CN110465206A - A kind of townhouse hollow fiber form nonwoven fabrics composite film and preparation method thereof and equipment - Google Patents
A kind of townhouse hollow fiber form nonwoven fabrics composite film and preparation method thereof and equipment Download PDFInfo
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- CN110465206A CN110465206A CN201910719996.4A CN201910719996A CN110465206A CN 110465206 A CN110465206 A CN 110465206A CN 201910719996 A CN201910719996 A CN 201910719996A CN 110465206 A CN110465206 A CN 110465206A
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- woven fabrics
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- townhouse
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 175
- 239000002131 composite material Substances 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 51
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 37
- 239000011159 matrix material Substances 0.000 claims abstract description 85
- 239000012528 membrane Substances 0.000 claims abstract description 64
- 238000005266 casting Methods 0.000 claims abstract description 47
- 230000001112 coagulating effect Effects 0.000 claims abstract description 36
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000007493 shaping process Methods 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000009987 spinning Methods 0.000 claims abstract description 6
- 238000007731 hot pressing Methods 0.000 claims description 78
- 238000007790 scraping Methods 0.000 claims description 13
- 238000005191 phase separation Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- 238000007373 indentation Methods 0.000 claims description 6
- 235000012489 doughnuts Nutrition 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000002759 woven fabric Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 47
- 239000000243 solution Substances 0.000 description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000012360 testing method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229940113088 dimethylacetamide Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000002145 thermally induced phase separation Methods 0.000 description 2
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 2
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000614 phase inversion technique Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229940068918 polyethylene glycol 400 Drugs 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of townhouse hollow fiber form nonwoven fabrics composite film and preparation method thereof and equipment.The equipment includes coagulating bath cabinet, guide roller, wind-up roll, matrix preparation facilities and coating unit；Matrix preparation facilities, coating unit, coagulating bath cabinet, guide roller and wind-up roll are sequentially connected according to spinning direction；Matrix preparation facilities includes that a supporting layer non-woven fabrics places roller, Liang Ge base non-woven fabrics places roller and two arc shaping mechanisms；Coating unit includes that two feed wells and two scrape deflector roll.This method is that the matrix of composite membrane is first prepared by matrix preparation facilities, casting solution is uniformly coated in two side external surfaces of matrix by coating unit again, film layer is formed by coagulating bath curing molding, after being oriented to roller guide, realize that winding obtains townhouse hollow fiber form nonwoven fabrics composite film by wind-up roll.This composite membrane combines the advantage of plate membrane and hollow-fibre membrane.This equipment can be realized the continuous production from matrix to composite membrane.
Description
Technical field
The present invention relates to technical field of membrane, specifically a kind of townhouse hollow fiber form nonwoven fabrics composite film and preparation method thereof
And equipment.
Background technique
With the development of China's economic society, the means such as traditional water purification process such as ion exchange, flocculation sedimentation, chlorination
The requirement of Low investment, low operating cost, reliable and stable and high water quality is had been unable to meet, therefore, new product, the exploitation of new technology are aobvious
It obtains particularly important.Membrane separation technique is an emerging isolation technics, separating medium different from the mechanism of conventional separation techniques
For natural or artificial synthesized film.The new separation technology energy-efficient as one, membrane technology have device volume small, easy
Operation does not generate secondary pollution, the characteristics of low energy consumption, high efficiency, at present in industrial separation processing using extremely wide, can
It include gas phase separation, liquid phase separation, gas-liquid separation, solid- liquid separation etc. with isolated phase, it has also become water treatment field
Core technology of greatest concern.
Currently, membrane structure used in industrial water treatment field is mainly plate membrane and hollow-fibre membrane.Wherein, plate
Film can be made into plate type membrane component and rolled membrane module when membrane module is made, and plate type membrane component needs frame support structure, therefore
It is small that component loads density；Rolled membrane module is since the interlayer space between compound film sheet is too small, backwashing water in use
Flow and flow rate is low, is unfavorable for the antifouling property of composite membrane, influences the service life of film.Relative to plate membrane, doughnut
It is big that film loads density when membrane module is made, but due to general at film dynamic performance, and film can be held in external pressure use process
The anti-collapse ability received is not high, influences filter efficiency, in addition, the hollow-fibre membrane feelings that easy fracture of wire, hardly possible are cleaned in use
Condition equally will affect operational efficiency.
Summary of the invention
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve be to provide a kind of townhouse hollow fiber form without
Woven fabric composite membrane and preparation method thereof and equipment.
It is multiple that the present invention solves the problems, such as that the technical solution of the equipment and technology is to provide a kind of townhouse hollow fiber form non-woven fabrics
Close the Preparation equipment of film, including coagulating bath cabinet, guide roller and wind-up roll, it is characterised in that the equipment includes matrix preparation facilities
And coating unit；Matrix preparation facilities, coating unit, coagulating bath cabinet, guide roller and wind-up roll successively connect according to spinning direction
It connects；
Described matrix preparation facilities includes that a supporting layer non-woven fabrics places roller, Liang Ge base non-woven fabrics places roller and two
Arc shaping mechanism；Coating unit includes that two feed wells and two scrape deflector roll；
Supporting layer non-woven fabrics places roller and places roller for placing supporting layer non-woven fabrics, Liang Ge base non-woven fabrics and be respectively used to put
Set first base's non-woven fabrics and second base's non-woven fabrics；Supporting layer non-woven fabrics place roller be located at Liang Ge base non-woven fabrics placement roller it
Between；It is placed with an arc shaping mechanism in front of the importing direction of first base's non-woven fabrics, another arc shaping mechanism is placed
In front of the importing direction of second base's non-woven fabrics；Be between two arc shaping mechanisms supporting layer non-woven fabrics importing direction before
Side；Arc shaping mechanism includes a convex surface hot-pressing roller and a concave surface hot-pressing roller；Concave surface hot-pressing roller is located at convex surface hot-pressing roller
Front；The surface of convex surface hot-pressing roller has several protrusions, and the surface of concave surface hot-pressing roller has several recess, the position of protrusion and recess
It sets, shape and size matching；Protrusion and recesses, which are closed first base's non-woven fabrics and second base's non-woven fabrics thermocompression forming, is
Arcuate structure；Edge at two concave surface hot-pressing roller surface indentations cooperates, and forms hot-pressing point；Hot-pressing point is used for the first base
Layer non-woven fabrics and the difference hot pressing of second base's non-woven fabrics form matrix in the two sides of supporting layer non-woven fabrics；
Two feed wells are located at the front of respective concave surface hot-pressing roller, for its internal casting solution to be injected the outer of matrix
In surface and the gap for scraping deflector roll；Two are scraped the front that deflector roll is located at feed well, corresponding with the position of respective concave surface hot-pressing roller,
Realize the uniform coating of casting solution；It scrapes and is provided with coagulating bath cabinet, guide roller and wind-up roll in front of deflector roll, realize that casting solution is solid
It is melted into the collection winding of film and film wire.
It is multiple that the technical solution that the present invention solves the method technical problem is to provide a kind of townhouse hollow fiber form non-woven fabrics
It closes the preparation method of film, it is characterised in that this method is: first preparing the matrix of composite membrane by matrix preparation facilities, then pass through painting
Coating device uniformly coats casting solution in two side external surfaces of matrix, is dipped vertically into coagulating bath cabinet and is solidified by coagulating bath
Type forms film layer, after being oriented to roller guide, realizes that winding obtains townhouse hollow fiber form nonwoven fabrics composite film by wind-up roll.
This method is specifically:
The preparation of step 1, composite membrane matrix: supporting layer non-woven fabrics is placed in supporting layer non-woven fabrics and places on roller, the first base
Layer non-woven fabrics and second base's non-woven fabrics are respectively placed in Liang Ge base non-woven fabrics and place on roller；Supporting layer non-woven fabrics is located at first
Between base's non-woven fabrics and second base's non-woven fabrics；First base's non-woven fabrics and second base's non-woven fabrics pass through base's non-woven fabrics
It places roller to import between the convex surface hot-pressing roller and concave surface hot-pressing roller of respective arc shaping mechanism, passes through convex surface hot pressing roller surface
The mutual cooperation thermocompression forming of protrusion and concave surface hot-pressing roller depression in the surface forms arcuate structure；Pass through two concave surface hot-pressing rollers again
First base's non-woven fabrics and second base's non-woven fabrics are distinguished hot pressing by the mutual cooperation for the hot-pressing point that edge is formed at surface indentation
In the two sides of supporting layer non-woven fabrics, matrix is formed；
The preparation of step 2, composite membrane film layer: matrix is sent into two and is scraped between deflector roll, configured casting solution is passed through each
From feed inlet enter in two feed wells, the outer surface of matrix is uniformly squeezed out and is injected by each discharge hole and scrapes deflector roll
Gap in；Have by two surfaces and reeded scrapes deflector roll scraping to the casting solution on two outer surface arcuate structures of matrix
Painting effect, realizes the uniform and symmetrical of coating thickness；
The preparation of step 3, townhouse hollow fiber form nonwoven fabrics composite film: after completing uniformly coating, coated with casting solution
Matrix forms film layer by coagulating bath curing molding, and after being oriented to roller guide, it is hollow to realize that winding obtains townhouse by wind-up roll
Fiber type nonwoven fabrics composite film.
The present invention solves the problems, such as that the technical solution of the composite membrane technology is to provide a kind of townhouse hollow fiber form non-woven fabrics
Composite membrane, it is characterised in that the composite membrane is made of matrix and the film layer being compounded on the outside of matrix.
Compared with prior art, the beneficial effects of the invention are that:
(1) this composite membrane combines the advantage of plate membrane and hollow-fibre membrane, solves plate type membrane component in plate membrane
Load that density is small and rolled membrane module because interlayer space it is small caused by service life problem and doughnut film dynamic performance not
The problem of foot, easy fracture of wire, difficult cleaning.
For the plate membrane of identical size, the arcuate structure of this composite film surface is added significantly to filter area (about
2 times of identical size flat-panel film filter area), improve the filter efficiency of composite membrane in use, hollow structure can be with
The backwashing water flow and flow rate of composite membrane in use is greatly improved, the contamination resistance of composite membrane is greatly improved.
For hollow-fibre membrane, it is hollow that tradition can be greatly improved in the presence of hollow fiber form non-woven fabrics in this composite membrane
The mechanical property of tunica fibrosa, greatly improves anti-collapse ability of the film in external pressure use process, and the design of townhouse formula can also solve
Certainly traditional hollow in the process of running easy fracture of wire, difficult cleaning the problem of.
(2) this method uses the method for first preparing base, rear composite film, can cause phase using non-solvent in actual production
Partition method, thermally induced phase separation, evaporation mutually any one phase separation method in separation and low temperature thermally induced phase separation by casting solution
It is compounded in matrix surface to be filmed, the range of choice of film forming polymer is very extensive, is conducive to opening for multiple use seperation film
Hair and industrialized production.
(3) equipment can be realized the continuous production from matrix to composite membrane, by the casting solution of preparation with phase separation method
It is compounded in townhouse hollow fiber form non-woven fabrics matrix surface；It does not need to handle matrix or cut.It can be realized simultaneously
Symmetrical and casting solution the uniform coating of matrix.
(4) matrix is disposed vertically in two gaps for scraping deflector roll, is produced by semi-automation, and casting solution is quantitatively transported to
In matrix and the gap for scraping deflector roll two sides, casting solution is coated in by matrix surface by the method for striking, is solidified by coagulating bath
Film forming.
Detailed description of the invention
Fig. 1 is the production equipment overall schematic of townhouse hollow fiber form nonwoven fabrics composite film of the invention；
Fig. 2 is that convex surface hot-pressing roller and concave surface hot-pressing roller of the invention cooperate schematic diagram；
Fig. 3 is that two concave surface hot-pressing rollers of the invention cooperate schematic diagram；
Fig. 4 is of the invention two and scrapes deflector roll cooperation schematic diagram；
Fig. 5 is the perspective view of feed well of the invention；
Fig. 6 is the sectional view of feed well of the invention；
Fig. 7 is the structure chart of townhouse hollow fiber form nonwoven fabrics composite film of the invention；
Fig. 8 is the electron microscope for the compound film outer surface that the embodiment of the present invention 1 obtains；
In figure: 1, supporting layer non-woven fabrics places roller；2, base's non-woven fabrics places roller；3, first base's non-woven fabrics；4, second
Base's non-woven fabrics；5, convex surface hot-pressing roller；6, concave surface hot-pressing roller；7, feed well；8, deflector roll is scraped；9, coagulating bath cabinet；10, it is oriented to
Roller；11, wind-up roll；12, supporting layer non-woven fabrics；13, hot-pressing point；14, film layer；15, matrix；16, discharge hole；17, feed inlet；
18, feed well channel.
Specific embodiment
Specific embodiments of the present invention are given below.Specific embodiment is only used for that present invention be described in more detail, unlimited
The protection scope of the claim of this application processed.
The present invention provides a kind of Preparation equipment of townhouse hollow fiber form nonwoven fabrics composite film (abbreviation equipment), including solidifying
Gu bath cabinet body 9, guide roller 10 and wind-up roll 11, it is characterised in that the equipment includes matrix preparation facilities and coating unit；Matrix
Preparation facilities, coating unit, coagulating bath cabinet 9, guide roller 10 and wind-up roll 11 are sequentially connected according to spinning direction；Matrix preparation
Device is located at the first station, and coating unit is located in front of matrix preparation facilities；
Described matrix preparation facilities includes that a supporting layer non-woven fabrics places roller 1, Liang Ge base non-woven fabrics places roller 2 and two
A arc shaping mechanism；Coating unit includes that two feed wells 7 and two scrape deflector roll 8；
Supporting layer non-woven fabrics places roller 1 and places supporting layer non-woven fabrics 12 for winding, and Liang Ge base non-woven fabrics is placed roller 2 and divided
It Yong Yu not wind and place first base's non-woven fabrics 3 and second base's non-woven fabrics 4；Supporting layer non-woven fabrics places roller 1 and is located at two bases
Layer non-woven fabrics is placed between roller 2 so that supporting layer non-woven fabrics 12 be located at first base's non-woven fabrics 3 and second base's non-woven fabrics 4 it
Between；It is placed with an arc shaping mechanism in front of the importing direction of first base's non-woven fabrics 3, another arc shaping mechanism is placed
In front of the importing direction of second base's non-woven fabrics 4；It is the importing side of supporting layer non-woven fabrics 12 between two arc shaping mechanisms
Forwards；Arc shaping mechanism includes a convex surface hot-pressing roller 5 and a concave surface hot-pressing roller 6；Concave surface hot-pressing roller 6 is located at convex surface heat
The front of pressure roller 5 (position between component is determined by spinning direction)；The surface of convex surface hot-pressing roller 5 has several protrusions, recessed
The surface of face hot-pressing roller 6 has several recess, position, quantity, shape, structure and the size matching of protrusion and recess；First base
Layer non-woven fabrics 3 and second base's non-woven fabrics 4 are directed respectively between respective convex surface hot-pressing roller 5 and concave surface hot-pressing roller 6, raised and recessed
Sunken match first base's non-woven fabrics 3 and second base's non-woven fabrics, 4 thermocompression forming is arcuate structure；Two concave surface hot-pressing rollers 6
Edge at surface indentation cooperates, and forms hot-pressing point 13；Hot-pressing point 13 is used for first base's non-woven fabrics 3 and the second base
Non-woven fabrics 4 is bonded in the two sides of supporting layer non-woven fabrics 12 by heat pressing process respectively, forms matrix 15；
Two feed wells 7 are located at the front of respective concave surface hot-pressing roller 6, for its internal casting solution to be injected matrix 15
Outer surface and scrape in the gap of deflector roll 8；Two are scraped the front that deflector roll 8 is located at feed well 7, with respective concave surface hot-pressing roller 6
Position is corresponding, so that the outer surface of matrix 15 is scraped identical at a distance from deflector roll 8 with two, realizes the uniform coating of casting solution, solidification
14 thickness of film layer obtained afterwards is identical；The front for scraping deflector roll 8 is provided with coagulating bath cabinet 9, guide roller 10 and wind-up roll 11, realizes
The collection of casting solution film-forming and film wire is wound.
Preferably, the columns of the doughnut in matrix 15 can be according to the raised quantity and concave surface hot pressing of convex surface hot-pressing roller 5
The number of depressions of roller 6 adjusts, and the size of arcuate structure can be according to the recessed of the bump sizes of convex surface hot-pressing roller 5 and concave surface hot-pressing roller 6
Size adjusting is fallen into, to adapt to the actual needs of production；
Preferably, the radian for scraping deflector roll 8 is identical as the radian of the arcuate structure of matrix 15, and coating thickness can be scraped according to two
The distance between deflector roll 8 is adjusted, and the distance for each scraping the side of deflector roll and matrix 15 adjacent thereto is 0.05mm-
0.15mm；It scrapes deflector roll 8 for two and is located at same level；
Preferably, the feed well 7 has feed inlet 17, several discharge holes 16 and internally positioned several feed well channels
18；Discharge hole 16 is distributed on feed well 7, so that casting solution equably flows to the outer surface of matrix 15 and scrapes the gap of deflector roll 8
In, so that the wave crest and trough of each arcuate structure of matrix 15 can be coated with casting solution, the coating for reaching preliminary is uniformly imitated
Fruit.
Preferably, temperature regulating device and insulating layer (heat-preservation cotton) are installed on feed well 7, casting solution is guaranteed by temperature regulating device
Temperature.Temperature is controlled at 10 DEG C -160 DEG C.
Invention also provides a kind of preparation method of townhouse hollow fiber form nonwoven fabrics composite film (abbreviation method),
Being characterized in that this method is: the matrix 15 of composite membrane is first prepared by matrix preparation facilities, then by coating unit in matrix 15
Two side external surfaces uniformly coat casting solution, be dipped vertically into coagulating bath cabinet 9 and by coagulating bath curing molding formed film layer
14, after the guiding of guide roller 10, realize that winding obtains townhouse hollow fiber form nonwoven fabrics composite film by wind-up roll 11.
Specifically includes the following steps:
The preparation of step 1, composite membrane matrix: supporting layer non-woven fabrics 12 is placed in supporting layer non-woven fabrics and places on roller 1, and first
Base's non-woven fabrics 3 and second base's non-woven fabrics 4 are respectively placed in Liang Ge base non-woven fabrics and place on roller 2；Supporting layer non-woven fabrics 12
Between first base's non-woven fabrics 3 and second base's non-woven fabrics 4；First base's non-woven fabrics 3 and second base's non-woven fabrics 4 are logical
It crosses base's non-woven fabrics placement roller 2 to import between the convex surface hot-pressing roller 5 and concave surface hot-pressing roller 6 of respective arc shaping mechanism, pass through
The protrusion on 5 surface of convex surface hot-pressing roller and the mutual cooperation thermocompression forming of 6 depression in the surface of concave surface hot-pressing roller form arcuate structure；Again
The mutual cooperation of the hot-pressing point 13 formed by edge at two 6 surface indentations of concave surface hot-pressing roller is by first base's non-woven fabrics, 3 He
Second base's non-woven fabrics 4 distinguishes thermo-compression bonding two of the supporting layer non-woven fabrics 12 by importing between two arc shaping mechanisms
Side forms matrix 15；
Preferably, the shape and ruler of the arcuate structure of the arcuate structure of first base's non-woven fabrics 3 and second base's non-woven fabrics 4
It is very little identical；The major semiaxis of matrix 15 is 0.2mm-10mm, semi-minor axis 0.1mm-5mm, first base's non-woven fabrics 3, the second base
Non-woven fabrics 4 and supporting layer non-woven fabrics 12 with a thickness of 0.05mm-0.2mm；
Any non-woven fabrics type of current prior art, such as needle punched non-woven fabrics, spun lacing nonwoven can be used in the non-woven fabrics
Cloth, melt spraying non-woven fabrics, spun-bonded non-woven fabrics etc..
The preparation of step 2, composite membrane film layer: matrix 15 is sent into two and is scraped between deflector roll 8, and configured casting solution is passed through
After spinning pump, filter filtering, entered in two feed wells 7 using nitrogen extruding as power by respective feed inlet 17,
By the effect in its internal feed well channel 18 so that casting solution is uniformly squeezed with same traffic and flow velocity from each discharge hole 16
Out and in the outer surface for being injected into matrix 15 and the gap for scraping deflector roll 8；Has reeded deflector roll 8 of scraping to matrix by two surfaces
The blade coating of casting solution on 15 two outer surface arcuate structures acts on, and realizes the uniform and symmetrical of coating thickness；
The preparation of step 3, townhouse hollow fiber form nonwoven fabrics composite film: after completing uniformly coating, coated with casting solution
Matrix 15 forms film layer 14 by coagulating bath curing molding, after the guiding of guide roller 10, realizes that winding obtains by wind-up roll 11
Townhouse hollow fiber form nonwoven fabrics composite film.
Preferably, the coagulating bath can be used evaporation mutually separate coagulating bath (air), Thermal inactive coagulating bath (no
The coagulating bath, such as ethyl alcohol, triethylene glycol etc. that solventnonsolvent exchange occurs generate phase point by coagulating bath and the casting solution temperature difference
From) or phase separation coagulating bath (percentage be 0-100% DMAC N,N' dimethyl acetamide, N, N- dimethyl methyl
Amide, N-Methyl pyrrolidone, triethyl phosphate, trimethyl phosphate, gamma-butyrolacton, dimethyl sulfoxide or dimethyl sulfone water
Solution).The temperature of coagulating bath is 4 DEG C -90 DEG C.
Preferably, if coagulating bath is solvent aqueous solution, after composite membrane leaves coagulating bath, place after need to being made of pure water further
Reason；If coagulating bath is pure water, do not need to do further work-up with pure water.
Preferably, the casting solution includes film forming polymer, solvent and pore-foaming agent；Phase separation method can be used in film forming polymer
The film forming polymer that can be used, specially Kynoar, polysulfones, polyether sulfone, polyvinyl chloride, polypropylene, polyethylene, poly- methyl
At least one of methyl acrylate or cellulose acetate etc.；The solvent that phase separation method can use, specially N can be used in solvent,
N- dimethyl acetamide, N,N-dimethylformamide, N-Methyl pyrrolidone, triethyl phosphate, trimethyl phosphate, γ-Ding Nei
At least one of ester, dimethyl sulfoxide or dimethyl sulfone etc.；The pore-foaming agent that phase separation method can use can be used in pore-foaming agent, specifically
For at least one of polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene glycol oxide or dimethyl sulfone etc.；It is described at
Membrane polymer accounts for the 10%-50% of casting solution gross mass, and solvent accounts for the 40%-90% of casting solution gross mass, and pore-foaming agent accounts for casting film
The 0-30% of liquid gross mass, the quality sum of three are 100%；The solution temperature of casting solution is 20 DEG C -160 DEG C.
Invention also provides a kind of townhouse hollow fiber form nonwoven fabrics composite films (abbreviation composite membrane), it is characterised in that
The composite membrane is made of matrix 15 and the film layer 14 being compounded on the outside of matrix 15.
Embodiment 1
The preparation of step 1, composite membrane matrix: being placed in supporting layer non-woven fabrics for supporting layer non-woven fabrics 12 and place on roller 1, the
One base's non-woven fabrics 3 and second base's non-woven fabrics 4 are respectively placed in Liang Ge base non-woven fabrics and place on roller 2；Supporting layer non-woven fabrics
12 between first base's non-woven fabrics 3 and second base's non-woven fabrics 4；First base's non-woven fabrics 3 and second base's non-woven fabrics 4 are
Roller 2 is placed by base's non-woven fabrics to import between the convex surface hot-pressing roller 5 and concave surface hot-pressing roller 6 of respective arc shaping mechanism, is led to
The mutual cooperation thermocompression forming of the protrusion and 6 depression in the surface of concave surface hot-pressing roller of crossing 5 surface of convex surface hot-pressing roller forms arcuate structure；
The mutual cooperation of the hot-pressing point 13 formed again by edge at two 6 surface indentations of concave surface hot-pressing roller is by first base's non-woven fabrics 3
With the difference hot pressing of second base's non-woven fabrics 4 in the two sides of supporting layer non-woven fabrics 12, matrix 15 is formed；
The supporting layer non-woven fabrics 12, first base's non-woven fabrics 3 and second base's non-woven fabrics 4 are using poly terephthalic acid
The needle thorn or spunlace non-woven cloth of two ester material of second preparation；
Hot-pressing point temperature is 270 DEG C；
The arcuate structure of first base's non-woven fabrics 3 is identical as the shape and size of arcuate structure of second base's non-woven fabrics 4；
The major semiaxis of matrix 15 be 1.5mm, semi-minor axis 1.1mm, first base's non-woven fabrics 3, second base's non-woven fabrics 4 and supporting layer without
Woven fabric 12 with a thickness of 0.1mm；
The preparation of step 2, composite membrane film layer: matrix 15 be sent into two scrape between deflector roll 8, each scrape deflector roll 8 and with its phase
The distance of the side of adjacent matrix 15 is 0.12mm, and configured casting solution is entered two chargings by respective feed inlet 17
In slot 7, by the uniform outer surface for squeezing out and being injected into matrix 15 of each discharge hole 16 and the gap for scraping deflector roll 8；By two
A surface has reeded deflector roll 8 of scraping and acts on the blade coating of the casting solution on two outer surface arcuate structures of matrix 15, realizes
Coating thickness it is uniform and symmetrical；
Casting solution proportion is film forming polymer Kynoar: solvent DMAC N,N' dimethyl acetamide: pore-foaming agent polyethylene glycol
400 mass ratio is 16:79:5；
The preparation of step 3, townhouse hollow fiber form nonwoven fabrics composite film: after completing uniformly coating, coated with casting solution
Matrix 15 forms film layer by 25 DEG C of coagulating bath curing molding, after the guiding of guide roller 10, is realized and is wound by wind-up roll 11
Obtain townhouse hollow fiber form nonwoven fabrics composite film.
Compound film outer surface is porous structure it can be seen from Fig. 8.
Comparative example 1
Using document, " Wang Jianming, Lv Xiaolong, Wu Chunrui wait the preparation of reducing Pvdf Microporous Hollow Fiber Membrane and its performance
Study [J] membrane science and technology, 2012,32 (5): 39-44. " disclosed in number be M1.0 film product.
Comparative example 2
Using document " Moghareh Abed M R, Kumbharkar S C, Groth A M, et
al.Ultrafiltration PVDF hollow fibre membranes with interconnected
bicontinuous structures produced via a single-step phase inversion technique
[J] .Journal of Membrane Science, 2012,407-408:145-154. " disclosed in number be HTPEG1's
Film product.
Table 1 is the film properties of embodiment 1, comparative example 1 and comparative example 2.
Test method: pure water flux is film-made evaluating apparatus using laboratory certainly.The precompressed at 0.15MPa before film forming is tested
20min, then tests water flux at 20 DEG C of room temperature with 0.10MPa transmembrane pressure, and testing time 10min is tested five times and taken
Average value.
Mei Tesi industrial system (China) Co., Ltd CMT4503 type microcomputer controlled electronic universal tester is used in air
Under the conditions of test composite membrane mechanical property.Testing length and test width are respectively 30mm, 20mm, the thickness vernier calliper of film
Ruler is measured, and test temperature is 25 DEG C, rate of extension 10mm/min, is tested five times and is averaged.
The fracture pressure of composite membrane is tested by the way of internal pressure.
The anti-collapse ability of composite membrane is tested by the way of external pressure.
Table 1
As can be seen from Table 1, the composite membrane of embodiment 1 at 0.1MPa pure water flux up to 197L/ (m2H), it is higher than
The pure water flux of comparative example 1 and 2.Due to the presence of non-woven fabrics, the ultimate strength of composite membrane does not have in full test range (50N)
It measures, much higher than the mechanical property of comparative example 1 and 2；The fracture pressure of composite membrane is same in full test range (0.6MPa)
Sample is not measured, the same mechanical property for being much higher than comparative example 1 and 2；The anti-collapse ability of composite membrane is in full test range
It is not measured in (0.6MPa), much higher than the anti-collapse ability (being usually no more than 0.15MPa) of comparative example 1 and 2.
The present invention does not address place and is suitable for the prior art.
Claims (10)
1. a kind of Preparation equipment of townhouse hollow fiber form nonwoven fabrics composite film, including coagulating bath cabinet, guide roller and wind-up roll,
It is characterized in that the equipment includes matrix preparation facilities and coating unit；Matrix preparation facilities, coating unit, coagulating bath cabinet,
Guide roller and wind-up roll are sequentially connected according to spinning direction；
Described matrix preparation facilities includes that a supporting layer non-woven fabrics places roller, Liang Ge base non-woven fabrics places roller and two arcs
Shaping mechanism；Coating unit includes that two feed wells and two scrape deflector roll；
Supporting layer non-woven fabrics places roller for placing supporting layer non-woven fabrics, and Liang Ge base non-woven fabrics places roller and is respectively used to placement the
One base's non-woven fabrics and second base's non-woven fabrics；Supporting layer non-woven fabrics is placed roller and is located between Liang Ge base non-woven fabrics placement roller；
It is placed with an arc shaping mechanism in front of the importing direction of first base's non-woven fabrics, another arc shaping mechanism is placed in the
In front of the importing direction of two base's non-woven fabrics；It is in front of the importing direction of supporting layer non-woven fabrics between two arc shaping mechanisms；
Arc shaping mechanism includes a convex surface hot-pressing roller and a concave surface hot-pressing roller；Before concave surface hot-pressing roller is located at convex surface hot-pressing roller
Side；The surface of convex surface hot-pressing roller has several protrusions, and the surface of concave surface hot-pressing roller has several recess, the position of protrusion and recess
It sets, shape and size matching；Protrusion and recesses, which are closed first base's non-woven fabrics and second base's non-woven fabrics thermocompression forming, is
Arcuate structure；Edge at two concave surface hot-pressing roller surface indentations cooperates, and forms hot-pressing point；Hot-pressing point is used for the first base
Layer non-woven fabrics and the difference hot pressing of second base's non-woven fabrics form matrix in the two sides of supporting layer non-woven fabrics；
Two feed wells are located at the front of respective concave surface hot-pressing roller, for its internal casting solution to be injected to the outer surface of matrix
With in the gap for scraping deflector roll；Two are scraped the front that deflector roll is located at feed well, corresponding with the position of respective concave surface hot-pressing roller, are realized
The uniform coating of casting solution；It scrapes and is provided with coagulating bath cabinet, guide roller and wind-up roll in front of deflector roll, realize that casting solution is solidified into
The collection of film and film wire is wound.
2. the Preparation equipment of townhouse hollow fiber form nonwoven fabrics composite film according to claim 1, it is characterised in that matrix
In the columns of doughnut can be adjusted according to the raised quantity of convex surface hot-pressing roller and the number of depressions of concave surface hot-pressing roller, arc knot
The size of structure can be according to the bump sizes of convex surface hot-pressing roller and the recess size adjusting of concave surface hot-pressing roller.
3. the Preparation equipment of townhouse hollow fiber form nonwoven fabrics composite film according to claim 1, it is characterised in that knifing
The radian of arcuate structure of radian and matrix of roller is identical, and coating thickness can scrape the distance between deflector roll according to two and be adjusted
It is whole；It scrapes deflector roll for two and is located at same level；Scraped with two identical at a distance from deflector roll in the outer surface of matrix.
4. the Preparation equipment of townhouse hollow fiber form nonwoven fabrics composite film according to claim 1, it is characterised in that described
Feed well has feed inlet, several discharge holes and internally positioned several feed well channels；Discharge hole is distributed on feed well, is made
Casting solution equably flows to the outer surface of matrix and scrapes in the gap of deflector roll；Temperature regulating device and heat preservation are installed on feed well
Layer guarantees the temperature of casting solution by temperature regulating device.
5. a kind of preparation method of townhouse hollow fiber form nonwoven fabrics composite film, it is characterised in that this method is: first by matrix system
Standby device prepares the matrix of composite membrane, then uniformly coats casting solution in two side external surfaces of matrix by coating unit, vertically
It immerses in coagulating bath cabinet and film layer is formed by coagulating bath curing molding, after being oriented to roller guide, realized and rolled up by wind-up roll
Around obtaining townhouse hollow fiber form nonwoven fabrics composite film.
6. the preparation method of townhouse hollow fiber form nonwoven fabrics composite film according to claim 5, it is characterised in that the party
Method is specifically:
The preparation of step 1, composite membrane matrix: supporting layer non-woven fabrics be placed in supporting layer non-woven fabrics place roller on, the first base without
Woven fabric and second base's non-woven fabrics are respectively placed in Liang Ge base non-woven fabrics and place on roller；Supporting layer non-woven fabrics is located at the first base
Between non-woven fabrics and second base's non-woven fabrics；First base's non-woven fabrics and second base's non-woven fabrics pass through base's non-woven fabrics and place
Roller imports between the convex surface hot-pressing roller and concave surface hot-pressing roller of respective arc shaping mechanism, passes through the protrusion of convex surface hot pressing roller surface
Arcuate structure is formed with the mutual cooperation thermocompression forming of concave surface hot-pressing roller depression in the surface；Pass through two concave surface hot pressing roller surfaces again
First base's non-woven fabrics and second base's non-woven fabrics are distinguished hot pressing and propped up by the mutual cooperation for the hot-pressing point that recess edge is formed
The two sides of layer non-woven fabrics are supportted, matrix is formed；
The preparation of step 2, composite membrane film layer: matrix is sent into two and is scraped between deflector roll, configured casting solution is passed through respective
Feed inlet enters in two feed wells, and the outer surface of matrix is uniformly squeezed out and be injected by each discharge hole and scrapes the seam of deflector roll
In gap；Has the reeded blade coating work for scraping deflector roll to the casting solution on two outer surface arcuate structures of matrix by two surfaces
With realizing the uniform and symmetrical of coating thickness；
The preparation of step 3, townhouse hollow fiber form nonwoven fabrics composite film: after completing uniformly coating, the matrix coated with casting solution
Film layer is formed by coagulating bath curing molding, after being oriented to roller guide, realizes that winding obtains townhouse doughnut by wind-up roll
Formula nonwoven fabrics composite film.
7. the preparation method of townhouse hollow fiber form nonwoven fabrics composite film according to claim 5, it is characterised in that first
The arcuate structure of base's non-woven fabrics is identical as the shape and size of arcuate structure of second base's non-woven fabrics.
8. the preparation method of townhouse hollow fiber form nonwoven fabrics composite film according to claim 5, it is characterised in that described
Coagulating bath can be used air, the coagulating bath of solventnonsolvent exchange not occur or the coagulating bath of phase separation.
9. the preparation method of townhouse hollow fiber form nonwoven fabrics composite film according to claim 5, it is characterised in that described
Casting solution includes film forming polymer, solvent and pore-foaming agent；The film forming polymer that phase separation method can use can be used in film forming polymer；
The solvent that phase separation method can use can be used in solvent；The pore-foaming agent that phase separation method can use can be used in pore-foaming agent；The film forming is poly-
The 10%-50% that object accounts for casting solution gross mass is closed, solvent accounts for the 40%-90% of casting solution gross mass, and it is total that pore-foaming agent accounts for casting solution
The 0-30% of quality, the quality sum of three are 100%.
10. prepared by a kind of preparation method according to any townhouse hollow fiber form nonwoven fabrics composite film of claim 5-9
Obtained townhouse hollow fiber form nonwoven fabrics composite film, it is characterised in that the composite membrane is by matrix and the film being compounded on the outside of matrix
Layer composition.
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