1. Synergistic Enhanced Thermal Conductivity and Dielectric Constant of Epoxy Composites with Mesoporous Silica Coated Carbon Nanotube and Boron Nitride Nanosheet.
- Author
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Hao, Yutao, Li, Qihan, Pang, Xianhai, Gong, Bohong, Wei, Chengmei, and Ren, Junwen
- Subjects
MESOPOROUS silica ,PERMITTIVITY ,THERMAL conductivity ,DIELECTRIC materials ,MULTIWALLED carbon nanotubes ,BORON nitride ,CARBON nanotubes - Abstract
Dielectric materials with high thermal conductivity and outstanding dielectric properties are highly desirable for advanced electronics. However, simultaneous integration of those superior properties for a material remains a daunting challenge. Here, a multifunctional epoxy composite is fulfilled by incorporation of boron nitride nanosheets (BNNSs) and mesoporous silica coated multi-walled carbon nanotubes (MWCNTs@mSiO
2 ). Owing to the effective establishment of continuous thermal conductive network, the obtained BNNSs/MWCNTs@mSiO2 /epoxy composite exhibits a high thermal conductivity of 0.68 W m−1 K−1 , which is 187% higher than that of epoxy matrix. In addition, the introducing of mesoporous silica dielectric layer can screen charge movement to shut off leakage current between MWCNTs, which imparts BNNSs/MWCNTs@mSiO2 /epoxy composite with high dielectric constant (8.10) and low dielectric loss (<0.01) simultaneously. It is believed that the BNNSs/MWCNTs@mSiO2 /epoxy composites with admirable features have potential applications in modern electronics. [ABSTRACT FROM AUTHOR]- Published
- 2021
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