Graphene-based self-temperature-limiting electrothermal slurry and preparation method and application in electric heating floor system thereof

A graphene-based, electric heating floor technology, applied in electric heating systems, heating systems, applications, etc., can solve the problem that the coating range is limited to one side of the base material, the heat conduction function is not fully utilized, and the heat cannot be transferred to the floor. Surface and other problems, to achieve the effects of excellent mechanical properties, good electrical conductivity and long service life

Inactive Publication Date: 2019-04-05
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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Problems solved by technology

[0005] Existing graphene or graphite electrothermal paste and its electrothermal application, such as Chinese patents CN 205279216 U, CN107178819 A, CN 107882294 A, etc., although graphene is used to coat the base material as an electrothermal application, its coating range is only Limited to one side of the substrate material, only using graphene’s resistance heating function, fa

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  • Graphene-based self-temperature-limiting electrothermal slurry and preparation method and application in electric heating floor system thereof
  • Graphene-based self-temperature-limiting electrothermal slurry and preparation method and application in electric heating floor system thereof

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[0064] Example 1:

[0065] The graphene material is prepared by the electrochemical swelling graphite electrode method. The thickness of the graphene is 1-3 nm, the lateral size is about 10-20 μm, and the crystal structure is complete. See the attachment for details. figure 1 a, 1b, graphene micro-sheets are soft and transparent, the crystal form is well maintained, and the electrical and heat transmission performance is excellent.

[0066] Take 1 part by mass of graphene powder dispersed in 10 parts by mass of water, mechanically stir to form a dispersion, add 10 parts by mass of aqueous acrylic resin emulsion (resin), 0.2 parts by mass of carbon nanotubes, 0.3 parts by mass of conductive carbon black, 1 part by mass Barium carbonate-based ceramic PTC powder (self-limiting temperature filler), 0.1 parts by mass of titanium dioxide (functional filler), 0.1 parts by mass of sodium dodecylbenzene sulfonate (dispersant), 0.05 parts by mass of polyether modified polydisiloxane Alkane (...

Example Embodiment

[0068] Example 2

[0069] The graphene powder material is prepared by the electrochemical swelling graphite electrode method. The thickness of the graphene is 3-5 nm, the lateral size is about 30-50 μm, the crystal structure is complete, the graphene microplates are soft and transparent, and the crystal shape is maintained well.

[0070] Take 10 parts by mass of graphene powder dispersed in 200 parts by mass of water, mechanically stir to form a dispersion, add 50 parts by mass of aqueous acrylic resin emulsion (resin), 2 parts by mass of carbon nanotubes, 3 parts by mass of conductive carbon black, 10 parts by mass Barium carbonate-based ceramic PTC powder (self-limiting temperature filler), 5 parts by mass without photocatalyst (functional filler), 0.3 parts by mass of sodium dodecylbenzene sulfonate (dispersant), 0.2 parts by mass of polyether modified polydisiloxane Oxane (defoaming and leveling agent), stirred for 3 hours, sanded, and finally sieved through 400 meshes to obtai...

Example Embodiment

[0072] Example 3

[0073] The graphene powder material is prepared by the electrochemical swelling graphite electrode method. The thickness of the graphene is 1-5 nm, the lateral size is about 50-100 μm, the crystal structure is complete, the graphene microplates are soft and transparent, and the crystal form is maintained well.

[0074] Take 20 parts by mass of graphene powder ultrasonically dispersed in 500 parts by mass of ethanol to form a dispersion, add 50 parts by mass of aqueous polyurethane resin emulsion (resin), 3 parts by mass of carbon nanotubes, 5 parts by mass of conductive carbon black, 20 parts by mass Barium carbonate-based ceramic PTC powder (self-limiting temperature filler), 1 part by mass of magnesium hydroxide (functional filler), 0.5 part by mass of sodium dodecylbenzene sulfonate (dispersant), 0.5 part by mass of polyether modified polyether Siloxane (defoaming leveling agent), stirred for 3 hours, sanded, and finally sieved through 300 meshes to obtain hom...

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Abstract

The invention discloses a graphene-based self-temperature-limiting electrothermal slurry and a preparation method and application in electric heating floor system thereof. The electrothermal slurry isprepared by mixing a graphene dispersion liquid, resin, an electrothermal filler, a PTC self-temperature-limiting filler, a formaldehyde-removing functional filler and various additives to prepare ahomogeneous graphene electrothermal multifunctional slurry. After treatment is carried out on the surfaces of a wood substrate, a pure graphene slurry is coated on the substrate to improve the thermalconductivity of each surface of the substrate; the electrothermal multifunctional slurry is combined with the treated substrate; and after drying, conductive circuits, a protective layer, a thermal insulation layer and a temperature control system are laid. . The invention has the advantages of self-temperature-limiting of a heat-generating layer, a formaldehyde removing function, high thermal conductivity of the substrate, a simple manufacturing process, being environment-friendly, suitability for large-scale production, etc.

Description

technical field [0001] The invention relates to a graphene-based self-limiting temperature electric heating slurry, a preparation method thereof and an application in an electric heating floor system, belonging to the field of electric heating materials and applications. Background technique [0002] Environmental pollution issues such as "smog" have attracted the attention of the whole society. Air pollution caused by traditional coal burning has also become one of the main risk factors affecting public health in China, causing hundreds of billions of health and economic losses and disease burdens to my country every year. . my country is the second largest electricity consumer in the world, with the largest installed capacity in the world. Promoting the use of electric heating instead of coal-fired heating can reduce pollutant emissions. The electric heating floor is a composite floor that can generate heat after being energized. It is made of conductive special electric ...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/20F24D13/02
CPCF24D13/024H05B3/145H05B3/20H05B2203/017
Inventor 王俊中王聪伟刘欣田
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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