CN204952690U - Surface modification device suitable for hollow fiber membrane - Google Patents
Surface modification device suitable for hollow fiber membrane Download PDFInfo
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- CN204952690U CN204952690U CN201520654726.7U CN201520654726U CN204952690U CN 204952690 U CN204952690 U CN 204952690U CN 201520654726 U CN201520654726 U CN 201520654726U CN 204952690 U CN204952690 U CN 204952690U
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Abstract
The utility model discloses a surface modification device suitable for hollow fiber membrane, its hydrophilic antipollution ability that can effectively improve hollow fiber membrane. Hollow fiber membrane's modified processing lines is provided with the towing team wheel including first wire winding wheel, the hydrophilic modified electrolytic bath that is used for twining the former membrane of hollow fiber, the second wire winding wheel that is used for the collection film silk in the electrolytic bath, coming from under the effect of hollow fiber membrane towing team wheel in the electrolytic bath of wire winding wheel, through the electrolytic bath, to electrode applied voltage in the electrolytic bath, making and produce the catalyst in the electrolytic bath, the catalysis modifying monomer is at membrane surface reaction, then the modified diaphragm takes turns to at the 2nd wire winding through the winding of towing team wheel. Obtain improving with the antipollution ability through modified hollow fiber membrane is hydrophilic, the stable performance of grafting molecule brush, and modified technology convenient operation, the controllability is good, and the cost is lower.
Description
Technical field
The utility model belongs to macromolecular material process equipment technical field, relates to a kind of surface modification device being applicable to Novel hollow fiber membrane.
Background technology
Hollow fiber microporous membrane is a kind of special fibre film that new development is got up, and is successfully applied to the fields such as chemical industry, electronics, weaving, food, biochemistry.Because the former film of doughnut has strong-hydrophobicity, when processing water-based fluid, hollow-fibre membrane easily produces adsorption fouling, and membrane separating property declines, and limits its application in the application of the aqueous phase separation systems such as biochemical pharmacy, food and drink and Water warfare.Usually rightly physical blending or surface modification is modified as.But blending and modifying poor stability, conventional surface modification complicated operation, cost is higher.
For the defect that prior art exists, propose a kind of technological operation convenient, controllability is good, the modification processing unit (plant) of lower-cost Novel hollow fiber membrane.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of surface modification device of Novel hollow fiber membrane, and it effectively can improve the hydrophilic contamination resistance of hollow-fibre membrane.
The utility model device comprises the first wire wrapping wheel for being wound around the former film of doughnut, hydrophilic modifying electrolytic cell, the second wire wrapping wheel for collection membrane silk successively by process sequence, wherein hydrophilic modifying electrolytic cell adopts three-electrode system, and three electrodes are all immersed in below liquid level of electrolyte; First wire wrapping wheel and the second wire wrapping wheel are all arranged on outside hydrophilic modifying electrolytic cell pond, the former film of the doughnut that first wire wrapping wheel is wound around immerses electrolyte by draw groups wheel, and through working electrode, then involve electrolyte, finally around to the second wire wrapping wheel through draw groups wheel; Electrochemical workstation be hydrophilic modifying electrolytic cell working electrode, electrode, reference electrode are powered, and be connected with outer PC signal, control by PC the response voltage that electrochemical workstation provides, Control of Voltage is at-0.5 ~-0.1V.
Described hydrophilic modifying electrolytic cell electrolyte inside is mixed liquor, comprises modified hydrophilic monomer, water-methanol mixture, conducting electrolyte, high valence transition metal halide, part, wherein modified hydrophilic monomer is vinyl pyrrolidone (VP), hydroxyethyl methacrylate (HEMA), methacrylate (POEM), acrylamide (AM), polyethylene glycol methacrylate-styrene polymer (PEGMA), acrylic acid (AA) or amphion, high valence transition metal chlorine halide is copper chloride, copper bromide, iron chloride, ferric bromide, nickel chloride, nickelous bromide, ruthenic chloride, one in ruthenium bromide, conducting electrolyte is anhydrous sodium sulfate, sodium chloride, potassium chloride, one in benzyl tributyl ammonium chloride, part is the full methyl-derivatives of bipyridine and derivative and many ethamine, be preferably bipyridyl, tetramethylethylenediamine, one in pentamethyl-diethylenetriamine, in water-methanol mixture, the mass ratio of first alcohol and water is 1:1 ~ 1:4,
As preferably, the working electrode of described hydrophilic modifying electrolytic cell and be platinum plate electrode or graphite electrode to electrode, reference electrode is calomel electrode or silver/silver chloride electrode;
The distance of the former film of described doughnut and working electrode is 1 ~ 5cm;
The material of the former film of described doughnut is Kynoar, polyvinyl chloride or polytetrafluoroethylene (PTFE), obtains by buying;
The former film of described doughnut through the hauling speed of electrolytic cell be 50m/h ~ 1m/h.
The beneficial effects of the utility model are:
The utility model structure is simple, is convenient to user's operation, and can ensures that doughnut membrane modifying is complete.Constant by the hollow-fibre membrane substrate performance of the utility model device modification, hydrophilic and contamination resistance is improved simultaneously, the stable performance of grafting molecules brush, and modified technique is easy to operate, and controllability is good, and cost is lower.
Accompanying drawing explanation
Fig. 1 is the profile of the utility model product line device;
Fig. 2 is the side schematic view of electrolytic cell system;
Wherein 1 be that the first wire wrapping wheel, 2 is draw groups wheel, 3 electrochemical workstations that be working electrode, 4 be is connected with electrode, 5 be PC, 6 be the second wire wrapping wheel, 7 be reference electrode, 8 are to electrode.
Detailed description of the invention
Below in conjunction with accompanying drawing and concrete real examination example, the utility model is further described, but the utility model can not be confined to these detailed description of the invention.One skilled in the art would recognize that the utility model covers all alternatives, improvement project and the equivalents that may comprise in right.
As shown in Figure 1, the utility model device comprises the first wire wrapping wheel 1 for being wound around the former film of doughnut, hydrophilic modifying electrolytic cell, the second wire wrapping wheel 6 for collection membrane silk successively by process sequence, wherein as shown in Figure 2, hydrophilic modifying electrolytic cell adopts three-electrode system, and three electrodes are all immersed in below liquid level of electrolyte; First wire wrapping wheel 1 and the second wire wrapping wheel 6 are all arranged on outside hydrophilic modifying electrolytic cell pond, the former film of doughnut that first wire wrapping wheel 1 is wound around immerses electrolyte by draw groups wheel 2, and through working electrode 3, then involve electrolyte, finally around to the second wire wrapping wheel 6 through draw groups wheel 2; Electrochemical workstation 4 be hydrophilic modifying electrolytic cell working electrode 3, electrode 8, reference electrode 7 are powered, and be connected with outer PC 5 signal, control by PC 5 response voltage that electrochemical workstation 4 provides, Control of Voltage is at-0.5 ~-0.1V.
Described hydrophilic modifying electrolytic cell electrolyte inside is mixed liquor, comprises modified hydrophilic monomer, water-methanol mixture, conducting electrolyte, high valence transition metal halide, part, wherein modified hydrophilic monomer is vinyl pyrrolidone (VP), hydroxyethyl methacrylate (HEMA), methacrylate (POEM), acrylamide (AM), polyethylene glycol methacrylate-styrene polymer (PEGMA), acrylic acid (AA) or amphion, high valence transition metal chlorine halide is copper chloride, copper bromide, iron chloride, ferric bromide, nickel chloride, nickelous bromide, ruthenic chloride, one in ruthenium bromide, conducting electrolyte is anhydrous sodium sulfate, sodium chloride, potassium chloride, one in benzyl tributyl ammonium chloride, part is the full methyl-derivatives of bipyridine and derivative and many ethamine, be preferably bipyridyl, tetramethylethylenediamine, one in pentamethyl-diethylenetriamine, in water-methanol mixture, the mass ratio of first alcohol and water is 1:1 ~ 1:4,
The distance of the former film of described doughnut and working electrode 3 is 1 ~ 5cm;
The material of the former film of described doughnut is polyvinyl chloride or polytetrafluoroethylene (PTFE), obtains by buying;
The former film of described doughnut through the hauling speed of electrolytic cell be 50m/h ~ 1m/h.
The working electrode 3 of hydrophilic modifying electrolytic cell that adopts of embodiment and be platinum plate electrode or graphite electrode to electrode 8 below, reference electrode 7 is calomel electrode or silver/silver chloride electrode.
Embodiment 1
The former film of polyvinyl chloride hollow fiber that first wire wrapping wheel 1 is wound around, the electrolyte through configuring under the effect of traction wheels 2, hauling speed is 1m/h.When working electrode 3, the spacing of film and electrode is 1cm, working electrode 3 is applied to the external voltage of-0.2V, high valence transition metal halide in electrolyte is made to be reduced to low-valent transition metals halide catalyst, cause hydrophilic monomer and carry out graft modification on hollow-fibre membrane, then modified hollow fibre membrane is wound around by traction wheels 2 and is collected on the second wire wrapping wheel 6.
Embodiment 2
The former film of polyvinylidene fluoride hollow fiber that first wire wrapping wheel 1 is wound around, the electrolyte through configuring under the effect of traction wheels 2, hauling speed is 5m/h.When working electrode 3, the spacing of film and electrode is 3cm, working electrode 3 is applied to the external voltage of-0.3V, high valence transition metal halide in electrolyte is made to be reduced to low-valent transition metals halide catalyst, cause hydrophilic monomer and carry out graft modification on hollow-fibre membrane, then modified hollow fibre membrane is wound around by traction wheels 2 and is collected on the second wire wrapping wheel 6.
Embodiment 3
The former film of polytetrafluoroethylhollow hollow fiber that first wire wrapping wheel 1 is wound around, the electrolyte through configuring under the effect of traction wheels 2, hauling speed is 10m/h.When working electrode 3, the spacing of film and electrode is 5cm, working electrode 3 is applied to the external voltage of-0.5V, high valence transition metal halide in electrolyte is made to be reduced to low-valent transition metals halide catalyst, cause hydrophilic monomer and carry out graft modification on hollow-fibre membrane, then modified hollow fibre membrane is wound around by traction wheels 2 and is collected on the second wire wrapping wheel 6.
Embodiment 4
The former film of polytetrafluoroethylhollow hollow fiber that first wire wrapping wheel 1 is wound around, the electrolyte through configuring under the effect of traction wheels 2, hauling speed is 50m/h.When working electrode 3, the spacing of film and electrode is 1cm, working electrode 3 is applied to the external voltage of-0.1V, high valence transition metal halide in electrolyte is made to be reduced to low-valent transition metals halide catalyst, cause hydrophilic monomer and carry out graft modification on hollow-fibre membrane, then modified hollow fibre membrane is wound around by traction wheels 2 and is collected on the second wire wrapping wheel 6.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection domain of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection domain of the present utility model.
Claims (7)
1. one kind is applicable to the surface modification device of hollow-fibre membrane, it is characterized in that this device comprises the first wire wrapping wheel for being wound around the former film of doughnut, hydrophilic modifying electrolytic cell, the second wire wrapping wheel for collection membrane silk successively by process sequence, wherein hydrophilic modifying electrolytic cell adopts three-electrode system, and three electrodes are all immersed in below liquid level of electrolyte; First wire wrapping wheel and the second wire wrapping wheel are all arranged on outside hydrophilic modifying electrolytic cell pond, the former film of the doughnut that first wire wrapping wheel is wound around immerses electrolyte by draw groups wheel, and through working electrode, then involve electrolyte, finally around to the second wire wrapping wheel through draw groups wheel.
2. a kind of surface modification device being applicable to hollow-fibre membrane as claimed in claim 1, it is characterized in that electrochemical workstation be hydrophilic modifying electrolytic cell working electrode, electrode, reference electrode are powered, and be connected with outer PC signal, the response voltage provided by PC control electrochemical workstation.
3. a kind of surface modification device being applicable to hollow-fibre membrane as claimed in claim 2, is characterized in that Control of Voltage is at-0.5 ~-0.1V.
4. a kind of surface modification device being applicable to hollow-fibre membrane as claimed in claim 1, is characterized in that the working electrode of described hydrophilic modifying electrolytic cell and is platinum plate electrode or graphite electrode to electrode, reference electrode is calomel electrode or silver/silver chloride electrode.
5. a kind of surface modification device being applicable to hollow-fibre membrane as claimed in claim 1, is characterized in that the distance of the former film of described doughnut and working electrode is 1 ~ 5cm.
6. a kind of surface modification device being applicable to hollow-fibre membrane as claimed in claim 1, is characterized in that the material of the former film of described doughnut is Kynoar, polyvinyl chloride or polytetrafluoroethylene (PTFE).
7. a kind of surface modification device being applicable to hollow-fibre membrane as claimed in claim 1, it is characterized in that the former film of described doughnut through the hauling speed of electrolytic cell be 50m/h ~ 1m/h.
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| CN201520654726.7U CN204952690U (en) | 2015-08-27 | 2015-08-27 | Surface modification device suitable for hollow fiber membrane |
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| CN201520654726.7U CN204952690U (en) | 2015-08-27 | 2015-08-27 | Surface modification device suitable for hollow fiber membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268357A (en) * | 2016-08-30 | 2017-01-04 | 中山朗清膜业有限公司 | A kind of hydrophilia polyvinylidene fluoride hollow fiber membrane and preparation method thereof |
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- 2015-08-27 CN CN201520654726.7U patent/CN204952690U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268357A (en) * | 2016-08-30 | 2017-01-04 | 中山朗清膜业有限公司 | A kind of hydrophilia polyvinylidene fluoride hollow fiber membrane and preparation method thereof |
| CN106268357B (en) * | 2016-08-30 | 2019-02-05 | 中山朗清膜业有限公司 | A kind of hydrophilia polyvinylidene fluoride hollow fiber membrane and preparation method thereof |
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