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Air filter paper containing carbon nanomaterials and preparation method thereof

A technology of air filter paper and carbon nanomaterials, applied in the direction of filter paper, separation method, filtration separation, etc., can solve the problems of potential safety hazards, easy to fall off powder, great influence on air filtration effect, etc., achieve small air resistance, excellent antibacterial The effect of performance and low cost

Active Publication Date: 2019-11-26
KUNMING NATAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the carbon nanomaterials are arranged too closely, the carbon nanomaterial film will have a very large resistance, so the existence form of the carbon nanomaterials in the air filter layer medium has a great impact on its air filter effect
The application of carbon nanomaterials in air filter materials should also solve another major safety hazard—powder drop, which is easy to fall off after being blown by air several times during use, becoming a new source of pollution

Method used

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  • Air filter paper containing carbon nanomaterials and preparation method thereof
  • Air filter paper containing carbon nanomaterials and preparation method thereof
  • Air filter paper containing carbon nanomaterials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing air filter paper containing carbon nanomaterials includes the following steps:

[0044] (1) After mixing glass wool fibers with a diameter of 0.1~2μm and glass fibers with a diameter of 6.5μm in a mass ratio of 1:1, add acid to adjust the pH to 3, then disperse and disperse, and send to the former for suction to form Wet paper

[0045] (2) Adding the same mass of carbon nanotubes and alcohol ether glycosides with a diameter of 50-100 nm into water for ultrasonic dispersion, and configuring the carbon nanotube material dispersion with a mass fraction of carbon nanotubes of 0.5%;

[0046] (3) Mix the carbon nano-material dispersion and the polyurethane adhesive at a mass ratio of 1:1, add deionized water to prepare a mixed diluent with the total mass fraction of the carbon nanotube dispersion and the polyurethane adhesive of 1% ;

[0047] (4) Apply the mixed diluent (ie sizing) to the molded wet paper by curtain sizing. The side where the mixed diluent is ...

Embodiment 2

[0050] A preparation method of carbon nano-material-containing air filter paper is basically the same as in Example 1, except that the vacuum degree of the sizing process in step (4) is controlled at 30KPa.

[0051] Such as figure 2 As shown, the thickness of the air filter paper containing carbon nanomaterials obtained in this embodiment is 350 μm, and the carbon nanotubes are uniformly distributed throughout the air filter paper containing carbon nanomaterials. The air filter paper containing carbon nanomaterials obtained in this embodiment has a removal rate of greater than 99.999% for particles with a particle size greater than 0.3 μm in the air, and a resistance of only 260 Pa. The particle size of the filter paper that is most easily penetrated in the air is 0.05 to 0.3. The removal rate of μm particles is over 99.9%; at the same time, it has good antibacterial performance, and its antibacterial efficiency is greater than 99.9%.

Embodiment 3

[0053] A preparation method of carbon nano-material-containing air filter paper is basically the same as in Example 1, except that the vacuum degree of the sizing process in step (4) is controlled at 50KPa.

[0054] Such as image 3 As shown, the air filter paper containing carbon nanomaterials obtained in this embodiment has a thickness of 380 μm and has a double-layer structure including a surface layer and a bottom layer. The surface layer is a layer including a sizing surface. The layer is the bottom layer, and the carbon nanotubes are evenly distributed on the bottom layer; the air filter paper containing carbon nanomaterials obtained in this embodiment has a removal rate of more than 99.999% for particles with a particle size greater than 0.3 μm in the air, and the resistance is only 265 Pa. The removal rate of easily penetrating filter paper with a particle size of 0.05-0.3μm is above 99.9%; at the same time, it has good antibacterial performance, and its antibacterial eff...

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Abstract

The invention relates to an air filter paper containing a carbon nanomaterial and a preparation method thereof. The preparation method comprises the steps of: (1) adding a fiber material into water, adding acid to adjust the pH value to 2.5-3.5, then performing dispersion, and sending the product to a molding machine for suction so as to obtain molded wet paper; (2) adding a carbon nanomaterial and alcohol ether glucoside into water and conducting ultrasonic dispersion to obtain a carbon nanomaterial dispersion liquid with a carbon nanomaterial mass fraction of 0.1-1%; (3) mixing the carbon nanomaterial dispersion liquid and a binder, then adding water to prepare a mixed diluent in which the total mass percent of the carbon nanomaterial dispersion liquid and the binder is 0.5-5%; and (4) applying the mixed diluent to the molded wet paper. The air filter paper containing the carbon nanomaterial provided by the invention has evenly distributed carbon nanomaterial and high retention rate,and air filter paper containing the carbon nanomaterial with different carbon nanomaterial distribution can be obtained according to actual production needs.

Description

Technical field [0001] The invention relates to the field of air filter paper, in particular to an air filter paper containing carbon nanomaterials and a preparation method thereof. Background technique [0002] High efficiency filters can effectively intercept particulate pollutants and are an important means to ensure clean air in many areas. High-efficiency filter material is the main component that plays a filtering role, and it is the key to determine the filter accuracy of the air filter. The air filter paper prepared from ultrafine fibers through wet papermaking has excellent performance in the aerosol filtration process, which is double in the market. Favored. [0003] The smaller the fiber diameter of the filter material, the smaller the particle size to remove particles in the air, and the higher the filtration efficiency. Compared with traditional fibers, nanofiber materials exhibit better filtration performance. Carbon nanomaterials have a small nanometer diameter, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H13/24D21H13/40D21H19/14D21H21/08D21H21/14D21H27/08
Inventor 胡庭维刘铸肖辉吴立群朱勇
Owner KUNMING NATAI TECH CO LTD
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