CN102888753A - Method for surface refinement of nonwoven filter material - Google Patents
Method for surface refinement of nonwoven filter material Download PDFInfo
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- CN102888753A CN102888753A CN2012104034309A CN201210403430A CN102888753A CN 102888753 A CN102888753 A CN 102888753A CN 2012104034309 A CN2012104034309 A CN 2012104034309A CN 201210403430 A CN201210403430 A CN 201210403430A CN 102888753 A CN102888753 A CN 102888753A
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Abstract
The invention discloses a method for surface refinement of a nonwoven filter material. The method comprises the steps of: immersing a nonwoven filter material into the water solution of a fluorine-containing waterproof agent so as to obtain a waterproof nonwoven filter material through the pad dry cure process; uniformly mixing an organic silicone modified polyacrylate emulsion, sodium dodecyl benzene sulfonate, hydroxyethyl cellulose, a thickner and water and then injecting compressed air so as to obtain a foam emulsion through mechanical shearing action; and scrapping the foam emulsion to the surface of the waterproof nonwoven filter material so as to realize the surface refinement of the nonwoven filter material after drying. The method has the advantages of low drying temperature, low cost and low energy consumption and the like; according to the method, terylene and nylon spun-bonded non-woven clothes which have flat surfaces are selected, the foam emulsion can form a micropore-rich film after being transferred and dried, and the filtering efficiency is improved; and the nonwoven filter is treated by the fluorine-containing waterproof agent, thus being not easily permeated by the foam emulsion, and being beneficial to formation of the micropore-rich film on the surface of the material.
Description
Technical field
The present invention relates to the method for filtering material surface fine, be specifically related to a kind of method of non-woven filter material surface fine.
Background technology
The industry of current China enters the high speed development stage, comprises a large amount of dust granules that discharge in the heavy industry processes such as iron and steel, coal, electric power, chemical industry, causes serious air pollution, and air pollution has become a global problem that needs to be resolved hurrily.Non-woven filter material has been widely used in the air filtration industry because its work flow is short, cost is low, and because its filter process belongs to in-depth filtration, so the difficult deashing of filtrate, service life is short.In addition, because non-woven filtrate aperture is large, filtering accuracy is low.For addressing the aforementioned drawbacks, adopt the filter material surface film coating technique, but in use there are the shortcomings such as resistance is large, energy consumption is high in coated filter material.
Application for a patent for invention (application number 201010185876.X) discloses a kind of method of face coat.Surface coating agent is comprised of polytetrafluoroethyldispersion dispersion, the concentrated dispersion liquid of perfluoroethylene-propylene, blowing agent, thickener, water, foams by the high speed shear effect.Filter material surface after the coating forms one deck microporous barrier, intercepts dust granules and enters filtrate inside, thereby improve filtering accuracy and deashing property;
In addition, also can select silicone-modified polyacrylate emulsion preparation foaming emulsion, realize the surface fine of non-woven filter material.
Summary of the invention
The object of the present invention is to provide a kind of method of non-woven filter material surface fine, adopt the preparation of non-woven filtrate WATER REPELLENT TREATMENT, foam latex, foam latex to shift and the techniques such as waterproof non-woven filter material typing are finished the non-woven filter material surface process that becomes more meticulous.
The technical solution used in the present invention may further comprise the steps:
The WATER REPELLENT TREATMENT of a, non-woven filter material: non-woven filter material is immersed in the aqueous solution of fluorine-containing water repellent, by soaking-roll-baking process, obtain the waterproof non-woven filter material;
The preparation of b, foam latex: silicone-modified polyacrylate emulsion, neopelex, hydroxyethylcellulose, thickener, water are evenly mixed, and injecting compressed air obtains foam latex by the mechanical shearing effect;
C, foam latex are transferred to the typing of waterproof non-woven filter material: adopt blade coating technique that described foam latex is transferred to described waterproof non-woven filter material surface, the dry rear surface fine of realizing non-woven filter material.
Among the described step a, non-woven filter material is terylene spun-bonded non-weaving cloth or polyamide fibre spun-bonded non-woven, and average pore size is 50 ~ 90 microns; The aqueous solution of fluorine-containing water repellent, by the water dilution, the mass concentration of the control fluorine-containing water repellent aqueous solution is 5%-35%; Soak-roll-baking process, dip time is 3-10 minute, and the padding machine pick-up is 2-5%, and stoving temperature is 80-120 ℃, and the time of curing is 20-60 second.
Among the described step b, the solid content of silicone-modified polyacrylate emulsion is 60%-80%; Thickener FTP; The mass fraction of silicone-modified polyacrylate emulsion, neopelex, hydroxyethylcellulose, thickener, water is 1:0.05 ~ 0.15:0.05 ~ 0.25:0.025 ~ 0.05:1 ~ 4.
Among the described step c, the waterproof non-woven filter material behind the blade coating, grammes per square metre is 100 ~ 300g/m
2Baking temperature is 130 ~ 150 ℃, and be 10 ~ 40 seconds drying time.
By the non-woven filter material after the surface fine processing, average pore size is down to 5 ~ 20 microns, is 56 ~ 68% to the filter efficiency of 0.3 micron grain size particle, and filtration resistance is 75 ~ 90Pa.
The beneficial effect that the present invention has is:
(1) owing to select the silicone-modified polyacrylate emulsion among the present invention, make the surface fine process have the advantages such as stoving temperature is low, cost is low, energy consumption is low.
(2) select terylene, polyamide fibre spun-bonded non-woven, its surfacing, after foam latex transfer, drying, emulsion can form the film that is rich in micropore, utilizes just micropore raising filter efficiency in the film.
(3) adopt fluorine-containing water repellent to process non-woven filter material, so foam latex is difficult for infiltrating in the non-woven filter material, the film that is conducive to be rich in micropore forms on the surface.
The specific embodiment
The below is embodiments of the invention.
Embodiment 1:
A, be that to immerse mass fraction be in 5% the TG-410HN aqueous solution for 50 microns terylene spun-bonded non-weaving cloth with average pore size, taking-up is 2% padding machine by pick-up after 3 minutes, terylene spun-bonded non-weaving cloth after processing is placed 80 ℃ oven-baked 20 seconds, obtain the waterproof non-woven filter material;
B, be that 1:0.05:0.05:0.025:1 fully mixes with TF-322C, neopelex, hydroxyethylcellulose, thickener FTP, water by mass fraction, injecting compressed air and mechanical agitation obtain foam latex;
C, the above-mentioned foam latex of 100g is transferred to 1 square metre of waterproof non-woven filter material surface, is placed in 130 ℃ the baking oven dry 10 seconds.
Near 20 microns of terylene spun-bonded cloth average pore size after the processing, filtration resistance is 75Pa when filtering 0.3 micron grain size particle, filter efficiency is 56%.
Embodiment 2:
A, be that 90 microns polyamide fibre spun-bonded non-woven immerses in the aqueous solution that mass fraction is 35% TG-525B and TG-533 (C8) with average pore size, taking-up is 5% padding machine by pick-up after 10 minutes, terylene spun-bonded non-weaving cloth after processing is placed 120 ℃ oven-baked 60 seconds, obtain the waterproof non-woven filter material;
B, be that 1:0.15:0.25:0.05:4 fully mixes with TF-323, neopelex, hydroxyethylcellulose, thickener FTP, water by mass fraction, injecting compressed air and mechanical agitation obtain foam latex;
C, the above-mentioned foam latex of 300g is transferred to 1 square metre of waterproof non-woven filter material surface, is placed in 150 ℃ the baking oven dry 40 seconds.
Near 5 microns of terylene spun-bonded cloth average pore size after the processing, filtration resistance is 90Pa when filtering 0.3 micron grain size particle, filter efficiency is 68%.
Embodiment 3:
A, be that 70 microns terylene spun-bonded non-weaving cloth immerses in the aqueous solution that mass fraction is 20% TG-581 and TG-435 (C8) with average pore size, taking-up is 3% padding machine by pick-up after 5 minutes, terylene spun-bonded non-weaving cloth after processing is placed 100 ℃ oven-baked 40 seconds, obtain the waterproof non-woven filter material;
B, the mixed emulsion with TF-323 and TF-322C, neopelex, hydroxyethylcellulose, thickener FTP, water are that 1:0.1:0.15:0.04:3 fully mixes by mass fraction, and injecting compressed air and mechanical agitation obtain foam latex;
C, the above-mentioned foam latex of 200g is transferred to 1 square metre of waterproof non-woven filter material surface, is placed in 140 ℃ the baking oven dry 30 seconds.
Near 10 microns of terylene spun-bonded cloth average pore size after the processing, filtration resistance is 80Pa when filtering 0.3 micron grain size particle, filter efficiency is 60%.
Described fluorine-containing water repellent is commercially available kind, the mixture of a kind of or the said goods among TG-410HN, the TG-525B that produces such as Zhejiang Province Chuanhua Co., Ltd, TG-533 (C8), TG-581, the TG-435 (C8).
The solid content of silicone-modified polyacrylate emulsion is 60%-80%; Adopt the commercially available prod, such as the mixture of a kind of or the said goods among TF-322C, the TF-323 of Zhejiang Province Chuanhua Co., Ltd.Thickener is commercially available kind, steps the thickener FTP that (Hunsman) company produces such as Hensel.
Claims (5)
1. the method for a non-woven filter material surface fine is characterized in that the method may further comprise the steps:
The WATER REPELLENT TREATMENT of a, non-woven filter material: non-woven filter material is immersed in the aqueous solution of fluorine-containing water repellent, by soaking-roll-baking process, obtain the waterproof non-woven filter material;
The preparation of b, foam latex: silicone-modified polyacrylate emulsion, neopelex, hydroxyethylcellulose, thickener, water are evenly mixed, and injecting compressed air obtains foam latex by the mechanical shearing effect;
C, foam latex are transferred to the typing of waterproof non-woven filter material: adopt blade coating technique that described foam latex is transferred to described waterproof non-woven filter material surface, the dry rear surface fine of realizing non-woven filter material.
2. the method that becomes more meticulous of a kind of non-woven filter material surface according to claim 1, it is characterized in that: among the described step a, non-woven filter material is terylene spun-bonded non-weaving cloth or polyamide fibre spun-bonded non-woven, and average pore size is 50 ~ 90 microns; The aqueous solution of fluorine-containing water repellent, by the water dilution, the mass concentration of the control fluorine-containing water repellent aqueous solution is 5%-35%; Soak-roll-baking process, dip time is 3-10 minute, and the padding machine pick-up is 2-5%, and stoving temperature is 80-120 ℃, and the time of curing is 20-60 second.
3. the method that becomes more meticulous of a kind of non-woven filter material surface according to claim 1, it is characterized in that: among the described step b, the solid content of silicone-modified polyacrylate emulsion is 60%-80%; Thickener FTP; The mass fraction of silicone-modified polyacrylate emulsion, neopelex, hydroxyethylcellulose, thickener, water is 1:0.05 ~ 0.15:0.05 ~ 0.25:0.025 ~ 0.05:1 ~ 4.
4. the method that becomes more meticulous of a kind of non-woven filter material surface according to claim 1 is characterized in that: among the described step c, and the waterproof non-woven filter material behind the blade coating, grammes per square metre is 100 ~ 300g/m
2Baking temperature is 130 ~ 150 ℃, and be 10 ~ 40 seconds drying time.
5. the method that becomes more meticulous of a kind of non-woven filter material surface according to claim 1, it is characterized in that: by the non-woven filter material after the surface fine processing, average pore size is down to 5 ~ 20 microns, is 56 ~ 68% to the filter efficiency of 0.3 micron grain size particle, and filtration resistance is 75 ~ 90Pa.
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| CN201210403430.9A CN102888753B (en) | 2012-10-22 | 2012-10-22 | Method for surface refinement of nonwoven filter material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103820999A (en) * | 2014-02-27 | 2014-05-28 | 江苏东方滤袋有限公司 | Finishing method for bag type dedusting material and prepared dedusting material |
| CN104928931A (en) * | 2015-07-08 | 2015-09-23 | 常州市武进常友无纺布制品厂 | Non-woven fabric for dust collector filtering bag |
| CN105032039A (en) * | 2015-08-26 | 2015-11-11 | 浙江地球村环保科技有限公司 | Novel bamboo fiber air filtration material and preparation method thereof |
| CN106492656A (en) * | 2016-10-31 | 2017-03-15 | 上海佰奥聚新材料科技有限公司 | A kind of porous foam filter membrane |
| CN106811974A (en) * | 2016-12-27 | 2017-06-09 | 科林环保技术有限责任公司 | A kind of technique for improving netted glass fiber filter material skeleton |
| CN106811982A (en) * | 2016-12-27 | 2017-06-09 | 科林环保技术有限责任公司 | A kind of manufacture craft of middle low temperature filtrate |
| CN109464849A (en) * | 2018-12-20 | 2019-03-15 | 合肥合意环保科技工程有限公司 | A kind of two-ply foam coating air filting material, preparation method and application |
| CN116173621A (en) * | 2023-02-16 | 2023-05-30 | 江苏奥凯环境技术有限公司 | Aramid fiber filter material for ultralow emission and production process thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820999A (en) * | 2014-02-27 | 2014-05-28 | 江苏东方滤袋有限公司 | Finishing method for bag type dedusting material and prepared dedusting material |
| CN104928931A (en) * | 2015-07-08 | 2015-09-23 | 常州市武进常友无纺布制品厂 | Non-woven fabric for dust collector filtering bag |
| CN105032039A (en) * | 2015-08-26 | 2015-11-11 | 浙江地球村环保科技有限公司 | Novel bamboo fiber air filtration material and preparation method thereof |
| CN106492656A (en) * | 2016-10-31 | 2017-03-15 | 上海佰奥聚新材料科技有限公司 | A kind of porous foam filter membrane |
| CN106811974A (en) * | 2016-12-27 | 2017-06-09 | 科林环保技术有限责任公司 | A kind of technique for improving netted glass fiber filter material skeleton |
| CN106811982A (en) * | 2016-12-27 | 2017-06-09 | 科林环保技术有限责任公司 | A kind of manufacture craft of middle low temperature filtrate |
| CN106811982B (en) * | 2016-12-27 | 2020-05-22 | 科林环保技术有限责任公司 | Manufacturing process of medium-low temperature filter material |
| CN109464849A (en) * | 2018-12-20 | 2019-03-15 | 合肥合意环保科技工程有限公司 | A kind of two-ply foam coating air filting material, preparation method and application |
| CN116173621A (en) * | 2023-02-16 | 2023-05-30 | 江苏奥凯环境技术有限公司 | Aramid fiber filter material for ultralow emission and production process thereof |
| CN116173621B (en) * | 2023-02-16 | 2023-09-29 | 江苏奥凯环境技术有限公司 | Aramid fiber filter material for ultralow emission and production process thereof |
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| CN102888753B (en) | 2014-05-07 |
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