CN114525674A - High-performance anti-scaling modified filter cloth for vacuum filter and preparation method thereof - Google Patents
High-performance anti-scaling modified filter cloth for vacuum filter and preparation method thereof Download PDFInfo
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- CN114525674A CN114525674A CN202210060514.0A CN202210060514A CN114525674A CN 114525674 A CN114525674 A CN 114525674A CN 202210060514 A CN202210060514 A CN 202210060514A CN 114525674 A CN114525674 A CN 114525674A
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- 239000004744 fabric Substances 0.000 title claims abstract description 117
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000002033 PVDF binder Substances 0.000 claims abstract description 35
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 35
- 238000002791 soaking Methods 0.000 claims abstract description 29
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002105 nanoparticle Substances 0.000 claims abstract description 17
- 239000003607 modifier Substances 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- -1 polypropylene Polymers 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229960003237 betaine Drugs 0.000 claims description 10
- 238000009210 therapy by ultrasound Methods 0.000 claims description 9
- 239000002041 carbon nanotube Substances 0.000 claims description 8
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 230000003373 anti-fouling effect Effects 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 13
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 description 11
- 230000001678 irradiating effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
- D06M10/10—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
- B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/06—Inorganic compounds or elements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Filtering Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention relates to a high-performance anti-scaling modified filter cloth for a vacuum filter and a preparation method thereof, wherein the preparation process comprises the following steps: (1) dispersing an amphoteric polymer modifier and nano particles in deionized water to prepare a modified solution; wherein the mass concentration of the amphoteric polymer modifier is 0.1-2wt%, and the mass concentration of the nano particles is 0.1-5 wt%; (2) soaking the filter cloth into the modified solution prepared in the step (1), taking out after soaking for 1-24h, and then heating for 1-5h at 50-70 ℃; (3) preparing a polyvinylidene fluoride solution with the mass concentration of 0.1-1wt% by taking chloroform as a solvent, and soaking the filter cloth treated in the step (2) into the polyvinylidene fluoride solution for 1-5 hours; (4) and (4) carrying out ultraviolet irradiation on the filter cloth treated in the step (3). The modified filter cloth provided by the invention has the advantages of high water flux, long operation time, high flux recovery rate after cleaning and the like.
Description
Technical Field
The invention relates to a high-performance anti-scaling modified filter cloth for a vacuum filter and a preparation method thereof, belonging to the field of separation.
Background
The vacuum filter is a solid-liquid separation device which utilizes vacuum negative pressure as driving force, and has wide application in the fields of mines, metallurgy, chemical industry, environmental protection, chemical industry, food and the like. However, the filter cloth in the filter is easy to be blocked during the separation process, so that the operation cost of enterprises is increased, and the filter cloth is one of the main problems in the field. The filtrate slurry contains a large amount of metal ions (Na)+、Fe3+、Mg2+、Ca2+Etc.) and multivalent salt ions (CO)3 2-、SO4 2-、PO4 3-Etc.). The ions are precipitated along with the reduction of the temperature in the filtering process, and further, the scale is formed on the surface of the filter cloth of the vacuum filter and blocks the filter cloth.
When the filter cloth is blocked, the filter cloth needs to be replaced periodically or cleaned. For example, CN209828411U discloses a filter cloth cleaning structure of a rubber belt type vacuum filter, which can effectively clean the filter cloth with a surface structure; CN213313720U discloses a high pressure water spraying device for prolonging the service life of filter cloth, which utilizes high pressure water to clean the filter cloth with scale. However, cleaning the filter cloth can suspend operation of the filtering equipment, and the separation time is prolonged, thereby increasing the operation cost of enterprises.
Therefore, the development of a vacuum filter cloth which is not easy to scale and can be operated for a long time is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention aims to provide a high-performance anti-fouling modified filter cloth for a vacuum filter and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing an amphoteric polymer modifier and nano particles in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the nano particles; the mass concentration of the amphoteric polymer modifier in the modification solution is 0.1-2wt%, and the mass concentration of the nano particles is 0.1-5 wt%;
(2) soaking the filter cloth into the modified solution prepared in the step (1), taking out after soaking for 1-24h, and then heating for 1-5h at 50-70 ℃;
(3) preparing a polyvinylidene fluoride solution with the mass concentration of 0.1-1wt% by taking chloroform as a solvent, and soaking the filter cloth treated in the step (2) into the polyvinylidene fluoride solution for 1-5 hours;
(4) and (4) carrying out ultraviolet irradiation on the filter cloth treated in the step (3).
The preparation method of the modified filter cloth comprises the step (1), wherein the amphoteric polymer modifier is one of amphoteric polyacrylamide and polysulfonate betaine.
The preparation method of the modified filter cloth comprises the step (1), wherein the nano particles are one of carbon nano tubes, graphene oxide, silicon dioxide and MXene.
The preparation method of the modified filter cloth comprises the step (2), wherein the filter cloth is made of one of polypropylene, polyethylene, polyphenylene sulfide, polyamide and polyester.
The preparation method of the modified filter cloth is characterized in that the ultraviolet irradiation time in the step (4) is 20 minutes to 2 hours.
The invention also provides high-performance anti-scaling modified filter cloth for the vacuum filter, which is prepared by the preparation method.
The selection of the parameters in the invention is based on the following:
(1) the soaking time of the filter cloth in the modified solution is 1-24 hours. When the soaking time is less than 1 hour, the zwitterion modifier and the nano particles can not effectively cover the surface of the filter cloth; when the soaking time is more than 24 hours, the excessive zwitterionic modifier and the nano particles can reduce the separation performance of the filter cloth.
(2) The heating treatment temperature in the step (2) is 50-70 ℃, and the treatment time is 1-5 hours. When the heat treatment temperature is lower than 50 ℃, the combination of the zwitterion modifier and the nano particles with the filter cloth is not firm; when the temperature is higher than 70 ℃, the separation performance of the modified filter cloth is reduced. When the heat treatment time is less than 1 hour, the combination of the zwitterion modifier and the nano particles with the filter cloth is not firm; when the heat treatment time is longer than 5 hours, the pores of the modified filter cloth collapse, thereby affecting the separation performance thereof.
(3) The soaking time of the filter cloth in the polyvinylidene fluoride solution is 1-5 hours. The soaking time is less than 1 hour, and polyvinylidene fluoride can not effectively cover the surface of the filter cloth; when the soaking time is more than 5 hours, too much polyvinylidene fluoride may reduce the separation performance of the filter cloth.
(4) The ultraviolet irradiation time is 20 minutes to 2 hours. The ultraviolet irradiation time is less than 20 minutes, the crosslinking degree of the amphoteric polymer and the polyvinylidene fluoride is low, and the amphoteric polymer and the polyvinylidene fluoride are easy to fall off from the surface of the filter cloth; the ultraviolet irradiation time is more than 2 hours, and the excessively high degree of crosslinking reduces the separation efficiency of the filter cloth.
The invention principle of the invention is as follows: the amphoteric polymer modifier is mainly used for improving the charge density of the surface of the filter cloth and inhibiting the salt ions in the slurry from being separated out, so that the blockage of the holes of the filter cloth is avoided and the running time is prolonged. Meanwhile, the flux of the filter cloth is improved due to the introduction of the nano particles, and the surface energy of the filter cloth can be reduced by the polyvinylidene fluoride, so that impurities adhered to the surface of the filter cloth are more easily removed in the cleaning process, and the flux recovery rate of the filter cloth is improved.
The invention has the beneficial effects that:
(1) the filter cloth is compositely modified by the amphoteric polymer, the nano particles and the polyvinylidene fluoride, the modified filter cloth has rich surface charge property and anti-adhesion property, and metal ions and salt ions in the filter slurry are not easy to separate out on the surface of the filter cloth under the action of electrostatic force; meanwhile, the introduction of the nano particles and the polyvinylidene fluoride ensures that impurities in the slurry are not easy to adhere to the surface of the filter cloth.
(2) The modified filter cloth prepared by the invention has the advantages of high water flux and high flux recovery rate, and meanwhile, the continuous operation time of the modified filter cloth can reach more than 720 hours, which is far higher than that of the filter cloth of the current commercial vacuum filter, and the modified filter cloth is suitable for being popularized in filter equipment.
(3) The main material of the filter cloth in the market at present is one of polypropylene, polyethylene, polyphenylene sulfide, polyamide and polyester. The technical scheme provided by the invention has good modification effect on the filter cloth made of the materials.
Drawings
Fig. 1 shows the separation performance of the modified filter cloth provided in example 2 during a test period of 200 hours.
Fig. 2 is an SEM image of the surface of the filter cloth provided in example 2 after a 200-hour test.
Fig. 3 is an SEM image of the surface of the filter cloth provided in comparative example 1 after the 200-hour test.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing amphoteric polyacrylamide and carbon nanotubes in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the carbon nanotubes; the mass concentration of the amphoteric polyacrylamide in the modified solution is 0.1wt%, and the mass concentration of the carbon nano tube is 0.1 wt%;
(2) soaking a polypropylene filter cloth into the modified solution prepared in the step (1), taking out after 1 hour, and treating for 1 hour at 50 ℃;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 0.1wt%, and soaking the filter cloth treated in the step (2) in the polyvinylidene fluoride solution for 1 hour;
(4) and (4) irradiating the filter cloth obtained in the step (3) for 20 minutes under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Example 2
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing polysulfonate betaine and graphene oxide in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the graphene oxide; the mass concentration of the polysulfonate betaine in the modified solution is 2wt%, and the mass concentration of the graphene oxide is 5 wt%;
(2) soaking polyethylene filter cloth into the modified solution prepared in the step (1), taking out after 24 hours, and treating at 70 ℃ for 5 hours;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 1wt%, and soaking the filter cloth treated in the step (2) in the polyvinylidene fluoride solution for 5 hours;
(4) and (4) irradiating the filter cloth obtained in the step (3) for 2 hours under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Example 3
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing amphoteric polyacrylamide and silicon dioxide in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the silicon dioxide; the mass concentration of the amphoteric polyacrylamide in the modification solution is 0.4wt%, and the mass concentration of the silicon dioxide is 0.8 wt%;
(2) soaking the polyphenylene sulfide filter cloth into the modified solution prepared in the step (1), taking out after 2 hours, and treating for 3 hours at 60 ℃;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 0.5wt%, and soaking the filter cloth treated in the step (2) in the polyvinylidene fluoride solution for 3 hours;
(4) and (4) irradiating the filter cloth obtained in the step (3) for 40 minutes under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Example 4
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing amphoteric polyacrylamide and MXene in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the MXene; the mass concentration of the amphoteric polyacrylamide in the modified solution is 1wt%, and the mass concentration of MXene is 1 wt%;
(2) soaking polyamide filter cloth into the modified solution prepared in the step (1), taking out after 10 hours, and treating for 5 hours at 50 ℃;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 0.1wt%, and soaking the filter cloth treated in the step (2) in the polyvinylidene fluoride solution for 5 hours;
(4) and (4) irradiating the filter cloth obtained in the step (3) for 1 hour under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Example 5
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing polysulfonate betaine and carbon nanotubes in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the carbon nanotubes; the mass concentration of the polysulfonate betaine is 1wt%, and the mass concentration of the carbon nano tube is 2 wt%;
(2) soaking polyester filter cloth into the modified solution prepared in the step (1), taking out after 10 hours, and treating for 2 hours at 70 ℃;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 0.7wt%, and soaking the filter cloth treated in the step (2) in the polyvinylidene fluoride solution for 3 hours;
(4) and (4) irradiating the filter cloth obtained in the step (3) for 1 hour under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Example 6
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing polysulfonate betaine and silicon dioxide in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the silicon dioxide; the mass concentration of the polysulfonate betaine in the modified solution is 1wt%, and the mass concentration of the silicon dioxide is 5 wt%;
(2) soaking a polyethylene filter cloth into the modified solution prepared in the step (1), taking out after 4 hours, and treating at 50 ℃ for 3 hours;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 0.2wt%, and soaking the filter cloth treated in the step (2) in the polyvinylidene fluoride solution for 1 hour.
(4) And (4) irradiating the filter cloth obtained in the step (3) for 80 minutes under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Example 7
A preparation method of high-performance anti-scaling modified filter cloth for a vacuum filter comprises the following steps:
(1) dispersing polysulfonate betaine and MXene in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the MXene; the mass concentration of the polysulfonate betaine in the modified solution is 1.5wt%, and the mass concentration of MXene is 4 wt%;
(2) soaking a polypropylene filter cloth into the modified solution prepared in the step (1), taking out after 5 hours, and treating for 3 hours at 65 ℃;
(3) dissolving polyvinylidene fluoride in chloroform to prepare a polyvinylidene fluoride solution with the mass concentration of 1wt%, and soaking the filter cloth treated in the step (2) into the polyvinylidene fluoride solution for 2 hours.
(4) And (4) irradiating the filter cloth obtained in the step (3) for 2 hours under ultraviolet rays to obtain the high-performance anti-scaling modified filter cloth for the vacuum filter.
Comparative example 1
505G-150GY filter cloth, manufactured by the Boco company, was purchased.
Verification example 1
The filter cloth of examples 1-7 and comparative example 1 was tested for average water flux, maximum operation time and flux recovery rate according to GB/T24119-.
Watch (A)
Water flux, maximum operation time and flux recovery ratio of filter cloth of examples 1 to 7 and comparative example 1
As can be seen from table 1, the modified filter cloth provided by the present invention has the advantages of excellent water flux, long operation time, high flux recovery rate after cleaning, and the like.
The separation performance of the modified filter cloth provided in example 2 is shown in fig. 1, and it can be seen that the modified filter cloth has a high water flux within a test time of 200 hours.
SEM images of the surfaces of the filter cloths provided in example 2 and comparative example 1 after the 200-hour test are shown in fig. 2 and 3, respectively. As can be seen from FIGS. 2 and 3, after 200 hours of continuous use, the degree of surface contamination of the filter cloth in example 2 was low, and the fiber structure thereof was clearly visible; the degree of surface contamination of the filter cloth in comparative example 1 was high, and the original appearance of the surface of the filter cloth could not be seen clearly.
The disclosed embodiments are intended to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A preparation method of a high-performance anti-scaling modified filter cloth for a vacuum filter is characterized by comprising the following steps:
(1) dispersing an amphoteric polymer modifier and nano particles in deionized water to prepare a modified solution, and performing ultrasonic treatment to uniformly disperse the nano particles; the mass concentration of the amphoteric polymer modifier in the modification solution is 0.1-2wt%, and the mass concentration of the nano particles is 0.1-5 wt%;
(2) soaking the filter cloth into the modified solution prepared in the step (1), taking out after soaking for 1-24h, and then heating for 1-5h at 50-70 ℃;
(3) preparing a polyvinylidene fluoride solution with the mass concentration of 0.1-1wt% by taking chloroform as a solvent, and soaking the filter cloth treated in the step (2) into the polyvinylidene fluoride solution for 1-5 hours;
(4) and (4) carrying out ultraviolet irradiation on the filter cloth treated in the step (3).
2. The method for preparing a high-performance anti-fouling modified filter cloth for a vacuum filter as claimed in claim 1, wherein the amphoteric polymer modifier in step (1) is one of amphoteric polyacrylamide and polysulfonate betaine.
3. The method for preparing a high-performance anti-fouling modified filter cloth for a vacuum filter according to claim 1, wherein the nanoparticles in the step (1) are one of carbon nanotubes, graphene oxide, silicon dioxide and MXene.
4. The preparation method of the high-performance anti-fouling modified filter cloth for the vacuum filter as claimed in claim 1, wherein the material of the filter cloth in the step (2) is one of polypropylene, polyethylene, polyphenylene sulfide, polyamide and polyester.
5. The method for preparing a high-performance anti-fouling modified filter cloth for a vacuum filter as claimed in claim 1, wherein the ultraviolet irradiation time in the step (4) is 20 minutes to 2 hours.
6. A high-performance anti-scaling modified filter cloth for a vacuum filter, which is characterized in that the modified filter cloth is prepared by the preparation method of any one of claims 1 to 5.
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| CN202210060514.0A CN114525674B (en) | 2022-01-19 | 2022-01-19 | High-performance anti-scaling modified filter cloth for vacuum filter and preparation method thereof |
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| CN115445324A (en) * | 2022-08-19 | 2022-12-09 | 河北钢铁集团矿业有限公司 | High-performance filter cloth for bag-type dust remover and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614784A (en) * | 2012-04-05 | 2012-08-01 | 天津工业大学 | Polyvinylidene fluoride-carbon nano tube composite separation film and preparation method thereof |
| CN104028126A (en) * | 2014-05-16 | 2014-09-10 | 浙江大学 | Preparation method of sulfonic acid type amphoteric polyelectrolyte nanoparticle hybrid polyamide nanofiltration membrane |
| CN106632922A (en) * | 2016-10-21 | 2017-05-10 | 苏州科技大学 | Preparation method of block polymer containing hydrophilic segment and method for modifying polyvinylidene fluoride (PVDF) micro-filtration membrane by block polymer |
| CN107138061A (en) * | 2017-05-10 | 2017-09-08 | 浙江工业大学 | The preparation method of the nanometer particle-modified polyamide nanofiltration membrane of in-situ polymerization both sexes polyamine |
| CN108404689A (en) * | 2018-04-28 | 2018-08-17 | 青岛大学 | A kind of graphene oxide/polyacrylamide combined filtration film and its preparation and application |
| CN112604507A (en) * | 2020-12-07 | 2021-04-06 | 四川华造宏材科技有限公司 | Preparation method of high-flux dye separation nanofiltration membrane |
-
2022
- 2022-01-19 CN CN202210060514.0A patent/CN114525674B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614784A (en) * | 2012-04-05 | 2012-08-01 | 天津工业大学 | Polyvinylidene fluoride-carbon nano tube composite separation film and preparation method thereof |
| CN104028126A (en) * | 2014-05-16 | 2014-09-10 | 浙江大学 | Preparation method of sulfonic acid type amphoteric polyelectrolyte nanoparticle hybrid polyamide nanofiltration membrane |
| CN106632922A (en) * | 2016-10-21 | 2017-05-10 | 苏州科技大学 | Preparation method of block polymer containing hydrophilic segment and method for modifying polyvinylidene fluoride (PVDF) micro-filtration membrane by block polymer |
| CN107138061A (en) * | 2017-05-10 | 2017-09-08 | 浙江工业大学 | The preparation method of the nanometer particle-modified polyamide nanofiltration membrane of in-situ polymerization both sexes polyamine |
| CN108404689A (en) * | 2018-04-28 | 2018-08-17 | 青岛大学 | A kind of graphene oxide/polyacrylamide combined filtration film and its preparation and application |
| CN112604507A (en) * | 2020-12-07 | 2021-04-06 | 四川华造宏材科技有限公司 | Preparation method of high-flux dye separation nanofiltration membrane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445324A (en) * | 2022-08-19 | 2022-12-09 | 河北钢铁集团矿业有限公司 | High-performance filter cloth for bag-type dust remover and preparation method thereof |
| CN115445324B (en) * | 2022-08-19 | 2023-08-22 | 河北钢铁集团矿业有限公司 | High-performance filter cloth for bag-type dust collector and preparation method thereof |
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