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Finishing agent for aftertreatment of glass fiber filter material

A finishing agent and filter material technology, which is applied in the field of glass fiber filter material post-processing technology, can solve the problems of reduced service life, poor flexibility and folding resistance of glass fiber filter material, and achieves uniform distribution, water and oil repellency. Good and water-saving effect

Active Publication Date: 2013-05-01
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

[0006] Purpose of the invention: In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a glass fiber filter that can alleviate the problems of softness, poor folding resistance and reduced service life of the glass fiber filter material caused by padding treatment. Finishing agent for post-processing

Method used

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  • Finishing agent for aftertreatment of glass fiber filter material
  • Finishing agent for aftertreatment of glass fiber filter material
  • Finishing agent for aftertreatment of glass fiber filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (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.

[0029] (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 L. Emulsifier 0.6ml / L, Catalyst 0.10g / L, Anionic Foaming Agent 3.0g / L, Penetrant 2.8g / L, Stabilizer 12.2g / L, Stir each raw material in the formula and add water Make up to 1 liter, and make the finishing solution uniform through mechanical stirring, and the viscosity of the finishing solution is 68mPa s.

[0030] Wherein, the solid content of the polytetrafluoroethylene dispersion emulsion is 40%, and the pH value is 7; the emulsifier is triethanolamine fatty acid salt; the ...

Embodiment 2

[0038] (1) Production of filter material: use glass fiber with a fineness of 4.5 μm and a length of 60 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 685 g / m 2 , thickness 1.9mm.

[0039] (2) Preparation of finishing agent: PTFE dispersion emulsion 400ml / L, high temperature resistant fluorine-containing polyacrylate softener 400ml / L, silicone water repellent agent 110ml / L, siloxane coupling agent 4.7ml / L L. 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 evenly and add water Make up to 1 liter, and make the finishing solution uniform through mechanical stirring, and the viscosity of the finishing solution is 82mPa s.

[0040] Wherein, the polytetrafluoroethylene dispersed emulsion has a solid content of 75% and a pH value of 8; the emulsifier is polyoxyethylene alkylphenol ether sulfate; the inorg...

Embodiment 3

[0047] (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.

[0048] (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, siloxane coupling agent 8.7ml / L L. Emulsifier 1.92ml / L, inorganic salt catalyst 1.55g / L, anionic foaming agent 20g / L, penetrant 38g / L, stabilizer 20g / L, mix all raw materials in the formula and add water Make up to 1 liter, and make the finishing solution uniform by mechanical stirring, and the viscosity of the finishing solution is 82mPa·s.

[0049] Among them, the solid content of the polytetrafluoroethylene dispersion emulsion is 55%, and the pH value is 7.5; the emulsifier is an alkyl sulfonate; the c...

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Abstract

The invention discloses a finishing agent for aftertreatment of a glass fiber filter material, wherein 1L of the finishing agent comprises the following components: polytetrafluoroethylene dispersion emulsion, a heat-resistant fluorine-containing polyacrylic acid ester softening agent, an organosilicon water-repellent agent, a siloxane coupling agent, an emulsifying agent, an inorganic salt catalyst, an anionic foaming agent, a penetrating agent, a stabilizing agent and water; and the viscosity of the finishing agent is 35-100 mPa.s. The invention has the advantages that the finishing agent is quite evenly distributed in the filter material, the phenomenon of migration is reduced, the filter material has low liquid rate, and a large quantity of water resources, electrical energies and heat energies are saved. The treated filter material has obviously increased softness, strengthened flexibility and good folding resistance, and the service life of the glass fiber can be prolonged to about fifteen months. In addition, the glass fiber filter material has slightly lower cost, simple technology and service life prolonged by about three months under the condition of ensuring the serviceperformance.

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 finishing agent for post-treatment of glass fiber filter material. 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 prote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01D39/08
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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