Thermal conductivity and dielectric properties of PEDOT:PSS-AlN filler reinforced water-soluble polymer composites
| Autor: | Hsing I. Hsiang, Tzu Sheng Huang, Yu Kai Han, Pei Chen Huang, Chang Ting Yang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Scanning electron microscope Process Chemistry and Technology 02 engineering and technology Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Thermogravimetry Thermal conductivity PEDOT:PSS Materials Chemistry Ceramics and Composites Surface modification Thermal stability Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 43:S710-S716 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2017.05.271 |
| Popis: | Poly(3,4-ethylenedioxythiophene):poly-(styrenesulfonic) (PEDOT:PSS) surface modification of aluminum nitride (AlN) fillers and the effects on thermal conductivity and dielectric properties of polyurethane (PU) based composites are investigated in this study. The compositions, microstructure, thermal stability, thermal conductivity, dielectric properties and volume resistivity of the PU based composites were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetry (TGA), optical thermal analyzer (OTA), impedance analyzer (IA), respectively. It was observed that the thermal conductivity and thermal stability of the PU composites increased with increasing AlN content. After proper processing, the AlN particles could form a continuous dispersion, which would form a thermally conductive pathway within the polymer matrix. By adding 0–50 wt% AlN particles, the PU composites thermal conductivity was increased from 0.209 to 0.476 W/m-K. Furthermore, the thermal conductivity can be promoted to 0.764 W/m-K using PEDOT:PSS surface modification. The dielectric properties of the composites can also be adjusted by PEDOT:PSS surface modification. The dielectric constant of the PU based composites was increased from 7.58 to 400 at 10 kHz by adding 0–3 wt% PEDOT:PSS, which can act as an attractive candidate material for packaging, dielectric and embedded capacitors. |
| Databáze: | OpenAIRE |
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