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Главная Архив Thermal Letter Оргкомитет Будущие конференции AIHTC
International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

EVAPORATIVE PROPERTIES OF WATER ON THE SUPER-WETTING CARBON NANOTUBE BUCKYPAPERS

Guang Zhang
Energy Conversion Research Center, Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China

Yantong Xu
Energy Conversion Research Center, Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China

DOI: 10.1615/IHTC16.bae.022371
pages 865-869


Ключевые слова: New materials, Boiling and evaporation, Carbon nanotubes, Superhydrophobicity, Superhydrophilicity, Phase-change properties

Аннотация

Nowadays, thermal management techniques have been key obstacles to the rapid development of integrated electronic devices. Among different heat management techniques, the phase-change heat transfer devices are considered as the most effective methods to manage the high-density redundant heat in integrated electronic chips. It has been confirmed that heat transfer performance of phase-change devices could be obviously improved by novel materials with special wettability. Here, a kind of super-aligned carbon nanotubes (CNT) arrays are synthesized by the chemical vapor deposition method, and the macroscopic CNT buckypapers are fabricated from the CNT arrays. The CNT buckypapers have advantages of light-weight, super-mechanical and thermal properties. Then the UV+O3 treatment is adopted to modify the wetting properties of the CNT buckypapers. Furthermore, the evaporation processes of DI water on the CNT surface with different wettabilities are investigated. Our results indicate that the evaporative heat dissipation properties of water on CNT buckypapers are obviously enhanced by the UV+O3 treatment. Based on the phase-change processes of water on CNT buckypapers with different wettability, optimized methods and materials will be developed to enhance the phase-change thermal properties of water. Our work reported here will have extensive influence on the phase-change thermal management devices.

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