Evaluation of surface treatment on Li2Mg3SnO6 ceramic powders and the application of Li2Mg3SnO6 powders filled polytetrafluoroethylene composites

被引：18
作者：
Luo, Fuchuan [1 ,2 ]
Tang, Bin [1 ,2 ]
Yuan, Ying [1 ,2 ,3 ]
Fang, Zixuan [1 ,2 ]
Zhang, Shuren [1 ,2 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Engn Ctr Electromagnet Radiat Control Mat, Jianshe Rd, Chengdu 610054, Sichuan, Peoples R China
[2] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Jianshe Rd, Chengdu 610054, Sichuan, Peoples R China
[3] Univ Elect Sci & Technol China, Inst Elect & Informat Engn, Chengdu, Sichuan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2018年 / 456卷
基金：
中国国家自然科学基金;
关键词：
Li2Mg3SnO6; Polytetrafluoroethylene; Composites; Dielectric properties; MICROWAVE DIELECTRIC-PROPERTIES; COUPLING AGENT; SILANE; PERMITTIVITY; CONSTANT;
D O I：
10.1016/j.apsusc.2018.06.204
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, we studied the properties of polytetrafluoroethylene (PTFE) based and Li2Mg3SnO6 (LMS) filled composites. The LMS powders were synthesized by one synthetic process and modified by C14H19F13O3Si(F8261). The content of modified LMS changed from 26 to 66 wt%. XRD and TEM were employed to investigate the crystal phase of obtained LMS. The analysis of XPS and Contact Angle were conducted to study the surface characteristics of F8261 modified LMS. The morphology, microstructure, dielectric properties of PTFE based composites filled with untreated LMS and modified LMS were investigated in detail. Further, various theoretical models were put forward to discuss the dielectric constant of the composites. At last, the modified LMS filled PTFE composites exhibited reliable dielectric constant (epsilon(r) = 3.61), acceptable dielectric loss (tan delta = 0.002), stable frequency dependence of dielectric constant and low temperature coefficient of dielectric constant (tau(epsilon) = 9.42 ppm/degrees C) at filler loading of 46 wt% LMS.
引用
收藏
页码：637 / 644
页数：8
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