Enhancing thermal conductivity of bulk polyethylene along two directions by paved crosswise laminate
arXiv:1605.01540 · doi:10.1088/0256-307X/38/1/014401
Abstract
Recently, some reports show that the ultra-low thermal conductivity of bulk polymers can be enhanced along one direction, which limits its applications. Here, we proposed paved crosswise laminate methods which can enhance the thermal conductivity of bulk polyethylene (PE) along two directions. We find that the thermal conductivity of paved crosswise polyethylene laminate (PPEL) reaches as high as 181 W/m-K along two in-plane directions, which is three orders of magnitude larger than bulk amorphous polyethylene and even more than two times larger than PE single chain (54 W/m-K). The analyses of mechanism indicated that PPEL is a much more crystal-like structure due to the inter-chain van der Waals interactions. Our study may provide guides on the design and fabrication of polymer structures with high thermal conductivity.
21 pages
References in corpus (12)
- Thermal memory: a storage of phononic information
- A Materials Perspective on Casimir and van der Waals Interactions
- Significant reduction of lattice thermal conductivity by electron-phonon interaction in silicon with high carrier concentrations: a first-principles study
- Van der Waals spin valves
- Thermal transport in nanostructures
- Nano-Cross-Junction Effect on Phonon Transport in Silicon-Nanowire-Cages
- Momentum-Resolved View of Electron-Phonon Coupling in Multilayer WSe
- Enhancing thermoelectric figure-of-merit by low-dimensional electrical transport in phonon-glass crystals
- Ultimate confinement of phonon propagation in silicon nano-crystalline structure
- Langevin dynamics with spatial correlations as a model for electron-phonon coupling
- Green-Kubo formula for heat conduction in open systems
- Generalized two-temperature model for coupled phonon-magnon diffusion