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No-baffle high-temperature-resistant air filter paper and preparation method thereof

A technology of air filter paper and high temperature resistance, which is applied in the direction of filter paper, separation methods, chemical instruments and methods, etc. It can solve the problems of powder shedding, high resistance of filter paper, high resistance of filter, etc., and achieve enhanced tensile strength and good high temperature resistance. , the effect of high filtration efficiency

Inactive Publication Date: 2012-06-20
SINOMA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filter has a high temperature resistance of over 900°C, but since the filter paper is not reinforced with a binder, the strength of the filter paper is low, and it is prone to breakage and powder shedding when folding, which affects the filtering effect of the filter.
Chinese patent CN101725086A discloses a high-temperature-resistant air filter paper and its preparation method. The filter paper uses alkali-free glass fiber as the main raw material, sprays a high-temperature-resistant water-soluble resin on the surface, and then dries to make it. However, the resistance of the filter paper Larger, and will absorb the hot melt adhesive used as filter separator during use, resulting in high filter resistance

Method used

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  • No-baffle high-temperature-resistant air filter paper and preparation method thereof
  • No-baffle high-temperature-resistant air filter paper and preparation method thereof
  • No-baffle high-temperature-resistant air filter paper and preparation method thereof

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Effect test

Embodiment 1

[0018] Please combine figure 1 , in the present embodiment, as the glass fiber air filter paper 1 of filtering base layer, two kinds of borosilicate glass microfibers are used as main raw materials, mixed with alkali-free continuous glass fiber chopped strands with a diameter of 6 μm, fiber lengths of 6 mm and 9 mm, and 1.5 : 1 mixed polyester and aramid organic fibers are made into slurry, stirred and mixed evenly by a high-frequency deflagging machine, after the forming net is vacuum-molded, water-soluble epoxy resin emulsion (Yixing Haotian Chemical Co., Ltd. Company, SM600-WY-35) and water-soluble silicone resin emulsion (Dow Corning Company Z-6018) were mixed according to 1.5:2.5, and diluted 10 times with water, and the diluted emulsion was evenly sprayed on the sizing part and vacuum sucked, and then Dry in a steam dryer at 150°C for 2 to 3 minutes.

[0019] The mass percentages of each component in the above-mentioned high-temperature-resistant glass fiber air filter ...

Embodiment 2

[0027] In this embodiment, as the glass fiber air filter paper 1 of the filter base layer, two kinds of borosilicate glass microfibers are used as the main raw material, mixed with alkali-free continuous glass fiber chopped strands with a diameter of 6 μm and a fiber length of 6 mm, and organic fiber aromatics. The slurry is made of lentil short-cut fiber, and it is stirred and mixed evenly by a high-frequency debulking machine. After the forming net is vacuum-molded, the water-soluble phenolic resin (phenolic resin for glass fiber produced by Wuxi Xinming Chemical Co., Ltd. ) and water-based silicone emulsion (Dow Corning Z-6018) were mixed at a ratio of 3:1, diluted 10 times with water, sprayed the diluted emulsion evenly on the sizing part and vacuum sucked, and then dried in a steam dryer at 150 ° C for 2 ~3min.

[0028] The mass percent of each component in the above-mentioned high temperature resistant glass fiber air filter paper is shown in Table 3:

[0029] Table 3: ...

Embodiment 3

[0036] In this embodiment, as the glass fiber air filter paper 1 of the filter base, two kinds of borosilicate glass microfibers are used as the main raw material, mixed with alkali-free continuous glass fiber chopped strands with a diameter of 6 μm and a fiber length of 6 mm to make a slurry, Stir and mix evenly with a high-frequency decomposer, and after the forming net is vacuum-molded, dilute the water-based phenolic resin (phenolic resin for glass fiber produced by Wuxi Xinming Chemical Co., Ltd.) with water 20 times in the batching device, Apply the diluted emulsion to the overflow and vacuum suction, and then dry it in a steam drying cylinder at 150°C for 2 to 3 minutes.

[0037] The mass percentages of each component in the above-mentioned high-temperature-resistant glass fiber air filter paper are shown in Table 5:

[0038] Table 5: The mass percent of each component of high temperature resistant glass fiber air filter paper in embodiment 3

[0039]

[0040] The p...

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Abstract

The invention relates to no-baffle high-temperature-resistant air filter paper and a preparation method thereof. The no-baffle high-temperature-resistant air filter paper comprises a glass fiber air filter layer and a resin layer formed on the surface of the glass fiber air filter layer, wherein the glass fiber air filter layer is formed by mixing the following materials in percentage by mass: 70-98% of borosilicate glass microfiber, 1-20% of no-alkali continuous glass fiber chopped strand and 1-10% of organic fiber; the resin layer is a water-soluble resin layer resistant to the temperature of 200-350 degrees centigrade and is formed by the way of mixing one or any two of water-soluble acrylic resin emulsion, water-soluble polyvinyl acetate emulsion, water-soluble phenolic resin emulsion, water-soluble organic silicon resin emulsion, water-soluble epoxy resin emulsion and water-soluble polytetrafluoroethylene emulsion in a volume ratio of 1:10 to 10:1, uniformly spraying or overflowing to the glass fiber air filter layer and drying, wherein the mass of the resin layer is 3-10% of that of the glass fiber air filter paper. The no-baffle high-temperature-resistant air filter paper provided by the invention has relatively high filter efficiency and relatively good high temperature resistance.

Description

technical field [0001] The invention relates to an air filter material, and in particular to a high-temperature-resistant air filter paper without a partition and a preparation method thereof. Background technique [0002] Air filter paper is a key component of the air filter element, and its performance determines the effect of the air filter. As the pharmaceutical, medical and health, electronics and other industries have higher and higher requirements for the cleanliness of workshops, higher requirements are put forward for air filters. In particular, ultra-clean ovens or high-temperature air purification equipment and systems required by food, pharmaceutical and other production links have a maximum operating temperature of 350°C, so higher requirements are placed on the temperature resistance of filter paper. At present, pure glass microfiber filter paper is mostly used in the environment with high temperature at home and abroad. This kind of filter paper does not cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H13/40D21H19/22D21H19/24D21H19/32
Inventor 陈晓燕
Owner SINOMA SCI & TECH
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