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Self-encapsulation ultra-soft micro-channel with high thermal conductivity and passive radiation cooling

文献类型： 外文期刊

作者： Su, Weiyin 1 ; Guo, Zhonghui 1 ; Chang, Zeyu 1 ; E, Yuyu 1 ; Li, Wen 2 ; Li, Jie 3 ; Yuan, Shengguang 3 ; Yao, Xi 4 ; Yan, Shengkun 5 ; Ma, Mingguo 1 ; Wang, Kun 1 ; Jiang, Jianxin 1 ;

作者机构： 1.Beijing Forestry Univ, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Sch Mat Sci & Technol, Beijing 100083, Peoples R China

2.Guangxi Minzu Univ, Sch Chem & Chem Engn, Guangxi Collaborat Innovat Ctr Chem & Engn Forest, Guangxi Key Lab Chem & Engn Forest Prod, Nanning 530008, Peoples R China

3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing, Peoples R China

4.Int Ctr Bamboo & Rattan, Beijing 100102, Peoples R China

5.Xinjiang Acad Agr Sci, Agr Mechanizat Inst, Urumqi 830091, Peoples R China

关键词： Micro-channel; High thermal conductivity; Passive radiation cooling; Ultra-high reflectivity

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）

ISSN： 1385-8947

年卷期： 2025 年 503 卷

页码：

收录情况： SCI

摘要： Oriented towards the industrialization of micro-electronic products, micro-channels suitable for micro and small electronic devices are committed to solving the issue of efficient thermal dissipation in the systems. Accordingly, research on integrating multifunctional thermal management composite materials for designing micro-channels has become a hot development trend. Notably, the design concept of efficient thermal dissipation micro-channel with the dual functional synergy of high thermal conductivity and passive radiation cooling was advanced. The compound of high thermal conductivity hexagonal boron nitride (h-BN) and high-elastic thermoplastic polyurethane (TPU) entrusts the micro-channel with a superb substrate with flexibility, stretchability, hydrophobicity, and high thermal conductivity. Draw support from a zero-energy consumption and environmentally friendly passive radiation cooling strategy, the micro-channel with a polyvinylidene fluoride/cellulose acetate (PVDF/CA) nanofiber film acquires an ultra-high reflectivity of up to 99.50 % (0.2-2.5 mu m) and a high emissivity of 94.81 % (8-13 mu m). The programmable patterned graphene oxide (GO) ink is assisted with high-viscosity natural Gleditsia sinensis polysaccharide (GSP) through 3D printing. Ultimately, a self-encapsulated, flexible, high thermal conductivity (0.42 W m-1K- 1), passive radiation cooling micro-channel accumulated a temperature difference of 10.76 degrees C, potentially making a promising thermal management micro-channel system for development.

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