramics are related to the content of GO. With the increase of GO content in SiCNO-GO ceramics, the dielectric constant and dielectric loss of SiCNO-GO ceramics also increase, reach the maximum value when the GO mass fraction is 0.1%. When the GO mass fraction is 0.3%, the dielectric constant and dielectric loss of the SiCNO-GO ceramics decrease.
作者
余煜玺
夏范森
黄奇凡
YU Yu-xi;XIA Fan-sen;HUANG Qi-fan(Fujian Key Laboratory of Advanced Materials,Department ofMaterials Science and Engineering,College of Materials,Xiamen University,Xiamen 361005,Fujian,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2019年第3期8-14,共7页
Journal of Materials Engineering
基金
国家自然科学基金项目(51675452)
装备预研基金项目(6140923020301)
反应堆燃料及材料重点实验室基金(6142A0604030817)
关键词
聚合物先驱体陶瓷
石墨烯
电学性能
制备
polymer derived ceramic(PDC)
graphene
dielectrical performance
preparation
