Preparation method of hybrid graphene gel/phase-change heat-conducting composite material

A graphene gel, phase change heat conduction technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of uneven dispersion, easy stacking, etc., achieve good repeatability, improve thermal conductivity, and improve thermal conductivity. The effect of stability
CN106634855AInactive Publication Date: 2017-05-10TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2017-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a hybrid graphene gel / phase-change heat-conducting composite material. The preparation method comprises the following steps that 1, graphite oxide is taken and dispersed in water and is prepared into an oxidized graphene solution; 2, the oxidized graphene solution obtained in the step 1 is put in a reaction kettle, and hydrothermal reaction and drying are performed to obtain graphene gel; 3, then a solid-liquid organic phase-change material and the graphene gel prepared in the step 2 are put under vacuum condition, heating is performed to remove excessive solid-liquid organic phase-change material, and cooling is performed to obtain the graphene gel / phase-change heat-conducting composite material. Compared with the prior art, the prepared composite material has excellent thermal conductivity, electrical conductivity and thermal stability, the problems of low thermal conductivity, electrical insulation and the like of phase-change energy storage materials existing in the prior art are solved, and the preparation method is simple, low in cost, good in repeatability and the like.
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Description

technical field

[0001] The invention relates to the technical field of graphene nanocomposite materials, in particular to a method for preparing a hybrid graphene gel / phase-change heat-conducting composite material. Background technique

[0002] At present, the energy problem has become a bottleneck restricting the further improvement of human material and spiritual life. During the phase change process, phase change materials can absorb or release heat from the environment, thereby being able to store and release heat energy, effectively improving the utilization rate of energy. Therefore, in recent years, phase change energy storage materials have gradually become a hot spot in energy utilization and material research. It can be widely used in the fields of solar thermal utilization, building energy saving, thermal management and the like. Organic phase change materials have many advantages such as good phase change temperature adaptability, large phase change latent hea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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