CN104667763A - Supported hydrophilic polyvinylidene fluoride microporous membrane and preparation method thereof - Google Patents
Supported hydrophilic polyvinylidene fluoride microporous membrane and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a supported hydrophilic polyvinylidene fluoride microporous membrane and a preparation method thereof. The pore size of the microporous membrane is 0.1-20 mu m, and the thickness of the microporous membrane is 90-200 mu m. The method comprises the following steps: 1)the preparation of a casting membrane solution, dissolving a polyvinylidene fluoride resin in a solvent firstly, adding hydrophilic components and an additive, and at temperature of 30-80 DEG C, fully stirring the obtained mixture so as to form the uniform and stable casting membrane solution; and 2) membrane formation by phase inversion: casting the casting membrane solution on a support layer, carrying out membrane wiping on the support layer saturating in the casting membrane solution by using a scraper under the condition that a gap between the scraper and the support layer is 15-40 mu m, standing for 10-400 seconds in the air, and after a membrane sequentially passes through a first coagulation bath, a second coagulation bath and a third coagulation bath, taking out the membrane, and drying the membrane,,and then the hydrophilic microporous membrane is obtained. Compared with the prior art, the membrane disclosed by the invention has the advantages of thorough extraction, uniform pore size distribution, better filtering accuracy and filtering efficiency, capability of being applied to continuous mass production, stable product performances, and the like.
Description
Technical field
The present invention relates to food, beverage, biochemical pharmacy, the contour terminal membrane application of health care, especially relating to one has support hydrophilicity kynoar microporous barrier and preparation method thereof.
Background technology
Kynoar is a kind of semicrystalline polymer of function admirable.Because the C-F bond distance of Kynoar is short, bond energy strong (486KJ/mol), so it has excellent mechanical property (impact strength is good, good toughness, hardness are large, wearability good, anti-creep etc.), also have simultaneously good chemical stability (at room temperature not by acid, alkali, strong oxidizer and halogen corrode, the organic solvents such as aliphatic hydrocarbon, alcohol, aldehyde on it also without impact).But the strong-hydrophobicity of material itself causes again the appearance of two problems: one is the driving force that separation process needs are larger; Two is easily produce adsorption fouling, shortens the service life of film.Both remained the various premium properties of material itself by the hydrophilic PVDF material of modification, solved again the defect that its hydrophobicity is brought, become the preferred material preparing film, be widely used in the aspects such as chemical industry, environmental protection, industry water purified treatment.
But in food, beverage, biochemical pharmacy, the contour terminal membrane application of health care, more and more harsher to the requirement of film, require that the extraction of film inner additive and solvent will meet professional standard completely, and all there is problem more or less at membrane extraction this respect in existing film product, this project adopts unique filming technology condition, and product is had, and extraction is thorough, flux is large, filtering accuracy high.
Summary of the invention
Object of the present invention is exactly provide one to have to overcome defect that above-mentioned prior art exists to support hydrophilicity kynoar microporous barrier and preparation method thereof.
Object of the present invention can be achieved through the following technical solutions: one has support hydrophilicity kynoar microporous barrier, and it is characterized in that, the aperture of this microporous barrier is 0.1 ~ 20 μm, and thickness is 90 ~ 200 μm.
Have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, the method comprises the following steps:
1) formula of casting solution: first polyvinylidene fluoride resin is dissolved in a solvent, and add hydrophilic component and additive, at 30 ~ 80 DEG C, abundant stirring becomes the casting solution of stable homogeneous, wherein the content of polyvinylidene fluoride resin in casting solution is 10 ~ 25wt%, and the content of hydrophilic component in casting solution is 0.5 ~ 10wt%;
2) inversion of phases film forming: by casting solution curtain coating on supporting layer, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 15 ~ 40 μm, after leaving standstill 10 ~ 400 seconds in atmosphere, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
Polyvinylidene fluoride resins of polyvinylidene fluoride resin described in step (1) one or more mixing that to be weight average molecular weight be in 80000 ~ 1500000;
Described solvent is one or more in dimethyl formamide, dimethylacetylamide, dimethyl sulfoxide (DMSO), 1-METHYLPYRROLIDONE, triethyl phosphate, acetone or oxolane;
Described hydrophilic component is one or more in cellulose, polypropylene cyanogen, silica, polyvinyl alcohol, sulfonated polyether sulfone or polymethyl methacrylate;
Described additive is one or more in the polyethylene glycol of lithium chloride, calcium chloride, sodium chloride, polyvinylpyrrolidone, glycerine, n-butanol or Mw200 ~ 10000, and additive is 1 ~ 15wt% at the content in casting solution
The weight average molecular weight of described polyvinylidene fluoride resin is preferably 200000 ~ 600000.
The first coagulating bath described in step (2) is the aqueous solution containing additive, described additive is one or more in dimethylacetylamide, dimethyl formamide, dimethyl sulfoxide (DMSO) or 1-METHYLPYRROLIDONE, its mass concentration in coagulating bath is 0 ~ 60%, coagulation bath temperature is 10 ~ 70 DEG C, and diaphragm is 1 ~ 20 minute in this coagulating bath time of staying.
The second gelation described in step (2) is the aqueous solution containing additive, described additive is one or more in dimethylacetylamide, dimethyl formamide, dimethyl sulfoxide (DMSO) or 1-METHYLPYRROLIDONE, its mass concentration in coagulating bath is 0 ~ 30%, coagulation bath temperature is 10 ~ 50 DEG C, and diaphragm is 1 ~ 15 minute in this coagulating bath time of staying.
The 3rd coagulating bath described in step (2) is pure water coagulating bath, coagulation bath temperature is 50 ~ 85 DEG C, and diaphragm is 1 ~ 10 minute in this coagulating bath time of staying, installs ultrasonic cleaning equipment bottom coagulating bath, said ultrasonic cleaning equipment frequency is 10 ~ 300KHz, and power is 100 ~ 2000w.
Supporting layer described in step (2) is polyester non-woven fabric.
Described casting solution temperature is 20 ~ 60 DEG C.
Standing in atmosphere relative air humidity described in step (2) is 30 ~ 100%.
Compared with prior art, the present invention has the following advantages:
(1) by the mode of ultrasonic cleaning, residual solvent in fenestra, additive are extracted more thorough;
(2) by the strict constituent content and the temperature that control dual-bath coagulation, gained membrane aperture is evenly distributed, filtering accuracy and filter efficiency better;
(3) can be applicable to serialization large-scale production, properties of product are stablized.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
Have the preparation method supporting hydrophilicity kynoar microporous barrier, the method comprises the following steps:
1) formula of casting: be the polyvinylidene fluoride resin of 320000 by 56 gram-molecular weights, 3 grams of hydrophilic components, are dissolved in 331 grams of dimethylacetylamides under 10 grams of polyvinylpyrrolidones, 70 DEG C of conditions and become casting solution.By casting solution standing and defoaming about 24 hours.
2) inversion of phases film forming: be that the casting solution curtain coating of 40 DEG C is on supporting layer by temperature, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 20 μm, be leave standstill after 100 seconds in the air of 100% in relative humidity, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
In described first coagulating bath, dimethylacetamide amine content is 10wt%, and temperature is 50 DEG C, 5 minutes diaphragm time of staying;
In described the second gelation, dimethylacetamide amine content is 5wt%, and temperature is 20 DEG C, 2 minutes diaphragm time of staying;
Described 3rd coagulating bath pure water coagulating bath, temperature is 70 DEG C, 3 minutes diaphragm time of staying, and the frequency of ultrasonic cleaning equipment is 100KHz, and power is 200w.
Described supporting layer is polyester non-woven fabric.
Gained diaphragm thickness is 110 μm, and pore size is 3 μm, and adopting 25 DEG C of pure water to be the first bubble point pressure of tested media is 0.08MPa, and pure water flux is 20ml/cm
2(△ P=0.02MPa, diaphragm area is 20cm to min
2).
Embodiment 2
Have the preparation method supporting hydrophilicity kynoar microporous barrier, the method comprises the following steps:
1) formula of casting: be the polyvinylidene fluoride resin of 320000 by 66 gram-molecular weights, 4 grams of hydrophilic components, 10 grams of polyvinylpyrrolidones, 15 grams of polyethylene glycol (Mw400) are dissolved in 305 grams of dimethylacetylamides and become casting solution under 70 DEG C of conditions.By casting solution standing and defoaming about 24 hours.
2) inversion of phases film forming: be that the casting solution curtain coating of 40 DEG C is on supporting layer by temperature, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 30 μm, be leave standstill after 100 seconds in the air of 80% in relative humidity, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
In described first coagulating bath, dimethylacetamide amine content is 25wt%, and temperature is 40 DEG C, 10 minutes diaphragm time of staying;
In described the second gelation, dimethylacetamide amine content is 8wt%, and temperature is 20 DEG C, 5 minutes diaphragm time of staying;
Described 3rd coagulating bath pure water coagulating bath, temperature is 70 DEG C, 3 minutes diaphragm time of staying, and the frequency of ultrasonic cleaning equipment is 100KHz, and power is 200w.
Described supporting layer is polyester non-woven fabric.
Gained diaphragm thickness is 110 μm, and pore size is 0.45 μm, and adopting 25 DEG C of pure water to be the first bubble point pressure of tested media is 0.24MPa, and pure water flux is 6ml/cm
2(△ P=0.02MPa, diaphragm area is 20cm to min
2).
Embodiment 3
Have the preparation method supporting hydrophilicity kynoar microporous barrier, the method comprises the following steps:
1) formula of casting: be the polyvinylidene fluoride resin of 320000 by 78 grammes per square metre average molecular weights, 4 grams of hydrophilic components, 8 grams of polyvinylpyrrolidones, 20 grams of polyethylene glycol (Mw400) are dissolved in 300 grams of dimethylacetylamides and become casting solution under 70 DEG C of conditions.By casting solution standing and defoaming about 24 hours.
2) inversion of phases film forming: be that the casting solution curtain coating of 40 DEG C is on supporting layer by temperature, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 30 μm, be leave standstill after 80 seconds in the air of 80% in relative humidity, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
In described first coagulating bath, dimethylacetamide amine content is 35wt%, and temperature is 40 DEG C, 10 minutes time of staying;
In described the second gelation, dimethylacetamide amine content is 8wt%, and temperature is 20 DEG C, 5 minutes diaphragm time of staying:
Described 3rd coagulating bath pure water coagulating bath, temperature is 70 DEG C, 3 minutes diaphragm time of staying, and the frequency of ultrasonic cleaning equipment is 100KHz, and power is 200w.
Described supporting layer is polyester non-woven fabric.
Gained diaphragm thickness is 130 μm, and pore size is 0.22 μm, and adopting 25 DEG C of pure water to be the first bubble point pressure of tested media is 0.33MPa, and pure water flux is 3.5ml/cm
2(Δ P=0.02MPa, diaphragm area is 20cm to min
2).
Embodiment 4
Have the preparation method supporting hydrophilicity kynoar microporous barrier, the method comprises the following steps:
1) formula of casting solution: be first that 200000 polyvinylidene fluoride resins are dissolved in solvent dimethyl sulfoxide (DMSO) by weight average molecular weight, and add hydrophilic component cellulose and additive lithium chloride, at 30 DEG C, abundant stirring becomes the casting solution of stable homogeneous, wherein the content of polyvinylidene fluoride resin in casting solution is 10wt%, and the content of hydrophilic component in casting solution is 0.5wt%; The content of additive in casting solution is 1wt%.Casting solution standing and defoaming 24 hours.
2) inversion of phases film forming: be that the casting solution curtain coating of 20 DEG C is on supporting layer by temperature, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 15 μm, be leave standstill after 10 seconds in the air of 30% in relative humidity, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
The first described coagulating bath is the aqueous solution, and coagulation bath temperature is 60 DEG C, and diaphragm is 20 minutes in this coagulating bath time of staying.
Described the second gelation is the aqueous solution, and coagulation bath temperature is 50 DEG C, and diaphragm is 15 minutes in this coagulating bath time of staying.
The 3rd described coagulating bath is pure water coagulating bath, and coagulation bath temperature is 50 DEG C, and diaphragm is 10 minutes in this coagulating bath time of staying, installs ultrasonic cleaning equipment bottom coagulating bath, and said ultrasonic cleaning equipment frequency is 100KHz, and power is 2000w.
Described supporting layer is polyester non-woven fabric.
Gained diaphragm thickness is 90 μm, pore size 20 μm, and adopting 25 DEG C of pure water to be the first bubble point pressure of tested media is 0.03MPa, and pure water flux is 48ml/cm
2(Δ P=0.02MPa, diaphragm area is 20cm to min
2).
Embodiment 5
Have the preparation method supporting hydrophilicity kynoar microporous barrier, the method comprises the following steps:
1) formula of casting solution: be first that 600000 polyvinylidene fluoride resins are dissolved in solvent N-methyl pyrilidone by weight average molecular weight, and add hydrophilic component polypropylene cyanogen and additive glycerine, at 80 DEG C, abundant stirring becomes the casting solution of stable homogeneous, wherein the content of polyvinylidene fluoride resin in casting solution is 25wt%, and the content of hydrophilic component in casting solution is 10wt%; The content of additive in casting solution is 15wt%.Casting solution standing and defoaming 24 hours.
2) inversion of phases film forming: be that the casting solution curtain coating of 60 DEG C is on supporting layer by temperature, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 40 μm, be leave standstill after 400 seconds in the air of 100% in relative humidity, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
The first described coagulating bath is the aqueous solution containing additive, and described additive is 1-METHYLPYRROLIDONE, and its mass concentration in coagulating bath is 60%, and coagulation bath temperature is 25 DEG C, and diaphragm is 20 minutes in this coagulating bath time of staying.
Described the second gelation is the aqueous solution containing additive, and described additive is 1-METHYLPYRROLIDONE, and its mass concentration in coagulating bath is 30%, and coagulation bath temperature is 10 DEG C, and diaphragm is 15 minutes in this coagulating bath time of staying.
The 3rd described coagulating bath is pure water coagulating bath, and coagulation bath temperature is 85 DEG C, and diaphragm is 10 minutes in this coagulating bath time of staying, installs ultrasonic cleaning equipment bottom coagulating bath, and said ultrasonic cleaning equipment frequency is 300KHz, and power is 2000w.
Described supporting layer is polyester non-woven fabric.
Gained diaphragm thickness is 200 μm, and pore size is 0.1 μm, and adopting 25 DEG C of pure water to be the first bubble point pressure of tested media is 0.45MPa, and pure water flux is 2ml/cm
2(△ P=0.02MPa, diaphragm area is 20cm to min
2).
Claims (10)
1. have and support a hydrophilicity kynoar microporous barrier, it is characterized in that, the aperture of this microporous barrier is 0.1 ~ 20 μm, and thickness is 90 ~ 200 μm.
2. have the preparation method supporting hydrophilicity kynoar microporous barrier as claimed in claim 1, it is characterized in that, the method comprises the following steps:
1) formula of casting solution: first polyvinylidene fluoride resin is dissolved in a solvent, and add hydrophilic component and additive, at 30 ~ 80 DEG C, abundant stirring becomes the casting solution of stable homogeneous, wherein the content of polyvinylidene fluoride resin in casting solution is 10 ~ 25wt%, the content of hydrophilic component in casting solution is 0.5 ~ 10wt%, and the content of additive in casting solution is 1 ~ 15wt%;
2) inversion of phases film forming: by casting solution curtain coating on supporting layer, by the supporting layer scraper knifing of full for leaching casting solution, gap between scraper and supporting layer is 15 ~ 40 μm, after leaving standstill 10 ~ 400 seconds in atmosphere, take out after the first coagulating bath, the second gelation and the 3rd coagulating bath successively, after being dried by diaphragm, namely obtain described microporous hydrophilic membrane.
3. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, polyvinylidene fluoride resins of one or more mixing that to be weight average molecular weight be in 80000 ~ 1500000 of the polyvinylidene fluoride resin described in step (1);
Described solvent is one or more in dimethyl formamide, dimethylacetylamide, dimethyl sulfoxide (DMSO), 1-METHYLPYRROLIDONE, triethyl phosphate, acetone or oxolane;
Described hydrophilic component is one or more in cellulose, polypropylene cyanogen, silica, polyvinyl alcohol, sulfonated polyether sulfone or polymethyl methacrylate;
Described additive is one or more in the polyethylene glycol of lithium chloride, calcium chloride, sodium chloride, polyvinylpyrrolidone, glycerine, n-butanol or Mw200 ~ 10000.
4. according to claim 3 have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, the weight average molecular weight of described polyvinylidene fluoride resin is preferably 200000 ~ 600000.
5. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, the first coagulating bath described in step (2) is the aqueous solution containing additive, described additive is one or more in dimethylacetylamide, dimethyl formamide, dimethyl sulfoxide (DMSO) or 1-METHYLPYRROLIDONE, its mass concentration in coagulating bath is 0 ~ 60%, coagulation bath temperature is 25 ~ 60 DEG C, and diaphragm is 1 ~ 20 minute in this coagulating bath time of staying.
6. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, the second gelation described in step (2) is the aqueous solution containing additive, described additive is one or more in dimethylacetylamide, dimethyl formamide, dimethyl sulfoxide (DMSO) or 1-METHYLPYRROLIDONE, its mass concentration in coagulating bath is 0 ~ 30%, coagulation bath temperature is 10 ~ 50 DEG C, and diaphragm is 1 ~ 15 minute in this coagulating bath time of staying.
7. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, the 3rd coagulating bath described in step (2) is pure water coagulating bath, coagulation bath temperature is 50 ~ 85 DEG C, diaphragm is 1 ~ 10 minute in this coagulating bath time of staying, install ultrasonic cleaning equipment bottom coagulating bath, said ultrasonic cleaning equipment frequency is 10 ~ 300KHz, and power is 100 ~ 2000w.
8. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, and it is characterized in that, the supporting layer described in step (2) is polyester non-woven fabric.
9. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, and it is characterized in that, described casting solution temperature is 20 ~ 60 DEG C.
10. according to claim 2 have the preparation method supporting hydrophilicity kynoar microporous barrier, it is characterized in that, the standing in atmosphere relative air humidity described in step (2) is 30 ~ 100%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3261761B2 (en) * | 1992-09-04 | 2002-03-04 | エヌオーケー株式会社 | Method for producing polyvinylidene fluoride porous membrane |
| CN101015773A (en) * | 2006-12-29 | 2007-08-15 | 浙江大学 | Porous polyvinylidene blending porous membrane and process for producing same |
| CN102600733A (en) * | 2012-03-28 | 2012-07-25 | 天津工业大学 | Preparation method for homogeneously-enhanced polyvinylidene fluoride hollow fiber membrane |
| CN102614786A (en) * | 2012-04-24 | 2012-08-01 | 柳州森淼环保技术开发有限公司 | Preparation method of polyvinylidene fluoride ultramicro-filtration dry membrane for flat-plate MBR (membrane bioreactor) |
| CN103071394A (en) * | 2013-02-08 | 2013-05-01 | 上海中科高等研究院 | Preparation method of high-flux hydrophilic microporous filtering film and application thereof |
-
2013
- 2013-11-28 CN CN201310625740.XA patent/CN104667763B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3261761B2 (en) * | 1992-09-04 | 2002-03-04 | エヌオーケー株式会社 | Method for producing polyvinylidene fluoride porous membrane |
| CN101015773A (en) * | 2006-12-29 | 2007-08-15 | 浙江大学 | Porous polyvinylidene blending porous membrane and process for producing same |
| CN102600733A (en) * | 2012-03-28 | 2012-07-25 | 天津工业大学 | Preparation method for homogeneously-enhanced polyvinylidene fluoride hollow fiber membrane |
| CN102614786A (en) * | 2012-04-24 | 2012-08-01 | 柳州森淼环保技术开发有限公司 | Preparation method of polyvinylidene fluoride ultramicro-filtration dry membrane for flat-plate MBR (membrane bioreactor) |
| CN103071394A (en) * | 2013-02-08 | 2013-05-01 | 上海中科高等研究院 | Preparation method of high-flux hydrophilic microporous filtering film and application thereof |
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| CN109529636A (en) * | 2018-12-12 | 2019-03-29 | 合肥信达膜科技有限公司 | A kind of polyvinylidene fluoride film and preparation method thereof |
| CN109464921A (en) * | 2018-12-29 | 2019-03-15 | 上海鸣过滤技术有限公司 | A kind of super large flux Kynoar micropore stretched film and preparation method thereof |
| CN109772182A (en) * | 2018-12-29 | 2019-05-21 | 清大国华环境集团股份有限公司 | A kind of preparation method of modified polyvinilidene fluoride film |
| CN109772182B (en) * | 2018-12-29 | 2021-11-26 | 清大国华环境集团股份有限公司 | Preparation method of modified polyvinylidene fluoride membrane |
| CN110327793A (en) * | 2019-07-08 | 2019-10-15 | 广西国宏智鸿环境科技发展有限公司 | A kind of ultrafiltration membrane and preparation method thereof |
| CN113952850A (en) * | 2021-11-16 | 2022-01-21 | 上海一鸣过滤技术有限公司 | GO-MOF modified polyvinylidene fluoride flat membrane and preparation method and application thereof |
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