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A platform for research: civil engineering, architecture and urbanism
Preparation method of heat-conducting material with high heat conductivity and high rebound resilience
The invention discloses a preparation method of a heat-conducting material with high heat conductivity and high rebound resilience, which comprises the following specific steps: performing air oxidation treatment on powder asphalt, preparing the powder asphalt into slurry by adopting an organic solvent, and putting the slurry into a grinding tool; cutting the high-thermal-conductivity graphite film into a thermal-conductivity network structure with a certain shape, and placing the thermal-conductivity network structure in the asphalt slurry; placing a grinding tool filled with the asphalt slurry and the high-thermal-conductivity graphite film in a certain shape in a carbonization furnace, and performing carbonization treatment at 500-1000 DEG C; and placing the carbonized material in a graphitization furnace, and carrying out graphitization treatment at 2000-3000 DEG C for 1-4 hours. Compared with a traditional heat conduction material, the material provided by the invention has the advantages that the rebound rate is 80% or above, the compression strength is higher than 5MPa, and the heat conductivity is higher than 150W/(m.K). Aiming at the problems of poor rebound resilience, low compression strength, large difference of thermal expansion coefficients among different materials and the like of the existing heat-conducting material, the invention provides the high-heat-conductivity and high-rebound-resilience heat-conducting material for the aerospace industry, and has a positive effect on promoting the development of the aerospace field in China.
本发明公开一种高热导率及高回弹性导热材料的制备方法，具体步骤如下：将粉体沥青进行空气氧化处理沥青，采用有机溶剂将粉体沥青制成浆体，并置于磨具中；将高导热石墨膜裁切成一定形状的导热网络结构，并置于沥青浆体中；将装有沥青浆体和一定形状高导热石墨膜的磨具置于炭化炉中，在500~1000oC进行炭化处理；炭化料再置于石墨化炉中，并于2000~3000oC石墨化处理1~4h。本发明提供的材料相比于传统导热材料，回弹率为80%以上，压缩强度高于5MPa，热导率高于150W/(m·K)。该发明针对现有导热材料回弹性差、压缩强度低、不同材质间热膨胀系数差异大等问题，为航天航空行业提供了一种高热导率及高回弹性导热材料，对促进我国航天航空领域的发展具有积极作用。
Preparation method of heat-conducting material with high heat conductivity and high rebound resilience
The invention discloses a preparation method of a heat-conducting material with high heat conductivity and high rebound resilience, which comprises the following specific steps: performing air oxidation treatment on powder asphalt, preparing the powder asphalt into slurry by adopting an organic solvent, and putting the slurry into a grinding tool; cutting the high-thermal-conductivity graphite film into a thermal-conductivity network structure with a certain shape, and placing the thermal-conductivity network structure in the asphalt slurry; placing a grinding tool filled with the asphalt slurry and the high-thermal-conductivity graphite film in a certain shape in a carbonization furnace, and performing carbonization treatment at 500-1000 DEG C; and placing the carbonized material in a graphitization furnace, and carrying out graphitization treatment at 2000-3000 DEG C for 1-4 hours. Compared with a traditional heat conduction material, the material provided by the invention has the advantages that the rebound rate is 80% or above, the compression strength is higher than 5MPa, and the heat conductivity is higher than 150W/(m.K). Aiming at the problems of poor rebound resilience, low compression strength, large difference of thermal expansion coefficients among different materials and the like of the existing heat-conducting material, the invention provides the high-heat-conductivity and high-rebound-resilience heat-conducting material for the aerospace industry, and has a positive effect on promoting the development of the aerospace field in China.
本发明公开一种高热导率及高回弹性导热材料的制备方法，具体步骤如下：将粉体沥青进行空气氧化处理沥青，采用有机溶剂将粉体沥青制成浆体，并置于磨具中；将高导热石墨膜裁切成一定形状的导热网络结构，并置于沥青浆体中；将装有沥青浆体和一定形状高导热石墨膜的磨具置于炭化炉中，在500~1000oC进行炭化处理；炭化料再置于石墨化炉中，并于2000~3000oC石墨化处理1~4h。本发明提供的材料相比于传统导热材料，回弹率为80%以上，压缩强度高于5MPa，热导率高于150W/(m·K)。该发明针对现有导热材料回弹性差、压缩强度低、不同材质间热膨胀系数差异大等问题，为航天航空行业提供了一种高热导率及高回弹性导热材料，对促进我国航天航空领域的发展具有积极作用。
Preparation method of heat-conducting material with high heat conductivity and high rebound resilience
一种高热导率及高回弹性导热材料的制备方法
ZHAN LIANG (author) / GUO WENHAO (author) / WANG YANLI (author) / ZHANG YONGZHENG (author) / SHEN CHUNYIN (author)
2024-06-18
Patent
Electronic Resource
Chinese
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