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A graphene electric heating film loaded with cobalt-doped manganese oxide nanoparticles and its preparation method

A nanoparticle and electric heating film technology, which is applied in the direction of electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of film layer performance influence, uneven distribution of graphene and nanoparticles, etc., and achieve good dispersion and good durability. Chemically corrosive, not easy to agglomerate

Active Publication Date: 2021-05-28
上海九明谷医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding nano-oxides directly to the slurry is also prone to agglomeration
At the same time, it is easy to cause uneven distribution of graphene and nanoparticles in the film layer, which will affect the performance of the film layer.

Method used

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  • A graphene electric heating film loaded with cobalt-doped manganese oxide nanoparticles and its preparation method
  • A graphene electric heating film loaded with cobalt-doped manganese oxide nanoparticles and its preparation method
  • A graphene electric heating film loaded with cobalt-doped manganese oxide nanoparticles and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of graphene loaded with cobalt-doped manganese oxide nanoparticles. Put the graphene into the mixed solvent of DMF and water for ultrasonication for 1 hour, put in the weighed cobalt acetate and manganese acetate, stir at room temperature for 5 minutes, then pour the mixture into a water heating tank, and put it in a 120-degree oven for reaction After cooling for 2 hours, deionized water and alcohol were carried out three times for centrifugal cleaning, and then the sample was dried in a 60-degree oven, and manually ground and dispersed to obtain graphene powder loaded with cobalt-doped manganese oxide nanoparticles. Wherein the volume ratio of DMF and water is 7:3. The concentration of cobalt oxide in the solvent is 0.05mol / L, the concentration of manganese acetate in the solvent is 0.3mol / L, and the concentration of graphene in the solvent is 1g / L. figure 1The SEM image of the cobalt-doped manganese oxide nanoparticles supported on the surface of graphene...

Embodiment 2

[0049] Preparation of graphene loaded with cobalt-doped manganese oxide nanoparticles. Put the graphene into the mixed solvent of DMF and water for ultrasonication for 1 hour, put in the weighed cobalt acetate and manganese acetate, stir at room temperature for 5 minutes, then pour the mixture into a water heating tank, and put it in a 120-degree oven for reaction After cooling for 2 hours, deionized water and alcohol were carried out three times for centrifugal cleaning, and then the sample was dried in a 60-degree oven, and manually ground and dispersed to obtain graphene loaded with cobalt-doped manganese oxide nanoparticles. Wherein the volume ratio of DMF and water is 8:2. The concentration of cobalt oxide in the solvent is 0.1mol / L, the concentration of manganese acetate in the solvent is 0.35mol / L, and the concentration of graphene in the solvent is 1.5g / L.

[0050] Prepare the heat-generating film slurry. Weigh 5 parts by weight of graphene loaded with cobalt-doped m...

Embodiment 3

[0054] Preparation of graphene loaded with cobalt-doped manganese oxide nanoparticles. Put the graphene into the mixed solvent of DMF and water for ultrasonication for 1 hour, put in the weighed cobalt acetate and manganese acetate, stir at room temperature for 5 minutes, then pour the mixture into a water heating tank, and put it in a 120-degree oven for reaction After cooling for 2 hours, deionized water and alcohol were carried out three times for centrifugal cleaning, and then the sample was dried in a 60-degree oven, and manually ground and dispersed to obtain graphene loaded with cobalt-doped manganese oxide nanoparticles. Wherein the volume ratio of DMF and water is 9:1. The concentration of cobalt acetate in the solvent is 0.1mol / L, the concentration of manganese acetate in the solvent is 0.4mol / L, and the concentration of graphene in the solvent is 2g / L.

[0055] Prepare the heat-generating film slurry. Weigh 5 parts by weight of graphene loaded with cobalt-doped ma...

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Abstract

The invention discloses a graphene electric heating film loaded with cobalt-doped manganese oxide nanoparticles and a preparation method thereof. The graphene loaded with cobalt-doped manganese oxide nanoparticles is prepared by a hydrothermal method. Coated with nano manganese oxide nanoparticles, it is not easy to agglomerate and has good dispersion. The electric heating film formed by the graphene loaded with cobalt-doped nano-manganese oxide increases the interface scattering and improves the heating efficiency due to the existence of the interface between the cobalt-doped nano-manganese oxide particles and the graphene. At the same time, manganese oxide is doped with cobalt to improve the far-infrared emission performance. Therefore, the heat generated is easier to radiate into space, has a good far-infrared heating function, and improves the heat transmission speed. The invention improves the dispersibility of graphene and further improves the heating efficiency of the electric heating film.

Description

technical field [0001] The invention belongs to the technical field of electric heating materials, and specifically relates to a graphene electric heating film loaded with cobalt-doped manganese oxide nanoparticles and a preparation method thereof, in particular, loading cobalt-doped manganese oxide nanoparticles on the surface of graphene as a film-forming filler , has good heat generation performance and far-infrared radiation performance. Background technique [0002] Graphene floor heating is a method of converting electrical energy into heat energy. It has high utilization rate of electric heat, quietness, and long service life. It has better performance than electric heating wire heating and air conditioning heating. It is an environmentally friendly heating method. However, there is still room for improvement in graphene floor heating. The use of chemical methods to prepare graphene oxide is relatively expensive, which is not conducive to a large number of applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/14H05B3/20
CPCH05B3/14H05B3/141H05B3/20
Inventor 徐军明赵炜翔章林娟杨成明李苗
Owner 上海九明谷医疗科技有限公司
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