CN114934355B - Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material - Google Patents
Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material Download PDFInfo
- Publication number
- CN114934355B CN114934355B CN202210498270.4A CN202210498270A CN114934355B CN 114934355 B CN114934355 B CN 114934355B CN 202210498270 A CN202210498270 A CN 202210498270A CN 114934355 B CN114934355 B CN 114934355B
- Authority
- CN
- China
- Prior art keywords
- nano
- preparation
- microporous
- filter material
- melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 77
- 239000000463 material Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 55
- 239000004743 Polypropylene Substances 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 239000002105 nanoparticle Substances 0.000 claims abstract description 35
- 238000003490 calendering Methods 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 238000007664 blowing Methods 0.000 claims abstract description 18
- -1 polypropylene Polymers 0.000 claims abstract description 16
- 229920001155 polypropylene Polymers 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 238000009987 spinning Methods 0.000 claims abstract description 8
- 238000004381 surface treatment Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 20
- 239000011164 primary particle Substances 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- 239000004094 surface-active agent Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000005543 nano-size silicon particle Substances 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 10
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 10
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
- 239000007822 coupling agent Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 10
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 10
- 229920000053 polysorbate 80 Polymers 0.000 claims description 10
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 5
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- 229960003237 betaine Drugs 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 5
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- 229920001285 xanthan gum Polymers 0.000 claims description 5
- 229940082509 xanthan gum Drugs 0.000 claims description 5
- 235000010493 xanthan gum Nutrition 0.000 claims description 5
- 239000000230 xanthan gum Substances 0.000 claims description 5
- 230000004907 flux Effects 0.000 description 12
- 239000000835 fiber Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- 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
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
-
- 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
- D06M10/001—Treatment with visible light, infrared or ultraviolet, X-rays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/0208—Single-component fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0622—Melt-blown
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Materials (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material, which belongs to the technical field of liquid filter materials and comprises the steps of preparing a mixture, spinning, hot air blowing, forming a net, performing surface treatment and calendaring; the preparation method comprises the steps of uniformly mixing the polypropylene resin, the high-surface-energy particles and the induced nanoparticles to obtain a mixture; wherein the mass ratio of the polypropylene resin, the high surface energy particles and the induced nanoparticles is (100-110); the invention can improve the folding forming stability, the dirt containing capacity and the service life of the liquid filtering material and improve the filtering efficiency of 1-2 mu m particles.
Description
Technical Field
The invention relates to the technical field of liquid filter materials, in particular to a preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material.
Background
The liquid filter material makes a great contribution to solving the problems of health, environment, food, drinking water, national safety and the like faced by the world, and particularly, the non-woven liquid filter material based on the melt-blown superfine fiber as the main body structure has obvious structural advantages and excellent application prospects compared with other filter materials because the non-woven liquid filter material has small pore diameter and uniform and isotropic porous structure. <xnotran> , , , , , , , , , . </xnotran>
In the field of large-flux microporous non-woven liquid filter materials, the main performance of domestic products is close to that of imported products. For example, the new filter material developed by the U.S. Finetex technology company using nanofibers is a composite structure product using electrospun nanofiber web and traditional nonwoven fabrics, the Coats TM series of Finetex technology company is used for liquid filtration, and can effectively remove 1-2 μm particles, and the nanoporous nonwoven membrane material produced by the company and the Roki company in cooperation has also been applied to the field of liquid material separation. The Tianjin Taida in China is earlier researched in the field, products of 5-10 mu m are industrialized at present, and the materials of 1-2 mu m have the problems of poor folding forming stability, low filtration efficiency and dirt holding capacity and short service life. More importantly, in the field of preparation of high-precision microporous folded nonwoven filter materials and submicron-pore folded filter membranes, filter material processing techniques are monopolized by international and international companies, such as 3M company, coddebao, ostlon and the like, not only are the price expensive, but also the filter materials are easily restricted by people in a key period. Particularly, with the increasing friction of trade in China and America in recent years, foreign high-technology high-value products stop exporting or tighten exporting in China, and great hidden danger is brought to strategic safety in China.
Therefore, the research and development of a preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material can improve the folding forming stability, the dirt holding capacity and the service life of the liquid filter material, and simultaneously improve the filtering efficiency of 1-2 mu m particles, which is a technical problem to be solved urgently at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the preparation method of the high-flux PP melt-blown nano-microporous folded liquid filter material, which can improve the folding forming stability, the dirt holding capacity and the service life of the liquid filter material and improve the filtering efficiency of 1-2 mu m particles.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material comprises the steps of preparing a mixture, carrying out spinning, carrying out hot air blowing, forming a net, carrying out surface treatment and calendaring.
The preparation method comprises the steps of preparing a mixture, namely uniformly mixing polypropylene resin, high-surface-energy particles and induced nanoparticles to obtain a mixture;
wherein, the mass ratio of the polypropylene resin, the high surface energy particles and the induced nanoparticles is 100-110;
the melt index of the polypropylene resin is 100-120g/10min;
the preparation method of the high surface energy particle comprises the following steps: setting the temperature of a reaction kettle to be 2-5 ℃, adding acrylic acid, maleic anhydride, nano aluminum oxide, titanate coupling agent TMC-TTS, tween 80 and deionized water into the reaction kettle, starting stirring, controlling the stirring speed to be 250-300rpm, heating at the heating speed of 1.2-1.5 ℃/min, heating to 65-70 ℃, stirring at 65-70 ℃ for 30-40min, adding sodium persulfate and isopropanol, continuously stirring at 65-70 ℃ for 20-30min, raising the temperature of the reaction kettle to 75-80 ℃, adding sodium hydroxide and sodium dodecyl sulfate, stirring at 75-80 ℃ for 35-40min, stopping stirring, naturally recovering to room temperature, filtering to obtain primary particles, placing the primary particles at 40-45 ℃ for drying for 2.5-3h, placing the primary particles in liquid carbon dioxide at-70 ℃ to-65 ℃ for treatment for 15-20min, and taking out to obtain high-surface-energy particles;
wherein, the weight ratio of acrylic acid, maleic anhydride, nano alumina, titanate coupling agent TMC-TTS, tween 80, deionized water, sodium persulfate, isopropanol, sodium hydroxide and sodium dodecyl sulfate is (100-110);
the weight ratio of the primary particles to the liquid carbon dioxide is 1.3-1.5;
the preparation method of the induced nanoparticles comprises the following steps: soaking nano silicon dioxide into a surface active agent at 45-50 ℃, standing for 20-30min at 45-50 ℃ to obtain nano particle liquid after surface activation, placing the nano particle liquid after surface activation into a closed container for pressurization treatment, controlling the pressure of the closed container to be 1-1.2MPa, controlling the temperature to be 150-160 ℃, performing pressurization treatment in the closed container for 30-40min, filtering, and placing filter residues at 50-60 ℃ for drying for 3-3.5h to obtain induced nano particles;
the particle size of the nano silicon dioxide is 300-350nm;
the surface active agent comprises the following components in parts by weight: 100-110 parts of deionized water, 5-7 parts of stearic acid, 2-3 parts of xanthan gum, 1-3 parts of sodium thiosulfate and 0.3-0.5 part of betaine;
the weight ratio of the nano silicon dioxide to the surface active agent is 1.3-1.5.
The spinning method comprises the steps of adding a mixture into a double-screw extruder through a metering pump, controlling the temperature of the double-screw extruder to be 230-240 ℃, after extrusion, sending the molten mixture into a spinneret plate through the metering pump and a filter, controlling the temperature of a die head of the spinneret plate to be 260-270 ℃, and extruding primary polymer filaments;
the rotating speed of the metering pump is 14-15rpm.
The hot air blowing is carried out, the primary polymer filaments are subjected to hot air blowing, and the polymer filaments are thinned and elongated under the impact of high-speed hot air flows at two sides to obtain the hot air blown polymer filaments;
the flow rate of the high-speed hot air flow is 680-730m 3 The hot air temperature is 270-280 ℃.
After high-pressure blowing, spraying the polymer filaments subjected to hot air blowing to a web forming curtain to form a web, and performing air suction, cooling and solidification to obtain a liquid filtering base material;
the air suction flow is 2400-2500m 3 The net forming speed is 9-10m/min.
And (3) performing surface treatment, namely performing ultraviolet irradiation on the liquid filtering base material, controlling the wavelength of the ultraviolet to be 260-300nm, controlling the ultraviolet irradiation time to be 35-40min, controlling the temperature during the ultraviolet irradiation to be 45-50 ℃, and finishing the ultraviolet irradiation to obtain the base cloth.
And in the step of calendering, calendering is carried out after 2-3 layers of base fabrics are overlapped, the calendering speed is controlled to be 5.5-6.5m/min, the calendering temperature is 90-95 ℃, the calendering pressure is 2.0-2.5MPa, and the microporous liquid filtering material is obtained after calendering is finished.
Compared with the prior art, the invention has the beneficial effects that:
(1) The preparation method of the high-flux PP melt-blown nano-microporous folding liquid filter material can improve the hydrostatic pressure, longitudinal stiffness, transverse stiffness, air permeability and dirt holding capacity of the liquid filter material, and the gram weight of the liquid filter material prepared by the invention is 80-90g/m 2 Average pore diameter of 1.0-2.0 μm, thickness of 0.19-0.20mm, and hydrostatic pressure of 159-164cmH 2 O, the longitudinal stiffness is 94-98N, the transverse stiffness is 52-58N, the fiber fineness is 1.8-2.2 mu m, the air permeability is 1.5-2.5mm/s, and the dirt receiving capacity is 79-85g/m 2 ；
(2) The preparation method of the high-flux PP melt-blown nano-microporous folding liquid filter material can improve the pure water flux of the liquid filter material and the filtering efficiency of the liquid filter material on particles with the particle size of 1-2 mu m, and the pure water flux of the liquid filter material prepared by the invention is 5450-5550L.m. -2 •h -1 The filtration efficiency of particles with a particle size of 1-2 μm is 95.5-96.2%, and the pure water flux after 24h treatment at 70 ℃ is 5350-5500L.m -2 •h -1 The filtration efficiency of particles with the particle size of 1-2 mu m after being treated for 24 hours at 70 ℃ is 94.2-95.1 percent;
(3) The preparation method of the high-flux PP melt-blown nano-microporous folding liquid filter material can improve the folding forming stability of the liquid filter material, and the pure water flux of a folding filter element prepared from the liquid filter material is 5400-5550L.m -2 •h -1 The filtration efficiency of the filter is 95.1-95.7% for particles with a particle size of 1-2 μm, after treatment for 24h at 70 DEG CThe pure water flux is 5300-5400L.m -2 •h -1 The filtration efficiency of particles with a particle size of 1-2 μm after treatment at 70 deg.C for 24h is 94.0-94.9%, and the pure water flux after normal use for 6 months is 5200-5300L.m -2 •h -1 The filtration efficiency of the particles with the particle size of 1-2 mu m after being normally used for 6 months is 92.9-93.8 percent;
(4) The high-flux PP melt-blown nano-microporous folding liquid filter material prepared by the invention has the advantages that the arrangement and orientation of surface layer fibers are neat, the fiber uniformity is good, and the relationship among the filtration precision, the flux and the pollutant carrying capacity is balanced through the accurate regulation and control of pressure and temperature during rolling.
Drawings
FIG. 1 shows a gram weight of 40g/m prepared in example 1 2 Scanning electron microscope pictures of the base fabric;
FIG. 2 shows a grammage of 45g/m for the preparation of example 2 2 Scanning electron microscope pictures of the base fabric.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described.
Example 1
A preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material comprises the following specific steps:
1. preparing a mixture: uniformly mixing polypropylene resin, high-surface-energy particles and induced nanoparticles to obtain a mixture;
wherein, the polypropylene resin, the high surface energy particles, the mass ratio of the induced nanoparticles is 100;
the melt index of the polypropylene resin is 100g/10min;
the preparation method of the high surface energy particle comprises the following steps: setting the temperature of a reaction kettle to be 2 ℃, adding acrylic acid, maleic anhydride, nano-alumina, titanate coupling agent TMC-TTS, tween 80 and deionized water into the reaction kettle, starting stirring, controlling the stirring speed to be 250rpm, heating at the heating speed of 1.2 ℃/min, stirring at 65 ℃ for 30min, adding sodium persulfate and isopropanol, stirring at 65 ℃ for 20min, raising the temperature of the reaction kettle to 75 ℃, adding sodium hydroxide and sodium dodecyl sulfate, stirring at 75 ℃ for 35min, stopping stirring, naturally returning to room temperature, filtering to obtain primary particles, drying the primary particles at 40 ℃ for 2.5h, placing the primary particles in liquid carbon dioxide at-70 ℃ for processing for 15min, and taking out to obtain high-surface-energy particles;
wherein, the weight ratio of acrylic acid, maleic anhydride, nano alumina, titanate coupling agent TMC-TTS, tween 80, deionized water, sodium persulfate, isopropanol, sodium hydroxide and sodium dodecyl sulfate is 100;
the weight ratio of the primary particles to the liquid carbon dioxide is 1;
the preparation method of the induced nanoparticles comprises the following steps: soaking nano silicon dioxide into a surfactant at 45 ℃, standing for 20min at 45 ℃ to obtain nano particle liquid after surface activation, putting the nano particle liquid after surface activation into a closed container for pressurization treatment, controlling the pressure of the closed container to be 1MPa and the temperature to be 150 ℃, pressurizing in the closed container for 30min, filtering, and putting filter residues at 50 ℃ for drying for 3h to obtain induced nano particles;
the particle size of the nano silicon dioxide is 300nm;
the surface active agent comprises the following components in parts by weight: 100 parts of deionized water, 5 parts of stearic acid, 2 parts of xanthan gum, 1 part of sodium thiosulfate and 0.3 part of betaine;
the weight ratio of the nano silica to the surfactant is 1.3.
2. Spinning: adding the mixture into a double-screw extruder through a metering pump, controlling the temperature of the double-screw extruder to be 230 ℃, after extrusion, feeding the molten mixture into a spinneret plate through the metering pump and a filter, controlling the temperature of a die head of the spinneret plate to be 260 ℃, and extruding primary polymer filaments;
the metering pump speed was 14rpm.
3. Hot air blowing: carrying out hot air blowing on the primary polymer filaments, and thinning and extending the polymer filaments under the impact of high-speed hot air flows at two sides to obtain hot air blown polymer filaments;
the flow rate of the high-speed hot air flow is 680m 3 The hot air temperature is 270 ℃.
4. Forming a net: after high-pressure blowing, spraying the polymer filaments blown by hot air to a web forming curtain for web forming, sucking, cooling and curing to obtain a liquid filtering base material;
the induced draft flow is 2400m 3 The web forming speed is 9m/min.
5. Surface treatment: irradiating the liquid filter substrate with ultraviolet rays at wavelength of 260nm for 35min at 45 deg.C to obtain base cloth with gram weight of 40g/m 2 And performing electron microscope scanning analysis on the base fabric, wherein the analysis result is shown in figure 1, and as can be seen from figure 1, the prepared base fabric has the advantages that the surface fibers are arranged and oriented neatly and the uniformity of the fibers is good.
6. And (3) calendering: and (3) superposing the 2 layers of base cloth prepared in the step 5, then calendering, controlling the calendering speed to be 5.5m/min, the calendering temperature to be 90 ℃, and the calendering pressure to be 2.5MPa, and obtaining the microporous liquid filtering material after calendering.
Example 2
A preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material comprises the following specific steps:
1. preparing a mixture: uniformly mixing polypropylene resin, high-surface-energy particles and induced nanoparticles to obtain a mixture;
wherein, the mass ratio of the polypropylene resin, the high surface energy particles and the induced nanoparticles is 105;
the melt index of the polypropylene resin is 110g/10min;
the preparation method of the high surface energy particle comprises the following steps: setting the temperature of a reaction kettle to be 3 ℃, adding acrylic acid, maleic anhydride, nano-alumina, titanate coupling agent TMC-TTS, tween 80 and deionized water into the reaction kettle, starting stirring, controlling the stirring speed to be 270rpm, heating at the heating speed of 1.3 ℃/min, stirring at 67 ℃ for 35min, adding sodium persulfate and isopropanol, stirring at 67 ℃ for 25min, raising the temperature of the reaction kettle to 77 ℃, adding sodium hydroxide and sodium dodecyl sulfate, stirring at 77 ℃ for 37min, stopping stirring, naturally returning to room temperature, filtering to obtain primary particles, drying the primary particles at 42 ℃ for 2.7h, placing the primary particles in liquid carbon dioxide at-67 ℃ for treatment for 17min, and taking out to obtain high-surface-energy particles;
wherein, the weight ratio of acrylic acid, maleic anhydride, nano alumina, titanate coupling agent TMC-TTS, tween 80, deionized water, sodium persulfate, isopropanol, sodium hydroxide and sodium dodecyl sulfate is 105;
the weight ratio of the primary particles to the liquid carbon dioxide is 1;
the preparation method of the induced nanoparticles comprises the following steps: soaking nano silicon dioxide into a surfactant at 47 ℃, standing for 25min at 47 ℃ to obtain nano particle liquid after surface activation, putting the nano particle liquid after surface activation into a closed container for pressurization treatment, controlling the pressure of the closed container to be 1.1MPa, controlling the temperature to be 155 ℃, carrying out pressurization treatment in the closed container for 35min, filtering, and drying filter residues at 55 ℃ for 3.2h to obtain induced nano particles;
the particle size of the nano silicon dioxide is 320nm;
the surface active agent comprises the following components in parts by weight: 105 parts of deionized water, 6 parts of stearic acid, 2.5 parts of xanthan gum, 2 parts of sodium thiosulfate and 0.4 part of betaine;
the weight ratio of the nano silica to the surfactant is 1.4.
2. Spinning: adding the mixture into a double-screw extruder through a metering pump, controlling the temperature of the double-screw extruder to be 235 ℃, after extrusion, feeding the molten mixture into a spinneret plate through the metering pump and a filter, controlling the temperature of a die head of the spinneret plate to be 265 ℃, and extruding primary polymer filaments;
the rotational speed of the metering pump is 14.5rpm.
3. Hot air blowing: carrying out hot air blowing on the primary polymer filaments, and thinning and extending the polymer filaments under the impact of high-speed hot air flows at two sides to obtain hot air blown polymer filaments;
the flow rate of the high-speed hot air flow is 700m 3 The hot air temperature is 275 ℃.
4. Forming a net: after high-pressure blowing, spraying the polymer filaments subjected to hot air blowing to a web forming curtain for web forming, and performing air suction, cooling and curing to obtain a liquid filtering base material;
the induced draft flow is 2450m 3 The web forming speed is 9.5m/min.
5. Surface treatment: irradiating the liquid filter substrate with ultraviolet rays at wavelength of 280nm for 37min at 47 deg.C to obtain base cloth with gram weight of 45g/m 2 The base cloth is subjected to electron microscope scanning analysis, the analysis result is shown in figure 2, and as can be seen from figure 2, the surface layer fibers of the prepared base cloth are arranged and oriented tidily and have good fiber uniformity.
6. And (3) calendering: and (3) laminating the 2 layers of base cloth prepared in the step 5, then calendering, controlling the calendering speed to be 6m/min, the calendering temperature to be 92 ℃, and the calendering pressure to be 2.3MPa, and obtaining the microporous liquid filtering material after calendering.
Example 3
A preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material comprises the following steps:
1. preparing a mixture: uniformly mixing polypropylene resin, high-surface-energy particles and induced nanoparticles to obtain a mixture;
wherein, the polypropylene resin, the high surface energy particles, the mass ratio of the induced nanoparticles is 110;
the melt index of the polypropylene resin is 120g/10min;
the preparation method of the high surface energy particle comprises the following steps: setting the temperature of a reaction kettle to be 5 ℃, adding acrylic acid, maleic anhydride, nano-alumina, titanate coupling agent TMC-TTS, tween 80 and deionized water into the reaction kettle, starting stirring, controlling the stirring speed to be 300rpm, heating at the heating speed of 1.5 ℃/min, stirring at 70 ℃ for 40min, adding sodium persulfate and isopropanol, continuing stirring at 70 ℃ for 30min, raising the temperature of the reaction kettle to 80 ℃, adding sodium hydroxide and sodium dodecyl sulfate, stirring at 80 ℃ for 40min, stopping stirring, naturally returning to room temperature, filtering to obtain primary particles, drying the primary particles at 45 ℃ for 3h, placing the primary particles in liquid carbon dioxide at-65 ℃ for 20min, and taking out to obtain high-surface-energy particles;
wherein, the weight ratio of acrylic acid, maleic anhydride, nano alumina, titanate coupling agent TMC-TTS, tween 80, deionized water, sodium persulfate, isopropanol, sodium hydroxide and sodium dodecyl sulfate is 110;
the weight ratio of the primary particles to the liquid carbon dioxide is 1.5;
the preparation method of the induced nanoparticles comprises the following steps: soaking nano silicon dioxide into a surfactant at 50 ℃, standing for 30min at 50 ℃ to obtain nano particle liquid after surface activation, putting the nano particle liquid after surface activation into a closed container for pressurization treatment, controlling the pressure of the closed container to be 1.2MPa and the temperature to be 160 ℃, carrying out pressurization treatment in the closed container for 40min, filtering, and drying filter residue at 60 ℃ for 3.5h to obtain induced nano particles;
the particle size of the nano silicon dioxide is 350nm;
the surface active agent comprises the following components in parts by weight: 110 parts of deionized water, 7 parts of stearic acid, 3 parts of xanthan gum, 3 parts of sodium thiosulfate and 0.5 part of betaine;
the weight ratio of the nano silicon dioxide to the surface active agent is 1.
2. Spinning: adding the mixture into a double-screw extruder through a metering pump, controlling the temperature of the double-screw extruder to be 240 ℃, after extrusion, feeding the molten mixture into a spinneret plate through the metering pump and a filter, controlling the temperature of a die head of the spinneret plate to be 270 ℃, and extruding primary polymer filaments;
the rotating speed of the metering pump is 15rpm.
3. Hot air blowing: carrying out hot air blowing on the primary polymer filaments, and thinning and extending the polymer filaments under the impact of high-speed hot air flows at two sides to obtain hot air-blown polymer filaments;
the flow rate of the high-speed hot air flow is 730m 3 The hot air temperature is 280 ℃.
4. Forming a net: after high-pressure blowing, spraying the polymer filaments subjected to hot air blowing to a web forming curtain for web forming, and performing air suction, cooling and curing to obtain a liquid filtering base material;
the air suction flow is 2500m 3 The web forming speed is 10m/min.
5. Surface treatment: irradiating the liquid filter substrate with ultraviolet rays at wavelength of 300nm for 40min at temperature of 50 deg.C to obtain base cloth with gram weight of 45g/m 2 。
6. Calendering: and (3) laminating the 2 layers of base cloth prepared in the step 5, then calendering, controlling the calendering speed to be 6.5m/min, the calendering temperature to be 95 ℃, and the calendering pressure to be 2MPa, and obtaining the microporous liquid filtering material after calendering.
Comparative example 1
The preparation method of the high-flux PP melt-blown nano-microporous folded liquid filter material in the embodiment 1 is adopted, and the difference is that: the step of preparing the mixture in the step 1 omits the addition of high surface energy particles.
Comparative example 2
The preparation method of the high-flux PP melt-blown nano-microporous folded liquid filter material in the embodiment 1 is adopted, and the difference is that: in the step 1 of preparing the mixture, the addition of the induced nano particles is omitted.
Comparative example 3
The preparation method of the high-flux PP melt-blown nano-microporous folded liquid filter material in the embodiment 1 is adopted, and the difference is that: the surface processing of step 5 is omitted.
The liquid filter materials prepared in examples 1 to 3 and comparative examples 1 to 3 were tested for grammage, pore size, thickness, hydrostatic pressure, longitudinal stiffness, transverse stiffness, air permeability, and stain holding capacity, and the test results were as follows:
the pure water flux of the liquid filter materials prepared in examples 1 to 3 and comparative examples 1 to 3, the filtration efficiency of particles having a particle size of 1 to 2 μm, the pure water flux after treatment at 70 ℃ for 24 hours, and the filtration efficiency of particles having a particle size of 1 to 2 μm after treatment at 70 ℃ for 24 hours were tested, and the test results were as follows:
after the liquid filter materials prepared in examples 1 to 3 and comparative examples 1 to 3 were manufactured into a pleated filter element, the pure water flux of the pleated filter element, the filtration efficiency of particles having a particle size of 1 to 2 μm, the pure water flux after treatment at 70 ℃ for 24 hours, the filtration efficiency of particles having a particle size of 1 to 2 μm after treatment at 70 ℃ for 24 hours, the pure water flux after normal use for 6 months, and the filtration efficiency of particles having a particle size of 1 to 2 μm after normal use for 6 months were tested, and the test results were as follows:
all percentages used in the present invention are mass percentages unless otherwise indicated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A preparation method of a high-flux PP melt-blown nano-microporous folded liquid filter material is characterized by comprising the steps of preparing a mixture, carrying out spinning, carrying out hot air blowing, forming a net, carrying out surface treatment and calendaring;
the preparation method comprises the steps of preparing a mixture, namely uniformly mixing polypropylene resin, high-surface-energy particles and induced nanoparticles to obtain a mixture;
wherein, the mass ratio of the polypropylene resin, the high surface energy particles and the induced nanoparticles is 100-110;
the preparation method of the high surface energy particles comprises the following steps: setting the temperature of a reaction kettle to be 2-5 ℃, adding acrylic acid, maleic anhydride, nano aluminum oxide, titanate coupling agent TMC-TTS, tween 80 and deionized water into the reaction kettle, starting stirring, controlling the stirring speed to be 250-300rpm, heating at the heating speed of 1.2-1.5 ℃/min, heating to 65-70 ℃, stirring at 65-70 ℃ for 30-40min, adding sodium persulfate and isopropanol, continuously stirring at 65-70 ℃ for 20-30min, raising the temperature of the reaction kettle to 75-80 ℃, adding sodium hydroxide and sodium dodecyl sulfate, stirring at 75-80 ℃ for 35-40min, stopping stirring, naturally recovering to room temperature, filtering to obtain primary particles, placing the primary particles at 40-45 ℃ for drying for 2.5-3h, placing the primary particles in liquid carbon dioxide at-70 ℃ to-65 ℃ for treatment for 15-20min, and taking out to obtain high-surface-energy particles;
the preparation method of the induced nanoparticles comprises the following steps: soaking nano silicon dioxide into a surface active agent at 45-50 ℃, standing for 20-30min at 45-50 ℃ to obtain nano particle liquid after surface activation, placing the nano particle liquid after surface activation into a closed container for pressurization treatment, controlling the pressure of the closed container to be 1-1.2MPa, controlling the temperature to be 150-160 ℃, performing pressurization treatment in the closed container for 30-40min, filtering, and placing filter residues at 50-60 ℃ for drying for 3-3.5h to obtain induced nano particles;
the composition of the surface active agent in the preparation of the induced nano particle comprises the following components in parts by weight: 100-110 parts of deionized water, 5-7 parts of stearic acid, 2-3 parts of xanthan gum, 1-3 parts of sodium thiosulfate and 0.3-0.5 part of betaine;
and (3) performing surface treatment, namely performing ultraviolet irradiation on the liquid filtering base material, controlling the wavelength of the ultraviolet to be 260-300nm, controlling the ultraviolet irradiation time to be 35-40min, controlling the temperature during the ultraviolet irradiation to be 45-50 ℃, and finishing the ultraviolet irradiation to obtain the base cloth.
2. The method for preparing a high-throughput PP melt-blown nano microporous pleated liquid filter material according to claim 1, wherein in the preparation of the high surface energy particles, the weight ratio of acrylic acid, maleic anhydride, nano alumina, titanate coupling agent TMC-TTS, tween 80, deionized water, sodium persulfate, isopropanol, sodium hydroxide and sodium dodecyl sulfate is (100-110).
3. The method for preparing a high-throughput PP melt-blown nano-microporous folded liquid filter material according to claim 1, wherein the weight ratio of the primary particles to liquid carbon dioxide in the preparation of the high surface energy particles is 1.3-1.5.
4. The method for preparing a high-throughput PP melt-blown nano-microporous folded liquid filter material as claimed in claim 1, wherein the weight ratio of nanosilica to surfactant in the preparation of the induced nanoparticles is 1.3-1.5.
5. The method for preparing a high-throughput PP melt-blown nano-microporous pleated liquid filter material according to claim 1, characterized in that the spinning comprises feeding the mixture into a twin-screw extruder through a metering pump, controlling the temperature of the twin-screw extruder to be 230-240 ℃, feeding the molten mixture into a spinneret after passing through the metering pump and a filter after the extrusion, controlling the die head temperature of the spinneret to be 260-270 ℃, and extruding primary polymer filaments.
6. The preparation method of the high-flux PP melt-blown nano-microporous folded liquid filter material as claimed in claim 1, wherein the calendering is performed after 2-3 layers of base fabrics are laminated, the calendering speed is controlled to be 5.5-6.5m/min, the calendering temperature is 90-95 ℃, the calendering pressure is 2-2.5MPa, and the microporous liquid filter material is obtained after the calendering is finished.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210498270.4A CN114934355B (en) | 2022-05-09 | 2022-05-09 | Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material |
| PCT/CN2023/088577 WO2023216809A1 (en) | 2022-05-09 | 2023-04-17 | Preparation method for high-flux pp melt blown nanoporous folded liquid filtering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210498270.4A CN114934355B (en) | 2022-05-09 | 2022-05-09 | Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114934355A CN114934355A (en) | 2022-08-23 |
| CN114934355B true CN114934355B (en) | 2023-04-07 |
Family
ID=82864975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210498270.4A Active CN114934355B (en) | 2022-05-09 | 2022-05-09 | Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114934355B (en) |
| WO (1) | WO2023216809A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934355B (en) * | 2022-05-09 | 2023-04-07 | 东营俊富净化科技有限公司 | Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1706450B1 (en) * | 2004-01-22 | 2009-03-11 | Dow Corning Corporation | A composition having improved adherence with an addition-curable material and composite article incorporating the composition |
| CN100562541C (en) * | 2007-04-20 | 2009-11-25 | 佛山市华联有机硅有限公司 | Acrylic resin latex modified by fire retardation type organosilicon and preparation method thereof |
| US8873918B2 (en) * | 2008-02-14 | 2014-10-28 | The Curators Of The University Of Missouri | Organosilica nanoparticles and method for making |
| SG175043A1 (en) * | 2009-04-13 | 2011-11-28 | Entegris Inc | Porous composite membrane |
| CN104356621A (en) * | 2014-11-19 | 2015-02-18 | 深圳市中纺滤材无纺布有限公司 | Biodegradable plastic honeycomb core and processing technique thereof |
| JP2018140494A (en) * | 2015-07-23 | 2018-09-13 | コニカミノルタ株式会社 | Functional film and electronic device provided with the same |
| CN106310971B (en) * | 2016-10-09 | 2019-10-29 | 天津工业大学 | The film formula and preparation method of chlorine-containing copolymer hollow-fibre membrane |
| CN107088368B (en) * | 2017-06-13 | 2019-09-13 | 深圳市星源材质科技股份有限公司 | A kind of structure is uniform, highly-breathable is filtered with microporous barrier and preparation method thereof |
| CN109233265B (en) * | 2018-06-07 | 2021-07-20 | 盐城神威制绳有限公司 | Preparation method of super-tough cold-resistant nanoparticle modified nylon composite material |
| CN111035993A (en) * | 2019-11-27 | 2020-04-21 | 东营俊富净化科技有限公司 | Preparation method of nanofiber composite liquid filtering material |
| CN111068404B (en) * | 2019-11-27 | 2021-12-07 | 东营俊富净化科技有限公司 | Preparation method of antibacterial liquid filtering material |
| CN113842707B (en) * | 2021-09-17 | 2023-01-06 | 杭州兴源环保设备有限公司 | High-flux anti-sticking filter cloth for blue algae mud dehydration and preparation method thereof |
| CN114086323B (en) * | 2021-11-12 | 2022-10-11 | 东营俊富净化科技有限公司 | Non-woven fabric for sterilizing and inhibiting bacteria mask and preparation method thereof |
| CN114213591B (en) * | 2022-02-24 | 2022-05-06 | 山东三义集团股份有限公司 | Chlorinated polyethylene graft copolymer and preparation method thereof |
| CN114934355B (en) * | 2022-05-09 | 2023-04-07 | 东营俊富净化科技有限公司 | Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material |
-
2022
- 2022-05-09 CN CN202210498270.4A patent/CN114934355B/en active Active
-
2023
- 2023-04-17 WO PCT/CN2023/088577 patent/WO2023216809A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN114934355A (en) | 2022-08-23 |
| WO2023216809A1 (en) | 2023-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5838868B2 (en) | Cellulose nanofiber film | |
| CN109572082B (en) | Composite fiber membrane capable of being used for high-efficiency low-resistance anti-haze mask | |
| CN114934355B (en) | Preparation method of high-flux PP melt-blown nano-microporous folded liquid filter material | |
| Liu et al. | Liquid crystal microphase separation of cellulose nanocrystals in wet-spun PVA composite fibers | |
| CN101530750A (en) | Preparation method of polytetrafluoroethylene superfine fiber porous membrane | |
| CN1276135C (en) | Regenerable reclaiming type polyvinyl alcohol nano fabric and method for making same | |
| CN103173892A (en) | Preparation method of nano bamboo fiber composite material | |
| CN100516326C (en) | Process for preparing cellulose carbamate fibre | |
| CN112522856A (en) | Metal organic framework and electrospun nanofiber composite protective cover film and preparation | |
| CN111334931A (en) | Novel polypropylene melt-blown fabric formula and processing technology thereof | |
| CN112626641A (en) | Method for preparing fluffy flexible three-dimensional silicon dioxide nano-fibers in one step by template-free method | |
| CN114875573B (en) | Preparation method of SM non-woven fabric for roof anti-skid | |
| CN113442529B (en) | Thermoplastic elastomer toughening film composite fabric | |
| CN112812554A (en) | anti-UV, antibacterial and delustering polyamide chip and preparation method thereof | |
| CN113368712A (en) | Efficient air filtration composite nanofiber membrane and preparation method thereof | |
| CN104451930B (en) | A kind of preparation method of whisker reinforcement regenerated celulose fibre | |
| CN114381864A (en) | Mask melt-blown fabric and manufacturing method thereof | |
| CN106823838A (en) | Desalinization reverse osmosis membrane supporter and preparation method | |
| CN111270423A (en) | Preparation method of non-woven fabric filter material | |
| CN113862818A (en) | Preparation and application method of electret material for degradable resin | |
| KR20110131665A (en) | Filter media using a cellulose nano-fiber and method for preparing the same | |
| CN114941207A (en) | Carbon aerogel melt-blown fabric and preparation method thereof | |
| CN113976086A (en) | MOFs @ nano-cellulose/non-woven fabric composite aerogel and preparation method and application thereof | |
| CN112829408A (en) | Preparation method of high-strength anti-aging anti-clogging reinforced composite geotextile | |
| CN113957703A (en) | Beaded nanofiber material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Preparation method of a high-throughput PP melt blown nanoporous folded liquid filtration material Granted publication date: 20230407 Pledgee: Bank of China Limited Dongying Branch Pledgor: DONGYING JUNFU PURIFICATION TECHNOLOGY CO.,LTD. Registration number: Y2024980008985 |