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Method for preparing graphene-based air conditioner filter net by spraying method

A graphene-based, spray-coating technology, applied in the direction of separation methods, chemical instruments and methods, and devices for coating liquids on surfaces, can solve the problems that tiny particles of dust are ineffective, not very ideal, and can only be blocked or simply adsorbed. , to achieve the effect of preventing bacterial growth and good purification effect

Active Publication Date: 2015-04-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used filter materials include aluminum mesh, stainless steel mesh, non-woven fabric, fiber mesh, activated carbon filter, etc. The purification performance of these traditional materials is often not very ideal. invalid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the first step, the graphene obtained by reducing graphite oxide is added to heptane, and 30 ml of dispersion liquid with a concentration of 1 mg / mL is obtained by ultrasonication, and placed on a stirrer to start stirring;

[0017] In the second step, add 3.6g of dimethylsiloxane base (Silicone elastomer base) and 0.36g of dimethylsiloxane curing agent (silicone elastomer curing agent), pour it into a spray bottle after continuous stirring;

[0018] Step 3: Use a spray bottle to evenly spray the obtained graphene dispersion on the cleaned and dried air-conditioning filter, and let it dry naturally at room temperature;

[0019] In the fourth step, the obtained product is put into an oven and heated at 80° C. for 8 hours.

Embodiment 2

[0021] The control method is basically the same as in Example 1, except that graphene is obtained by reducing expanded graphite at high temperature, and the concentration of graphene is adjusted to 5 mg / mL;

Embodiment 3

[0023] The control method is basically the same as in Example 1, except that the graphene concentration is adjusted to 7mg / mL;

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PUM

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Abstract

The invention discloses a method for preparing a graphene-based air conditioner filter net by a spraying method, so that filtering performance of the air conditioner filter net is improved. The method includes the specific steps of firstly, ultrasonically dispersing graphene into a heptane solution; then, adding silicone elastomer bases and corresponding silicone elastomer curing agents into the heptane solution with stirring uniformly, pouring mixed dispersion liquid into a spray bottle, and spraying the mixed dispersion liquid on the air conditioner filter net evenly; finally, heating to enable graphene particles to be better attached to the filter net. The method has the advantages that the air conditioner filter net serves as a carrier and superhigh specific surface and specific electrostatic adsorption capacity of the graphene are utilized, so that smaller particles in air can be blocked off and better purifying effect is achieved; meanwhile, the prepared filter net with super-hydrophobic property is capable of well preventing bacterium breeding.

Description

technical field [0001] The invention relates to a method for preparing a graphene-based air-conditioning filter screen by using a spraying method to purify air. Background technique [0002] The air filter screen is a kind of purification equipment with a concave-convex honeycomb structure, which can be widely used in air filtration and sewage filtration systems. Commonly used filter materials include aluminum mesh, stainless steel mesh, non-woven fabric, fiber mesh, activated carbon filter, etc. The purification performance of these traditional materials is often not very ideal. invalid. Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms with sp2 hybrid orbitals to form a hexagonal honeycomb lattice. It is a two-dimensional material with a thickness of only one carbon atom. It has extremely superior physical and chemical properties such as electricity, magnetism, heat, and optics (Nature ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/24B01D39/00
Inventor 孙立涛毕恒昌孙佳惟万树
Owner SOUTHEAST UNIV
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