Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-thermal-conductivity block
The invention provides a preparation method of a high-thermal-conductivity block. The method comprises the following steps: S1, crushing artificial graphite to obtain a material A, and crushing expanded graphite to obtain a material B; s2, mixing the material A and the material B in proportion, wherein the material B is more than the material A; s3, pressing the mixed material A and material B into a block body, and forming a large number of micro-pore structures on the surface of the block body and penetrating through the whole thickness direction; s4, coating or impregnating the block with graphite oxide or graphene oxide; specifically, one side is coated and dried, and then the other side is coated and dried; s5, heat treatment is conducted, specifically, the temperature is gradually increased from 100 DEG C to 300 DEG C, then increased to 1000 DEG C and then increased to 3000 DEG C; and S6, flat pressing is conducted, the pressure is 0-1000 tons, the pressure increasing speed is 1 ton/min, and the high-heat-conduction block with the density being 1.2-2 g/cm < 3 > is obtained. According to the prepared high-thermal-conductivity block, the longitudinal thermal conductivity can be greatly improved, the longitudinal thermal conductivity is larger than 50 w/m.k, and the use requirement of a high-thickness occasion is met.
本发明高导热块体制备方法，S1、将人工石墨粉碎，得到A料，将膨胀石墨粉碎，得到B料；S2、将A料和B料按比例混合，B料多于A料；S3、将混合后的A料和B料压成块体，块体表面形成大量微型孔隙结构，贯穿整个厚度方向；S4、块体上涂覆或浸渍氧化石墨或氧化石墨烯；具体的，先涂一面，干燥，再涂另一面，干燥；S5、热处理，逐渐升温，先100℃升至300℃，再升至1000℃，再升至3000℃；S6、平压，压力0‑1000吨，升压速度1吨/min，得到密度1.2‑2g/cm3的高导热块体。本发明制备出来的高导热块体能够大幅提升纵向导热性能，纵向导热大于50w/m.k，满足高厚度场合的使用需求。
Preparation method of high-thermal-conductivity block
The invention provides a preparation method of a high-thermal-conductivity block. The method comprises the following steps: S1, crushing artificial graphite to obtain a material A, and crushing expanded graphite to obtain a material B; s2, mixing the material A and the material B in proportion, wherein the material B is more than the material A; s3, pressing the mixed material A and material B into a block body, and forming a large number of micro-pore structures on the surface of the block body and penetrating through the whole thickness direction; s4, coating or impregnating the block with graphite oxide or graphene oxide; specifically, one side is coated and dried, and then the other side is coated and dried; s5, heat treatment is conducted, specifically, the temperature is gradually increased from 100 DEG C to 300 DEG C, then increased to 1000 DEG C and then increased to 3000 DEG C; and S6, flat pressing is conducted, the pressure is 0-1000 tons, the pressure increasing speed is 1 ton/min, and the high-heat-conduction block with the density being 1.2-2 g/cm < 3 > is obtained. According to the prepared high-thermal-conductivity block, the longitudinal thermal conductivity can be greatly improved, the longitudinal thermal conductivity is larger than 50 w/m.k, and the use requirement of a high-thickness occasion is met.
本发明高导热块体制备方法，S1、将人工石墨粉碎，得到A料，将膨胀石墨粉碎，得到B料；S2、将A料和B料按比例混合，B料多于A料；S3、将混合后的A料和B料压成块体，块体表面形成大量微型孔隙结构，贯穿整个厚度方向；S4、块体上涂覆或浸渍氧化石墨或氧化石墨烯；具体的，先涂一面，干燥，再涂另一面，干燥；S5、热处理，逐渐升温，先100℃升至300℃，再升至1000℃，再升至3000℃；S6、平压，压力0‑1000吨，升压速度1吨/min，得到密度1.2‑2g/cm3的高导热块体。本发明制备出来的高导热块体能够大幅提升纵向导热性能，纵向导热大于50w/m.k，满足高厚度场合的使用需求。
Preparation method of high-thermal-conductivity block
一种高导热块体制备方法
LIN JIANFENG (Autor:in) / FENG WEIMING (Autor:in)
21.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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