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Thermal management of electronics and thermoelectric power generation from waste heat enabled by flexible Kevlar@SiC thermal conductive materials with liquid-crystalline orientation

机译：Thermal management of electronics and thermoelectric power generation from waste heat enabled by flexible Kevlar@SiC thermal conductive materials with liquid-crystalline orientation

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摘要

As an integral part of electronic devices, efficient thermal conductive materials can accelerate the heat dissipation of electronic devices rapidly, which effectively improves their stability, reliability, and service life. Here, a new mechanism of inducing the liquid-crystalline orientation of nanocomposites is developed to fabricate high thermal conductive Kevlar@SiC membranes (KSMs). The blade coating, liquid-solid phase separation, and hot pressing are conducted to fabricate the KSMs. A high in-plane thermal conductivity of 10.16 W m-1 K-1 is realized in KSMs, about 320% higher than that of neat Kevlar. The KSM can lower the surface temperature of a LED lamp about 9 degrees C when used as the thermal interface material in the thermal management system. Furthermore, the KSM also can be used to generate thermoelectric power by reusing waste heat conducted from a LED lamp. This work provides a new perspective on thermal management of electronics and waste heat utilization by nanocomposites with liquid-crystalline orientation.

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