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Heat-conducting film with reinforced longitudinal heat conductivity and application of heat-conducting film
The invention relates to the field of interface heat conduction materials, and particularly provides a heat conduction film with reinforced longitudinal heat conductivity, and a preparation method comprises the following steps: S1, mixing a graphite oxide solution and an additive solution according to a certain mass ratio to prepare mixed slurry; coating a base material with the mixed slurry, drying to obtain a diaphragm, and cutting the diaphragm; s2, stacking a specified number of cut membranes according to the thickness of the heat conducting membrane; s3, the stacked membranes are placed at the temperature of 50 DEG C to 250 DEG C to be pretreated for 30 h to 100 h; s4, performing carbonization treatment on the membrane; s5, carrying out graphitization treatment on the membrane; and S6, calendering to obtain a finished product. By optimizing the type and dosage of the additive and optimizing the preparation method, the prepared heat conduction film has excellent longitudinal heat conduction coefficient which is as high as 30W/m.k and is far higher than the industry level, and can be used on a heat dissipation device.
本申请涉及界面导热材料领域，具体提供了一种强化纵向导热率的导热膜，制备方法包括以下步骤：S1、将氧化石墨溶液和添加剂溶液按照一定质量比混合，制成混合浆料；将混合浆料涂布在基材上干燥后得到膜片，对其进行切割；S2、根据导热膜厚度将规定数量切割后的膜片进行堆叠；S3、将堆叠好的膜片置于50‑250℃下预处理30‑100h；S4、对膜片碳化处理；S5、对膜片石墨化处理；S6、压延成成品。通过优化添加剂的种类和用量，并优化制备方法，使所制备的导热膜具有优异的纵向导热系数，高达30W/m·k，远高于行业水平，可用于散热装置上使用。
Heat-conducting film with reinforced longitudinal heat conductivity and application of heat-conducting film
The invention relates to the field of interface heat conduction materials, and particularly provides a heat conduction film with reinforced longitudinal heat conductivity, and a preparation method comprises the following steps: S1, mixing a graphite oxide solution and an additive solution according to a certain mass ratio to prepare mixed slurry; coating a base material with the mixed slurry, drying to obtain a diaphragm, and cutting the diaphragm; s2, stacking a specified number of cut membranes according to the thickness of the heat conducting membrane; s3, the stacked membranes are placed at the temperature of 50 DEG C to 250 DEG C to be pretreated for 30 h to 100 h; s4, performing carbonization treatment on the membrane; s5, carrying out graphitization treatment on the membrane; and S6, calendering to obtain a finished product. By optimizing the type and dosage of the additive and optimizing the preparation method, the prepared heat conduction film has excellent longitudinal heat conduction coefficient which is as high as 30W/m.k and is far higher than the industry level, and can be used on a heat dissipation device.
本申请涉及界面导热材料领域，具体提供了一种强化纵向导热率的导热膜，制备方法包括以下步骤：S1、将氧化石墨溶液和添加剂溶液按照一定质量比混合，制成混合浆料；将混合浆料涂布在基材上干燥后得到膜片，对其进行切割；S2、根据导热膜厚度将规定数量切割后的膜片进行堆叠；S3、将堆叠好的膜片置于50‑250℃下预处理30‑100h；S4、对膜片碳化处理；S5、对膜片石墨化处理；S6、压延成成品。通过优化添加剂的种类和用量，并优化制备方法，使所制备的导热膜具有优异的纵向导热系数，高达30W/m·k，远高于行业水平，可用于散热装置上使用。
Heat-conducting film with reinforced longitudinal heat conductivity and application of heat-conducting film
一种强化纵向导热率的导热膜及其应用
JIAO YANYAN (author) / DENG ZIMING (author) / ZHANG ZHIXU (author)
2024-05-14
Patent
Electronic Resource
Chinese
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