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Optically transparent and thermally conductive composite films of α-alumina and highly refractive polyimide.
- Source :
-
Polymer Bulletin . Sep2023, Vol. 80 Issue 9, p9479-9488. 10p. - Publication Year :
- 2023
-
Abstract
- Optically transparent and thermally conductive polymer composites are required for next-generation opto-electronic devices. The present work aimed at creating polymer composite films with enough optical transparency and superior normal-to-plane thermal conductivity. We successfully prepared composite films with transmittances more than 80% (at a wavelength of 600 nm) and thermal conductivity more than 0.7 Wm−1 K−1. For the polymeric matrix, we employed a highly refractive polyimide. α-alumina particles distributed in the polyimide matrix enhanced the normal-to-plane thermal conductivity of the composite films significantly. Similar refractive indices of the matrix polyimide and α-alumina particles suppressed light scattering in the polymer composites. The clever choice of the constituent materials conquered a trade-off between optical transparency and thermal conductivity in polymer composites. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01700839
- Volume :
- 80
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Polymer Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 168595066
- Full Text :
- https://doi.org/10.1007/s00289-022-04528-0