Graphene-containing heat-insulating energy-saving composite powder, and preparation method and application thereof

A composite powder, graphene technology, applied in metal processing equipment, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as poor infrared absorption or reflection effect

Inactive Publication Date: 2017-11-28
广东华材实业股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a graphene-containing heat-insulating and energy-saving composite powder and its preparation method and application in view of the problem that the current heat-insulating and energy-saving powder has poor absorption or reflection effect on infrared rays

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  • Graphene-containing heat-insulating energy-saving composite powder, and preparation method and application thereof
  • Graphene-containing heat-insulating energy-saving composite powder, and preparation method and application thereof

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preparation example Construction

[0055] see figure 2 , the preparation method of the graphene-containing heat-insulating and energy-saving composite powder of an embodiment, comprises the following steps:

[0056] S110, dispersing the graphene in the metal salt solution.

[0057] In one of the embodiments, the metal salt solution is selected from AuCl 3 , AgNO 3 , AgCl, PtCl 4 , PtCl 2 、CuSO 4 , CuCl 2 , Al(NO 3 ) 3 and AlCl 3 at least one of the

[0058] In one embodiment, the concentration of the metal salt solution is 0.001-0.1 mol / L.

[0059] In one embodiment, the molar ratio of graphene to metal salt is 1:10˜10:1.

[0060] In one embodiment, the graphene is dispersed in the metal salt solution by ultrasonic and stirring. The power of ultrasonic dispersion is 20Hz~50Hz. The stirring speed is 200r / min~2000r / min. The time for ultrasonic dispersion and stirring is 10min to 120min.

[0061] S120, and then disperse the infrared highly reflective particles in the metal salt solution to obtain a...

Embodiment 1

[0080] (1) Weigh 4L of AuCl 3 solution, where AuCl 3 The concentration of the solution is 0.01mol / L; 5g of graphene is added thereto, and the graphene is dispersed uniformly by ultrasonic and stirring. Among them, the surface size of graphene is 1μm, the thickness of graphene is 0.5nm, and the specific surface area of ​​graphene is 10m 2 / g. The power of ultrasonic dispersion is 50Hz, the rotation speed of stirring is 200r / min, and the time of ultrasonic dispersion and stirring is 60min.

[0081] (2) Add 90 g of infrared high-reflective particles ITO, and disperse the infrared high-reflective particles evenly by means of ultrasonic and stirring to obtain a mixed solution. The power of ultrasonic dispersion is 50Hz, the rotation speed of stirring is 200r / min, and the time of ultrasonic dispersion and stirring is 60min.

[0082] (3) Add 0.25 g of sodium hydroxide, 0.25 g of methanol, 0.25 g of sodium citrate and 0.25 g of sodium phosphite to the mixed liquid in sequence, and...

Embodiment 2

[0085] (1) Weigh 3L of AgNO 3 solution, where AgNO 3 The concentration of the solution is 0.05mol / L; 10g of graphene is added thereto, and the graphene is uniformly dispersed by ultrasonic and stirring. Among them, the surface size of graphene is 100μm, the thickness of graphene is 50nm, and the specific surface area of ​​graphene is 1000m 2 / g. The power of ultrasonic dispersion is 20Hz, the rotational speed of stirring is 2000r / min, and the time of ultrasonic dispersion and stirring is 90min.

[0086] (2) 80 g of infrared high-reflective particles ATO was added, and the infrared high-reflective particles were uniformly dispersed by means of ultrasonication and stirring to obtain a mixed solution. The power of ultrasonic dispersion is 20Hz, the rotational speed of stirring is 2000r / min, and the time of ultrasonic dispersion and stirring is 90min.

[0087] (3) Add 0.4 g of sodium carbonate, 0.4 g of 2,2-bipyridine, 0.04 g of triethanolamine and 0.25 g of formaldehyde to th...

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Abstract

The invention relates to graphene-containing heat-insulating energy-saving composite powder, and a preparation method and application thereof. The graphene-containing heat-insulating energy-saving composite powder comprises nuclear shell particles and graphene dispersing among the nuclear shell particles. The nuclear shell particles comprise infrared high-reflectivity particles and metal. The metal covers the infrared high-reflectivity particles to form metal shells. The mass ratio of the infrared high-reflectivity particles, the metal to the graphene is (70-98):(1-20):(1-10). The graphene-containing heat-insulating energy-saving composite powder has the advantages that high electric conductivity of the graphene-containing heat-insulating energy-saving composite powder can be realized, and electric transmission ability and infrared-ray reflection ability of the composite powder can be improved; total reflection, not normal diffuse reflection, of an electricity-conducting network, formed by the infrared high-reflectivity particles, the metal shell and the graphene, to infrared rays can be realized, absorption and transmission of base materials to the infrared rays can be reduced remarkably, and accordingly, the objectives of temperature rise reduction and energy conservation are achieved.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a heat-insulating and energy-saving composite powder containing graphene, a preparation method and application thereof. Background technique [0002] Due to the increasing depletion of global resources, energy conservation and emission reduction has become the current top priority for all countries. It is estimated that building energy consumption accounts for more than 1 / 3 of the total energy consumption in society. Therefore, building energy conservation is the key to reducing energy consumption. Since a large part of building energy consumption is used for air conditioning, and more than half of the energy consumption of air conditioning is energy loss through the heat exchange between windows and the outside world, so by promoting energy saving in buildings and developing energy-saving glass, it is expected to significantly reduce greenhouse gas emissions and e...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/24B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/17B22F1/054
Inventor 戴雷唐子奉王亚文唐知桥冯强郑剑雄袁想平
Owner 广东华材实业股份有限公司
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