物理学报2025，Vol.74Issue(7)：138-147,10.DOI:10.7498/aps.74.20241731
多维碳基导热增强微胶囊相变复合材料制备及热性能调控
Preparation and thermal performance tuning of multidimensional carbon-based microcapsule phase change composites
摘要
Abstract
In order to meet the requirements for both high thermal conductivity and large latent heat storage and release of thermal management materials for spacecraft,a multidimensional carbon-based,thermally enhanced microencapsulated phase change composite is prepared by using a hot-pressing technique in this work.This method solves the limitations of traditional phase change materials,which suffer from low thermal conductivity and a propensity for liquid leakage.The effects of different content values and ratios of microencapsulated phase change materials,flake graphite,and pitch-based carbon fibers on the composite's thermal properties,specifically thermal conductivity and latent heat are systematically investigated by integrating experimental assessments with finite element numerical simulations.Furthermore,the mechanism for forming an internal multidimensional heat conduction network is elucidated. These results indicate that introducing multidimensional thermally conductive materials into the microencapsulated phase change system,can establish a continuous and dense multidimensional carbon-based conduction network through optimizing component composition and structure.Using the synergistic effects of these conductive materials and a multi-size flake graphite filling strategy,the overall thermal conductivity of the composite is significantly enhanced,reaching 1.021 W/(m·K),while maintaining a high latent heat of 81.540 J/g.These findings provide theoretical and practical guidance for optimizing and applying advanced thermal management materials to spacecraft.关键词
航天器热管理/微胶囊相变复合材料/多维碳基网络/协同导热增强Key words
spacecraft thermal management/microcapsule phase change composite materials/multidimensional carbon-based network/synergistic thermal enhancement引用本文复制引用
贺晨波,汪子涵,唐桂华,孙晶晶,孙陈诚,李俊宁,王晓艳..多维碳基导热增强微胶囊相变复合材料制备及热性能调控[J].物理学报,2025,74(7):138-147,10.基金项目
国家重点基础研究发展计划(批准号:2022YFC2204302)和国家自然科学基金(批准号:52130604)资助的课题. Project supported by the State Key Development Program for Basic Research of China(Grant No.2022YFC2204302)and the National Natural Science Foundation of China(Grant No.52130604). （批准号:2022YFC2204302）
