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Composite graphene underfloor heating slurry and preparation method thereof

A composite graphene and graphene technology, applied in the field of floor heating slurry, can solve the problems of increased cost, power attenuation, short service life, etc., and achieve the effects of uniform resistance, high conductivity, and improved resistance uniformity

Active Publication Date: 2019-05-14
浙江格来菲科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the floor heating electric heating film prepared by printing is widely used in heating in the north; the ink used in the traditional floor heating film is ordinary carbon crystal electric heating ink, and the carbon crystal floor heating on the market is a modified and purified carbon particle heating product. After the heat treatment, the ball milling treatment is carried out to make the microcrystalline particles, and then the far-infrared emitter is added, and the heating element is synthesized by a special process. Thermal energy is generated by the collision and friction between carbon molecules, and a large amount of infrared radiation is generated, and the conversion rate of electric energy and thermal energy is over 98%. However, the electrothermal film made of existing carbon crystal electrothermal ink has insufficient power attenuation Therefore, the service life of membrane products is short and the cost of later maintenance is increased.

Method used

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  • Composite graphene underfloor heating slurry and preparation method thereof

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Effect test

Embodiment 1

[0029] like figure 1 Shown, the preparation method of the composite graphene floor heating slurry of the present embodiment comprises the following steps:

[0030] 1. Preparation of preoxidized carbon fiber short fibers and carbon microspheres

[0031] (1) The pre-oxidized carbon fiber precursors (2kg) with a specification of 3K are put into a disc extrusion fiber cutter (3kW power), and the pre-oxidized carbon fiber precursors are cut into short fibers of 3mm length.

[0032] (2) Preparation of carbon microspheres by medium-temperature thermal polymerization method: take medium-temperature coal tar pitch, put it into a pressurized and sealed reaction kettle, the pressure is 1.0MPa, the temperature rises to 350°C, the stirring speed is 400r / min, and the time is 4 hours to obtain carbon microspheres. The mixture of microspheres is separated and extracted by the organic solvent toluene and n-hexane, and the carbon microspheres are obtained by extraction; drying and washing with...

Embodiment 2

[0038] The difference between this embodiment and the first embodiment lies in that the particle diameters of the carbon fiber precursor powder and the carbon microspheres are different.

[0039] The preparation method of the composite graphene floor heating slurry of the present embodiment may further comprise the steps:

[0040] 1. Preparation of preoxidized carbon fiber short fibers and carbon microspheres

[0041] (1) The pre-oxidized carbon fiber precursors (2kg) with a specification of 3K are put into a disc extrusion fiber cutter (3kW power), and the pre-oxidized carbon fiber precursors are cut into short fibers of 3mm length.

[0042] (2) Preparation of carbon microspheres by medium-temperature thermal polymerization method: take medium-temperature coal tar pitch, put it into a pressurized and sealed reactor, the pressure is 1.0MPa, the temperature rises to 390°C, the stirring speed is 500r / min, and the time is 4 hours to obtain carbon microspheres. The mixture of mic...

Embodiment 3

[0049] The difference between this embodiment and the first embodiment lies in that the mass ratio of carbon fiber precursor powder to carbon microspheres is different.

[0050] Specifically, the preparation method of the composite graphene floor heating slurry of the present embodiment comprises the following steps:

[0051] 1. Preparation of preoxidized carbon fiber short fibers and carbon microspheres

[0052] (1) The pre-oxidized carbon fiber precursor (5kg) with a specification of 3K is put into a disc extrusion fiber cutter (3kW power), and the pre-oxidized carbon fiber precursor is cut into short fibers of 3mm length.

[0053] (2) Preparation of carbon microspheres by medium-temperature thermal polymerization method: take medium-temperature coal tar pitch, put it into a pressurized and sealed reaction kettle, the pressure is 1.0MPa, the temperature rises to 350°C, the stirring speed is 400r / min, and the time is 4 hours to obtain carbon microspheres. The mixture of micr...

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Abstract

The invention belongs to the technical field of the underfloor heating slurry, and specifically relates to a composite graphene underfloor heating slurry and a preparation method thereof. The composite graphene underfloor heating slurry is prepared from the following raw materials in parts by weight: 0.1-30 parts of carbon fiber / graphene / carbon microsphere powder, 0.1-70 parts of a matrix bindingmaterial, 0.1-5 parts of a dispersing agent, 0.1-5 parts of a flatting agent, 0.1-5 parts of a precipitator, and 0.1-1 part of a defoaming agent. The composite graphene underfloor heating slurry prepared by adopting the carbon fiber / graphene / carbon microsphere powder has characteristics of good adhesive force, high conductivity, water resistance and alcohol resistance, and has excellent conductiveuniformity, and attenuation resistance.

Description

technical field [0001] The invention belongs to the technical field of floor heating slurry, and in particular relates to a composite graphene floor heating slurry and a preparation method thereof. Background technique [0002] With the vigorous promotion of winter heating policies, more and more researchers are focusing on the development and application of carbon material conductive ink printing electric heating products, which is based on the excellent electrical conductivity and heat transfer properties of carbon materials. Among them, the floor heating electric heating film prepared by printing is widely used in heating in the north; the ink used in the traditional floor heating film is ordinary carbon crystal electric heating ink, and the carbon crystal floor heating on the market is a modified and purified carbon particle heating product. After the heat treatment, the ball milling treatment is carried out to make the microcrystalline particles, and then the far-infrar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/102C09D11/03H05B3/14
Inventor 李晓红
Owner 浙江格来菲科技有限公司
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