Preparation method of aramid fiber filter bag and aramid fiber filter bag

An aramid fiber and filter bag technology, applied in the field of aramid fiber, can solve the problems of weak bonding and inert surface of aramid fiber, and achieve the effects of stable quality, improved heat sealing effect and simple preparation.

Active Publication Date: 2016-06-08
南京际华三五二一环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly provides a method for preparing an aramid filter bag and the aramid filter bag prepared by the method, which solves the problem that the existing aramid fiber surface is inert, and the bonding between fibers is weak at high temperature. If the temperature exceeds 400°C, direct carbonization and decomposition can be solved, and aramid fiber filter bags with strong and high filtration precision can be obtained

Method used

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  • Preparation method of aramid fiber filter bag and aramid fiber filter bag

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of filter material: use aramid fibers with a fineness of 14 μm and a length of 55 mm to prepare filter materials. 500g / m 2 , the thickness is 1.8mm;

[0019] (2) Preparation of silane coupling agent solution: silane coupling agent A-15 14.2ml / L, emulsifier 0.6ml / L, catalyst 0.10g / L, after mixing the raw materials in the formula evenly, add water to 1 liter, Make the finishing solution uniform by mechanical stirring;

[0020] Wherein the emulsifier is Tween 80, and the catalyst is lead acetate;

[0021] (3) Surface coating: place the prepared silane coupling agent solution in the rubber material machine, control the dosage and osmotic pressure of the rubber material under the action of the gear pump, so that the treatment agent penetrates into the seam port 1 under the filter material, and Evenly coated on the surface of aramid fiber raw material at the lower seam, where the speed of gluing is 5.5m / min, and then dried by drying equipment;

[0022] (4)...

Embodiment 2

[0026] (1) Preparation of filter material: use aramid fibers with a fineness of 14 μm and a length of 55 mm to prepare filter materials. 500g / m 2 , the thickness is 1.8mm;

[0027] (2) Preparation of silane coupling agent solution: the mass concentration of silane coupling agent A-151 is 2%, the concentration of industrial alcohol is 99%, and the silane coupling agent A-151 and alcohol are mechanically stirred to make the solution evenly mixed;

[0028] (3) Surface coating: place the prepared silane coupling agent solution in the rubber material machine, control the dosage and osmotic pressure of the rubber material under the action of the gear pump, so that the treatment agent penetrates into the seam port 1 under the filter material, and Evenly coated on the surface of aramid fiber raw material at the lower seam, where the speed of gluing is 5.5m / min, and then dried by drying equipment;

[0029] (4) Heat sealing process: Heat the treated aramid fiber felt through a heat se...

Embodiment 3

[0032] (1) Preparation of filter material: use aramid fibers with a fineness of 14 μm and a length of 55 mm to prepare filter materials. 500g / m 2 , the thickness is 1.8mm;

[0033] (2) Preparation of silane coupling agent solution: silane coupling agent A-151 10ml / L, emulsifier 2ml / L, catalyst 1.55g / L, mix each raw material in the formula evenly, add water to 1 liter, and mechanically Stir to make the finishing liquid uniform;

[0034] Wherein the emulsifier is polyoxyethylene polyoxypropylene benzyl biphenol ether, and the catalyst is fatty acid salt;

[0035] (3) Surface coating: place the prepared silane coupling agent solution in the rubber material machine, control the dosage and osmotic pressure of the rubber material under the action of the gear pump, so that the treatment agent penetrates into the seam port 1 under the filter material, and Evenly coated on the surface of aramid fiber raw material at the lower seam, where the speed of gluing is 5.5m / min, and then dri...

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Abstract

The invention relates to the technical field of aramid fibers and in particular relates to a preparation method of an aramid fiber filter bag and the aramid fiber filter bag. According to the method, aramid fibers are used as fiber raw materials, and are sewed through a heat sealing process; a sewed part is coated with a silane coupling agent solution and the aramid fibers are aramid fibers 1313. With the adoption of the preparation method of the aramid fiber filter bag, provided by the invention, the problems that the surfaces of existing aramid fibers are inert, the bonding between the fibers is relatively weak at a room temperature, the fibers are directly carbonized and decomposed when the temperature is more than 400 DEG C and the like are solved, and the aramid fiber filter bag with strong power and high filtering precision is obtained.

Description

technical field [0001] The invention belongs to the technical field of aramid fibers, and in particular relates to a preparation method of an aramid filter bag and the aramid filter bag. Background technique [0002] At present, the general filter bags are seamed filter bags, but there are pinholes and gaps in the seams of the seamed filter bags, especially under the long-term high-pressure jet cleaning operation, the sewing parts of the seamed filter bags are prone to bursting, Causing dust leakage, making it difficult for smoke and dust emissions to meet standards. The heat sealing process can directly bond the filter materials together, avoiding the phenomenon of pinholes and gaps in the seam filter bag, which can greatly improve the filtration accuracy of the filter bag, and can also save the cost of sewing thread. [0003] However, at present, only PPS (polyphenylene sulfide) and other fiber materials with obvious melting point can be used for heat-sealing technology. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/02B29C65/10D06M13/50D06M101/36
CPCB01D46/023B29C65/103D06M13/50D06M2101/36
Inventor 何丽芬于淼涵何文荣
Owner 南京际华三五二一环保科技有限公司
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