Highly-resistant-to-water core-level glass fiber air filtering paper and preparing method

A technology of air filter paper and glass fiber, which is applied in pulp beating method, filter paper, filtration separation, etc., can solve the problems of insufficient water resistance and short water resistance time, and achieve good filtering effect, smooth surface and good film formation performance effect

Active Publication Date: 2013-08-14
CHONGQING ZAISHENG TECH CORP
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Problems solved by technology

At present, the research and development of domestic nuclear-grade glass fiber air filter paper is still in its infancy. Most domestic nuclear industry companies use glass fiber air filter materials produced by foreign manufacturers to filter...

Method used

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  • Highly-resistant-to-water core-level glass fiber air filtering paper and preparing method

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Embodiment 1

[0023] The method that present embodiment prepares high anti-water nuclear grade glass fiber air filter paper comprises the following steps:

[0024] 1) Select 28 parts of alkali-free glass fiber with a diameter of 0.1 μm, 52 parts of alkali-free glass fiber with a diameter of 0.5 μm, 15 parts of alkali-free glass fiber with a diameter of 0.8 μm, and 5 parts of long alkali-free glass fiber with a diameter of 1.5 μm share;

[0025] 2) Add the selected raw materials into the sulfuric acid aqueous solution to beat and disperse to obtain a slurry, control the mass concentration of the slurry to 3%, the degree of beating to 48°SR, the pH value to 2.8, and the beating time to 30 minutes;

[0026] 3) Add water to dilute the slurry obtained in step 2) to a mass concentration of 0.3%;

[0027] 4) Use a centrifugal deslagging machine to remove slag from the diluted slurry in step 3), and perform wet molding on an inclined wire forming paper machine to obtain glass fiber wet paper;

[...

Embodiment 2

[0032] The method that present embodiment prepares high anti-water nuclear grade glass fiber air filter paper comprises the following steps:

[0033] 1) Select 20 parts of E-glass fiber with a diameter of 0.3 μm, 57 parts of E-glass fiber with a diameter of 0.7 μm, 15 parts of E-glass fiber with a diameter of 1.0 μm, and 8 long fibers of E-glass with a diameter of 1.5 μm share;

[0034] 2) Add the selected raw materials into the sulfuric acid aqueous solution to beat and disperse to obtain a slurry, control the mass concentration of the slurry to 3%, the degree of beating to 48°SR, the pH value to 2.8, and the beating time to 30 minutes;

[0035] 3) Add water to dilute the slurry obtained in step 2) to a mass concentration of 0.3%;

[0036] 4) Use a centrifugal deslagging machine to remove slag from the diluted slurry in step 3), and perform wet molding on an inclined wire forming paper machine to obtain glass fiber wet paper;

[0037] 5) The wet paper obtained in the dehydr...

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Abstract

The invention discloses a piece of highly-resistant-to-water core-level glass fiber air filtering paper. The filtering paper comprises glass fiber filtering paper made from alkali-free glass fiber with the diameter being 0.1-0.3mu m, 0.5-0.7mu m and 0.8-1.0mu m and from alkali-free glass long fiber with the diameter being 1.4-1.6mu m, and a water-resistant layer attached to the face of the filtering paper and formed by hydrogen silicon oil and acrylic emulsion. The invention also discloses a preparing method for the air filtering paper, which comprises the steps of 1, selecting raw materials according to a proportion, 2, performing pulping to disperse the raw materials to obtain pulp, 3, diluting the pulp and adjusting the PH value, 4, performing slag-removing on the pulp in the step 3 and obtaining wet paper by wet forming, 5 dehydrating the wet paper in the step 4, 6, spraying mixing emulsion of the hydrogen silicon oil, the acrylic emulsion and water on the surface of the wet paper in the step 5; and 7, drying the wet paper in the step 6. The glass fiber air filtering paper has excellent water-resistant property and is suitable for severe environment.

Description

technical field [0001] The invention relates to a glass fiber air filter paper, in particular to a nuclear-grade glass fiber air filter paper with high water resistance and a preparation method thereof. Background technique [0002] Glass fiber air filter paper is made of glass fiber as the main raw material, and is generally made by wet forming process. It has the characteristics of uniform fiber distribution, large dust holding capacity, small resistance, and high strength. It is an ideal air filter material. According to the filtration efficiency, glass fiber air filter paper is divided into three series: glass fiber air filter paper for ventilation (ASHRAE), medium and high-efficiency glass fiber air filter paper (HEPA), and ultra-high-efficiency glass fiber air filter paper (ULPA). Glass fiber filter paper for ventilation (ASHRAE) is mainly used in ordinary air-conditioning systems, gas turbines and air compressors; medium and high-efficiency glass fiber filter paper (...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21H27/06D21H19/40D21H19/48D21D1/02
Inventor 郭茂秦大江
Owner CHONGQING ZAISHENG TECH CORP
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