CN105396467A - Polyvinylidene fluoride separation membrane - Google Patents
Polyvinylidene fluoride separation membrane Download PDFInfo
- Publication number
- CN105396467A CN105396467A CN201510936309.6A CN201510936309A CN105396467A CN 105396467 A CN105396467 A CN 105396467A CN 201510936309 A CN201510936309 A CN 201510936309A CN 105396467 A CN105396467 A CN 105396467A
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- weight portion
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- polyvinylidene fluoride
- kynoar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/22—Thermal or heat-resistance properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/30—Chemical resistance
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a polyvinylidene fluoride separation membrane; with polyvinylidene fluoride as a membrane raw material, polyvinylidene fluoride preparation comprises the following steps: 1) adding 1-2 parts by weight of polyacrylic acid, 1.9 parts by weight of hydrogen peroxide and 2.2 parts by weight of an inorganic alkali solution into a reaction kettle, mixing the raw materials evenly, and then adding 1.2 parts by weight of dodecyl trimethyl ammonium chloride, 14.5 parts by weight of a trichlorotrifluoroethane solvent and 1.8 parts by weight of an undecafluorohexanoyl fluoride solution, and carrying out a stirring reaction for 25 min at the temperature of -2 DEG C; 2) then adding 3.4 parts by weight of sorbitan fatty acid ester, 4.2 parts by weight of a hexyldecanol solution, 79 parts by weight of a vinylidene fluoride monomer and 1.8 parts by weight of isopropyl cyclopentane, carrying out a stirring reaction at the temperature of 24 DEG C, and stopping the reaction when the pressure drops to 0.23 MPa or less; and 3) filtering, washing, drying, and thus obtaining powdery polyvinylidene fluoride. The polyvinylidene fluoride separation membrane has the properties of corrosion resistance, heat resistance, cold resistance, oxidation resistance and weather resistance.
Description
Technical field
The present invention relates to polyvinylidene fluoride separation membrane.
Background technology
Corrosion-resistant, heat-resisting, cold-resistant, resistance to oxidation, the weather resistance of existing milipore filter, diffusion barrier, hollow-fibre membrane all have much room for improvement.
Summary of the invention
The object of the present invention is to provide a kind of polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, and the film of preparation has excellent corrosion-resistant, heat-resisting, cold-resistant, resistance to oxidation, weather resistance.
For achieving the above object, technical scheme of the present invention is a kind of polyvinylidene fluoride separation membrane of design, and take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 1 ~ 2 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
Preferably, polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 1 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
Preferably, polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 2 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
Advantage of the present invention and beneficial effect are: provide a kind of polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, and the film of preparation has excellent corrosion-resistant, heat-resisting, cold-resistant, resistance to oxidation, weather resistance.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The technical scheme that the present invention specifically implements is:
Embodiment 1
A kind of polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 1 ~ 2 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
Embodiment 2
Polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 1 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
Embodiment 3
Polyvinylidene fluoride separation membrane, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 2 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. polyvinylidene fluoride separation membrane, is characterized in that, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 1 ~ 2 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
2. polyvinylidene fluoride separation membrane according to claim 1, is characterized in that, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 1 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
3. polyvinylidene fluoride separation membrane according to claim 1, is characterized in that, take Kynoar as the raw material of film, described Kynoar is prepared as follows:
1) 2 parts by weight of polypropylene acid, 1.9 weight portion hydrogen peroxide, 2.2 parts by weight of inorganic aqueous slkalis are dropped in reactor, mix, drop into 1.2 weight portion DTACs, 14.5 weight portion trifluorotrichloroethane solvents, 1.8 weight portion 11 fluorine hexanoyl fluorine solution again ,-2 DEG C of stirring reactions 25 minutes;
2) drop into 3.4 weight portion sorbitan fatty acid esters, 4.2 weight portion hexyl decyl alcohol solution, 79 weight portion vinylidene fluoride monomers, 1.8 weight portion isopropyl cyclopentane again, at 24 DEG C of stirring reactions, pressure drop is to cessation reaction during below 0.23MPa;
3) filtration, washing, drying, obtain Powdered Kynoar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936309.6A CN105396467A (en) | 2015-12-16 | 2015-12-16 | Polyvinylidene fluoride separation membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936309.6A CN105396467A (en) | 2015-12-16 | 2015-12-16 | Polyvinylidene fluoride separation membrane |
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| Publication Number | Publication Date |
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| CN105396467A true CN105396467A (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510936309.6A Withdrawn CN105396467A (en) | 2015-12-16 | 2015-12-16 | Polyvinylidene fluoride separation membrane |
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| CN (1) | CN105396467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366520A (en) * | 2016-08-30 | 2017-02-01 | 常熟三爱富振氟新材料有限公司 | Pvdf elbow |
-
2015
- 2015-12-16 CN CN201510936309.6A patent/CN105396467A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366520A (en) * | 2016-08-30 | 2017-02-01 | 常熟三爱富振氟新材料有限公司 | Pvdf elbow |
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Application publication date: 20160316 |