METAL-FREE THERMAL CONDUCTIVE POLYMERS

摘要

The thermal conductivity of polymers is enhanced by using Carbon Nanofibers. Thermal Management of electronic devices is one of the potential application fields of such compounds. Annealing carbon nanofibers at high temperatures improves their graphitic properties and therefore the performance as thermal additive in polymers. We have indications that nanofiber composites compressed to material dimensions in the range of the fiber length show higher thermal conductivities than bulk materials of arbitrary thickness. Measurements were done for thermoplastic materials by using laser flash techniques according to ASTM E 1461 (DIN EN 821) and for duroplastic materials using ASTM D 5470.