Preparation method of high-thermal-conductivity composite material based on graphitized polydopamine coated metal particles
A polydopamine and metal particle technology, applied in the field of composite materials, can solve problems such as low thermal conductivity, and achieve the effects of high thermal conductivity, simple process and improved thermal conductivity.
Inactive Publication Date: 2021-01-29
TIANJIN UNIV
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Abstract
The invention discloses a preparation method of a high-thermal-conductivity composite material based on graphitized polydopamine coated metal particles. The method comprises the following steps of: blending metal particles coated with a layer of thickness-controllable polydopamine with a carbon-based filler by using high thermal conductivity of graphene in the in-plane direction, isotropic thermalconductivity of metal and adhesivity of polydopamine, connecting a graphene sheet layer by using the adhesion of polydopamine, and finally, graphitizing polydopamine and melting metal particles through high-temperature compression treatment, thereby obtaining the high-thermal-conductivity composite material. According to the preparation method, high thermal conductivity of metal and graphitized polydopamine is utilized, and an efficient thermal conduction channel is built between graphene layers, so that the high thermal performance of the material in the thickness direction is effectively improved, the defect of poor thermal conductivity of the material in the thickness direction is overcome, and the high-performance thermal conduction material is prepared.
Application Domain
Material nanotechnologyHeat-exchange elements
Technology Topic
Thermal conductivityGraphite +6
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PUM
Property | Measurement | Unit |
Thermal conductivity | 865.0 | W/k/m |
Thermal conductivity | 893.0 | W/k/m |
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