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首页> 外文期刊>ACS applied materials & interfaces >Flexible Films for Smart Thermal Management: Influence of Structure Construction of a Two-Dimensional Graphene Network on Active Heat Dissipation Response Behavior
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Flexible Films for Smart Thermal Management: Influence of Structure Construction of a Two-Dimensional Graphene Network on Active Heat Dissipation Response Behavior

机译：智能热管理柔性薄膜：二维石墨烯网络结构结构对主动散热响应行为的影响

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摘要

In recent years, the development and wide application of micro-electronic technology brings forward high demands for active thermal management systems. However, such systems are not only costly, but also usually tethered, and need constant power to operate. To avoid such a limitation, smart thermal management systems have been developed to achieve active thermal management. Here, inspired by the temperature control principle of a butterfly, a shape memory polymer was used to endow the thermally conductive graphene-polymer hybrid film with intelligence. As the device temperature reaches 60 degrees C, the bud-shaped hybrid film started to bloom, which is a visually active heat dissipation process. As a result, this active process promoted the thermal management capacity of the hybrid film and increased the temperature-raising time of the light-emitting diode. Through the construction of a bilayer structure, the transmission channel for phonon transfer was optimized, which lead the hybrid film to attain a remarkable thermal conductivity of 21.83 W.m(-1).K-1 with 30 wt % graphene. This graphene-polymer hybrid film shows potential application in the smart thermal management field.
机译：近年来，微型电子技术的发展和广泛应用为有源热管理系统带来了高要求。然而，这种系统不仅是昂贵的，而且通常是持续的，并且需要恒定的功率来操作。为避免这种限制，已经开发出智能热管理系统来实现积极的热管理。这里，受到蝶形的温度控制原理的启发，使用形状记忆聚合物来赋予具有智能的导热石墨烯 - 聚合物混合膜。随着器件温度达到60摄氏度，芽形杂交膜开始绽放，这是视觉上有源的散热过程。结果，该活性过程促进了混合膜的热管理能力并增加了发光二极管的温度升高时间。通过建造双层结构，优化了声子传递的传输通道，其引入了混合膜，以获得具有30wt％石墨烯的21.83wm（-1）.k-1的显着导热率。该石墨烯 - 聚合物杂交膜显示智能热管理领域的潜在应用。

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