柔性热管的研究进展与展望

Research Progress and Outlook of Flexible Heat Pipe

现代电子设备的大功率化、高度集成化、微型化、柔性化发展趋势对先进的热管理材料和技术提出了迫切需求。基于气液相变的热管技术是一种高效的热管理手段,然而传统的刚性热管满足不了复杂结构、狭小空间的微型电子元器件以及可折叠电子器件的高性能散热需要,发展新型柔性热管技术有望克服上述问题,具有重要意义。系统介绍了柔性热管的基础理论、结构设计、材料加工、器件制备等方面的研究进展,以及其在航空航天、电子产品等领域的实际应用。基于柔性热管的发展历程和研究现状,对该领域今后的研究和发展方向做出了展望。

The rapid development of modern electronics towards high power density,miniaturization and high integration raises more urgent requirement on exploring advanced thermal management materials and technologies.Based on vapor-liquid phase change heat transfer,heat pipe technology is an effective tool for thermal management.Conventional rigid heat pipes,however,cannot meet the thermal management needs for microelectronics with complex structure and small space.Thus,the development of flexible heat pipe technology,which has the potential to overcome the shortcomings of rigid heat pipes,carries important technological significance.This paper presents a systematic review of the recent progress in fundamental theory,structure design,materials processing and device fabrication technologies of flexible heat pipes,and introduces their applications in aerospace and electronic products.Based on the development history and current status,we provide an outlook on the research and development of flexible heat pipes in the future.