A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a manufacturing method of an ultra-thick graphene heat-conducting radiating fin. The manufacturing method comprises the following steps: (1) preparing graphene oxide slurry; (2) performing vacuum defoaming on the graphene oxide slurry; (3) injecting the defoamed graphene oxide slurry into a plaster mold, pressurizing the graphene oxide slurry with high-pressure gas, dehydrating and forming graphene oxide, and demolding to obtain a blank; (4) drying the blank; (5) performing thermal reduction on the dried blank to obtain a graphene blank; (6) sintering the graphene blank in an inert atmosphere to obtain a semi-finished product; and (7) calendering the semi-finished product to obtain the super-thick graphene heat-conducting radiating fin. Compared with the existing coating process, the method disclosed by the invention effectively breaks through the limitation of the thickness of the film layer, can realize any customized production of the graphene heat-conducting cooling fin product with the thickness of 300 microns to 1 mm, reduces the cost by more than 50%, and can improve the production efficiency by more than 20%.
本发明公开了一种超厚石墨烯导热散热片的制造方法，该制造方法包括如下步骤：(1)配制氧化石墨烯浆料；(2)对氧化石墨烯浆料进行真空脱泡；(3)将脱泡的氧化石墨烯浆料注入石膏模具中，用高压气体对氧化石墨烯浆料加压，使氧化石墨烯脱水成型后，脱模，得到坯料；(4)对坯料进行干燥；(5)将干燥后的坯料热还原，得到石墨烯坯料；(6)将石墨烯坯料在惰性气氛下烧结，得到半成品；(7)将半成品压延，得到超厚石墨烯导热散热片。与现有涂布工艺相比，本发明的方法有效突破了膜层厚度的限制，可以实现石墨烯导热散热片产品厚度从300μm到1mm之间进行任意定制化生产，成本下降50％以上，生产效率能够提升20％以上。
The invention discloses a manufacturing method of an ultra-thick graphene heat-conducting radiating fin. The manufacturing method comprises the following steps: (1) preparing graphene oxide slurry; (2) performing vacuum defoaming on the graphene oxide slurry; (3) injecting the defoamed graphene oxide slurry into a plaster mold, pressurizing the graphene oxide slurry with high-pressure gas, dehydrating and forming graphene oxide, and demolding to obtain a blank; (4) drying the blank; (5) performing thermal reduction on the dried blank to obtain a graphene blank; (6) sintering the graphene blank in an inert atmosphere to obtain a semi-finished product; and (7) calendering the semi-finished product to obtain the super-thick graphene heat-conducting radiating fin. Compared with the existing coating process, the method disclosed by the invention effectively breaks through the limitation of the thickness of the film layer, can realize any customized production of the graphene heat-conducting cooling fin product with the thickness of 300 microns to 1 mm, reduces the cost by more than 50%, and can improve the production efficiency by more than 20%.
本发明公开了一种超厚石墨烯导热散热片的制造方法，该制造方法包括如下步骤：(1)配制氧化石墨烯浆料；(2)对氧化石墨烯浆料进行真空脱泡；(3)将脱泡的氧化石墨烯浆料注入石膏模具中，用高压气体对氧化石墨烯浆料加压，使氧化石墨烯脱水成型后，脱模，得到坯料；(4)对坯料进行干燥；(5)将干燥后的坯料热还原，得到石墨烯坯料；(6)将石墨烯坯料在惰性气氛下烧结，得到半成品；(7)将半成品压延，得到超厚石墨烯导热散热片。与现有涂布工艺相比，本发明的方法有效突破了膜层厚度的限制，可以实现石墨烯导热散热片产品厚度从300μm到1mm之间进行任意定制化生产，成本下降50％以上，生产效率能够提升20％以上。
HEAT-RADIATING GRAPHENE SHEET AND MANUFACTURING METHOD THEREFOR
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