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High-performance light-weight air filtering paper and preparation method thereof

An air filter paper, high-performance technology, applied in the field of mineral fibers, can solve the problems of increasing production cost, increasing the resistance of air filter paper, increasing the raw material of air filter paper, etc., to achieve the effect of improving waterproof performance and improving air filtration effect

Active Publication Date: 2014-09-24
CHONGQING ZAISHENG TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Air filter paper is widely used. With the rapid development of social economy, the requirements for clean rooms such as medicine, biological sciences, integrated circuits, and sterile operating rooms are getting higher and higher. In order to improve the filtration efficiency, traditional air filter paper can only be passed through Increase the quantification of air filter paper, the increase of quantification will often increase the resistance of air filter paper, the increase of resistance will reduce the service life of air filter paper, at the same time, due to the increase of quantification of air filter paper, it is necessary to increase the production of air filter paper Raw materials, increasing production costs

Method used

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  • High-performance light-weight air filtering paper and preparation method thereof

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Embodiment 1

[0024] The method for preparing high performance low grammage air filter paper in this embodiment comprises the following steps:

[0025] 1) Dispersion pulping: first select the E-glass chopped strands with a diameter of 5-6um and the E-glass wool with a diameter of 0.3-0.8um in a ratio of 1:4, then mix the selected raw materials and Add water and sulfuric acid and stir evenly to make a pulp suspension; adjust the addition of water and sulfuric acid so that the mass concentration of the obtained pulp suspension is 0.15%, and the pH value is 4.5;

[0026] 2) Adjustment of pH in the pre-making tank: first remove the slag from the pulp suspension in step 1) and move to the storage tank, then transfer the pulp suspension to the for-making tank, then add clear water to the paper-making tank to adjust the pH of the pulp suspension to 5 and Store for 0.3h; control the amount of water added so that the mass concentration of the pulp suspension is 0.2%;

[0027] 3) Headbox pH adjustme...

Embodiment 2

[0032] The method for preparing high performance low grammage air filter paper in this embodiment comprises the following steps:

[0033] 1) Dispersion pulping: first select the E-glass chopped strands with a diameter of 5-6um and the E-glass wool with a diameter of 0.3-0.8um at a ratio of 1:9, then mix the selected raw materials and Add water and sulfuric acid and stir evenly to make a pulp suspension; adjust the addition of water and sulfuric acid so that the mass concentration of the obtained pulp suspension is 1.2%, and the pH value is 4;

[0034] 2) Adjustment of pH in the pre-making tank: first remove the slag from the pulp suspension in step 1) and move to the storage tank, then transfer the pulp suspension to the for-making tank, then add clear water to the paper-making tank to adjust the pH of the pulp suspension to 4 and Store for 0.8h; control the amount of water added so that the mass concentration of the pulp suspension is 2.5%;

[0035] 3) pH adjustment of the h...

Embodiment 3

[0040] This embodiment prepares the method for high-performance low weight air filter paper, comprises the following steps:

[0041] 1) Dispersion pulping: first select the E-glass chopped strands with a diameter of 5-6um and the E-glass wool with a diameter of 0.3-0.8um in a ratio of 1:7, then mix the selected raw materials and Add water and sulfuric acid and stir evenly to make a pulp suspension; adjust the addition of water and sulfuric acid so that the mass concentration of the obtained pulp suspension is 0.2%, and the pH value is 4.8;

[0042] 2) Adjustment of pH in the pre-making tank: first remove the slag from the pulp suspension in step 1) and move to the storage tank, then transfer the pulp suspension to the for-making tank, then add clear water to the paper-making tank to adjust the pH of the pulp suspension to 5 and Store for 0.5h; control the amount of water added so that the mass concentration of the pulp suspension is 0.23%;

[0043] 3) Headbox pH adjustment: t...

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Abstract

The invention discloses high-performance light-weight air filtering paper. The air filtering paper is prepared from alkali-free glass fiber chopped strands, alkali-free glass fiber cotton and an adhesive, wherein the diameter of the alkali-free glass fiber chopped strands is 5-6 microns; the diameter of the alkali-free glass fiber cotton is 0.3-0.8 micron; the mass ratio of the alkali-free glass fiber chopped strands to the alkali-free glass fiber cotton is 1 to (4-9); the adhesive is composed of acrylic resin and a fluorocarbon water repellent. The invention further discloses a method for preparing the air filtering paper. The method comprises the following steps: firstly, selecting glass fibers in the ratio, and dispersing and pulping; secondly, transferring pulp into a machine chest, and adjusting the pH value to be 4-5; thirdly, transferring the pulp into a breast box, and adjusting the pH value to be 6-8; fourthly, performing wet molding to obtain wet paper; and finally, drying the wet paper to obtain the high-performance light-weight air filtering paper. The weight of the air filtering paper is lower than 75g / m<2>, the adsorption amount of the paper is larger than 1.10ml / g, and the air filtering paper is good in waterproof performance and high in filtering efficiency.

Description

technical field [0001] The invention belongs to the field of mineral fibers, relates to a glass fiber-based air filter paper, in particular to a high-performance low-weight air filter paper and a preparation method thereof. Background technique [0002] Air filter paper is widely used. With the rapid development of social economy, the requirements for clean rooms such as medicine, biological sciences, integrated circuits, and sterile operating rooms are getting higher and higher. In order to improve the filtration efficiency, traditional air filter paper can only be passed through Increase the quantification of air filter paper, the increase of quantification will often increase the resistance of air filter paper, the increase of resistance will reduce the service life of air filter paper, at the same time, due to the increase of quantification of air filter paper, it is necessary to increase the production of air filter paper raw materials, increasing production costs. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H13/40D21H21/16
Inventor 秦大江郭茂李学杰
Owner CHONGQING ZAISHENG TECH CORP
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