High-precision air filter paper as well as preparation method and application thereof

An air filter paper, high-precision technology, applied in the field of filter paper, can solve the problems of poor air filter paper bulk, uneven fiber thickness, low filtration accuracy, etc., to achieve the effect of increasing water resistance, simple production process, and reducing production costs

Inactive Publication Date: 2015-09-02
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Air filter paper is usually a kind of paper filter paper made of ordinary wood pulp as the main component. Due to the uneven thickness and high tightness of ordinary wood pulp fibers, the air filter paper made generally has poor bulk and poor filtration accuracy. Low, poor air permeability, low filtration efficiency, short service life and other shortcomings, can not meet the requirements of the rapid development of machinery and electronics manufacturing

Method used

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  • High-precision air filter paper as well as preparation method and application thereof
  • High-precision air filter paper as well as preparation method and application thereof
  • High-precision air filter paper as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A manufacturing process of high-precision air filter paper, comprising the steps of:

[0043] 1) Add 8% NaOH to 15 kg of linter pulp, stir at 120°C for 4 hours to fully remove the wax and soluble impurities in the linters; the viscosity of the linter pulp after treatment is 300 mPas, and the α-fiber The element content is 98%, the ash content is 0.2%;

[0044] 2) Treat the linter pulp obtained in 1) with 5% HCl at room temperature for 3 hr;

[0045] 3) The cotton linter pulp and polylactic acid fibers in step 2) are beaten with a beater, and then online polished by a double-disk refiner to obtain a slurry with a beating concentration of 1.98%, and beating to 16°SR and 22°SR respectively;

[0046] 4) glass fibers are added to the slurry obtained in step 3) to form a pulp slurry;

[0047] 5) Dilute 2 kg of polyamide polyepichlorohydrin resin with water, stir evenly, and slowly add it to the pulp slurry;

[0048] 6) 3 kg of butanol, 3 kg of carboxymethyl cellulose, 1 kg...

Embodiment 2

[0054] A manufacturing process of high-precision air filter paper, comprising the steps of:

[0055] 1) Add 12% NaOH to 18kg of linter pulp, stir at 140°C for 4 hours to fully remove the wax and soluble impurities in the linters; the viscosity of the linter pulp after treatment is 290mPas, and the α-fiber The element content is 99%, the ash content is 0.3%;

[0056]2) Treat the linter pulp obtained in 1) with 8% HCl at room temperature for 3 hr;

[0057] 3) The cotton linter pulp and polylactic acid fibers in step 2) are beaten with a beater, and then online polished by a double-disc refiner to obtain a slurry with a beating concentration of 2.67%, and beating to 15°SR and 26°SR respectively;

[0058] 4) glass fibers are added to the slurry obtained in step 3) to form a pulp slurry;

[0059] 5) Dilute 2 kg of polyamide polyepichlorohydrin resin with water, stir evenly, and slowly add it to the pulp slurry;

[0060] 6) 4kg of silicone oil, 4kg of sodium hexametaphosphate, 2k...

Embodiment 3

[0066] A manufacturing process of high-precision air filter paper, comprising the steps of:

[0067] 1) Add 10% NaOH to 12kg of linter pulp, stir at 120°C for 4 hours to fully remove wax and soluble impurities in linters; the viscosity of the linter pulp after treatment is 280mPas, and α-fiber The element content is 98.5%, the ash content is 0.2%;

[0068] 2) Treat the linter pulp obtained in 1) with 6% HCl at room temperature for 3 hr;

[0069] 3) The cotton linter pulp and polylactic acid fibers in step 2) are beaten with a beater, and then online polished by a double-disc refiner to obtain a slurry with a beating concentration of 2.08%, and beating to 18°SR and 20°SR respectively;

[0070] 4) glass fibers are added to the slurry obtained in step 3) to form a pulp slurry;

[0071] 5) Dilute 2 kg of polyamide polyepichlorohydrin resin with water, stir evenly, and slowly add it to the pulp slurry;

[0072] 6) 3 kg of pine oil, 3 kg of sodium pyrophosphate, 0.5 kg of waterpr...

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Abstract

The invention discloses high-precision air filter paper which comprises body paper and an impregnant for impregnating the body paper, wherein the body paper comprises glass fiber, alkali treated cotton linter pulp, polylactic acid fiber, a defoaming agent, a dispersing agent, a wet strength agent, a waterproof agent and a brightener; the impregnant comprises phenolic resin, styrene-acrylic emulsion, normal hexane, methanol, N-hydroxymethyl acrylamide and a wetting agent. The invention further discloses a preparation method of the high-precision air filter paper. Through the preparation method, the obtained high-precision air filter paper has the characteristics of relatively high filter precision, relatively low filter resistance, relatively high pollutant carrying capacity, long service life and good quality stability.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a high-precision air filter paper and its preparation method and application. Background technique [0002] Air filter paper is specially used to make paper filter elements in various air filters. This paper filter element is a key component in the air filter and determines the performance of the air filter. It is mainly to filter the air to remove fine particles suspended in the air. The particle size of these particles is generally less than 1 μm, and also includes some aerosol particles belonging to the submicron level. [0003] Air filter paper is usually a kind of paper filter paper made of ordinary wood pulp as the main component. Due to the uneven thickness and high tightness of ordinary wood pulp fibers, the air filter paper made generally has poor bulk and poor filtration accuracy. Low, poor air permeability, low filtration efficiency, short service life and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/40D21H13/24D21H21/16D21H21/20D21H21/08D21H21/12D21H21/32D21C9/00D21H17/48B01D46/00
Inventor 吴安波
Owner 杭州特种纸业有限公司
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