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Electrostatic air filter paper and preparation method thereof

An air filter paper and electrostatic technology, applied in the field of filter paper, can solve the problems of unsatisfactory filtration performance and high price (cost), and achieve the effects of improving paper quality, long service life, and reducing production costs

Active Publication Date: 2017-01-04
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional air filter materials either have unsatisfactory filtration performance or are too expensive (cost)

Method used

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  • Electrostatic air filter paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Beating: 50 parts of polypropylene / polyester fiber composite fibers with a diameter of 5um were beaten using a Volt type beater, and the Canadian freeness of the slurry was controlled to be 100;

[0029] 2) Dispersion: use a high shear disperser to disperse 20 parts of alkali-free glass fibers with a diameter of 0.2 μm;

[0030] 3) Slurry preparation: import the slurry obtained in steps 1) and 2) into the slurry preparation tank, and evenly add 5 parts of modified nanocellulose with a diameter of 3nm and 5 parts of fluorocarbon water repellent, wherein the modified nano Cellulose is obtained by hydrophobic modification of nanocellulose, and the degree of substitution of hydrophobic groups is 0.10;

[0031] 4) Molding: The mixed slurry obtained in step 3) is wet-molded through a paper sample extractor, and the quantitative control is 40g / m 2 ;

[0032] 5) Hot pressing: hot pressing the paper sample obtained in step 4) through a flat vulcanizing machine, the hot pres...

Embodiment 2

[0038] 1) beating: use a volt type beating machine to beat 60 parts of polypropylene / polyester fiber composite fibers with a diameter of 15um, and control the Canadian freeness of the slurry to be 200;

[0039] 2) Dispersion: use a high shear disperser to disperse 25 parts of alkali-free glass fibers with a diameter of 0.6 μm;

[0040] 3) Slurry preparation: import the slurry obtained in steps 1) and 2) into the slurry preparation tank, and evenly add 8 parts of modified nano-cellulose with a diameter of 6nm and 10 parts of fluorocarbon water repellent, wherein the modified nano-cellulose Cellulose is obtained by hydrophobic modification of nanocellulose, and the degree of substitution of hydrophobic groups is 0.20;

[0041] 4) Molding: the mixed slurry obtained in step 3) is wet-molded through a paper sample extractor, and the quantitative control is 60g / m 2 ;

[0042] 5) Hot pressing: hot pressing the paper sample obtained in step 4) through a flat vulcanizing machine, the...

Embodiment 3

[0048] 1) Beating: Utilize a volt beater to beat 68 parts of polypropylene / polyester fiber composite fibers with a diameter of 19um, and control the Canadian freeness of the slurry to be 150;

[0049] 2) Dispersion: use a high shear disperser to disperse 30 parts of alkali-free glass fibers with a diameter of 1.0 μm;

[0050] 3) Slurry preparation: import the slurry obtained in steps 1) and 2) into the slurry preparation tank, and evenly add 9.5 parts of modified nano-cellulose with a diameter of 10nm and 13 parts of fluorocarbon water repellent, wherein the modified nano-cellulose Cellulose is obtained by hydrophobic modification of nanocellulose, and the degree of substitution of hydrophobic groups is 0.25;

[0051] 4) Molding: the mixed slurry obtained in step 3) is wet-molded through a paper sample extractor, and the quantitative control is 50g / m 2 ;

[0052] 5) Hot pressing: hot pressing the paper sample obtained in step 4) through a flat vulcanizing machine, the hot pres...

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Abstract

The invention discloses electrostatic air filter paper. The electrostatic air filter paper is prepared from polypropylene / polyester composite, chopped glass fiber cotton, modified nano cellulose and waterproof emulsion. The invention also discloses a preparation method of the electrostatic air filter paper. The preparation method comprises the following steps: firstly, beating; secondly, dispersing; thirdly, mixing pulp; fourthly, forming; fifthly, hot pressing; sixthly, impregnating; seventhly, drying. The electrostatic air filter paper obtained by the preparation method disclosed by the invention has the characteristics of higher filtering efficiency, relatively-low filtering resistance and good quality stability.

Description

technical field [0001] The invention belongs to the technical field of filter paper, in particular to an electrostatic air filter paper and a preparation method thereof. Background technique [0002] With the progress of the times, people have higher and higher requirements for environmental quality, but the rapid economic development has aggravated the pollution of the environment, and the dust, chemicals, and harmful microorganisms in the air have adverse effects on people's health. At the same time, the requirements for clean rooms such as medicine, biological sciences, integrated circuits, and sterile operating rooms are getting higher and higher. Therefore, effective control of harmful substances in the air is a major problem to be solved. [0003] The application of air filters and filter materials is an important means of purifying the air. Air filter paper is specially used to make paper filter elements in various air filters. This paper filter element is a key com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H13/00D21H13/24D21H13/14D21H13/40D21H13/02
CPCD21H13/00D21H13/02D21H13/14D21H13/24D21H13/40D21H27/08
Inventor 胡志军张学金陈华金光范
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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