Flame-retardant air filter paper, preparation method therefor and application thereof

A technology of air filter paper and filter paper, which is applied in the direction of combustion air/combustion-air treatment, paper, papermaking, etc. It can solve the problems that cannot meet the market demand, the mechanical properties of filter paper decrease, and the flame retardant effect cannot last, etc., so as to improve the quality of paper , Long service life, increase the effect of whiteness

Inactive Publication Date: 2015-09-09
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

At present, such products in the domestic market mostly use additive flame retardants. This type of flame retardant has two major disadvantages. One is that the flame retardant efficiency is low, and the amount added is generally large, which leads to a decrease in the mechanical properties of the filter paper. The flame retardant effect cannot last long, and there will be a phenomenon of returning to halogen and absorbing moisture, causing environmental pollution
With the continuous improvement of people's awareness of environmental protection and energy saving, such products can no longer meet the needs of the market.

Method used

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  • Flame-retardant air filter paper, preparation method therefor and application thereof
  • Flame-retardant air filter paper, preparation method therefor and application thereof
  • Flame-retardant air filter paper, preparation method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A manufacturing process of flame-retardant air filter paper includes the following steps:

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

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

[0045] 3) Treat 60kg of glass fiber with 5% HCl at room temperature for 3hr;

[0046] 4) The glass fiber of step 3), the cotton linters pulp of step 2) and the polylactic acid fiber 15kg are beaten with a beating machine, and then the pulp slurry is obtained by on-line grinding with a double disc refiner. The beating concentration is 1.98%, respectively Beat to 50°SR, 16°SR and 22°SR;

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

[0048] 6) Add 3 kg of butanol, 3 k...

Embodiment 2

[0054] A manufacturing process of flame-retardant air filter paper includes the following steps:

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

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

[0057] 3) Treat 55kg of glass fiber with 8% HCl at room temperature for 3hr;

[0058] 4) Use a beating machine to beat the glass fiber of step 3), the cotton linters pulp of step 2) and the polylactic acid fiber 14kg, and then use a double disc refiner to polish to obtain a pulp slurry with a beating concentration of 2.67%, respectively Beat to 42°SR, 15°SR and 26°SR;

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

[0060] 6) Add 4 kg of silicone ...

Embodiment 3

[0066] A manufacturing process of flame-retardant air filter paper includes the following steps:

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

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

[0069] 3) Treat 60 kg of glass fiber with 6% HCl at room temperature for 3 hours;

[0070] 4) The glass fiber of step 3), the cotton linters pulp of step 2) and 18 kg of polylactic acid fiber are beaten with a beater, and then polished on-line by a double-disc refiner to obtain a pulp slurry with a beating concentration of 2.08%, respectively Beat to 58°SR, 18°SR and 20°SR;

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

[0072] 6) Add 3kg of pine oil, 3kg of sod...

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Abstract

The invention discloses air flame-retardant air filter paper which comprises raw paper and an imprgnant for impregnating the raw paper, wherein the raw paper comprises glass fibers, cotton linter pulp treated by alkali, polylactic acid fibers, a defoaming agent, a dispersant,a wet strength agent, a water-proofing agent and a brightening agent; the imprgnant comprises phenolic resin, styrene-acrylic emulsion, normal hexane, methanol, N-hydroxymethyl acrylamide, a wetting agent, a flame retardant N, N '-piperazinetetra(phenol) phosphoramidate and a flame retardant decabromodiphenyl ethane. The invention further discloses a preparation method for the flame-retardant air filter paper. The air filter paper prepared by the preparation method is remarkable, high and lasting in flame retardant efficiency, has no great effect on the mechanical performance of the filter paper, and can be widely applied to the field of engines.

Description

Technical field [0001] The invention relates to the technical field of filter paper, in particular to a flame-retardant air filter paper and a preparation method and application thereof. Background technique [0002] Flame-retardant air filter paper is used to make paper filter elements in air filters. This paper filter element is a key component in air filters and determines the performance of air filters. It must have good filtration efficiency and good flame retardant properties. In recent years, air filter paper combustion accidents have occurred frequently due to the high temperature of the cylinder and hot air return. More and more engine manufacturers have put forward requirements for the flame retardant performance of air filter paper. At present, this type of products on the domestic market mostly use additive flame retardants. This type of flame retardant has two major disadvantages. One is low flame retardant efficiency, and the added amount is generally large, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/40D21H13/24D21H21/12D21H21/08D21H21/20D21H21/16D21H21/32D21H17/48D21C9/00F02M35/024
Inventor 吴安波
Owner 杭州特种纸业有限公司
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