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Glass fiber filter material and preparation method thereof

A filter material and glass fiber technology, which is applied in the field of glass fiber filter material post-processing technology, can solve the problems of slow production speed, poor softness, high cost, etc., achieve uniform distribution of glue, good water and oil repellency, The effect of easy industrial production

Active Publication Date: 2011-08-17
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

[0005] Most of the existing post-processing technologies for glass fiber filter materials use padding finishing, and the gluing rate accounts for about 12-25% of the weight of the filter material cloth. This finishing method not only wastes a lot of water resources, drying energy and electric energy in production. , the length of the oven is required to be longer, the production speed is slower, the output is low, and the migration of active ingredients such as polytetrafluoroethylene will also occur, resulting in uneven gluing of the filter material, resulting in uneven peeling strength of the filter material; existing The concentration of active ingredients such as polytetrafluoroethylene in the post-treatment formula is low, which is not conducive to uniform coating on the glass fiber; after the existing glass fiber filter material is post-treated, the filter material is relatively stiff, with poor softness and folding resistance. It is very poor and directly affects the final service life of the filter material; although the use of polytetrafluoroethylene film coating can prolong the service life of the glass fiber filter material, the cost is too high, which is not conducive to market promotion

Method used

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  • Glass fiber filter material and preparation method thereof
  • Glass fiber filter material and preparation method thereof
  • Glass fiber filter material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] 1) Production of filter material: use glass fiber with a fineness of 5.5 μm and a length of 51 mm to prepare the filter material. The two layers are non-woven layers, and the middle layer is made of woven fabric. The weight is 708 g / m 2 , thickness 2.0mm.

[0040] 2) Preparation of finishing agent: polytetrafluoroethylene dispersion emulsion 350ml / L, high temperature resistant fluorine-containing polyacrylate softener 455ml / L, silicone water repellent agent 85ml / L, siloxane coupling agent 4.2ml / L , emulsifier 0.6ml / L, catalyst 0.10g / L, anionic foaming agent 3.0g / L, penetrant 2.8g / L, stabilizer 12.2g / L, mix the raw materials in the formula with water after stirring To 1 liter, the finishing liquid is uniform by mechanical stirring, and the viscosity of the finishing liquid is 68mPa·s.

[0041] Among them, the polytetrafluoroethylene dispersion emulsion has a solid content of 40% and a pH value of 7; the emulsifier is triethanolamine fatty acid salt; the inorganic salt c...

Embodiment 2

[0049] 1) Production of filter material: use glass fiber with a fineness of 4.5μm and a length of 60mm to prepare the filter material. The two layers are non-woven layers, and the middle layer is made of woven fabric. The weight is 685g / m 2 , thickness 1.9mm.

[0050] 2) Preparation of finishing agent: 400ml / L polytetrafluoroethylene dispersion emulsion, 400ml / L high temperature resistant fluorine-containing polyacrylate softener, 110ml / L silicone water repellent agent, 4.7ml / L silicone coupling agent , emulsifier 0.69ml / L, catalyst 0.22g / L, anionic foaming agent 9.8g / L, penetrant 16.6g / L, stabilizer 18.5g / L, mix the raw materials in the formula with water after stirring To 1 liter, the finishing solution is uniform through mechanical stirring, and the viscosity of the finishing solution is 82mPa·s.

[0051] Among them, the solid content of the polytetrafluoroethylene dispersion emulsion is 75%, and the pH value is 8; the emulsifier is polyoxyethylene alkylphenol ether sulfat...

Embodiment 3

[0059] 1) Production of filter material: use glass fiber with a fineness of 5.5 μm and a length of 51 mm to prepare the filter material. The two layers are non-woven layers, and the middle layer is made of woven fabric. The weight is 740 g / m 2 , thickness 1.8mm.

[0060] 2) Preparation of finishing agent: polytetrafluoroethylene dispersion emulsion 620ml / L, high temperature resistant fluorine-containing polyacrylate softener 100ml / L, silicone water repellent agent 170ml / L, silicone coupling agent 8.7ml / L , emulsifier 1.92ml / L, inorganic salt catalyst 1.55g / L, anionic foaming agent 20g / L, penetrant 38g / L, stabilizer 20g / L, mix each raw material in the formula with water after stirring To 1 liter, the finishing solution is uniform through mechanical stirring, and the viscosity of the finishing solution is 82mPa·s.

[0061] Wherein, the polytetrafluoroethylene dispersed emulsion has a solid content of 55%, and a pH value of 7.5; the emulsifier is an alkyl sulfonate; the catalyst...

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Abstract

The invention discloses a glass fiber filter material and a preparation method thereof. The filter material comprises a base fabric, wherein the upper surface and the lower surface of the base fabric are respectively provided with a non-woven layer, and at least one of the non-woven layers is internally and externally provided with a foam coating layer respectively. The preparation method of the glass fiber filter material comprises the following steps of: manufacturing the glass fiber filter material, preparing finishing agent, generating foam, coating, and drying. The glass fiber filter material is subject to foaming layer arrangement, and the concentration of the finishing agent is increased, so that the finishing agent is distributed in the filter material more evenly, the migration phenomenon is reduced, and a mass of water resource, electric energy and heat energy are saved; after the glass fiber filter material is finished, and the gluing quantity of the filter material is decreased to 7-15% from 12-25% during finishing in a leaching way, so that the glass fiber filter material is even in distribution of the gluing quantity, good in flexibility, stable in quality, chemical corrosion-resistant, good in water resistance and oil resistance, easy to dedust, easy for industrial production, free of the existing water and energy-wasting step of finishing in a padding way, goodin folding endurance, and long in service life at about 15 months.

Description

technical field [0001] The invention relates to a post-treatment process of glass fiber filter material in the field of high-temperature flue gas dust removal, specifically a glass fiber filter material and a preparation method thereof. Background technique [0002] The smoke and dust produced by the iron and steel industry, metallurgical industry and cement industry not only have high temperature and high concentration, but also have very complex components, which seriously pollute the air environment. With the rapid development of the economy and the continuous enhancement of people's awareness of environmental protection, the country has paid more and more attention to environmental protection issues. Especially in the field of heavy smoke pollution, strict industry emission standards have been formulated. The emission requirements of smoke particles in many industries are lower than 50mg / m 3 . [0003] Glass fiber is more and more favored by the environmental protection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B17/02B32B17/10B32B27/30B32B27/18
Inventor 云高杰于淼涵阳建军张然李敏
Owner 南京际华三五二一环保科技有限公司
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