首页|A protocol to further improve the thermal conductivity of silicone-matrix thermal interface material with nano-fillers
A protocol to further improve the thermal conductivity of silicone-matrix thermal interface material with nano-fillers
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NSTL
Elsevier
Silicone oil is used as matrix material and five nano-materials after surface treatment are employed as additives for preparing high performance silicone based thermal paste. The effects of filler weight fraction, morphologies and sizes on the thermal conductivity of polymer composites are studied. Experiment results show that the composite filled with ball-shaped aluminum (Al) particles exhibits high thermal conductivity (1.55 W/(m K)) at 80 wt.% loading, which is 7.6 times greater than pure silicone oil. Rod-shaped filler is more easily to form heat conductive pathways than ball-, platelet- and other irregular-shaped fillers. The effective synergistic enhancement in phonon transport in composites is achieved and a further 63% improvement in the thermal conductivity is realized by adding 75 wt.% ball-shaped Al particles and 10 wt.% rod-shaped zinc oxide (ZnO). Finally, the obtained data are compared with the value calculated by the theoretical thermal conductivity prediction models.
NSTL
Elsevier
