KR101601174B1 - Roll Type Liquid Treating Chemical Filter and Method of Manufacturing the Same - Google Patents

Abstract

The present invention relates to a roll-type liquid-processing chemical filter and a method of manufacturing the same, and more particularly, to a filter structure in which an inorganic polymer film laminated with a nanofiber web and a channel sheet is rolled to allow a liquid to repeatedly enter and exit the nanofiber web By the implementation, the structural characteristics of the unique filter can greatly improve the filtration efficiency of the liquid, and the surface filtration and deep filtration of the liquid with the fine pores of the three-dimensional network structure of the nanofiber web, The ion-exchange resin particles dispersed outside can filter specific ions of the chemical substance contained in the liquid.

Description

Technical Field [0001] The present invention relates to a roll type liquid treatment chemical filter,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roll-type liquid-handling chemical filter and a method of manufacturing the same, and more particularly, to an inorganic polymer film laminated with a nanofiber web and a flow- By implementing the filter structure, the filtration efficiency of the liquid can be improved remarkably by the structural characteristic of the unique filter, and the liquid is subjected to surface filtration and deep filtration with the fine pores of the three-dimensional network structure of the nanofiber web, The present invention relates to a roll type liquid treatment chemical filter capable of filtering specific ions of a chemical substance contained in a liquid by ion exchange resin particles dispersed inside or outside the fiber, and a method for producing the same.

Recently, the problem of environmental pollution has been greatly increased due to the expansion of industrial scale due to economic growth and the concentration of large cities and factories. Water pollution has become a serious problem, and in the case of drinking water, it is essential to purify water through a water purifier.

The water purifier is essentially provided with a filter for filtering raw water, and the filter is formed by filtering water such as a nonwoven filter, an activated carbon filter, an activated carbon fiber (ACF) filter, a hollow fiber membrane filter, an ion exchange resin filter, Various water filters are applied according to the method and step.

Currently, carbon filters are used as materials or filters that remove heavy metals and metallic ion components present in water from water purifiers.

Activated carbon is a special carbon that is calcined at high temperature using mainly coconut shell, wood, coal, etc. as a raw material. It means a collection of amorphous carbon with well-developed fine pores of molecular size formed during the activation process. It is possible to adsorb and remove various pollutants present in the water due to the adsorption characteristics based on the wide internal surface area of activated carbon, and it is widely used in this field due to excellent residual chlorine, organic matter adsorption and deodorization performance.

In general, activated carbon is an adsorbent having an internal surface area of 800 to 1200 m < 3 > / g. However, most of the adsorption occurs when the functional group of the carbon atom existing in the activated carbon exerts an attractive force on the surrounding liquid or gas, Is a physical adsorption. There is a need for a filter capable of chemically adsorbing specific ions rather than physical adsorption, thereby removing heavy metals and metallic ion components present in water.

In general, the treatment methods of water pollutants include coprecipitation using wastewater treatment coagulant, flotation method by specific gravity difference, bioconcentration method, and ion exchange sorption method, but ion exchange sorption method is known as the most effective method.

Korean Patent Laid-Open Publication No. 2011-85096 proposes a composite filter in which activated carbon fibers and ion exchange fibers are laminated on the side wall of the housing. However, the size of the filter is large in the form of a composite filter capable of downsizing the water purifier, to be.

Korean Patent Registration No. 507969 discloses a method of producing a web by forming a web of ion exchange fiber on an ion exchange nonwoven fabric, sprinkling ion exchange resin on the web, placing an ion exchange nonwoven fabric thereon, There has been proposed a technique of removing ionic gas such as acidic or alkaline present in a clean room of a semiconductor manufacturing process. However, it has a disadvantage in that it can not filter ionic gas and filter chemical ions contained in the liquid.

On the other hand, microporous membranes have been used in material separation processes and are manufactured by various methods to have various structures and functions. Among them, research on water treatment membranes has been started for a long time.

BACKGROUND ART [0002] Membrane technology has been widely used in the field of liquid treatment such as removal of contaminants in liquids or separation, concentration and recovery of useful substances as membrane manufacturing technology and application technology are developed remarkably.

Membrane technology is replacing existing technologies due to constant performance and stability due to membrane pore size, convenience due to automation, and simple system.

Conventionally, membranes used in liquid filters include porous membranes and calendered nonwovens.

The porous membrane is a membrane that forms a membrane by using a polymer material such as PTFE, nylon, or polysulfone, and then forms pores by a chemical or physical method. Since the pore structure at this time is a closed pore structure having a two-dimensional shape, the filter efficiency is low.

In the past, when a hydrophobic polymer such as PTFE is used, since the pore structure has a closed pore structure having a two-dimensional shape, since the liquid does not pass therethrough, it is used as a filter requiring pressure, , And low volume is pointed out as a problem.

Furthermore, the thickness of the porous membrane is thicker because the thickness of the porous material is 100 μm depending on the material. Therefore, there is a problem that it is difficult to bend the porous membrane filter material and to introduce a large amount of arsenic into the filter.

On the other hand, the calendered nonwoven fabric forms fibers by, for example, melt-blown spinning of polypropylene as a polymer material, but since the size is in micro units, it does not have microscopic pores and fibers are not uniformly distributed The pores are uneven, and the pollutants are concentrated through the large pores and the filter efficiency is low.

In addition, the calender nonwoven fabric has an average pore size of 5 to 20 μm, and excessive calendering is required to reduce the average pore size of the filter to 3 μm or less. However, since excessive calendering prevents voids and reduces porosity, if the calendered nonwoven fabric is used as a liquid treatment filter, the filter pressure is high and the pores are blocked quickly, which causes problems in the filter life.

Therefore, even if a liquid processing module is manufactured using existing membrane technology, there is a problem that fluid flow is reduced due to membrane clogging and operation pressure is increased.

This clogging phenomenon is particularly serious in high concentration fluids, and it is impossible to apply the membrane technology to high concentration and high turbidity fluids, and the pores are gradually widened, resulting in poor durability.

Accordingly, it is urgently required to develop a membrane having a high filtration efficiency and a high filtration efficiency depending on the pore size as a thin membrane having a micropore structure so that it can be used for liquid treatment.

Korean Patent Laid-Open Publication No. 2008-60263 discloses a nonwoven fabric comprising at least one nanofiber layer of polymer nanofibers having an average fiber diameter of less than about 1 占 퐉 and having an average flow pore size of about 0.5 占 퐉 to about 5.0 占 퐉 , A solids content of from about 15% to about 90% by volume, and a flow rate of water through the medium at differential pressures of 10 psi (69 kPa) greater than about 0.055 L / min / cm ² .

The manufacturing method of the filtration medium proposed in the above-mentioned Patent Publication No. 2008-60263 includes a radiation beam including at least one radiation beam including a radiation nozzle, a blowing gas injection nozzle and a collector, Blown together with a blowing gas discharged from a gas injection nozzle while compressing and discharging a polymer solution from a spinning nozzle to form a fibrous web of nanofibers using a fine fiber spinning apparatus in which a high voltage electric field is maintained, And is collected on the moving collecting device by a single pass under the radiation beam.

In addition, in JP-A-2008-60263, there is illustrated an example of forming a web by spinning nanofibers using a solution containing 24% by weight of nylon in formic acid as a polymer solution by an electroblow spinning or an electric blowing method .

However, the method of forming the fibrous web of nanofibers in the above-mentioned Patent Publication No. 2008-60263 can not be said to be a manufacturing technique using a multi-hole spinning pack. In order to increase the productivity, when a nanofiber web is manufactured by an electrospinning method using an electrospinning device equipped with a plurality of spinning nozzles in a plurality of rows and columns and using a multi-hole spinning pack in which each nozzle is spinning, The spinning solution containing the polymer in an amount of 10 to 30% by weight has a problem in that the viscosity of the spinning solution is increased to cause solidification on the surface of the solution, making it difficult to spin for a long period of time and increase the fiber diameter.

Moreover, ultrafine fiber webs obtained by electrospinning have a problem in that when the pretreatment process for appropriately adjusting the amounts of the solvent and moisture remaining on the web surface is not performed before calendering, the strength of the web is weakened Or if the volatilization of the solvent is made too slow, the phenomenon of melting of the web may occur.

On the other hand, a filter material for a liquid filter using electrospun nanofiber web described in Korean Patent Publication No. 2012-02491 filed by the present applicant, a method for producing the same, and a liquid filter using the filter material have a three-dimensional microporous structure So that the filter efficiency can be maximized with high efficiency and long life.

 Therefore, it is possible to produce a filter for a liquid using such a multi-layered nanofiber web. However, the filter for liquid does not have a filter function of a chemical substance contained in the liquid, so that specific ions of a chemical substance contained in the liquid are filtered It is required to carry out research in a direction in which a liquid filter can be manufactured so as to have the function of being able

The inventors of the present invention have conducted research with a feature of filtering a specific ion of a chemical substance in a liquid filter using a multi-layered nanofiber web according to this direction, and have found that a more economical liquid chemical compound Thus completing the present invention.

Korea Patent Publication No. 2011-85096 Korean Patent No. 507969 Korean Patent Publication No. 2008-60263 Korean Patent No. 2012-02491

As described above, the filter to which the ion-exchange fiber is applied is large in size and does not filter the chemical ions contained in the liquid. The filtration membrane of the liquid treatment membrane has a low filtering efficiency, and the fibrous web obtained by electrospinning has a fibrous shape There is a problem that can not be made.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art, and it is an object of the present invention to provide a method and an apparatus for separating a nanofiber web from a nanofiber web, And to provide a roll type liquid treatment chemical filter capable of remarkably improving the filtering efficiency by implementing a filter structure and a manufacturing method thereof.

It is another object of the present invention to provide a filter structure capable of repeatedly introducing and extracting a liquid web into and out of a nanofiber web by a simple rolling process, thereby improving the filtering efficiency of the liquid with a structural characteristic of a unique filter, Filter and a method of manufacturing the same.

It is another object of the present invention to provide a nanofiber web having three-dimensional micropores, which can be subjected to surface filtration and deep filtration of a liquid, and is contained in a liquid as ion exchange resin particles dispersed in the nanofiber or outside of the nanofiber web Which is capable of filtering specific ions of a chemical substance, and a process for producing the same.

It is still another object of the present invention to provide a roll-type liquid processing chemical filter capable of improving the reliability of chemical filtering by preventing movement of ion exchange resin particles that can be flowed by electric spraying, and a method of manufacturing the same.

It is still another object of the present invention to provide a roll-type liquid processing chemical filter capable of performing various filtering functions by designing the thickness of the web and the diameter of the nanofibers differently, and a method of manufacturing the same.

Another object of the present invention is to provide a roll type liquid treatment chemical filter capable of guiding nanofibers or injected beads radiated by air spinning and spraying to minimize spinning or jetting trouble, Method.

According to an embodiment of the present invention, there is provided an inorganic polymer film; A nanofiber web comprising nanofibers of a polymer substance formed on the inorganic hollow polymer film and having fine pores and ion exchange resin particles dispersed inside or outside the nanofiber; And a flow path sheet attached to the nanofiber web and having a flow path through which the liquid passes, wherein the inorganic polymer film laminated with the nanofiber web and the flow path sheet is rolled Thereby providing a roll type liquid treatment chemical filter.

The flow path sheet is characterized by being a porous sheet or a mesh sheet.

Wherein the roll type liquid processing chemical filter has a structure in which the introduced liquid is filtered while repeatedly introducing and exiting the nanofiber web and the flow path sheet.

The ion exchange resin particles are characterized by particles of a porous organic polymer having ion exchange ability or particles of a copolymer of polystyrene and divinylbenzene.

Wherein when the ion exchange resin particles are dispersed in the nanofiber, a part of the ion exchange resin particles is exposed on the surface of the nanofiber.

According to an embodiment of the present invention, there is provided a method of manufacturing an inorganic polymer film, Forming a nanofiber web in which the ion exchange resin particles are dispersed in nanofibers by electrospinning a spinning solution mixed with a polymer material, a solvent, and ion exchange resin particles to the inorganic polymer film; Attaching a flow sheet having a flow path through which the liquid flows to the nanofiber web; And rolling the inorganic hollow polymer film in which the nanofiber web and the flow path sheet are laminated. The present invention also provides a method of manufacturing a roll type liquid processing chemical filter.

According to an embodiment of the present invention, there is provided a method of manufacturing an inorganic polymer film, Forming a first nanofiber web by electrospinning a spinning solution mixed with a polymer material and a solvent on the inorganic polymer film; Dispersing the ion exchange resin particles on the outside of the nanofibers of the first nanofiber web by spraying a solution of the mixture of the ion exchange resin particles and the solvent on the first nanofiber web; Forming a second nanofiber web by electrospinning a spinning solution mixed with a polymer material and a solvent onto the first nanofiber web; Attaching the second nanofibrous web to the second nanofibrous web; And rolling the inorganic co-polymer film in which the first and second nanofiber webs and the flow path sheet are laminated. The present invention also provides a method of manufacturing a roll type liquid processing chemical filter.

The step of preparing the inorganic hollow polymeric film comprises: electrospinning a spinning solution mixed with a polymer material and a solvent to form a nanofiber web for a film made of nanofibers; Characterized in that the inorganic polymer film is formed by calendering or heat-treating the web.

The spinning solution further contains ion exchange resin particles, and the ion exchange resin particles are dispersed in the nanofibers of the first and second nanofiber webs.

As described above, in the present invention, it is possible to improve filtering efficiency by implementing a filter structure in which a liquid can repeatedly enter and exit the nanofiber web by a simple rolling process.

In the present invention, the filtration efficiency can be remarkably improved by filtering the liquid in the filter structure repeatedly repeating the path from the flow path sheet to the nanofiber web and the path from the nanofiber web to the flow path sheet.

In the present invention, surface filtration and deep filtration of a liquid are performed with a nanofiber web having three-dimensional micropores, and ion-exchange resin particles dispersed in the inside or outside of the nanofiber web nanofiber are used to determine the specific Ions can be filtered.

In the present invention, the second nanofiber web may be laminated on the first nanofiber web to improve the reliability of the chemical filtering in order to prevent the movement of the ion-exchange resin particles sprayed on the first nanofiber web.

In the present invention, the thickness of the web or the diameter of the nanofibers may be different from that of the nanofiber web structure to perform various filtering functions.

The present invention has the effect of minimizing radiation or jetting trouble by guiding nanofibers or injected beads emitted by air spinning and spraying.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing a manufacturing process of a liquid processing chemical filter using an inorganic hollow polymer film according to a first embodiment of the present invention;
2 is a conceptual diagram for explaining a liquid treatment chemical filter using an inorganic hollow polymer film according to the first embodiment of the present invention,
3 is a partial plan view of an example of a mesh sheet applied to the liquid treatment chemical filter according to the first embodiment of the present invention,
FIG. 4 is a conceptual sectional view for explaining a principle of an example in which process water is filtered in a liquid processing chemical filter using an inorganic co-polymer film according to the first embodiment of the present invention;
5 is a schematic view of an electrospinning device applied to the first embodiment of the present invention,
FIG. 6 is a flow chart of a manufacturing process of a liquid processing chemical filter using an inorganic hollow polymer film according to a second embodiment of the present invention,
7A to 7C are conceptual cross-sectional views illustrating a process for producing a nanofiber web having ion-exchange resin particles applied according to a second embodiment of the present invention,
8 is a schematic view of an electrospinning and electrospray apparatus applied to a second embodiment of the present invention.

In the present invention, an inorganic hollow polymer film in which a nanofiber web and a flow sheet are laminated is rolled to form a path through which the liquid travels from the flow path sheet to the nanofiber web, and a path from the nanofiber web to the flow path sheet repeatedly. Thereby manufacturing a liquid processing chemical filter capable of improving the filtering efficiency.

In the present invention, a nanofiber web in which ion exchange resin particles are dispersed in a nanofiber is electrospun by a spinning solution in which a polymer substance, an ion exchange resin particle and a solvent are mixed to form a nanofiber web, A liquid treatment chemical filter capable of filtering specific ions of a chemical substance contained in a liquid is produced at the same time as surface filtration and deep filtration of liquid with pores.

In the present invention, a first spinning solution is prepared by mixing a polymer material and a solvent, a first spinning solution is first electrospun to form a first nanofiber web, and an ion exchange resin particle and a solvent are mixed to prepare a solution The ion exchange resin particles are dispersed in the first nanofibrous web by performing electric spraying on the separation liquid, the second spinning solution is prepared by mixing the polymer material and the solvent, and the second spinning solution is subjected to second electrospinning A second nanofiber web is formed on the first nanofiber web in which the ion exchange resin particles are dispersed to prepare a liquid treatment chemical filter capable of preventing the ejected ion exchange resin particles from being detached from the nanofiber web.

The polymeric material used in the present invention is capable of electrospinning, for example, a hydrophilic polymer and a hydrophobic polymer, and one or more of these polymers may be used in combination.

The polymer material usable in the present invention is not particularly limited as long as it is soluble in an organic solvent for electrospinning and is capable of forming nanofibers by electrospinning. For example, polyvinylidene fluoride (PVdF), poly (vinylidene fluoride-co-hexafluoropropylene), perfluoropolymers, polyvinyl chloride, polyvinylidene chloride or copolymers thereof, polyethylene glycol di Polyoxyethylene-polyoxypropylene oxide, polyethylene glycol derivatives including alkyl ethers and polyethylene glycol dialkyl esters, polyoxides including poly (oxymethylene-oligo-oxyethylene), polyethylene oxide and polypropylene oxide, polyvinyl acetate, poly (vinylpyrrolidone- Vinyl acetate), polystyrene and polystyrene acrylonitrile copolymers, polyacrylonitrile (PAN), polyacrylonitrile copolymers including polyacrylonitrile methyl methacrylate copolymers, polymethyl methacrylate, polymethyl methacrylate Acrylate copolymer or a mixture thereof.

Examples of usable polymer materials include polyamide, polyimide, polyamideimide, poly (meta-phenylene isophthalamide), polysulfone, polyetherketone, polyetherimide, polyethylene terephthalate, , Aromatic polyesters such as polyethylene naphthalate, polyphosphazenes such as polytetrafluoroethylene, polydiphenoxaphospazene, poly {bis [2- (2-methoxyethoxy) Polyurethane copolymers including polyether urethanes, cellulose acetate, cellulose acetate butyrate, and cellulose acetate propionate.

Of the above polymer materials, PAN, polyvinylidene fluoride (PVdF), polyester sulfone (PES) and polystyrene (PS) may be used alone or polyvinylidene fluoride PVdF) and polyacrylonitrile (PAN), PVDF, PES, PVdF and thermoplastic polyurethane (TPU) may be mixed and used.

Accordingly, the polymer usable in the present invention is not particularly limited to thermosetting and thermosetting polymers capable of electrospinning.

For the solvent to be mixed with the polymer substance for preparing the spinning solution, a mono-component solvent such as dimethylformamide (DMF) may be used. In the case of using the two-component solvent, the boiling point it is preferable to use a two-component solvent in which the higher and the lower one are mixed.

In the two-component mixed solvent according to the present invention, the high boiling point solvent and the low boiling point solvent are preferably mixed in a weight ratio of 7: 3 to 9: 1.

In the present invention, the ion exchange resin may be a cation exchange resin or an anion exchange resin.

That is, in the present invention, the ion-exchange resin particles may be defined as having an ion-exchangeable functional group on the inner surface, and may include a cation-exchange resin, anion-exchange resin, and positive-tone exchange resin depending on the ion to be exchanged .

More specifically, in the present invention, PSDVB, which is a porous organic polymer having an ion exchange capacity or a copolymer of polystyrene and divinylbenzene, is made into particles, and the particles and a solvent are mixed to prepare a liquid dispersion.

FIG. 1 is a flow chart showing a manufacturing process of a liquid processing chemical filter using an inorganic hollow polymer film according to a first embodiment of the present invention. FIG. 2 is a view showing a liquid processing chemical filter using an inorganic hollow polymer film according to the first embodiment of the present invention. FIG. 3 is a partial plan view of an example of a mesh sheet applied to a liquid processing chemical filter according to the first embodiment of the present invention, and FIG. 4 is a cross- A conceptual sectional view for explaining the principle of an example in which process water is filtered in a liquid processing chemical filter using a polymer film.

Referring to FIG. 1, an inorganic hollow polymer film is prepared (S100). Then, a spinning liquid is prepared by mixing a polymer material, a solvent, and ion exchange resin particles (S110). The spinning solution is placed in the spinning liquid tank 1 of FIG. 3 to be electrospun and then subjected to electrospinning (S120) to form the nanofiber web 7. The ion exchange resin particles are dispersed in the nanofiber of the nanofiber web 7 and some of the ion exchange resin particles are exposed on the surface of the nanofiber to filter specific ions contained in the treated water . Subsequently, the nanofiber web 7 is adhered to the flow path sheet in which the flow path through which the process water flows is provided (S130). This process realizes a chemical filter filter structure in which the nanofiber web 7 and the flow sheet are sequentially laminated on the inorganic hollow polymer film. Subsequently, rolling the chemical filter media structure (S140) completes the manufacture of a roll-type liquid treatment chemical filter.

The inorganic hollow polymer film is prepared by electrospinning a spinning solution containing a mixture of a polymer material and a solvent to form a nanofiber web for a film made of nanofibers and forming a nanofiber web for the film at a temperature lower than the melting point of the polymer (for example, PVDF) Or by performing heat treatment, a polymer film of an inorganic porous material can be produced. The reason why heat treatment can be performed at a temperature slightly lower than the melting point of the polymer in the heat treatment step is that the solvent remains in the nanofiber web and the inorganic fiber film is formed while the nanofiber web is completely melted by the heat treatment .

2, when the chemical filter media having the structure in which the nanofiber web 520 and the channel sheet 530 are sequentially laminated on the inorganic hollow polymer film 510 is rolled, the center of the rolled chemical filter media The inorganic filler polymer film 510 and the nanofiber web 520 and the flow sheet 530 are continuously repeated in the circumferential direction of the nanofiber web 520 and the flow path 530, It becomes possible to implement the chemical filter 500 having the structure in which the inorganic hollow polymer film 510 is repeated.

When the treatment water is supplied to one side of the chemical filter 500, the purified water is discharged to the other side of the chemical filter 500. That is, the treated water is introduced into the nanofiber web through the flow path of the channel sheet 530 on one side of the chemical filter 500, and the treated water is subjected to surface filtration and deep- Filtration. In addition, the ion exchange resin particles exposed to the nanofibers of the nanofiber web can filter specific ions of chemical substances contained in the treatment water, thereby improving the filtering efficiency.

Referring to FIGS. 3 and 4, a porous sheet or a mesh sheet can be applied to the flow path sheet. The mesh sheet may be defined as a structure in which through holes 532 of the same size are regularly arranged on a sheet 531 as shown in FIG. 3. A porous sheet (not shown) may be defined by a plurality of irregular- Are arranged.

The chemical filter according to the present invention is implemented by a structure in which a nanofiber web and a flow-through sheet are sequentially laminated on an inorganic hollow polymer film in a roll shape. Thus, as shown in FIG. 4, The water 531 is interposed between the inorganic hollow polymer films 510 and the treated water flows only to the nanofiber web 520 and the flow path sheet 531. That is, when the treated water is injected in the 'A' direction as one side of the chemical filter, it flows into the through hole 532a of the nanofiber web 520 or the flow path sheet 531. At this time, if the through hole 532a of the flow path sheet 531 is filled with treated water, the treated water of the through hole 532a has a 'B' path penetrating into the nanofiber web 520, Passes through the 'C' path to the empty through-hole '532b'. When the process water is filled again in the through hole 532b, the treated water has a 'D' path penetrating into the nanofiber web 520.

Therefore, the treated water injected into the chemical filter of the present invention passes through the through holes 532a and 532b of the flow path sheet 531 and passes through the nanofiber web 520 to the paths B and D, The path C is repeated while continuing to pass through the through hole 532b of the flow path sheet 531 and is purified and discharged in the direction 'K' which is the other side of the chemical filter, so that the filtering efficiency can be improved.

5 is a schematic view of an electrospinning apparatus applied to the first embodiment of the present invention.

5, the electrospinning apparatus of the present invention comprises a spinning liquid tank 1 for storing a polymer material, ion exchange resin particles, a spinning solution mixed with a solvent, and a plurality of spinning nozzles (not shown) connected to a high voltage generator And a multi-hole radiation pack 40 having a plurality of rows 41a, 41b, 41c, 41d arranged in multiple rows / multiple rows.

The radiation pack 40 is disposed above a grounded collector 6 in the form of a conveyor moving at a constant speed and a plurality of spinning nozzles 41a, 41b, 41c and 41d are arranged at intervals And the plurality of spinning nozzles 41a, 41b, 41c, and 41d are arranged at intervals along the direction orthogonal to the traveling direction of the collector 6 (i.e., the width direction of the collector). FIG. 5 shows that four spinning nozzles 41a, 41b, 41c and 41d are arranged at intervals along the advancing direction of the collector 6 for convenience of explanation.

The spinning nozzles 41a, 41b, 41c and 41d arranged along the traveling direction of the collector 6 can be arranged, for example, 30-60, or more if necessary, It is possible to increase the rotation speed of the collector 6 and to increase the productivity.

The spinning liquid tank 1 can contain an agitator 2 using a mixing motor 2a as a driving source and is connected to the spinning nozzles 41 to 44 of each row through a metering pump It is connected.

The polymer spinning solution sequentially discharged from the four spinning nozzles 41a, 41b, 41c and 41d is discharged to the ultrafine fibers 5 while passing through the spinning nozzles 41a, 41b, 41c and 41d charged by the high voltage generator. The nanofiber web 7, in which the ion exchange resin particles are dispersed in the nanofiber, is formed by sequentially accumulating microfine fibers in the inorganic hollow polymer film on the grounded collector 6 of the conveyor type moving at a constant speed do.

FIG. 6 is a flow chart of a manufacturing process of a liquid treatment chemical filter using an inorganic hollow polymer film according to a second embodiment of the present invention, and FIGS. 7A to 7C are cross- Sectional view for explaining a manufacturing process of a nanofiber web.

Referring to FIG. 6, an inorganic polymer film is prepared (S200), a spinning solution is prepared by mixing a polymer material and a solvent, and then a spinning solution is first electrospun to form a first nanofiber web (S210) . Subsequently, the ion exchange resin particles are dispersed in the nanofibers of the first nanofiber web by mixing the ion exchange resin particles and the solvent to prepare a dispersion solution, and spraying the dispersion solution (S220). Subsequently, a spinning solution in which a polymer material and a solvent are mixed is subjected to second electrospinning to a first nanofiber web to form a second nanofiber web (S230). Then, the flow path sheet is attached to the second nanofiber web (S240). An inorganic hollow polymer film in which the first and second nanofiber webs and the flow path sheet are laminated is rolled (S250) to produce a chemical filter. Herein, the spinning solution used for the first and second electrospinning may further contain ion-exchange resin particles. In this case, as the ion-exchange resin particles dispersed in the nanofibers of the first and second nanofiber webs, The efficiency of the chemical filter can be further improved.

In addition, in the present invention, electrospinning and electrospinning can be applied to all of the spinning and spraying processes using electricity, and in particular, the electrospinning process can be applied to electrospinning, air-electrospinning (AES) centrifugal electrospinning, flash-electrospinning, or the like.

7A to 7C, the first spinning solution is electrospun in the spinning nozzle 41 to form a first nanofibrous web 100 made of nanofibers 110 (FIG. 7A), and the injection nozzles 42 The ion exchange resin particles 300 are placed on the first nanofiber web 100 (FIG. 7B). Herein, the liquid fraction is injected in the bead 310 state from the injection nozzle 42, and most of the solvent is volatilized as the injected bead descends to the first nanofiber web 100, ) Is placed on the first nanofiber web (100). Thereafter, the second spinning solution is electrospun by the spinning nozzle 43 to laminate the second nanofiber web 200 made of the nanofibers 210 in the first nanofiber web 100 (FIG. 7C).

In the present invention, the thickness of the first nanofibrous web 100 and the thickness of the second nanofibrous web 200 may be designed differently in order to impart various filtering functions of the liquid treatment chemical filter, The diameters of the nanofibers 110 of the web 100 and the diameters of the nanofibers 210 of the second nanofibrous web 200 may be the same or different.

Therefore, in the second embodiment of the present invention, the liquid fraction mixed with the ion exchange resin particles and the solvent is injected in the bead state from the injection nozzle, and when the injected bead reaches the first nanofiber web, most of the solvent is volatilized do. Therefore, the ion exchange resin particles are segregated and dispersed in various positions of the first nanofiber web in a dispersed state.

Since the beads injected from the injection nozzle contain most of the ion exchange resin particles in a state in which the solvent surrounds the ion exchange resin particles and the solvent is volatilized as the first nanofiber web is lowered, The size of the beads originally injected from the nozzle is the largest, and the size of the beads adjacent to the first nanofiber web is smaller than the size of the beads originally injected from the injection nozzle. Upon reaching the first nanofiber web, most of the solvent is volatilized and the ion exchange resin particles are deposited and distributed at various locations on the first nanofiber web.

On the other hand, in the second embodiment of the present invention, the ion exchange resin particles are randomly dispersed outside the nanofibers of the first nanofiber web. In the state where the ion exchange resin particles are seated on the first nanofiber web , It is possible that the ion exchange resin particles migrate due to external force and are concentrated in a local region. In this case, in the region where the ion exchange resin particles are not distributed, the untreated water passes through as it is, and the chemical filtering efficiency is lowered.

Accordingly, in order to minimize the movement of the sprayed ion exchange resin particles, a second nanofiber web for locking to fix the initial position where the ion exchange resin particles sprayed on the first nanofiber web is seated is provided. 1 < / RTI > nanofiber web.

8 is a schematic view of an electrospinning and electrospray apparatus applied to a second embodiment of the present invention.

The electrospinning and spraying method applied to the present invention is characterized in that high voltage electrostatic force is applied between the spinning nozzles 41 and 43 through which the first and second spinning solutions are radiated and between the spraying nozzle 42 and the collector 6 through which the spinning solution is sprayed The first nanofiber web, the ion exchange resin particles, and the second nanofiber web are successively first radiated, jetted, and secondly radiated sequentially onto the inorganic polymer film located on the collector 6 to form first and second nanofiber webs It is possible to disperse the ion exchange resin particles in the laminated structure.

The injected nanofibers 5 and the injected beads are injected into the collector 6 by spraying the air 4a during the spinning process in the spinning nozzles 41 and 43 and the spinning process in the spinning nozzle 42. [ So that it can be prevented from being blown.

Referring to FIG. 8, the electrospinning and injecting apparatus of the present invention includes a stirrer 2 using a mixing motor 2a as a driving source and is connected to spinning nozzles 41 and 43 for supplying a stirred spinning solution And a stirrer 2 which uses a mixing motor 2a as a driving source similar to the first spinning solution tank 1 and which is provided with an injection nozzle And the second spinous liquid tank 1a connected to the spinning nozzle 42. The spinning nozzles 41 and 43 and the spinning nozzle 42 are connected to the high voltage generator.

Here, assuming that the first and second multi-layered nanofiber webs are formed of the nanofibers radiated from the spinning solution composed of the same components (the polymer substance and the solvent), two spinning nozzles 41, 43), or when the components of the spinning solution for forming the first and second multi-layered nanofiber webs are different, the spinning solution of the other component is put in the two spinning solution tanks, And the spinning nozzle '41' is connected to the spinning nozzle '43', and the spinning nozzle '43' is connected to the other spinning solution tank.

The first spinning liquid tank 1 is connected to the first and second spinning nozzles 41 and 43 through a metering pump and a transfer tube 3 which are not shown and the second spinning liquid tank 1a is also connected to a metering pump (Not shown) and a delivery pipe (not shown).

The polymer spinning solution sequentially discharged from the spinning nozzles 41 and 43 is discharged to the nanofibers 5 while passing through the spinning nozzles 41 and 43 charged by the high voltage generator, Nanofibers are sequentially laminated on the inorganic hollow polymer film on the grounded collector 6 to form a porous nanofiber web.

When the sprayed bead is injected into the first nanofiber web and the sprayed bead reaches the first nanofiber web, most of the solvent is volatilized so that the first nanofiber The ion exchange resin particles are dispersed and settled on the web.

In the present invention, air is injected from the outer periphery of the spinning nozzle when the spinning nozzle is sprayed by the air electrospinning method in which air 4a is sprayed for each spinning nozzle 41 and 43, Can be used to collect and integrate a more rigid film.

When a plurality of multi-hole radiation packs are used for mass production, mutual interference occurs and the fibers are blown away and are not collected. As a result, the nanofiber web obtained becomes too bulky and causes radiation trouble .

Therefore, according to the present invention, it is possible to minimize radiation troubles that may occur when air is blown around the spinning nozzles 41 and 43 to fly the fibers.

In the same manner, when air is jetted from the injection nozzle 42, the beads injected into the first multi-layered nanofiber web 7 can be well seated and the beads of the injection solution can be prevented from flying.

A plurality of air injection nozzles (not shown) are provided on the outer circumference of the spinning nozzles 41 and 43 and the injection nozzles 42 used in the present invention. The fibers and the beads of the spray liquid sprayed from the spray nozzle 42 can be guided and integrated. The air pressure of the air injection is set in the range of 0.1 to 0.6 MPa. In this case, when the air pressure is less than 0.1 MPa, it can not contribute to the collection / accumulation. When the air pressure exceeds 0.6 MPa, the cone of the spinning nozzle is hardened, and the needle is closed to cause radiation trouble.

Although the electrospinning and electric spraying apparatus shown in Fig. 8 exemplifies formation of the two-layered nanofiber web 7 by two spinning nozzles 41 and 43, The spinneret 41 of the previous process and the spinneret 43 of the post-process after the spinneret are formed in a plurality of ways so that the spinneret 42 is sprayed before the spinneret is sprayed. Layer nanofibrous web of the process and the second multi-layered nanofiber web of the (post) process after the spraying liquid is sprayed from the spray nozzle 42 are each passed through a multi-layered nanofiber web in which a plurality of spinning nozzles are arranged in a plurality of rows and a plurality of rows, Layered nanofibrous web composed of an ultra thin film for each layer by applying a hole spinning pack.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

500: Chemical filter 510: Inorganic hollow polymer film
520: Nano fiber web 530: Euro sheet
531: Sheet 532: Through hole

Claims (9)

delete delete delete delete delete delete Preparing an inorganic hollow polymer film;
Forming a first nanofiber web by electrospinning a spinning solution containing a polymer material and a solvent on the inorganic polymer film;
Dispersing the ion exchange resin particles on the outside of the nanofibers of the first nanofiber web by spraying a solution of the mixture of the ion exchange resin particles and the solvent onto the first nanofiber web;
Forming a second nanofiber web by electrospinning a spinning solution mixed with a polymer material and a solvent onto the first nanofiber web;
Attaching the second nanofibrous web to the second nanofibrous web; And
And rolling the inorganic hollow polymer film in which the first and second nanofiber webs and the flow path sheet are laminated. ≪ RTI ID = 0.0 > 11. < / RTI > The method of claim 7, wherein preparing the inorganic co-polymer film comprises: electrospinning a spinning solution containing a mixture of a polymer material and a solvent to form a nanofiber web for a film made of nanofibers; Wherein the nanofiber web for film is calendered or heat treated to form the inorganic polymer film. The method according to claim 7, wherein the spinning solution further contains ion exchange resin particles, and the ion exchange resin particles are dispersed in the nanofibers of the first and second nanofiber webs Method of manufacturing a chemical filter.

Images