CN103418253A - Nitrocellulose microporous filtration membrane production process - Google Patents
Nitrocellulose microporous filtration membrane production process Download PDFInfo
- Publication number
- CN103418253A CN103418253A CN2012101522230A CN201210152223A CN103418253A CN 103418253 A CN103418253 A CN 103418253A CN 2012101522230 A CN2012101522230 A CN 2012101522230A CN 201210152223 A CN201210152223 A CN 201210152223A CN 103418253 A CN103418253 A CN 103418253A
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- CN
- China
- Prior art keywords
- celluloid
- filtration membrane
- roller
- production technology
- filter membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000012528 membrane Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000001914 filtration Methods 0.000 title abstract 6
- 239000000020 Nitrocellulose Substances 0.000 title abstract 4
- 229920001220 nitrocellulos Polymers 0.000 title abstract 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 238000009736 wetting Methods 0.000 claims abstract description 3
- 229920002160 Celluloid Polymers 0.000 claims description 17
- 238000004378 air conditioning Methods 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- 239000003085 diluting agent Substances 0.000 claims description 5
- 235000011187 glycerol Nutrition 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000013535 sea water Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 229920002477 rna polymer Polymers 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000011175 product filtration Methods 0.000 abstract 2
- 102000053602 DNA Human genes 0.000 abstract 1
- 108020004414 DNA Proteins 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 102000004169 proteins and genes Human genes 0.000 abstract 1
- 108090000623 proteins and genes Proteins 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a nitrocellulose microporous filtration membrane production process. According to the invention, a nitrocellulose high-molecular material is dissolved in an organic solvent; water-soluble glycerol is added as a wetting additive of a finished product filtration membrane; the solution is uniformly flatly paved on a continuously rotating roller or conveyor belt; air conditioner air and the solution contact, such that a phase conversion process is carried out, and a filtration membrane is formed; the primary filtration membrane on the roller or conveyor belt is subjected to final forming in a water bath tank with a temperature of 5-50 DEG C; the formed nitrocellulose microporous filtration membrane is peeled from the roller or conveyor belt; and processing steps such as washing and back-drying are carried out. The method provided by the invention has the advantages of simple process and easy operation. The product filtration membrane has good absorption capacity upon protein, ribonucleic acid, and deoxyribonucleic acid. The filtration membrane is an excellent biochemical substance transfer film material.
Description
Technical field:
The present invention relates to a kind of hydrophilic microporous filter membrane.
Summary of the invention:
In biochemical substances check field, for micro-protein and ribonucleic acid or nuclifort test, because sampling amount is minimum basically, there is no at present effective believable scientific method in check, directly test.Based on this, the replacement scheme is to use the great material of biochemical substances adsorptivity, and the biochemical substances in advance trace separated, be transferred in certain material surface, then carry out indirect detection through other modes.Due to the contained numerous micro-pores of miillpore filter, total body surface area is very big, therefore use the absorption transfer film of miillpore filter as biochemical substances, year more than going already.Transfer film material commonly used has nylon miillpore filter and celluloid miillpore filter.These two kinds non-brace type transfer films, the current domestic ability that any enterprise has the commercialization volume production that there is no.The transfer film of all above two kinds of materials is all from external import.The purpose of this invention is to provide a kind of micropore transfer film with high biochemical substances adsorptivity, its material is celluloid.
The production method of this celluloid miillpore filter is characterized in that:
1. the celluloid macromolecular material is dissolved in organic solvent, and adds the wetting additive of water-soluble glycerine as the finished product filter membrane;
2. above-mentioned solution is laid on the roller or conveyer belt of continuous rotation, Air Conditioning is contacted with solution, then by the nascent filter membrane on roller or on conveyer belt, put into 5 ℃ of-50 ℃ of sea water baths, carry out final shaping unit, then the filter membrane after moulding is peeled off from roller or conveyer belt;
3. during post processing, carry out not waiting Lian Huo etc. to connect filter membrane and stretch, then clean through cleaning fluid, then at 25 ℃ of-80 ℃ of temperature, carry out drying, obtain its finished product.
When the miillpore filter that the present invention is contained is applied as transfer film, the scope of its aperture between 0.1 micron to 0.45 micron.Its filter membrane surface hydrophilic character is that the water-soluble glycerine added in formula provides.Organic solvent used in the present invention comprises acetone or the high molecular machine solvent of other solubilized celluloid.The alcohols solvents such as ethanol, isopropyl alcohol, normal propyl alcohol can be as the formula diluent.
In formula rate, the celluloid macromolecule accounts for 15% to 25% weight portion, and organic solvent accounts for 30% to 60% weight portion, and organic diluent accounts for 20% to 40% weight portion, and glycerine accounts for 5% weight portion.When making celluloid miillpore filter " inversion of phases " process, filter membrane formula solution temperature is 10 ℃-35 ℃, the relative humidity of Air Conditioning is 40% to 95%, dry-bulb temperature is 10 ℃-50 ℃, dew-point temperature is 10 ℃-50 ℃, the Air Conditioning wind speed is 0.1 meter per second-7 meter per second, and Air Conditioning contacts the processing time with solution be 10 seconds to 30 minutes, and carrying out the final shaping unit processing time in 5 ℃ of-50 ℃ of sea water baths of nascent filter membrane immersion is 10 seconds to 30 minutes.During last handling process, cleaning agent is reverse osmose pure-water, and cleaning temperature is 10 ℃-50 ℃, and scavenging period is 1 to 120 minute.After cleaning, filter membrane enters drying course, and bake out temperature is 25 ℃-80 ℃, and drying time is 1 to 30 minute.
Claims (5)
1. the production technology of a porous celluloid miillpore filter is characterized in that:
1.1 the celluloid macromolecular material is dissolved in organic solvent, and adds the wetting additive of water-soluble glycerine as the finished product filter membrane, and organic diluent.
1.2 above-mentioned solution is laid on the roller or conveyer belt of continuous rotation, Air Conditioning is contacted with solution, then by the nascent filter membrane on roller or on conveyer belt, put into 5 ℃ of-50 ℃ of sea water baths, carry out final shaping unit, then the filter membrane after moulding is peeled off from roller or conveyer belt;
1.3 during post processing, filter membrane is carried out not waiting to the even stretchings such as Lian Huo, then cleans through cleaning fluid, then at 25 ℃ of-80 ℃ of temperature, carry out drying, obtain its finished product.
2. the production technology of celluloid miillpore filter according to claim 1 is characterized in that:
The celluloid macromolecular material accounts for 15% to 25% weight portion, and water-soluble glycerine accounts for 5% weight portion.
3. the production technology of celluloid miillpore filter according to claim 1, it is characterized in that: organic solvent comprises acetone or the high molecular organic solvent of other solubilized celluloid, and solvent accounts for 30% to 60% weight portion.
4. the production technology of celluloid miillpore filter according to claim 1, it is characterized in that: organic diluent comprises the alcohols solvents such as ethanol, isopropyl alcohol, normal propyl alcohol, and organic diluent accounts for 20% to 40% weight portion.
5. the production technology of celluloid miillpore filter according to claim 1, it is characterized in that: when making celluloid miillpore filter " inversion of phases " process, filter membrane formula solution temperature is 10 ℃-35 ℃, the relative humidity of Air Conditioning is 40% to 95%, dry-bulb temperature is 10 ℃-50 ℃, dew-point temperature is 10 ℃-50 ℃, and the Air Conditioning wind speed is 0.1 meter per second to 7 meter per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101522230A CN103418253A (en) | 2012-05-16 | 2012-05-16 | Nitrocellulose microporous filtration membrane production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101522230A CN103418253A (en) | 2012-05-16 | 2012-05-16 | Nitrocellulose microporous filtration membrane production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103418253A true CN103418253A (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101522230A Pending CN103418253A (en) | 2012-05-16 | 2012-05-16 | Nitrocellulose microporous filtration membrane production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103418253A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154123A (en) * | 2020-01-14 | 2020-05-15 | 上海市新亚净化器件厂 | Method for continuously preparing large-aperture nitrocellulose membrane |
| CN112114132A (en) * | 2020-08-28 | 2020-12-22 | 瑞捷生物科技江苏有限公司 | Carrier fixed with nitrocellulose membrane, preparation method and application thereof |
| CN114768545A (en) * | 2022-03-31 | 2022-07-22 | 青岛吉景新型材料有限公司 | Cellulose nitrate microporous membrane and continuous preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850322A (en) * | 2006-01-17 | 2006-10-25 | 亚美滤膜（南通）有限公司 | Method for producing porose semi-permeation filtering film |
| CN101091876A (en) * | 2007-05-18 | 2007-12-26 | 亚美滤膜（南通）有限公司 | Method for producing composite type semi permeable hydrophilic filter membrane |
| CN101219350A (en) * | 2007-10-11 | 2008-07-16 | 亚美滤膜（南通）有限公司 | Method for producing hydrophilic polyethersulfone millipore filter |
-
2012
- 2012-05-16 CN CN2012101522230A patent/CN103418253A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850322A (en) * | 2006-01-17 | 2006-10-25 | 亚美滤膜（南通）有限公司 | Method for producing porose semi-permeation filtering film |
| CN101091876A (en) * | 2007-05-18 | 2007-12-26 | 亚美滤膜（南通）有限公司 | Method for producing composite type semi permeable hydrophilic filter membrane |
| CN101219350A (en) * | 2007-10-11 | 2008-07-16 | 亚美滤膜（南通）有限公司 | Method for producing hydrophilic polyethersulfone millipore filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154123A (en) * | 2020-01-14 | 2020-05-15 | 上海市新亚净化器件厂 | Method for continuously preparing large-aperture nitrocellulose membrane |
| CN112114132A (en) * | 2020-08-28 | 2020-12-22 | 瑞捷生物科技江苏有限公司 | Carrier fixed with nitrocellulose membrane, preparation method and application thereof |
| CN114768545A (en) * | 2022-03-31 | 2022-07-22 | 青岛吉景新型材料有限公司 | Cellulose nitrate microporous membrane and continuous preparation method thereof |
| CN114768545B (en) * | 2022-03-31 | 2023-11-10 | 青岛吉景新型材料有限公司 | Nitrocellulose microporous membrane and continuous preparation method thereof |
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Application publication date: 20131204 |