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High-temperature resistant air filter paper and preparation method thereof

An air filter paper, high temperature resistant technology, applied in the direction of filter paper, separation methods, chemical instruments and methods, etc., can solve the problems of powder shedding, low strength of filter paper, breakage, etc., and achieve high filtration efficiency, high tensile strength and stiffness Degree, improve the effect of filtration efficiency

Inactive Publication Date: 2010-06-09
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.

Method used

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  • High-temperature resistant air filter paper and preparation method thereof
  • High-temperature resistant air filter paper and preparation method thereof
  • High-temperature resistant air filter paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Please combine figure 1 , in the present embodiment, adopt two kinds of non-alkali ultra-fine glass microfibers as main raw material as the glass fiber air filter paper 1 of filter base, mix the non-alkali continuous glass fiber chopped strands of diameter 6 μm, fiber length 6mm and 9mm and 3 : 2 The mixed polyester and aramid chopped fibers are made into a slurry, stirred and mixed evenly by a high-frequency deflagging machine, and after the forming net is vacuum-molded, the water-based epoxy resin emulsion (Yixing Haotian Chemical Co., Ltd. Company) and water-based silicone emulsion (Dow Corning Company) mixed according to 1:1, add curing agent, and dilute 10 times with water, spray the diluted emulsion evenly on the sizing part and vacuum suction, and then dry it in a steam dryer at 150 °C Dry for 2-3 minutes.

[0021] The mass percentages of each component in the above-mentioned high-temperature-resistant glass fiber air filter paper are shown in Table 1:

[0022]...

Embodiment 2

[0029] In this embodiment, the glass fiber air filter paper 1 used as the filter base layer uses two kinds of alkali-free ultrafine glass microfibers 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 aramid short Cut the fiber to make a slurry, stir and mix evenly with a high-frequency deflagging machine. After vacuum forming on the forming net, add water-based phenolic resin (Wuxi Xinming Chemical Co., Ltd.) and water-based silicone emulsion (Dow Corning Corporation) in the batcher After mixing according to 5:1, add curing agent and dilute 10 times with water, spray the diluted emulsion evenly on the sizing part and vacuum suction, and then dry it in a steam dryer at 150°C for 2-3 minutes.

[0030] The mass percentages of each component in the above-mentioned high-temperature-resistant glass fiber air filter paper are shown in Table 3:

[0031] The mass percentages of each component ...

Embodiment 3

[0038] In this embodiment, as the glass fiber air filter paper 1 of the filter base, two kinds of alkali-free ultrafine glass microfibers are used as the main raw material, and the slurry is made of alkali-free continuous glass fiber chopped strands with a diameter of 6 μm and a fiber length of 6 mm. Stir and mix evenly with a high-frequency deflagging machine. After vacuum forming on the forming net, add water-based phenolic resin (Wuxi Xinming Chemical Co., Ltd.) into the batching device and dilute it 20 times with water, and apply it in the overflow of the sizing part The diluted emulsion is vacuum sucked, and then dried in a steam dryer at 150°C for 2 to 3 minutes.

[0039] The mass percentages of each component in the above-mentioned high-temperature-resistant glass fiber air filter paper are shown in Table 5:

[0040] The mass percent of each component of high temperature resistant glass fiber air filter paper in table 5 embodiment 3

[0041]

[0042] The prepared ai...

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Abstract

The invention aims to provide high-temperature resistant air filter paper and a preparation method thereof. The high-temperature resistant air filter paper comprises glass fiber air filter paper and a resin layer formed on the surface of the glass fiber air filter paper, wherein the mass of the resin layer is 3 to 15 percent of that of the glass fiber air filter paper. Preferably, the main raw material of the glass fiber air filter paper is alkali-free superfine glass fibers. The alkali-free superfine glass fibers are mixed with alkali-free continuous glass fiber chopped strands and a small amount of organic fiber to be pulped and formed; then a high-temperature resistant water-soluble resin diluted by 5 to 20 folds is sprayed or overflowed onto a base layer; drying the base layer to obtain the air filter paper of which the filtration efficiency can reach more than 99.995 percent. The high-temperature resistant air filter paper has high tensile strength and deflection, can be continuously used in an environment of a temperature of 220 to 350 DEG C and can be used in an ultra-clean oven or high temperature air purification equipment and systems.

Description

technical field [0001] The invention relates to an air filter material, and in particular to a high temperature resistant air filter paper 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. [0003] In recent years, people have paid attention to and researched on high temperature resistant air filter paper. Chinese patent CN 2071979 discloses a temperature-resistant ai...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21H17/46
Inventor 马驰王莹陈晓燕吴敏卢猛王志明
Owner SINOMA SCI & TECH
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