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High-thermal-conductivity SiC/GNPs composite ceramic heat exchange tube and preparation method thereof
The preparation method comprises the following steps: preparing spherical silicon carbide powder through physical shaping, mixing the spherical silicon carbide powder with a graphene dispersion liquid and an organic auxiliary agent solution to prepare SiC/GNPs pug, carrying out aging and pugging to prepare compact SiC/GNPs pug, carrying out vacuum screw extrusion molding, and carrying out drying and pressureless sintering to prepare the high-thermal-conductivity SiC/GNPs composite ceramic heat exchange tube. The heat conductivity coefficient of the prepared high-heat-conductivity SiC/GNPs composite ceramic heat exchange tube is 207 W/(m.K)-347 W/(m.K) and is far higher than that of a silicon carbide ceramic material prepared through a traditional technology, and the technical problems that the heat conductivity of the silicon carbide material is low, and the use requirements of enterprises cannot be met are solved.
本发明通过在采用物理整形制得球形碳化硅粉体，与石墨烯分散液、有机助剂溶液混合制得SiC/GNPs泥料，经陈腐和练泥，制得致密SiC/GNPs泥料，然后通过真空螺杆挤压成型，经烘干和无压烧结制得高导热SiC/GNPs复合陶瓷热交换管，实验表明，本发明制得的高导热SiC/GNPs复合陶瓷热交换管的导热系数为207 W/(m·K)‑347 W/(m·K)，远远高于传统工艺制得碳化硅陶瓷材料，解决了碳化硅材料的热导率低，不能达到企业的使用需求的技术问题。
High-thermal-conductivity SiC/GNPs composite ceramic heat exchange tube and preparation method thereof
The preparation method comprises the following steps: preparing spherical silicon carbide powder through physical shaping, mixing the spherical silicon carbide powder with a graphene dispersion liquid and an organic auxiliary agent solution to prepare SiC/GNPs pug, carrying out aging and pugging to prepare compact SiC/GNPs pug, carrying out vacuum screw extrusion molding, and carrying out drying and pressureless sintering to prepare the high-thermal-conductivity SiC/GNPs composite ceramic heat exchange tube. The heat conductivity coefficient of the prepared high-heat-conductivity SiC/GNPs composite ceramic heat exchange tube is 207 W/(m.K)-347 W/(m.K) and is far higher than that of a silicon carbide ceramic material prepared through a traditional technology, and the technical problems that the heat conductivity of the silicon carbide material is low, and the use requirements of enterprises cannot be met are solved.
本发明通过在采用物理整形制得球形碳化硅粉体，与石墨烯分散液、有机助剂溶液混合制得SiC/GNPs泥料，经陈腐和练泥，制得致密SiC/GNPs泥料，然后通过真空螺杆挤压成型，经烘干和无压烧结制得高导热SiC/GNPs复合陶瓷热交换管，实验表明，本发明制得的高导热SiC/GNPs复合陶瓷热交换管的导热系数为207 W/(m·K)‑347 W/(m·K)，远远高于传统工艺制得碳化硅陶瓷材料，解决了碳化硅材料的热导率低，不能达到企业的使用需求的技术问题。
High-thermal-conductivity SiC/GNPs composite ceramic heat exchange tube and preparation method thereof
高导热SiC/GNPs复合陶瓷热交换管及其制备方法
HOU JINGYUAN (author) / WANG CHENJIAO (author) / LIU PENG (author) / JING CHANGLONG (author) / LI HUI (author) / HUANG KAI (author) / WANG BIN (author)
2024-05-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-thermal-conductivity ceramic-polymer composite material and preparation method thereof
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