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Atmospheric particulate filtering material

A technology of atmospheric particles and filter materials, applied in the field of materials, can solve problems such as user discomfort and poor breathing, and achieve the effect of comfortable touch and strong adsorption capacity

Active Publication Date: 2019-01-18
ANHUI SANLIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for masks, too thick fabric layer will bring discomfort to the user, and fabric with small aperture will also make breathing difficult

Method used

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  • Atmospheric particulate filtering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Activation of wood fiber: heat wood fiber (30-40mm in length, Heilongjiang coniferous wood fiber) to 600°C under nitrogen protection, activate wood fiber with a water vapor flow rate of 4g / min for 60min, and keep it in a nitrogen atmosphere Let cool and set aside.

[0038] see figure 1 , the activated wood fiber surface pore diameter is between 20-20nm.

[0039] 2) Take polypropylene fiber (3-20mm long fiber), add 20g into 4L water, and add 4g, 8g, 12g, 15g chitosan respectively, form a uniformly dispersed fiber slurry suspension after stirring, add 40g Activated wood fiber, and fully stir evenly.

[0040] 3) Use a mesh sieve to sieve the organic fibers in the mixed suspension, add 7g of sepiolite powder, and mix well.

[0041] 4) After stirring evenly, remove the fiber attached to the sepiolite powder and spread it flat, and let it dry naturally at room temperature for 24 hours until the humidity is about 10%. About 3-4mm.

[0042] Chitosan can inhibit bacteria...

Embodiment 2

[0050] 1) the activation of wood fiber is with embodiment 1;

[0051] 2) Add 20g of polyester fiber (15-50mm in length) into 4L of water, add 8g of chitosan, form a uniformly dispersed fiber slurry suspension after stirring, add 40g of activated wood fiber, and fully stir uniform.

[0052] 3) Use a grid sieve to sieve the organic fibers in the mixed suspension, add 7g of sepiolite powder, and mix well.

[0053] 4) After stirring evenly, take out the fibers attached with sepiolite powder, smooth them out, and let them dry naturally at room temperature for 24 hours until the humidity is about 10%. Put the materials on an adhesive film (polyester adhesive film, aperture 3μm), the thickness is about 4-5mm.

[0054] 5) Press under a pressure of 10 MPa to form a sheet with a thickness of 1 mm.

[0055] The interception efficiency η of atmospheric particulate matter is 88.2%.

Embodiment 3

[0057] 1) the activation of wood fiber is with embodiment 1

[0058] 2) Take 10g of polyester fiber and 10g of polyester fiber, add them to 4L of water, and add 8g of chitosan to form a uniformly dispersed fiber pulp suspension after stirring, add 40g of activated wood fiber and fully stir evenly.

[0059] 3) Use a grid sieve to sieve the organic fibers in the mixed suspension, add 7g of sepiolite powder, and mix well.

[0060] 4) After stirring evenly, take out the fiber attached with sepiolite powder and spread it flat, and dry it naturally at room temperature for 24 hours until the humidity is about 10%. Put the material on the adhesive film with a thickness of about 4-5mm .

[0061] 5) Press under a pressure of 10 MPa to form a sheet with a thickness of 1 mm.

[0062] The interception efficiency η of atmospheric particulate matter is 88.1%.

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Abstract

The invention provides an atmospheric particulate filtering material. The atmospheric particulate filtering material comprises fiber and adsorbent particles attached to the fiber, wherein the fiber isa combination of at least one of polypropylene fiber and polyester fiber and at least one of wood fiber and seaweed fiber; the adsorbent particles include at least one of a sepiolite powder and activated carbon particles; the mass of the adsorbent particles is 5-20% of that of the fiber. The invention further provides a preparation method and the application of the atmospheric particulate filtering material. With the sepiolite powder and / or the activated carbon particles with moisturizing performance as an adsorbent active material, the adsorbent active material is compounded and reprocessedwith the combination of at least one of the polypropylene fiber and the polyester fiber and at least one of the wood fiber and the seaweed fiber to form the fiber filtering material with certain thickness, and the filtering material has a strong function of removing PM2.5 particulates in air and has good gas permeability.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a filter material containing fibers and its preparation and application. Background technique [0002] Atmospheric particulate matter (Atmospheric Particulate Matters) is a general term for various solid and liquid particulate matter existing in the atmosphere. The aerodynamic diameter of fine particles in atmospheric particles is ≤2.5μm (ie PM2.5), which are particles that can enter the alveoli of the human body. Preventing such particles from entering the respiratory tract is an important procedure for maintaining health. [0003] Masks that isolate polluted air mainly rely on the fiber fabric in the mask material to block, filter and purify suspended particles in the air through multiple layers of fibers. The way that the fiber filters the particulate matter in the air includes sedimentation, interception, diffusion, electrostatic effect, etc. The thicker the fiber layer...

Claims

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Application Information

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IPC IPC(8): B01D39/02A62B23/02
CPCA62B23/02B01D39/02B01D2239/0216B01D2239/0407B01D2239/10
Inventor 朱守金陶灵平孙权海
Owner ANHUI SANLIAN UNIV
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