Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-conductivity graphene composite film and preparation method thereof
The invention belongs to the field of microelectronics, and provides a high-thermal-conductivity graphene composite film and a preparation method thereof.The preparation method comprises the steps that graphene oxide and carbon nanotubes are evenly mixed in a solvent, a hydrothermal reaction is conducted under the sealing condition, and hydrogel is obtained; the hydrogel is subjected to freeze drying, and aerogel is obtained; carrying out hot pressing on the aerogel to form a thin film; and carrying out annealing and heat treatment on the film to obtain the film. The method provided by the invention can effectively improve the dispersion of the carbon nanotubes at low cost, and a three-dimensional cross-linked structure of graphene and the carbon nanotubes is formed through hydrothermal reaction. The aerogel is changed into a thin film sample through hot pressing, and the thin film sample prepared through the method still keeps good mechanical performance after being subjected to heat treatment. The thickness of the prepared film is several microns to hundreds of microns, and the method is also an effective method for preparing the thick film. Through experimental analysis, the conductivity and the thermal conductivity are effectively improved and are far higher than those of a composite film prepared by a common method.
本发明属于微电子领域，提供了一种高导热石墨烯复合薄膜及其制备方法，包括：将氧化石墨烯和碳纳米管在溶剂中混合均匀，在密封条件下进行水热反应，得到水凝胶；将所述水凝胶进行冷冻干燥，得到气凝胶；将所述气凝胶进行热压，形成薄膜；将所述薄膜进行退火、热处理，即得。本发明的方法能低成本且有效改善碳纳米管的分散，水热反应形成三维的石墨烯和碳纳米管的交联结构。将气凝胶通过热压变成薄膜样品，这种方式制备出的薄膜样品经热处理后，依然保持良好的机械性能。制备的薄膜厚度是几微米到几百微米不等，也是制备厚膜的一种有效方法。经过实验分析，电导率，热导率能有效提升远高于普通方法制备的复合薄膜。
High-thermal-conductivity graphene composite film and preparation method thereof
The invention belongs to the field of microelectronics, and provides a high-thermal-conductivity graphene composite film and a preparation method thereof.The preparation method comprises the steps that graphene oxide and carbon nanotubes are evenly mixed in a solvent, a hydrothermal reaction is conducted under the sealing condition, and hydrogel is obtained; the hydrogel is subjected to freeze drying, and aerogel is obtained; carrying out hot pressing on the aerogel to form a thin film; and carrying out annealing and heat treatment on the film to obtain the film. The method provided by the invention can effectively improve the dispersion of the carbon nanotubes at low cost, and a three-dimensional cross-linked structure of graphene and the carbon nanotubes is formed through hydrothermal reaction. The aerogel is changed into a thin film sample through hot pressing, and the thin film sample prepared through the method still keeps good mechanical performance after being subjected to heat treatment. The thickness of the prepared film is several microns to hundreds of microns, and the method is also an effective method for preparing the thick film. Through experimental analysis, the conductivity and the thermal conductivity are effectively improved and are far higher than those of a composite film prepared by a common method.
本发明属于微电子领域，提供了一种高导热石墨烯复合薄膜及其制备方法，包括：将氧化石墨烯和碳纳米管在溶剂中混合均匀，在密封条件下进行水热反应，得到水凝胶；将所述水凝胶进行冷冻干燥，得到气凝胶；将所述气凝胶进行热压，形成薄膜；将所述薄膜进行退火、热处理，即得。本发明的方法能低成本且有效改善碳纳米管的分散，水热反应形成三维的石墨烯和碳纳米管的交联结构。将气凝胶通过热压变成薄膜样品，这种方式制备出的薄膜样品经热处理后，依然保持良好的机械性能。制备的薄膜厚度是几微米到几百微米不等，也是制备厚膜的一种有效方法。经过实验分析，电导率，热导率能有效提升远高于普通方法制备的复合薄膜。
High-thermal-conductivity graphene composite film and preparation method thereof
一种高导热石墨烯复合薄膜及其制备方法
WANG YILIN (Autor:in) / JIANG YOUCHENG (Autor:in)
25.04.2023
Patent
Elektronische Ressource
Chinesisch
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