CN105396375A - Nano-fiber surface layer filtering material and preparation method thereof - Google Patents
Nano-fiber surface layer filtering material and preparation method thereof Download PDFInfo
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- CN105396375A CN105396375A CN201510846063.3A CN201510846063A CN105396375A CN 105396375 A CN105396375 A CN 105396375A CN 201510846063 A CN201510846063 A CN 201510846063A CN 105396375 A CN105396375 A CN 105396375A
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Abstract
The invention discloses a nano-fiber surface layer filtering material which comprises a composite filtering layer and a nano-fiber layer, wherein the composite filtering layer comprises a surface layer, a base cloth layer and a bottom layer; the base cloth layer adopts a warp/weft crossed mesh structure; either the surface layer or the bottom layer adopts a mesh structure formed by disorderly tangling one or more types of fibers; the surface layer, the base cloth layer and the bottom layer are hooked together in a needling manner; the nano-fiber layer is attached onto the surface layer; the nano-fiber layer and the base cloth layer are respectively attached onto two sides of the surface layer; the nano-fiber layer comprises static spinning fibers of which the diameters are 100-200 micrometers; the static spinning fibers are made of one or more of polyphenylene sulfide, polyethylene glycol terephthalate, polytetrafluoroethylene and polyimide. Not only can the application range and occasions of the nano-fiber surface layer filtering material be expanded, but also the internal bonding strength of the nano-fiber surface layer filtering material can be improved.
Description
Technical field
The present invention relates to a kind of nanofiber surface layer filtering material and preparation method thereof, belong to flue dust filtrate product and technology field thereof.
Background technology
China is coal-fired big country, and coal can discharge the pollutants such as a large amount of toxic gases and dust in the process of burning.At present, it is sack cleaner or the electric-bag complex dust collector of core that the capital equipment that China controls the discharge of coal fired thermal power plant burning dust granules is changed into by simple electric cleaner in the past gradually with filter bag, thus reaches the requirement of minimum discharge.But, along with the further raising that national environmental standard requires for dust emission concentration, sack cleaner efficiency of dust collection also urgently improves thereupon further, although concrete policy is not put into effect, but enterprise explicitly calls for dust removing effects to reach ultralow ultra-clean discharge, concentration of emission controls below 10 milligrams, is a challenge for the selection of filtrate and the processing of filter bag.
Chinese patent literature CN101721855A discloses a kind of nano fiber and glass fiber composite filter material and preparation method thereof, its by glass fibre filter material surface in conjunction with one deck nanofiber, thus improve the filter efficiency of glass fibre filtrate.Glass fibre filtrate mentioned in Chinese patent literature CN101721855A only relates to glass fiber filter paper, and this is a kind of, and in fact on the one hand glass fiber filter paper due to the shortcoming of this body structure, restricted application, particularly as: be not suitable for loading that desulfurization is out of stock waits catalyst, glass fiber filter paper is difficult to be applicable to high-pressure filteration occasion etc. due to toughness deficiency; On the other hand glass fiber filter paper due to surface attachment performance more weak, this namely well-known glass fiber filter paper be convenient to the repeatedly used characteristic of deashing, therefore the bond strength of glass fiber filter paper and nanofiber is poor, causes nanofiber surface layer filtering material to be difficult to promote in actual applications.
Summary of the invention
The present invention is just for the deficiency that prior art exists, a kind of nanofiber surface layer filtering material and preparation method thereof is provided, range of application and the occasion of nanofiber surface layer filtering material can be expanded on the one hand, the internal bond strength of nanofiber surface layer filtering material can be improved on the other hand, meet actual operation requirements.
For solving the problem, the technical solution used in the present invention is as follows:
A kind of nanofiber surface layer filtering material, comprising: composite filter and layers of nanofibers;
Described composite filter comprises top layer, base cloth layer and bottom, described base cloth layer is longitude and latitude cross network structure, described top layer and described bottom are the network structure of the unordered entanglement of one or more fibers, described top layer and described bottom are attached to the two sides of described base cloth layer respectively, and described top layer, described base cloth layer and described bottom are linked together mutually by acupuncture;
Described top layer is attached with described layers of nanofibers, described layers of nanofibers and described base cloth layer are attached to the two sides on described top layer respectively, and described layers of nanofibers is diameter forms at the electrospun fibers of 100 ~ 200 microns, the manufactured materials of described electrospun fibers is one or more in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides.
As the improvement of technique scheme, the manufactured materials on described top layer is identical with the manufactured materials of described electrospun fibers.
The preparation method of described a kind of nanofiber surface layer filtering material, comprises the following steps:
Step one, become orderly cancellated base cloth layer by longitude and latitude interlacing, unordered cancellated top layer and bottom is tangled into by combing acupuncture, then described top layer, described base cloth layer and described bottom are mutually linked together by acupuncture, obtained composite filter is for subsequent use;
Step 2, form diameter at the electrospun fibers of 100 ~ 200 micron by injector towards plate ejection of gathering materials by after one or more material molten in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides, nozzle and the described plate that gathers materials of described injector are metallic conductor, and the electrostatic field of the nozzle of described injector and described applying 10 ~ 200,000 volts between plate of gathering materials;
Step 3, electrospun fibers step 2 obtained are attached to by needle point method on the described top layer of the obtained composite filter of step one, to form layers of nanofibers, thus obtained nanofiber surface layer filtering material.
As the improvement of technique scheme, after step 3, also comprise step 4: the nanofiber surface layer filtering material that step 3 is obtained floods post-drying by surface treatment liquid, and described surface treatment liquid comprises the component of following mass fraction: solid content is ptfe emulsion 40 ~ 80 parts, isopropyl alcohol 5 ~ 10 parts, glyceryl triacetate 2 ~ 5 parts, the polymethylphenyl siloxane fluid 5 ~ 10 parts of 60 ~ 70%.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
A kind of nanofiber surface layer filtering material of the present invention and preparation method thereof, can be improved the overall mechanical strength of nanofiber surface layer filtering material, go for high-pressure dust-cleaning environment by the base cloth layer arranging longitude and latitude cross network structure; By the cancellated top layer and bottom that the unordered entanglement of one or more fibers is set can overcome base cloth layer pore size filter excessive and surperficial establishment performance impact, improve filter effect and with layers of nanofibers in conjunction with effect; Identical by the manufactured materials of the manufactured materials with electrospun fibers that make top layer, thus be conducive to improving the bond strength between same material, and strengthen bond strength by acupuncture between layers of nanofibers and top layer.
In addition, the present invention optimally adopts ptfe emulsion process nanofiber surface layer filtering material further, thus the water and oil repellant effect of nanofiber surface layer filtering material can be improved, and adopt the surface treatment liquid of special formulation to make the film forming of ptfe emulsion better, thus improve the surface treatment effect of ptfe emulsion, improve the smooth surface degree of nanofiber surface layer filtering material, reduce running resistance.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of nanofiber surface layer filtering material of the present invention;
Fig. 2 is preparation method's schematic diagram of layers of nanofibers of the present invention;
In figure: 1 is layers of nanofibers, 2 is top layer, and 3 is base cloth layer, and 4 is bottom, and 5 for melt extruding material, and 6 is composite filter, and 7 is injector, and 8 is the plate that gathers materials, and 9 is electric field power supply, and 10 is upstream transfer guide roller, and 11 is downstream transfer guide roller.
Detailed description of the invention
Below in conjunction with specific embodiments content of the present invention is described.
Specific embodiment 1
A kind of nanofiber surface layer filtering material described in the present embodiment, comprising: composite filter and layers of nanofibers 1; Described composite filter comprises top layer 2, base cloth layer 3 and bottom 4, described base cloth layer 3 is longitude and latitude cross network structure, described top layer 2 and described bottom 4 are the network structure of the unordered entanglement of one or more fibers, described top layer 2 and described bottom 4 are attached to the two sides of described base cloth layer 3 respectively, and described top layer 2, described base cloth layer 3 and described bottom 4 are linked together mutually by acupuncture; Described top layer 2 is attached with described layers of nanofibers 1, described layers of nanofibers 1 and described base cloth layer 3 are attached to the two sides on described top layer 2 respectively, and described layers of nanofibers 1 is diameter forms at the electrospun fibers of 100 ~ 200 microns, the manufactured materials of described electrospun fibers is one or more in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides.Further optimally, the manufactured materials on described top layer 2 is identical with the manufactured materials of described electrospun fibers.
The preparation method of a kind of nanofiber surface layer filtering material described in the present embodiment, comprises the following steps:
Step one, become orderly cancellated base cloth layer by longitude and latitude interlacing, unordered cancellated top layer and bottom is tangled into by combing acupuncture, then described top layer, described base cloth layer and described bottom are mutually linked together by acupuncture, obtained composite filter is for subsequent use;
Step 2, form diameter at the electrospun fibers of 100 ~ 200 micron by injector towards plate ejection of gathering materials by after one or more material molten in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides, nozzle and the described plate that gathers materials of described injector are metallic conductor, and the electrostatic field of the nozzle of described injector and described applying 10 ~ 200,000 volts between plate of gathering materials;
Step 3, electrospun fibers step 2 obtained are attached to by needle point method on the described top layer of the obtained composite filter of step one, to form layers of nanofibers, thus obtained nanofiber surface layer filtering material;
Step 4, nanofiber surface layer filtering material obtained for step 3 is flooded post-drying by surface treatment liquid, described surface treatment liquid comprises the component of following mass fraction: solid content is ptfe emulsion 50 parts, isopropyl alcohol 6 parts, glyceryl triacetate 5 parts, the polymethylphenyl siloxane fluid 10 parts of 60 ~ 70%.
Specific embodiment 2
A kind of nanofiber surface layer filtering material described in the present embodiment, its structure is identical with specific embodiment 1.
The preparation method of a kind of nanofiber surface layer filtering material described in the present embodiment, comprises the following steps:
Step one, become orderly cancellated base cloth layer by longitude and latitude interlacing, unordered cancellated top layer and bottom is tangled into by combing acupuncture, then described top layer, described base cloth layer and described bottom are mutually linked together by acupuncture, obtained composite filter is for subsequent use;
Step 2, form diameter at the electrospun fibers of 100 ~ 200 micron by injector towards plate ejection of gathering materials by after one or more material molten in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides, nozzle and the described plate that gathers materials of described injector are metallic conductor, and the electrostatic field of the nozzle of described injector and described applying 10 ~ 200,000 volts between plate of gathering materials;
Step 3, composite filter obtained for step one is laid in described in gather materials plate surface and the one side of plate towards described injector of gathering materials described in being positioned at, and the composite filter making step one obtained is at the uniform velocity by described injector and the described electrostatic field gathered materials between plate, thus the electrospun fibers making step 2 obtain is attached on the described top layer of the obtained composite filter of step one, to form layers of nanofibers;
Step 4, layers of nanofibers step 3 being obtained by acupuncture and described top layer are strengthened combining further, thus obtained nanofiber surface layer filtering material;
Step 5, nanofiber surface layer filtering material obtained for step 4 is flooded post-drying by surface treatment liquid, described surface treatment liquid comprises the component of following mass fraction: solid content is ptfe emulsion 80 parts, isopropyl alcohol 10 parts, glyceryl triacetate 4 parts, the polymethylphenyl siloxane fluid 8 parts of 60 ~ 70%.
Specific embodiment 3
A kind of nanofiber surface layer filtering material described in the present embodiment, its structure is identical with specific embodiment 1.
The preparation method of a kind of nanofiber surface layer filtering material described in the present embodiment, its step one is identical with specific embodiment 1 to step 3, step 4, nanofiber surface layer filtering material obtained for step 3 is flooded post-drying by surface treatment liquid, described surface treatment liquid comprises the component of following mass fraction: solid content is ptfe emulsion 40 parts, isopropyl alcohol 5 parts, glyceryl triacetate 2 parts, the polymethylphenyl siloxane fluid 5 parts of 60 ~ 70%.
Comparative examples
Surface treatment liquid in specific embodiment is replaced with the ptfe emulsion of one-component.
The nanofiber surface layer filtering material skin covering of the surface that then specific embodiment 1 to 3 is obtained is smooth, even; And running resistance more not surface treated nanofiber surface layer filtering material can reduce by 5 ~ 10%;
The nanofiber surface layer filtering material surface film thicknesses that then comparative examples is obtained is uneven; And running resistance more not surface treated nanofiber surface layer filtering material can reduce by 2 ~ 4%.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (5)
1. a nanofiber surface layer filtering material, is characterized in that, comprising: composite filter and layers of nanofibers (1);
Described composite filter comprises top layer (2), base cloth layer (3) and bottom (4), described base cloth layer (3) is longitude and latitude cross network structure, described top layer (2) and described bottom (4) are the network structure of the unordered entanglement of one or more fibers, described top layer (2) and described bottom (4) are attached to the two sides of described base cloth layer (3) respectively, and described top layer (2), described base cloth layer (3) and described bottom (4) are linked together mutually by acupuncture;
Described top layer (2) is attached with described layers of nanofibers (1), described layers of nanofibers (1) and described base cloth layer (3) are attached to the two sides of described top layer (2) respectively, and described layers of nanofibers (1) is formed for the electrospun fibers of diameter at 100 ~ 200 microns, the manufactured materials of described electrospun fibers is one or more in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides.
2. a kind of nanofiber surface layer filtering material as claimed in claim 1, it is characterized in that, the manufactured materials of described top layer (2) is identical with the manufactured materials of described electrospun fibers.
3. the preparation method of a kind of nanofiber surface layer filtering material as claimed in claim 2, is characterized in that, comprise the following steps:
Step one, become orderly cancellated base cloth layer by longitude and latitude interlacing, unordered cancellated top layer and bottom is tangled into by combing acupuncture, then described top layer, described base cloth layer and described bottom are mutually linked together by acupuncture, obtained composite filter is for subsequent use;
Step 2, form diameter at the electrospun fibers of 100 ~ 200 micron by injector towards plate ejection of gathering materials by after one or more material molten in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides, nozzle and the described plate that gathers materials of described injector are metallic conductor, and the electrostatic field of the nozzle of described injector and described applying 10 ~ 200,000 volts between plate of gathering materials;
Step 3, electrospun fibers step 2 obtained are attached to by needle point method on the described top layer of the obtained composite filter of step one, to form layers of nanofibers, thus obtained nanofiber surface layer filtering material.
4. the preparation method of a kind of nanofiber surface layer filtering material as claimed in claim 3, is characterized in that, comprise the following steps:
Step one, become orderly cancellated base cloth layer by longitude and latitude interlacing, unordered cancellated top layer and bottom is tangled into by combing acupuncture, then described top layer, described base cloth layer and described bottom are mutually linked together by acupuncture, obtained composite filter is for subsequent use;
Step 2, form diameter at the electrospun fibers of 100 ~ 200 micron by injector towards plate ejection of gathering materials by after one or more material molten in polyphenylene sulfide, PETG, polytetrafluoroethylene (PTFE) and polyimides, nozzle and the described plate that gathers materials of described injector are metallic conductor, and the electrostatic field of the nozzle of described injector and described applying 10 ~ 200,000 volts between plate of gathering materials;
Step 3, composite filter obtained for step one is laid in described in gather materials plate surface and the one side of plate towards described injector of gathering materials described in being positioned at, and the composite filter making step one obtained is at the uniform velocity by described injector and the described electrostatic field gathered materials between plate, thus the electrospun fibers making step 2 obtain is attached on the described top layer of the obtained composite filter of step one, to form layers of nanofibers;
Step 4, layers of nanofibers step 3 being obtained by acupuncture and described top layer are strengthened combining further, thus obtained nanofiber surface layer filtering material.
5. the preparation method of a kind of nanofiber surface layer filtering material as claimed in claim 3, it is characterized in that, after step 3, also comprise step 4: the nanofiber surface layer filtering material that step 3 is obtained floods post-drying by surface treatment liquid, and described surface treatment liquid comprises the component of following mass fraction: solid content is ptfe emulsion 40 ~ 80 parts, isopropyl alcohol 5 ~ 10 parts, glyceryl triacetate 2 ~ 5 parts, the polymethylphenyl siloxane fluid 5 ~ 10 parts of 60 ~ 70%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510846063.3A CN105396375A (en) | 2015-11-30 | 2015-11-30 | Nano-fiber surface layer filtering material and preparation method thereof |
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| CN201510846063.3A CN105396375A (en) | 2015-11-30 | 2015-11-30 | Nano-fiber surface layer filtering material and preparation method thereof |
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| CN105396375A true CN105396375A (en) | 2016-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898531A (en) * | 2019-12-09 | 2020-03-24 | 安徽省利特环保技术有限公司 | Method for controlling filter diameter of high polymer material for filter cartridge |
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| CN103071339A (en) * | 2013-01-31 | 2013-05-01 | 孙熙 | Fabrication method of needling/spunlace and electrostatic spinning compound filtering material |
| CN204051238U (en) * | 2014-08-11 | 2014-12-31 | 安徽省元琛环保科技有限公司 | A kind of two composition gradient high temperature high efficiency filtrate |
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| JP5177506B2 (en) * | 2008-02-28 | 2013-04-03 | 栗田工業株式会社 | Filter and liquid treatment method |
| CN102304850A (en) * | 2011-08-23 | 2012-01-04 | 江苏东方滤袋有限公司 | Water and oil repellent finishing method for bag type dedusting material |
| CN103071339A (en) * | 2013-01-31 | 2013-05-01 | 孙熙 | Fabrication method of needling/spunlace and electrostatic spinning compound filtering material |
| CN204051238U (en) * | 2014-08-11 | 2014-12-31 | 安徽省元琛环保科技有限公司 | A kind of two composition gradient high temperature high efficiency filtrate |
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| CN110898531A (en) * | 2019-12-09 | 2020-03-24 | 安徽省利特环保技术有限公司 | Method for controlling filter diameter of high polymer material for filter cartridge |
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Address after: 230000, Anhui, Hefei New Station District North Community on the west side of the White Road Applicant after: ANHUI YUANCHEN ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD. Address before: 230000, Anhui, Hefei New Station District North Community on the west side of the White Road Applicant before: Anhui YuanChen Environmental Protention Science and Technology Co., Ltd. |
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Application publication date: 20160316 |