Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO 2 nanoparticle fillers

Yongcun Zhou; Lu Wang; Hu Zhang; Yuanyuan Bai; Yujuan Niu; Hong Wang

doi:10.1063/1.4733324

Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO ₂ nanoparticle fillers

Yongcun Zhou
, Lu Wang
, Hu Zhang
, Yuanyuan Bai
, Yujuan Niu
, Hong Wang

School of Aerospace Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

91 Scopus citations

Abstract

A kind of polymer based composites was prepared by embedding the fillers of core-shell Ag@SiO ₂ nanoparticles into the polyimide (PI) matrix. The obtained Ag@SiO ₂/PI (50% vf of fillers) composites show remarkably improved high thermal conductivity and low relative permittivity. The maximum value of the thermal conductivity of composites is 7.88 W/(mK) and the relative permittivity and dielectric loss are about 11.7 and 0.015 at 1 MHz, respectively. Compared with self-passivated nanometer Al particles composites, core-shell Ag@SiO ₂ nano-composite is beneficial to increase the thermal conductivity and reduce the permittivity of the composites. The relative mechanism was studied and discussed.

Original language	English
Article number	012903
Journal	Applied Physics Letters
Volume	101
Issue number	1
DOIs	https://doi.org/10.1063/1.4733324
State	Published - 2 Jul 2012

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title = "Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO 2 nanoparticle fillers",

abstract = "A kind of polymer based composites was prepared by embedding the fillers of core-shell Ag@SiO 2 nanoparticles into the polyimide (PI) matrix. The obtained Ag@SiO 2/PI (50\% vf of fillers) composites show remarkably improved high thermal conductivity and low relative permittivity. The maximum value of the thermal conductivity of composites is 7.88 W/(mK) and the relative permittivity and dielectric loss are about 11.7 and 0.015 at 1 MHz, respectively. Compared with self-passivated nanometer Al particles composites, core-shell Ag@SiO 2 nano-composite is beneficial to increase the thermal conductivity and reduce the permittivity of the composites. The relative mechanism was studied and discussed.",

author = "Yongcun Zhou and Lu Wang and Hu Zhang and Yuanyuan Bai and Yujuan Niu and Hong Wang",

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T1 - Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO 2 nanoparticle fillers

AU - Zhou, Yongcun

AU - Wang, Lu

AU - Zhang, Hu

AU - Bai, Yuanyuan

AU - Niu, Yujuan

AU - Wang, Hong

PY - 2012/7/2

Y1 - 2012/7/2

N2 - A kind of polymer based composites was prepared by embedding the fillers of core-shell Ag@SiO 2 nanoparticles into the polyimide (PI) matrix. The obtained Ag@SiO 2/PI (50% vf of fillers) composites show remarkably improved high thermal conductivity and low relative permittivity. The maximum value of the thermal conductivity of composites is 7.88 W/(mK) and the relative permittivity and dielectric loss are about 11.7 and 0.015 at 1 MHz, respectively. Compared with self-passivated nanometer Al particles composites, core-shell Ag@SiO 2 nano-composite is beneficial to increase the thermal conductivity and reduce the permittivity of the composites. The relative mechanism was studied and discussed.

AB - A kind of polymer based composites was prepared by embedding the fillers of core-shell Ag@SiO 2 nanoparticles into the polyimide (PI) matrix. The obtained Ag@SiO 2/PI (50% vf of fillers) composites show remarkably improved high thermal conductivity and low relative permittivity. The maximum value of the thermal conductivity of composites is 7.88 W/(mK) and the relative permittivity and dielectric loss are about 11.7 and 0.015 at 1 MHz, respectively. Compared with self-passivated nanometer Al particles composites, core-shell Ag@SiO 2 nano-composite is beneficial to increase the thermal conductivity and reduce the permittivity of the composites. The relative mechanism was studied and discussed.

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DO - 10.1063/1.4733324

M3 - 文章

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SN - 0003-6951

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO ₂ nanoparticle fillers

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