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Nanofiber composite air filter paper and production method thereof

A nanofiber, air filter paper technology, applied in the post-treatment modification of cellulose pulp, filter paper, special paper, etc., can solve the problems of large coating amount of resin layer, affecting the air permeability, filtration efficiency, and thickness of air filter paper, etc. To achieve the effect of high air permeability and filtration efficiency, high strength and improving filtration efficiency

Active Publication Date: 2016-10-12
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also defects: since there are resin layers on both sides of the air filter paper, and the coating amount of the resin layer is relatively large, resulting in a thicker thickness, which seriously affects the air permeability and filtration efficiency of the air filter paper.

Method used

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  • Nanofiber composite air filter paper and production method thereof
  • Nanofiber composite air filter paper and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, a nanofiber composite air filter paper includes an upper filter layer 1, a lower filter layer 2 and a nanocellulose composite coating 3 coated on the upper surface of the upper filter layer.

[0033] Wherein, the thickness of the upper filter layer is 0.11-0.12mm, and the thickness of the lower filter layer is 0.18-0.19mm.

[0034] A preparation method of nanofiber composite air filter paper, carried out according to the following steps:

[0035] a. Preparation of the base paper for the upper filter layer: 30 parts of mercerized fiber, 15 parts of sisal fiber, and 15 parts of horn gourd fiber are mixed and beaten, the concentration of the slurry is 2.2wt%, and the degree of beating until the slurry is 13° After SR, refining is carried out until the degree of beating is 18°SR, and slurry a is obtained; 1 part of ethylene glycol diglycidyl ether is added to the slurry a, and the slurry b is obtained after stirring evenly; Add 0.3 parts of sodium ...

Embodiment 2

[0042] A nanofiber composite air filter paper comprises an upper filter layer, a lower filter layer and a nanocellulose composite coating on the upper surface of the upper filter layer.

[0043] Wherein, the thickness of the upper filter layer is 0.10-0.11 mm, and the thickness of the lower filter layer is 0.18-0.19 mm.

[0044] A preparation method of nanofiber composite air filter paper, carried out according to the following steps:

[0045] a. Preparation of the base paper for the upper filter layer: 20 parts of mercerized fiber, 10 parts of sisal fiber, and 10 parts of horn gourd fiber are mixed and beaten, the concentration of the slurry is 1.9wt%, and the degree of beating until the slurry is 12° After SR, refine the pulp again until the degree of beating is 16°SR to obtain slurry a; add 0.5 parts of ethylene glycol diglycidyl ether to the slurry a, and stir evenly to obtain slurry b; Add 0.2 parts of sodium hexametaphosphate to the slurry b, add water to adjust the con...

Embodiment 3

[0052] A nanofiber composite air filter paper comprises an upper filter layer, a lower filter layer and a nanocellulose composite coating on the upper surface of the upper filter layer.

[0053] Wherein, the thickness of the upper filter layer is 0.14-0.15mm, and the thickness of the lower filter layer is 0.19-0.20mm.

[0054] A preparation method of nanofiber composite air filter paper, carried out according to the following steps:

[0055] a. Preparation of the base paper for the upper filter layer: 40 parts of mercerized fiber, 20 parts of sisal fiber, and 20 parts of horn gourd fiber are mixed and beaten, the concentration of the slurry is 2.5wt%, and the degree of beating until the slurry is 14° After SR, refine the pulp again until the degree of beating is 20°SR to obtain slurry a; add 1.5 parts of ethylene glycol diglycidyl ether to the slurry a, and stir evenly to obtain slurry b; Add 0.4 parts of sodium hexametaphosphate to the slurry b, add water to adjust the conce...

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Abstract

The invention discloses a nanofiber composite air filter paper and a production method thereof. The nanofiber composite air filter paper comprises an upper filter layer, a lower filter layer and a nanocellulose composite coating layer arranged on the upper surface of the upper filter layer; a composite slurry comprises nanocellulose, titanium dioxide aerogel nanoparticles, phenolic resin, dimethylformamide and water; raw materials of the upper filter layer comprise mercerized fibers, sisal fiber, akund fibers, ethylene glycol diglycidyl ether, a dispersant and water; and raw materials of the lower filter layer comprise broadleaf wood fibers, titanium dioxide aerogel particles, beta-cyclodextrin, carboxymethylcellulose, ethylene glycol diglycidyl ether and water. The filter layer of the nanofiber composite air filter paper is provided with a high-air permeability and good-water resistance nanofiber composite coating layer, so the water resistance, the weather resistance and the bursting strength of the filter paper are improved on the premise of guaranteeing the air permeability and the filtering efficiency of the filter paper.

Description

technical field [0001] The invention relates to the technical field of filter paper preparation, in particular to a nanofiber composite air filter paper and a preparation method thereof. Background technique [0002] Air filter paper is a key component of the air filter, which determines the performance of the air filter. Air filter paper usually includes a paper filter layer made of ordinary wood pulp as the main component. Because ordinary wood pulp fibers are fine and compact, the air filter paper made generally has high compactness and high filtration efficiency. Low, short life and other shortcomings, its filtration efficiency is generally lower than 90%, and paper air filter paper also generally has the disadvantages of poor curing, water resistance, and weather resistance. When the air humidity changes, the paper is prone to deformation, and then affect the filtering effect. [0003] At present, there is also a filter paper coated with a resin layer on the surface o...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21H11/20D21H17/05D21H17/06D21H17/66D21H17/67D21H19/12D21H27/08D21H27/30B32B29/00
CPCB32B29/005B32B2250/26D21H11/12D21H11/20D21H17/05D21H17/06D21H17/66D21H17/675D21H19/12D21H27/08D21H27/30
Inventor 吴安波
Owner 杭州特种纸业有限公司
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