CN103706258A - Preparation method for fiber-reinforced hollow fiber membrane stored through dry method and production device - Google Patents
Preparation method for fiber-reinforced hollow fiber membrane stored through dry method and production device Download PDFInfo
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- CN103706258A CN103706258A CN201310651630.0A CN201310651630A CN103706258A CN 103706258 A CN103706258 A CN 103706258A CN 201310651630 A CN201310651630 A CN 201310651630A CN 103706258 A CN103706258 A CN 103706258A
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Abstract
The invention relates to a preparation method for a fiber-reinforced hollow fiber membrane stored through a dry method. The method comprises steps of wire sending, wire spraying, solidification and finishing. After the finishing step, the hollow fiber membrane after finishing is subjected to wire winding at a speed of 6-10 m/min, then dried at the temperature of 80-100 DEG C, and then is subjected to winding. The secondary winding processing is employed, membrane filaments are dried directly and appearance and usage of the membrane filaments are not influenced.
Description
[technical field]
The present invention relates to preparation method and the production equipment of hollow-fibre membrane, more specifically, the present invention relates to a kind of preparation method of hollow-fibre membrane of dry method preservation, and realizes this preparation method's production equipment.
[background technology]
It is the main trend of current sewage disposal that film is disposed of sewage, and the film that sewage disposal is used is also varied, by shape, divide have flat sheet membrane, rolled film, hollow-fibre membrane etc., by forming method, can be divided into dry method, wet method, thermic Xiang Fa etc.Along with the raising to the performance requirement of hollow-fibre membrane, requirement of strength to film silk is also more and more higher, in order to improve strength study staff development, gone out band lining form, but the manufacturing cost with lining form is higher, limited to a great extent the extensive use that strengthens film, and band lining form is generally all microfiltration membranes, is difficult to accomplish ultrafiltration level, also limited the application that strengthens film.In order to reduce costs and to be applied to ultrafiltration strengthening film, researcher has developed again fiber reinforcement hollow-fibre membrane, and this film has replaced stay pipe with filament, greatly reduces the cost of film silk, and very little to the performance impact of film silk itself.
If being directly dried, the fiber reinforcement hollow-fibre membrane that prior art is made receives silk, can cause certain harmful effect to the outward appearance of film silk, such as: filament can waft in dry run, forming projection affect the performance of film silk, dried film silk not straight more crooked etc. on film silk surface, is substantially all therefore to adopt wet method preservation.Wet method is preserved the general NMF that adopts film silk is carried out to moisture-keeping finishing, film silk dries slow, can affect the carrying out of next step production, can affect the performance of fluid sealant in establishment of component process, and at establishment of component, also may get damp after well, even affect the mouthfeel of water outlet.
[summary of the invention]
[technical problem that will solve]
The object of this invention is to provide the present invention and overcome the defects such as film silk that wet method preserves easily gets damp, propose a kind of preparation method without using NMF, obtain the hollow-fibre membrane that the dry method of smooth in appearance is preserved.
[technical scheme]
The present invention is achieved through the following technical solutions.
The invention provides a kind of preparation method of hollow-fibre membrane of dry method preservation, described method comprises wire feed, spray silk, solidifies and arrange step, after described arrangement step, through the hollow-fibre membrane of arrangement with 6-10m/min by wrapping wire, then at 80-100 ℃, be dried, then by rolling.
Preferred embodiment a kind of according to the present invention, the speed of described rolling is than the fast 0.1-0.2m/min of wire winding speed.
The present invention also provides the production equipment of the hollow-fibre membrane of the dry method preservation that realizes above-mentioned preparation method, comprise fiber wire tray and the guide wheel joining with this dish of fiber, reactor and the spinning pump being connected with described reactor and spinneret, one or more gel groove, inside and outside described gel groove, be equipped with guide wheel, wherein, described production equipment also comprises the wire wrapping disk that the film silk through gel groove is carried out to wrapping wire, with the drying device of next order in described wire wrapping disk, and be located at the wrap-up at drying device rear portion.
Preferably, described drying device comprises drying tank, be located at described drying tank rim and dry the guide wheel in grain, and the guide wheel in described oven dry grain is according to the distribution that is arranged above and below of W type, or according to the Z-shaped distribution that is arranged above and below.
Preferably, described drying device comprises heater, and described heater is selected from heating wire, infrared lamp or steam pipe, with the temperature control equipment being connected with described heater.
Particularly preferably, drying device also comprises temperature sensor, and temperature sensor is connected with temperature control equipment.
According to a kind of optional embodiment, described production equipment also comprises one or more arrangement grooves of connecting with gel groove.
Below will illustrate in greater detail technical scheme of the present invention.
The preparation method of the hollow-fibre membrane that dry method is preserved, described method comprises wire feed, spray silk, solidifies and arrange step, and after described arrangement step, the hollow-fibre membrane that process arranges, is then dried, then by rolling by wrapping wire with 6-10m/min at 80-100 ℃.
Wire feed, spray silk, solidify and/or arrange step and belong to the prior art of preparing hollow-fibre membrane, for example the preparation method of the disclosed enhancement type hollow fiber compound film of Cn201210560696.4, the disclosed preparation method with the polyvinylidene fluoride hollow fiber microfiltration membranes of permanent hydrophilic of CN201110383379.5.
Preparation liquid, coagulation bath and modification are the technology that those skilled in the art have grasped, wherein, preparation liquid can be the mixture of polyvinylidene fluoride resin, solvent and/or additive, described solvent such as dimethylacetylamide, dimethyl formamide, 1-METHYLPYRROLIDONE etc., described additive such as polyvinylpyrrolidone, polyethylene glycol, hydroxy kind cellulose etc.Coagulation bath can be the aqueous solution of water-bath or dimethylacetylamide, dimethyl formamide, 1-METHYLPYRROLIDONE.Modification such as hydrophilically modified, surface charge modification etc., all on the books in prior art, do not repeat in this application.
In the present invention, the industrial filament that filament can adopt the materials such as polyester, nylon to make, is all one of making material of conventional hollow-fibre membrane.
In prior art, conventionally need in coagulation bath step or modification step, for example, with NMF (aqueous solution of glycerine or glycerine), process tunica fibrosa, reach diaphragm silk, avoid the dry effect of film silk.And in preparation method of the present invention, through the hollow-fibre membrane of coagulation bath or modification again with 6-10m/min by wrapping wire, then at 80-100 ℃, be dried, guarantee simultaneously film silk at drying stage by completely exceptionally straight, for example make rolling speed faster than wire winding speed 0.1-0.2m/min, guarantee film silk flooding, then rolling.
Compared with prior art, preparation method of the present invention, by controlling winding tension, is dried film silk under tensioned state, and reach dry method and preserve film silk object, thereby without using NMF.
Therefore,, in order to guarantee that film silk is in the dry effect of tensioned state, the speed of described rolling is slightly faster than wire winding speed.
The present invention also provides the production equipment of the hollow-fibre membrane of the dry method preservation that realizes above-mentioned preparation method, former procedures of this production equipment are same as the prior art or similar, comprise fiber wire tray and the guide wheel joining with this dish of fiber, for the reactor that mixes preparation liquid and the spinning pump being connected with described reactor and spinneret, one or more gel groove, inside and outside described gel groove, be equipped with guide wheel.Guide wheel is used for guiding filametntary wire feed direction, makes it successively through spray silk, coagulation bath and/or modification.Wherein, described production equipment also comprises the wire wrapping disk that the film silk through gel groove is carried out to wrapping wire, and the drying device of next order in described wire wrapping disk, and is located at the wrap-up at drying device rear portion.
Preferably, described drying device comprises drying tank, is located at described drying tank rim and dries the guide wheel in grain, guide wheel in described oven dry grain is according to the distribution that is arranged above and below of W type, or according to the Z-shaped distribution that is arranged above and below, for extending the travel distance of film silk in drying tank.
Preferably, described drying device comprises heater, and described heater is selected from heating wire, infrared lamp or jet chimney, or other can be used for the device of dry heat.With the temperature control equipment being connected with described heater.
Particularly preferably, drying device also comprises temperature sensor, and temperature sensor is connected with temperature control equipment.
According to a kind of optional embodiment, described production equipment also comprises one or more arrangement grooves of connecting with gel groove.
In addition, in the present invention, described hollow-fibre membrane is microfiltration membranes or milipore filter.
In the present invention, described hollow-fibre membrane can be polyvinylidene fluoride film, polyacrylonitrile film or PS membrane.
The present invention has carried out the mensuration of average pore size, intensity, infiltration angle and pure water flux to prepared hollow-fibre membrane.
The average pore size of described hollow-fibre membrane is measured with semidry method pore size determination instrument.
Described doughnut film strength refers to the fracture strength of single film, is by electronic universal material testing machine, measures to break that the required power of single film (N of unit) obtains.
The infiltration angle of described hollow-fibre membrane is measured with contact angle instrument.
The pure water flux of described hollow-fibre membrane is tested under 0.1MPa pressure with flux analyzer.
[beneficial effect]
The present invention adopts secondary rolling to process and makes film silk convection drying and do not affect film silk outward appearance and use, because film silk is to enter drying device in being tauted under state, in dry run, film silk and filament are all the states of being stretched, so filament still can be in the centre of film silk after dry, can not move to the surface of film silk, can not occur that filament wafts in the protruding phenomenon of film silk surface appearance along with dry.
[accompanying drawing explanation]
Fig. 1 is production equipment structural representation of the present invention;
Wherein, 1, fiber wire tray; 2, guide wheel; 3, reactor; 4, spinning pump; 5, spinneret; 6, gel groove; 7, wire wrapping wheel; 8, drying tank; 9, winder.
[specific embodiment]
By following embodiment, can understand better the present invention.
Embodiment 1
Configuration preparation liquid, composition is by weight: PVDF:PVP:DMAC=10:10:80
Using water as coagulation bath.
Preparation liquid is put in reactor 3, opened the agitating device of reactor 3, after evenly mixing, standing and defoaming is stand-by.
Get nylon fiber silk and be fixed in fiber wire tray 1, filament is directed to filament by guide wheel 2 from draw on the top of fiber wire tray 1 to the top of spinneret 5.Filament pierces into row spray silk by the wire hole on spinneret 5, then enter after gel groove 6, then draw fibers silk continues filament draw fibers silk by gel groove 6 successively and is dried by heating, drying groove 8 on wire wrapping wheel 7 after two circles through wire wrapping wheel 7, wire winding speed is 6m/min, then by winder 9, carry out rolling, control winder 9 linear velocities is 6.1m/min simultaneously, guarantees that filament is being dried with rolling state always in exceptionally straight state.
Embodiment 2
Preparation liquid, coagulation bath and filametntary material are with embodiment 1.
Preparation method is with embodiment 1, and difference is that wire winding speed is 10m/min, and winder 9 speed are 10.2m/min, guarantee that filament is always in exceptionally straight state.
Embodiment 3
Preparation liquid, coagulation bath and filametntary material are with embodiment 1.
Preparation method, with embodiment 1, after difference is that filament passes through gel groove 6, is directly guided and is entered heat oven dry grain 8 by guide wheel, then by winder 9 rollings.Owing to drying, path is longer, and filament is comparatively slack and undisciplined at baking stage, can not be always in exceptionally straight state.
Embodiment 4
Preparation liquid, coagulation bath and filametntary material are with embodiment 1.
Preparation method, with embodiment 1, after difference is that filament passes through gel groove 6, is directly guided and is entered heat oven dry grain 8 by guide wheel, then by winder 9 rollings.After immersion, add NMF, NMF is selected glycerine, and consumption is 30%.
The product of embodiment 1-4 (preparation method of the present invention, direct drying method, the method for preserving by NMF) is carried out to performance measurement, and observes its outward appearance by magnifying glass, contrast as follows:
Claims (8)
1. the preparation method of the fiber reinforcement hollow-fibre membrane that a dry method is preserved, described method comprises wire feed, spray silk, solidifies and arranges step, it is characterized in that after described arrangement step, through the hollow-fibre membrane that arranges with 6-10m/min by wrapping wire, then at 80-100 ℃, be dried, then by rolling.
2. preparation method according to claim 1, is characterized in that the speed of described rolling is than the fast 0.1-0.2m/min of wire winding speed, guarantees that the film silk of arid region is in tensioned state.
3. a production equipment for the hollow-fibre membrane that dry method is preserved, comprises fiber wire tray and the guide wheel joining with this dish of fiber, reactor and the spinning pump being connected with described reactor and spinneret, one or more gel groove, inside and outside described gel groove, is equipped with guide wheel.It is characterized in that described production equipment also comprises the wire wrapping disk that the film silk through gel groove is carried out to wrapping wire, and the drying device of next order in described wire wrapping disk, and be located at the wrap-up at drying device rear portion.
4. production equipment according to claim 3, it is characterized in that described drying device comprises drying tank, is located at described drying tank rim and dries the guide wheel in grain, guide wheel in described oven dry grain is according to the distribution that is arranged above and below of W type, or according to the Z-shaped distribution that is arranged above and below.
5. production equipment according to claim 3, is that described drying device comprises heater described in its feature, and described heater is selected from heating wire, infrared lamp or jet chimney, with the temperature control equipment being connected with described heater.
6. production equipment according to claim 3, is characterized in that described drying device also comprises temperature sensor.
7. according to the production equipment described in claim 5 or 6, it is characterized in that described temperature sensor is connected with temperature control equipment.
8. production equipment according to claim 3, is characterized in that described production equipment also comprises one or more arrangement grooves of connecting with gel groove.
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| CN201310651630.0A CN103706258B (en) | 2013-12-05 | 2013-12-05 | The preparation method of the fiber reinforcement hollow-fibre membrane that a kind of dry method is preserved and production equipment thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104383817A (en) * | 2014-11-28 | 2015-03-04 | 天津华清健坤膜科技有限公司 | High-efficiency hollow fiber membrane production equipment |
| CN104437103A (en) * | 2014-11-28 | 2015-03-25 | 天津华清健坤膜科技有限公司 | Device with nylon skeleton for highly efficiently producing high quality hollow fiber membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104383817A (en) * | 2014-11-28 | 2015-03-04 | 天津华清健坤膜科技有限公司 | High-efficiency hollow fiber membrane production equipment |
| CN104437103A (en) * | 2014-11-28 | 2015-03-25 | 天津华清健坤膜科技有限公司 | Device with nylon skeleton for highly efficiently producing high quality hollow fiber membrane |
| CN104383817B (en) * | 2014-11-28 | 2017-07-18 | 天津华清健坤膜科技有限公司 | A kind of high-efficiency hollow fiber membrane production equipment |
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Address after: 650101 Yunnan city of Kunming province M1-4 high tech Development Zone, Road No. 1088 and block Haiyuan international A building 6 floor Patentee after: Yunnan Yunshui Construction Engineering Co. Ltd. Address before: 650100 Yunnan Province, Kunming City Haiyuan Road No. 1088 and international A 15 Floor Patentee before: Yunnan Chengtou Origin Water Technology Co., Ltd. |