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MXene/graphene composite heat-conducting fluid and preparation method and application thereof

A graphene composite, heat-conducting fluid technology, applied in chemical instruments and methods, materials for heat exchange, etc., can solve the problems of low thermal conductivity of water, low heat transfer efficiency, affecting the efficiency of temperature control and crack prevention, and achieve good pumping. Good performance and dispersibility

Active Publication Date: 2020-04-28
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the temperature control and anti-cracking measures of large-volume concrete are mainly to reduce the temperature rise and temperature difference, thereby controlling the generation of temperature cracks. The main measure is to arrange cooling water pipes in the concrete. The heat transfer medium used in traditional concrete cooling water pipes is Water, but the thermal conductivity of water is low, which makes the heat transfer efficiency of water as a cooling liquid low, which affects the efficiency of temperature control and anti-cracking

Method used

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  • MXene/graphene composite heat-conducting fluid and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0015] 0.1667g Ti 3 C 2 Tx, 0.3333g graphene and 0.5g sodium dodecylbenzenesulfonate were added to 49g water, stirred at a stirring rate of 600rpm for 30min and mixed evenly, and then ultrasonically dispersed for 60min to obtain uniformly dispersed and stable MXene / graphene heat transfer fluid. In the MXene heat-conducting fluid, MXene / graphene is 1%, MXene:graphene=0.5:1, sodium dodecylbenzenesulfonate is 1%, and water is 98%. Pass the MXene / graphene heat transfer fluid as the heat transfer medium into the cooling water pipe in the concrete for heat dissipation.

Embodiment 2

[0017] 0.1667g Ti 3 C 2 Tx, 0.3333g graphene and 0.5g hexadecyltrimethylammonium bromide were added to 49g water, stirred at a stirring rate of 600rpm for 30min, mixed evenly, and then ultrasonically dispersed for 60min to obtain uniformly dispersed and stable MXene / Graphene heat transfer fluid. In the MXene heat-conducting fluid, MXene / graphene is 1%, MXene:graphene=0.5:1, cetyltrimethylammonium bromide is 1%, and water is 98%. The MXene / graphene heat transfer fluid is used as a heat transfer medium to pass into the cooling water pipe in the concrete for heat dissipation.

Embodiment 3

[0019] 0.25g Ti 3 C 2 Tx, 0.25g graphene and 0.5g sodium dodecylbenzene sulfonate were added to 49g water, stirred at a stirring rate of 600rpm for 30min, mixed evenly, and then ultrasonically dispersed for 60min to obtain uniformly dispersed and stable MXene / graphene heat transfer fluid. In the MXene heat-conducting fluid, MXene / graphene is 1%, MXene:graphene=1:1, sodium dodecylbenzenesulfonate is 1%, and water is 98%. Pass the MXene / graphene heat transfer fluid as the heat transfer medium into the cooling water pipe in the concrete for heat dissipation.

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Abstract

The invention discloses an MXene / graphene composite heat-conducting fluid and a preparation method and application thereof. The heat-conducting fluid is composed of 0.01%-1% of MXene / graphene, 0.01%-1% of a dispersing agent and 98%-99.8% of water, wherein the mass ratio of MXene to graphene in the MXene / graphene material is 0.1: 1-1: 1. The preparation method of the heat-conducting fluid comprisesthe following steps: (1) adding MXene, graphene and the dispersing agent into water, and uniformly stirring; and (2) carrying out ultrasonic dispersion on the uniformly mixed raw materials to obtainthe MXene / graphene heat-conducting fluid. The heat-conducting fluid is used as a temperature-control anti-cracking heat-conducting medium for mass concrete. The heat conduction coefficient of the heat-conducting fluid is as high as 0.754 W / m.K and is increased by 25.9% in comparison with that of water.

Description

technical field [0001] The present invention relates to a heat-conducting fluid, its preparation method and application, more specifically, to an MXene / graphene composite heat-conducting fluid, its preparation method and its application. Background technique [0002] During the construction period of mass concrete, more heat is generated due to the hydration of cement, which makes the internal temperature of the concrete rise sharply. Due to the low thermal conductivity of concrete, the temperature difference between the inside and outside of the concrete structure is large, and because the internal and external structures of the concrete The temperature difference will lead to tensile stress inside the concrete. When the tensile stress exceeds the tensile strength of the concrete, it will cause more temperature cracks in the concrete structure, which will affect the bearing capacity, waterproof and service life of the concrete structure. Therefore, large-volume concrete nee...

Claims

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Application Information

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IPC IPC(8): C09K5/10
CPCC09K5/10
Inventor 蒋林华靳卫准陈磊袁浩寰张晓婕林正祥崔晓辉
Owner HOHAI UNIV
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