CN102560896A - Method and device for preparation of composite functional membrane with nanofiber layer - Google Patents
Method and device for preparation of composite functional membrane with nanofiber layer Download PDFInfo
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- CN102560896A CN102560896A CN2012100318814A CN201210031881A CN102560896A CN 102560896 A CN102560896 A CN 102560896A CN 2012100318814 A CN2012100318814 A CN 2012100318814A CN 201210031881 A CN201210031881 A CN 201210031881A CN 102560896 A CN102560896 A CN 102560896A
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Abstract
The invention relates to a method and a device for preparation of a composite functional membrane with a nanofiber layer. The method includes: melting and mixing first polymer in a screw extruder, feeding the mixture into a spinning pump, using a spinneret plate to extrude and cool to form fibers, using high-speed air flow to quicken stretching of the fibers, mechanically or pneumatically controlling filaments to evenly spread on a formation curtain to form nonwoven after fiber division; and dissolving second polymer and functional components into solvent to form spinning solution, spouting the spinning solution from a spray nozzle of an electric spinning device under the action of electrostatic field, and jetting the spinning solution to the nonwoven made of the first polymer under suction of a receiving device with opposite charges, and obtaining the composite functional membrane with the nanofiber layer. The method is implemented via the device for preparation, the nonwoven fabric produced using a spun-bonding process module forms a support layer of the composite membrane, and the nanofibers produced by using an electric spinning module form a functional layer of the composite membrane. The method and the device can be used for simply and efficiently producing double-layer or multi-layer functional membrane materials.
Description
Technical field
The present invention relates to the preparing technical field of composite function film, particularly relate to a kind of preparation method and device thereof with layers of nanofibers composite function film.
Background technology
Electrostatic spinning is a kind of nano-fabrication technique of (top-down) from top to bottom; The surface tension of liquid and the viscoelastic power of making every effort to overcome the most advanced and sophisticated drop of clothes shower nozzle through extra electric field form jet; Under electrostatic repulsion, Coulomb force and surface tension acting in conjunction; Liquid jet after being atomized is crooked by high frequency, draw, divide, and drafted thousands of times in a few tens of milliseconds obtains nano-scale fiber through solvent evaporates or melt cooling at receiving terminal.This technical matters process is simple, control conveniently, select that material ranges is extensive, controllability strong and can have the nanofiber of microstructure characteristic through the sprinkler design preparation; Be considered to most possibly realize a kind of method of continuous nano-fibre suitability for industrialized production, have good prospect expection.But it is still unstable that electricity spins the as-spun fibre structure that obtains, and the supramolecular structure order is lower, stretched and HEAT SETTING processing; Its physical and mechanical properties still can not satisfy the requirement of weaving processing, is difficult to use separately, even do filtering material; Also usually need be compound with other materials, to strengthen its structure.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method and device thereof with layers of nanofibers composite function film; It is more simple that feasible preparation has the layers of nanofibers composite function film; Effectively fibrolaminar thickness of control surface and uniformity; The operation of accomplishing scale production easily, and the prepared composite functional membrane can be multi-field being applied such as chemical industry, medicine, biologies.
The technical solution adopted for the present invention to solve the technical problems is: a kind of preparation method with layers of nanofibers composite function film is provided, may further comprise the steps:
(1) first polymer melt-blended in screw extruder is got into Spinning pumps, extrude from spinnerets then and be cooled to silk, utilize high velocity air that fiber is quickened to stretch, divide the silk back to be taped against into equably on the lace curtaining, form nonwoven fabric through machinery or air-flow control long filament;
(2) second polymer and function component are dissolved in solvent and are configured to spinning solution; Under electrostatic field; Spinning solution sprays from the spinning nozzle of electric spinning equipment; Under the attraction that has the opposite charges receiving device, be ejected on the nonwoven fabric of processing by first polymer, obtain the layers of nanofibers composite function film.
Also comprise after the said step (2) the layers of nanofibers composite function film is carried out hot rolling with compounding machine, obtain the composite film material of hot rolling setting.
Said first polymer is a kind of in polypropylene fibre, terylene, polyamide fibre, viscose, acrylic fibers, polyvinyl, cotton, wool, the ramie.
Said second polymer is polyamide fibre, polyamide, polyurethane, polymethyl methacrylate, gather the acetate glycol ester, polypropylene is fine, a kind of than in pyrrolidone, the acetate fiber of polyethylene glycol oxide, polyvinyl alcohol, polyvinyl chloride, Kynoar, polyethylene phenol, PLA, polycaprolactone, polyethylene.
Said function component is a kind of in nano metal particles, CNT, catalyst, antibiotic, immunodepressant, antiseptic, hormone, vitamin, anaesthetic, haemostatic medicament, analgesic, the antihypertensive drugs.
The technical solution adopted for the present invention to solve the technical problems is: a kind of preparation facilities with layers of nanofibers composite function film also is provided; Comprise that spun-bond process module and electricity spin module; Said spun-bond process module and electricity spin the module below and all are placed with annular trawlnet band; Wherein, be positioned at the wire netting that also is provided with ground connection under the annular trawlnet band that electricity spins module below; Said spun-bond process module comprises screw extruder and filament spinning component; The outlet of said screw extruder links to each other with the inlet of said filament spinning component; Said electricity spins module and comprises liquid storage tank and support; Said support is done under drive device drives and vertical the moving back and forth of said annular trawlnet tape feeding direction; The discharging opening of said liquid storage tank links to each other with conduit in the support; Said support downside is provided with the many nozzle systems that are connected with the support inner catheter; Said many nozzle systems link to each other with electrostatic generator, and relative with said wire netting.
Annular trawlnet band and compounding machine inlet that said electricity spins the module below join.
Said many nozzle systems place annular trawlnet band upside 15-30cm place; Said wire netting is parallel to be placed on annular trawlnet band downside 5-20cm.
Said many nozzle systems are that linearity is arranged, circular arrangement, polygon is arranged or multidimensional is arranged.
Said many nozzle systems are linearity when arranging, and said linearity many nozzle systems of arranging are no less than 5 rows, and every row's shower nozzle number is no less than 5, and the spacing between the shower nozzle is 5-10cm.
Also be provided with first measuring pump between said screw extruder and the filament spinning component; The discharging opening of said liquid storage tank also links to each other with the feeding mouth of second measuring pump; The discharging opening of said second measuring pump links to each other with conduit in the support.
Beneficial effect
Owing to adopted above-mentioned technical scheme; The present invention compared with prior art; Have following advantage and good effect: technical scheme provided by the present invention can prepare the non-weaving cloth with nanofiber rete simply efficiently; Pattern through electric spinning process control table surface layer, thickness, porosity etc. are given the composite membrane difference in functionality through adding function component, like release, antibiotic, radiation proof etc.
Description of drawings
Fig. 1 is a general structure sketch map of the present invention;
Fig. 2 is a spun-bond process module diagram of the present invention;
Fig. 3 is that electricity of the present invention spins module diagram;
Fig. 4 is that the linearity electricity of arranging spins the structural representation of module.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
The present invention relates to a kind of preparation method, may further comprise the steps with layers of nanofibers composite function film:
(1) with first polymer melt-blended and (wherein in screw extruder with uniform temperature and pressure; Temperature can be 200-350 ℃; Pressure can be 5-15Mpa) get into Spinning pumps, extrude from spinnerets then and be cooled to silk, utilize high velocity air that fiber is quickened to stretch; Divide the silk back to be taped against into equably on the lace curtaining, form nonwoven fabric through machinery or air-flow control long filament.Wherein, first polymer can be a kind of in polypropylene fibre, terylene, polyamide fibre, viscose, acrylic fibers, polyvinyl, cotton, wool, the ramie.
(2) second polymer and function component are dissolved in solvent and are configured to spinning solution; Under electrostatic field; Spinning solution sprays from the spinning nozzle of electric spinning equipment; Under the attraction that has the opposite charges receiving device, be ejected on the nonwoven fabric of processing by first polymer, obtain the layers of nanofibers composite function film.Wherein, second polymer can be polyamide fibre, polyamide, polyurethane, polymethyl methacrylate, gather that acetate glycol ester, polypropylene are fine, a kind of than in pyrrolidone, the acetate fiber of polyethylene glycol oxide, polyvinyl alcohol, polyvinyl chloride, Kynoar, polyethylene phenol, PLA, polycaprolactone, polyethylene; Function component can be a kind of in nano metal particles, CNT, catalyst, antibiotic, immunodepressant, antiseptic, hormone, vitamin, anaesthetic, haemostatic medicament, analgesic, the antihypertensive drugs.
(3) the layers of nanofibers composite function film is carried out hot rolling with compounding machine, adjustment temperature, pressure and time obtain the composite film material of hot rolling setting.
The invention still further relates to a kind of preparation facilities with layers of nanofibers composite function film; As shown in Figure 1; Comprise that spun-bond process module 13 and electricity spin module 14; Said spun-bond process module 13 is spun module 14 belows with electricity and all is placed with annular trawlnet band 7, wherein, is positioned at the wire netting 8 that annular trawlnet band that electricity spins module 13 belows also is provided with ground connection for 7 times; The annular trawlnet band 7 that said electricity spins module 14 belows joins with compounding machine 12 inlets.As shown in Figure 2, said spun-bond process module 13 comprises screw extruder 1 and filament spinning component 3; The outlet of said screw extruder 1 links to each other with the inlet of said filament spinning component 3; Also be provided with first measuring pump 2 between said screw extruder 1 and the filament spinning component 3.As shown in Figure 3, said electricity spins module 14 and comprises liquid storage tank 4 and support 6; Said support 6 is done and vertical the moving back and forth of said annular trawlnet band 7 throughput directions under drive unit 10 drives; The discharging opening of said liquid storage tank 4 also links to each other with the feeding mouth of second measuring pump 5; The discharging opening of said second measuring pump 5 links to each other with support 6 interior conduits 15; Said support 6 downsides are provided with the many nozzle systems 11 that are connected with support inner catheter 15; Said many nozzle systems 11 link to each other with electrostatic generator 9, and relative with said wire netting 8.Wherein, said many nozzle systems 11 place annular trawlnet band 7 upside 15-30cm places; Said wire netting 8 is parallel to be placed on annular trawlnet band 7 downside 5-20cm.
As shown in Figure 2; In spun-bond process module 13; The various polymerization raw material after the fusion, is sent into filament spinning component 3 through measuring pump 2 strict calculating and is carried out spinning in screw extruder 1, drafted one-tenth filament behind the cooling back tow process drawing-off passage; The shop is put and is being become on the lace curtaining, and prepared non-weaving cloth becomes the supporting layer of composite membrane.
As shown in Figure 3, spin in the module 14 at electricity, electrostatic generator 9 links to each other with many nozzle systems 11, and wire netting 8 ground connection form high voltage electric field at spinneret and 7 on trawlnet band; Spinning solution gets into support 6 inner catheters 15 via measuring pump 5 in the liquid storage tank 4; And then be delivered to many nozzle systems 11; Under the effect of gravity and electric field force, form the Taylor cone; And then be drawn into silk formation nanofiber, and being deposited on above-mentioned support layer surface, prepared nano fibrous membrane becomes the functional layer of composite membrane.
Said many nozzle systems 11 are arranged for linearity, and are as shown in Figure 4, linearity arrange many nozzle systems be 5 row; Every row's shower nozzle number is 5; Spacing between the shower nozzle is 5-10cm, and support 6 is parallel with linear velocity 5-30m/min annular trawlnet band, at the uniform velocity reciprocating motion under drive unit 10 effects; Speed is 1-5m/min, and amplitude is 10-30cm.
Need to prove that many nozzle systems can also be circular arrangement, polygon is arranged or multidimensional is arranged.
Composite membrane is sent into compounding machine 12, and the thermoplastic webs rear section fibers melt of being heated is softening, produces adhesion between fiber, and cooling back fibre web obtains reinforcing, composite membrane physics and mechanical property raising.
Claims (10)
1. the preparation method with layers of nanofibers composite function film is characterized in that, may further comprise the steps:
(1) first polymer melt-blended in screw extruder is got into Spinning pumps, extrude from spinnerets then and be cooled to silk, utilize high velocity air that fiber is quickened to stretch, divide the silk back to be taped against into equably on the lace curtaining, form nonwoven fabric through machinery or air-flow control long filament;
(2) second polymer and function component are dissolved in solvent and are configured to spinning solution; Under electrostatic field; Spinning solution sprays from the spinning nozzle of electric spinning equipment; Under the attraction that has the opposite charges receiving device, be ejected on the nonwoven fabric of processing by first polymer, obtain the layers of nanofibers composite function film.
2. the preparation method with layers of nanofibers composite function film according to claim 1 is characterized in that, also comprises after the said step (2) the layers of nanofibers composite function film is carried out hot rolling with compounding machine, obtains the composite film material of hot rolling setting.
3. the preparation method with layers of nanofibers composite function film according to claim 1 is characterized in that, said first polymer is a kind of in polypropylene fibre, terylene, polyamide fibre, viscose, acrylic fibers, polyvinyl, cotton, wool, the ramie.
4. the preparation method with layers of nanofibers composite function film according to claim 1; It is characterized in that said second polymer is polyamide fibre, polyamide, polyurethane, polymethyl methacrylate, gather the acetate glycol ester, polypropylene is fine, a kind of than in pyrrolidone, the acetate fiber of polyethylene glycol oxide, polyvinyl alcohol, polyvinyl chloride, Kynoar, polyethylene phenol, PLA, polycaprolactone, polyethylene.
5. the preparation method with layers of nanofibers composite function film according to claim 1; It is characterized in that said function component is a kind of in nano metal particles, CNT, catalyst, antibiotic, immunodepressant, antiseptic, hormone, vitamin, anaesthetic, haemostatic medicament, analgesic, the antihypertensive drugs.
6. preparation facilities with layers of nanofibers composite function film; Comprise that spun-bond process module (13) and electricity spin module (14); It is characterized in that; Said spun-bond process module (13) and electricity spin module (14) below and all are placed with annular trawlnet band (7), wherein, are positioned at the wire netting (8) that also is provided with ground connection under the annular trawlnet band (7) that electricity spins module (14) below; Said spun-bond process module (13) comprises screw extruder (1) and filament spinning component (3); The outlet of said screw extruder (1) links to each other with the inlet of said filament spinning component (3); Said electricity spins module (14) and comprises liquid storage tank (4) and support (6); Said support (6) is done and vertical the moving back and forth of said annular trawlnet band (7) throughput direction under drive unit (10) drives; The discharging opening of said liquid storage tank (4) links to each other with the interior conduit (15) of support (6); Said support (6) downside is provided with the many nozzle systems (11) that are connected with support inner catheter (15); Said many nozzle systems (11) link to each other with electrostatic generator (9), and relative with said wire netting (8).
7. the preparation facilities with layers of nanofibers composite function film according to claim 6 is characterized in that, the annular trawlnet band (7) that said electricity spins module (13) below joins with compounding machine (12) inlet.
8. the preparation facilities with layers of nanofibers composite function film according to claim 6 is characterized in that, said many nozzle systems (11) place annular trawlnet band (7) upside 15-30cm place; Parallel said annular trawlnet band (7) the downside 5-20cm that is placed on of said wire netting (8).
9. the preparation facilities with layers of nanofibers composite function film according to claim 6 is characterized in that, said many nozzle systems (11) are for linearity is arranged, circular arrangement, polygon is arranged or multidimensional is arranged.
10. the preparation facilities with layers of nanofibers composite function film according to claim 9; It is characterized in that said many nozzle systems (11) are when arranging for linearity, said linearity many nozzle systems of arranging are no less than 5 rows; Every row's shower nozzle number is no less than 5, and the spacing between the shower nozzle is 5-10cm.
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| CN102995294A (en) * | 2012-12-13 | 2013-03-27 | 武汉纺织大学 | Manufacturing method of antistatic needle fabric |
| CN103657252A (en) * | 2013-11-25 | 2014-03-26 | 江苏菲特滤料有限公司 | Manufacturing method of dust removal filter cloth |
| CN103768660A (en) * | 2014-02-25 | 2014-05-07 | 江南大学 | Method for preparing surface medicinal coating of gastric tube |
| CN103895293A (en) * | 2014-03-05 | 2014-07-02 | 符思敏 | Nanofiber membrane fabric with modified self-cleaning carbon nano tube and preparation method |
| CN104313798A (en) * | 2014-09-29 | 2015-01-28 | 中鸿纳米纤维技术丹阳有限公司 | Tightening mechanism of nanofiber net forming device |
| CN104512942A (en) * | 2013-09-27 | 2015-04-15 | 中国环境科学研究院 | Method utilizing polylactic acid/carbon nanotube composite electro-spun fiber membrane to absorb and remove perfluorooctane sulfonate in water |
| CN105561371A (en) * | 2016-02-03 | 2016-05-11 | 华南理工大学 | Grid-structure dressing capable of being broken up by water to be abandoned and preparation process thereof |
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Application publication date: 20120711 |