Work

A novel concept for fabricating the flexible vapor chamber using the microcrystalline cellulose powder as the wick structure

Year: 2025

Type: article

Abstract: The research on flexible heat pipes and vapor chambers has been received more and more attention recently. In this paper, a novel concept for fabricating the flexible vapor chamber (FVC) using the microcrystalline cellulose powder (MCP) and carbon-doped liquid crystal polymer (C-LCP) plate was proposed. The microgroove structure was prepared on the surface of C-LCP plate by the laser processing firstly. Then MCP was thermally imprinted into those micro-grooves as the wick structure of FVC. The influence of hot-pressing temperature, hot-pressing pressure and MCP mass on the capillary property of FVC. The result showed that the capillary property of FVC was optimal when the temperature was 150°C, the pressure was 5 kN, and MCP mass was 1 g. The capillary rise height of FVC could reach approximately 96.86 mm with a K/R eff value of 0.145 μm.

Source: Energy Nexus

DOI: 10.1016/j.nexus.2025.100589