期刊
CERAMICS INTERNATIONAL
卷 41, 期 -, 页码 S492-S497出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.03.121
关键词
Nanocomposites; Dielectric properties; BaTiO3
资金
- Natural Science Foundation of China [51164026, 51462028]
- Key Project of Science and Technology for Higher Education of Inner Mongolia Autonomous Region [NJZZ14158]
- Natural Science Foundation of Inner Mongolia [2014MS0522]
- State Key Laboratory of New Ceramic and Fine Processing Tsinghua University [KF201308]
To achieve high-epsilon(r), low-tg sigma polymer composites, a multistep grafting route was designed to coat BaTiO3 (BT) nanoparticles with polymer PATP and then composite them with epoxy resin. FTIR and TGA were used to evaluate the chemical grafting of BT nanoparticles. TEM and SEM were utilized to characterize the morphology and microstructure of samples. The effects of surface modification and filler fraction on dielectric properties were investigated. The results show BT nanoparticles were successfully encapsulated with a PATP shell of 5-10 nm, which not only improves the dispersion of BT nanoparticles in epoxy resin, but also suppresses the dielectric loss of composites. The obtained composites have high dielectric constant and very low dielectric loss, which can be tailored by surface modification of nano-BT and varying the filler fraction. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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