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Preparation method of high-thermal-conductivity porous graphite skeleton
The invention discloses a preparation method of a high-thermal-conductivity porous graphite skeleton, the porous graphite skeleton is a three-dimensional porous superstructure formed by a unit cell array, the three-dimensional porous superstructure can be regulated and controlled by changing the characteristic size of the unit cell, and the number and size of holes in unit volume and a thermal-conductive network structure are shown in figure 1. The preparation process of the high-thermal-conductivity porous graphite skeleton mainly comprises the steps of graphite powder coating pretreatment, mixed powder preparation, porous graphite skeleton biscuit 3D printing forming, secondary curing, rapid carbonization, multiple times of vacuum pressure impregnation densification, chemical vapor infiltration, graphitization and the like, and the high-thermal-conductivity porous graphite skeleton is obtained. The novel method is provided for preparation of the high-thermal-conductivity porous graphite skeleton, the forming process is simple and efficient, the three-dimensional porous structure is convenient to regulate and control, and the prepared high-thermal-conductivity porous graphite skeleton has the characteristics of high strength, high density, high thermal conductivity and the like, can be applied to integrated circuits and electronic industries as a thermal management material, and meets the technical field of high-thermal-conductivity application.
本发明公开了一种高导热多孔石墨骨架制备方法，所述多孔石墨骨架是由单胞阵列而成三维多孔超结构，通过改变单胞的特征尺寸可以实现三维多孔超结构调控，包括单位体积内孔洞数量、大小以及导热网络结构，见图1。所述的高导热多孔石墨骨架制备过程主要包括石墨粉末包覆预处理、混合粉末制备、多孔石墨骨架素坯3D打印成形、二次固化、快速碳化、多次真空压力浸渍致密化、化学气相浸渗、石墨化等，获得高导热多孔石墨骨架。本发明为高导热多孔石墨骨架制备提供了新方法，成形工艺简单高效，三维多孔结构便于调控，所制备的高导热多孔石墨骨架，具有高强高密高导热等特点，可以作为热管理材料应用于集成电路、电子行业，满足高导热应用技术领域。
Preparation method of high-thermal-conductivity porous graphite skeleton
The invention discloses a preparation method of a high-thermal-conductivity porous graphite skeleton, the porous graphite skeleton is a three-dimensional porous superstructure formed by a unit cell array, the three-dimensional porous superstructure can be regulated and controlled by changing the characteristic size of the unit cell, and the number and size of holes in unit volume and a thermal-conductive network structure are shown in figure 1. The preparation process of the high-thermal-conductivity porous graphite skeleton mainly comprises the steps of graphite powder coating pretreatment, mixed powder preparation, porous graphite skeleton biscuit 3D printing forming, secondary curing, rapid carbonization, multiple times of vacuum pressure impregnation densification, chemical vapor infiltration, graphitization and the like, and the high-thermal-conductivity porous graphite skeleton is obtained. The novel method is provided for preparation of the high-thermal-conductivity porous graphite skeleton, the forming process is simple and efficient, the three-dimensional porous structure is convenient to regulate and control, and the prepared high-thermal-conductivity porous graphite skeleton has the characteristics of high strength, high density, high thermal conductivity and the like, can be applied to integrated circuits and electronic industries as a thermal management material, and meets the technical field of high-thermal-conductivity application.
本发明公开了一种高导热多孔石墨骨架制备方法，所述多孔石墨骨架是由单胞阵列而成三维多孔超结构，通过改变单胞的特征尺寸可以实现三维多孔超结构调控，包括单位体积内孔洞数量、大小以及导热网络结构，见图1。所述的高导热多孔石墨骨架制备过程主要包括石墨粉末包覆预处理、混合粉末制备、多孔石墨骨架素坯3D打印成形、二次固化、快速碳化、多次真空压力浸渍致密化、化学气相浸渗、石墨化等，获得高导热多孔石墨骨架。本发明为高导热多孔石墨骨架制备提供了新方法，成形工艺简单高效，三维多孔结构便于调控，所制备的高导热多孔石墨骨架，具有高强高密高导热等特点，可以作为热管理材料应用于集成电路、电子行业，满足高导热应用技术领域。
Preparation method of high-thermal-conductivity porous graphite skeleton
一种高导热多孔石墨骨架制备方法
WU HAIHUA (author) / GONG LIANG (author) / ZHANG HUALONG (author) / JI YUNXIN (author)
2024-02-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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