CN201768498U - Highly hydrophilic ultrafiltration membrane manufacturing device - Google Patents
Highly hydrophilic ultrafiltration membrane manufacturing device Download PDFInfo
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- CN201768498U CN201768498U CN201020255174XU CN201020255174U CN201768498U CN 201768498 U CN201768498 U CN 201768498U CN 201020255174X U CN201020255174X U CN 201020255174XU CN 201020255174 U CN201020255174 U CN 201020255174U CN 201768498 U CN201768498 U CN 201768498U
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Abstract
The utility model discloses a highly hydrophilic ultrafiltration membrane manufacturing device, which comprises a plasma alcoholization chamber, a radio frequency generator, a temperature controller, a vacuum pump, an ethanol tank, a vacuum gauge, a gas flowmeter, a gas pressure meter and a gas switch. The ethanol tank, the gas switch, the plasma alcoholization chamber and the vacuum pump are connected in sequence through a gas pipeline, the radio frequency generator and the temperature controller are connected with the plasma alcoholization chamber through circuits, the gas pressure meter is connected with the gas pipeline to detect gas pressure, and the vacuum gauge is connected with the plasma alcoholization chamber to detect vacuum degree. The manufacturing device is simple in structure, can change common hydrophily or hydrophobicity of the surface of an ultrafiltration membrane into high hydrophily by aid of plasma alcoholization technique, manufactures common ultrafiltration membranes into pollution-resistant ultrafiltration membrane, can realize less washing, long service life and high efficiency of the ultrafiltration membranes in use, and creates evident economic benefits.
Description
Technical field
The utility model relates to the technology of preparing of ultra-hydrophilic type ultrafiltration membrane, relates in particular to a kind of making apparatus of ultra-hydrophilic type ultrafiltration membrane, belongs to water treatment and membrane separation technique field.
Background technology
Membrane separation technique can be used for the deep purifying of water treatment.Compare with conventional treatment process, it can be removed and smell flavor, colourity, microorganism, DBPs precursor and some other organic matters in the water, guarantees better and more reliable water quality.Membrane separation technique need not add medicament, can not cause secondary pollution; Facility compact, floor space is little and be easy to automatic control.Membrane separation technique outside the production of pure water and ultra-pure water, also is used for fields such as food, medicine, oil, chemical industry, environmental protection and bioengineering except being used for the desalination of seawater and bitter.
Membrane material is the core of membrane separation technique.Membrane material at first will possess good film forming, basic zero defect and energy large-scale production; It is less important to possess performances such as heat-resisting, acid and alkali-resistance, anti-microbial attack, anti-solvent and resistance to oxidation.In order to obtain the big and strong film of contamination resistance of water flux, water treatment is preferably adopted the hydrophilic film material with film.
The plasma treatment technology is one of present membrane surface modification most popular method, handles by the plasma alcoholization, can make the wettability of general high-molecular organic material become Superhydrophilic.
Milipore filter with film this as separating medium, under pressure, utilize the fenestra size of milipore filter to separate, concentrate or purification solution in solute and impurity.Its separating mechanism is commonly considered as sieving actoion, and therefore, milipore filter is also referred to as molecular screen membrane.It can be isolated relative molecular mass and be about 300 carbohydrate and 200,000 protein.Usually use the sign of the relative molecular mass of the component of damming as milipore filter, stalling characteristic can be described the interception capacity of different relative molecular masses with film, with respect to the classification separation extreme.Generally separation extreme need only be described when film is characterized, both certain molecule of 90% (or 95%) was dammed, and the molal weight of this molecule just is called as molecular weight cut off.The typical molecular separation limit of milipore filter is 10
3～10
5, its operating pressure is generally 0.1～0.5MPa.
Kynoar (PVDF) is because low price, and heat endurance and chemical stability are good, are the ideal materials for preparing milipore filter at present.But the hydrophilicity of polyvinylidene fluoride (PVDF) ultrafiltration membrane is bad, and contact angle is about 90 °, belongs to hydrophobic substantially or the pressure hydrophily.Make that in the water treatment running there are problems such as easy pollution, backwash and shutdown scavenging period be more in polyvinylidene fluoride (PVDF) ultrafiltration membrane, has limited its popularization and use in water factory greatly.Therefore, how common polyvinylidene fluoride (PVDF) ultrafiltration membrane is made the polyvinylidene fluoride (PVDF) ultrafiltration membrane of anti-pollution, long-life ultra-hydrophilic type efficiently, enlarge the scope of application and the service time of polyvinylidene fluoride (PVDF) ultrafiltration membrane, realize high value added utilization, creating remarkable economic efficiency is present urgent problem.
The utility model content
The utility model embodiment provides a kind of making apparatus of ultra-hydrophilic type ultrafiltration membrane, utilizes plasma alcoholization treatment technology to make high efficiency, resistant to pollution ultra-hydrophilic type ultrafiltration membrane, and the use that makes milipore filter is anti-pollution, more economical, longer service life more.
The purpose of this utility model is achieved through the following technical solutions:
The utility model embodiment provides a kind of making apparatus of ultra-hydrophilic type ultrafiltration membrane, comprising:
Plasma alcoholization chamber, radio frequency generator, temperature controller, vavuum pump, vacuscope, ethanol jar, gas flowmeter, air gauge and gas switch;
Described plasma alcoholization chamber is a closed container, is provided with the sample platform of placing the sample of handling in it, is respectively equipped with two groups of copper coils on the chamber body of counter sample platform;
Described radio frequency generator refines the copper coil that is provided with on the chamber body of chamber with described plasma and is electrically connected, and refines the indoor plasma radiofrequency signal that sends through copper coil to plasma;
It is indoor that the end of probe of described temperature controller is arranged on described plasma alcoholization, surveys the indoor temperature of described plasma alcoholization;
Described vavuum pump refines indoor the connection with plasma by the road, and described pipeline is provided with gauge tap, and control is to surveying indoor the vacuumizing of plasma alcoholization;
It is indoor that the end of probe of described vacuscope is arranged on the plasma alcoholization, surveys the indoor vacuum of plasma alcoholization;
Described ethanol jar refines indoor the connection with plasma by the road, and pipeline is provided with gas switch, air gauge and gas flowmeter.
The technical scheme that provides by the utility model embodiment as can be seen, among the utility model embodiment by the preparation casting solution, leave standstill after slaking deaeration, striking liquid film and liquid film solidify, make nascent membrane, newborn milipore filter through flushing, immersion and oven dry, after alcoholization is handled through plasma, make super hydrophilic and resistant to pollution milipore filter.This method has following advantage: the surface texture that can not destroy milipore filter is handled in the alcoholization of (1) plasma; (2) the plasma alcoholization is handled and is not changed milipore filter interior molecules composition, and milipore filter mechanical strength and performance do not change; The wettability of the milipore filter after (3) alcoholization is handled becomes super hydrophilic, and anti-fouling performance improves greatly, is convenient to practical application and popularization; (4) because the raising of anti-fouling performance has reduced the milipore filter backwash and shut down wash number, improved equipment operating efficiency; (5) whole process of preparation is simple to operate, easy realization of large-scale production.This method can increase the service life of milipore filter, creates remarkable economic efficiency.
Description of drawings
The structural representation of the making apparatus that Fig. 1 provides for the utility model embodiment two
The preparation method flow chart that Fig. 2 provides for the utility model embodiment one.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of making apparatus of ultra-hydrophilic type ultrafiltration membrane, and this making apparatus can be used for handling the making ultra-hydrophilic type ultrafiltration membrane with the plasma alcoholization, and as shown in Figure 1, this making apparatus comprises:
Plasma alcoholization chamber 1, radio frequency generator 4, temperature controller 5, vavuum pump 6, vacuscope 5, ethanol jar 10, gas flowmeter 15, air gauge 16 and gas switch;
Described plasma alcoholization chamber 1 is a closed container, which is provided with sample and pick and place mouth, sample picks and places mouth can open or close plasma alcoholization chamber 1, close post plasma alcoholization chamber 1 and form closed container, be provided with in the plasma alcoholization chamber 1 and place the sample platform 2 of handling sample, be respectively equipped with two groups of copper coils 3 on the chamber body of the plasma alcoholization chamber 1 of counter sample platform 2; Two groups of corresponding respectively plasmas that are arranged on sample platform 2 upper and lowers in the plasma alcoholization chamber 1 of copper coil 3 refine on the chamber body of chamber;
Described radio frequency generator 4 is electrically connected with the copper coil 3 that described plasma alcoholization chamber 1 is provided with, and is used for sending the plasma radiofrequency signal through copper coil 3 in plasma alcoholization chamber 1; It is the RF plasma reactor of 40～100W that radio frequency generator 4 can adopt power.
The end of probe of described temperature controller 5 is arranged in the described plasma alcoholization chamber 1, is used to survey the temperature in the described plasma alcoholization chamber 1;
Described vavuum pump 6 is by pipeline 9 and 1 interior connection of plasma alcoholization chamber, and pipeline 9 is provided with gauge tap 8, is used for vacuumizing in the article on plasma alcoholization chamber 1;
The end of probe of described vacuscope 7 is arranged in the plasma alcoholization chamber 1, is used to survey the vacuum in the plasma alcoholization chamber 1;
Described ethanol jar 10 by the road 11 with plasma alcoholization chamber 1 in be communicated with, pipeline 11 is provided with gas switch 12,13 and 14, air gauge 16 and gas flowmeter 15.Wherein, ethanol jar 10 connects three gas switch 12,13 and 14 that are provided with on the pipeline 11 in the plasmas alcoholization chambers 1, and described gas flowmeter 15 is connected on the pipeline 11 between first gas switch 12 and second gas switch 13.
During the actual use of above-mentioned making apparatus, after plasma refines the sample (nascent membrane) 20 of packing in the chamber, close first gas switch 12, second gas switch 13 on the indoor pipeline of ethanol jar connection plasma alcoholization earlier, open the 3rd gas switch 14 and gauge tap 8, open in the vavuum pump 6 article on plasma alcoholization chamber 1 and vacuumize, survey vacuums by vacuscope 7 and reach 10
-3Pa; Open first gas switch 12 and second gas switch 13, in plasma alcoholization chamber 1, feed alcohol gas by ethanol jar 10, when the chamber of plasma alcoholization by the time 1 internal gas pressure is raised to 0.5～1Pa, open radio frequency generator 4, in temperature is 70 ℃～95 ℃, detecting the alcohol gas flows by gas flowmeter 15 is 50～120sccm, and radio-frequency power is to carry out the plasma alcoholization under the condition of 40～100W to handle, and the alcoholization processing time is 5～15 minutes; After the alcoholization processing finishes, close radio frequency generator and temperature controller and vavuum pump earlier, when treating that plasma alcoholization indoor temperature is reduced to normal temperature, close the alcohol gas that gas flowmeter and ethanol jar provide again, promptly obtain super hydrophilic resistant to pollution milipore filter after the nascent membrane alcoholization after the oven dry is handled.
Utilize in the above-mentioned making apparatus, handled nascent membrane as sample can prepare by following step, specifically comprises:
A, preparation casting solution: in temperature is under 30 ℃～58 ℃ conditions, and macromolecule member material, additive (comprising inorganic additive and organic additive) fully are dissolved or dispersed in the solvent, is mixed with casting solution,
Among the above-mentioned steps a, the consumption of each raw material is by mass percentage: macromolecule member material 15～23%, reinforcing agent 0.5～3%, pore former 3～18% and solvent 56～81%;
Wherein macromolecule member material adopts is the composition that is mixed to form by 30: 3: 1 mass ratio by Kynoar, aromatic polyamides and sulfonated polyether sulfone; Additive is reinforcing agent and pore former, reinforcing agent adopts nano zine oxide, methyl methacrylate and the styrene terpolymer by 1: 5: 4 mass ratio mixing formation, and pore former adopts polyethylene glycol and polyvinylpyrrolidone to mix the mixture of formation by 2: 1 mass ratio; Solvent adopts the N-N-methyl-2-2-pyrrolidone N-;
During preparation, each component is mixed with casting solution down for 30 ℃～58 ℃ in temperature behind abundant stirring and evenly mixing;
B, leave standstill the slaking deaeration: under 21 ℃～28 ℃ room temperature condition, left standstill 24～48 hours, make its slaking deaeration;
C, striking liquid film: after the slaking deaeration, striking one layer thickness is the liquid film of 0.1～1.2mm on the glass plate of cleaning or polyester non-woven fabric;
D, liquid film solidify: liquid film is immersed in the distilled water of 5 ℃～16 ℃ of temperature together with glass plate, liquid film is peeled off from glass plate;
E, flushing, immersion and oven dry: use the distilled water flushing nascent membrane, the time of flushing nascent membrane is 2～9 minutes; It with temperature 10～16 ℃ distilled water immersion nascent membrane 24～48 hours; Nascent membrane after soaking is put into baking oven under 30～45 ℃ of temperature, dry nascent membrane;
Nascent membrane after the oven dry is put into the plasma alcoholization chamber 1 of the making apparatus that present embodiment provides, the article on plasma alcoholization vacuumizes earlier in the chamber 1, feeding alcohol gas again waits until when plasma alcoholization chamber 1 internal gas pressure is raised to 0.5～1Pa, open temperature controller, the control temperature is 70 ℃～95 ℃, and the alcohol gas flow is 50～120sccm, begin to start the radio frequency generator, the power of radio frequency generator is 40～100W, refines processing, and the alcoholization processing time is 5～15 minutes; After the alcoholization processing finishes, when treating that the RF plasma reactor indoor temperature is reduced to normal temperature, close alcohol gas again, alcoholization promptly obtains resistant to pollution ultra-hydrophilic type ultrafiltration membrane after handling.
In sum, cooperate by each parts among the utility model embodiment, utilize plasma alcoholization treatment technology to prepare the resistant to pollution ultra-hydrophilic type ultrafiltration membrane of high efficiency, improve the performance of milipore filter, the service life that has increased milipore filter and efficient greatly, reached the purpose that the preparation and the performance of milipore filter are effectively improved.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (5)
1. the making apparatus of a ultra-hydrophilic type ultrafiltration membrane is characterized in that, comprising:
Plasma alcoholization chamber, radio frequency generator, temperature controller, vavuum pump, vacuscope, ethanol jar, gas flowmeter, air gauge and gas switch;
Described plasma alcoholization chamber is a closed container, is provided with the sample platform of placing the sample of handling in it, is respectively equipped with two groups of copper coils on the chamber body of counter sample platform;
Described radio frequency generator refines the copper coil that is provided with on the chamber body of chamber with described plasma and is electrically connected, and refines the indoor plasma radiofrequency signal that sends through copper coil to plasma;
It is indoor that the end of probe of described temperature controller is arranged on described plasma alcoholization, surveys the indoor temperature of described plasma alcoholization;
Described vavuum pump refines indoor the connection with plasma by the road, and described pipeline is provided with gauge tap, and control is to surveying indoor the vacuumizing of plasma alcoholization;
It is indoor that the end of probe of described vacuscope is arranged on the plasma alcoholization, surveys the indoor vacuum of plasma alcoholization;
Described ethanol jar refines indoor the connection with plasma by the road, and pipeline is provided with gas switch, air gauge and gas flowmeter.
2. the making apparatus of ultra-hydrophilic type ultrafiltration membrane as claimed in claim 1, it is characterized in that, it is three that described ethanol jar connects the gas switch that is provided with on the indoor pipeline of plasma alcoholization, and described gas flowmeter is connected on the pipeline between first gas switch and second gas switch.
3. the making apparatus of ultra-hydrophilic type ultrafiltration membrane as claimed in claim 1 is characterized in that, described plasma alcoholization chamber is provided with sample and picks and places mouth, picks and places mouth by sample and can open or close plasma alcoholization chamber.
4. the making apparatus of ultra-hydrophilic type ultrafiltration membrane as claimed in claim 1 is characterized in that, described radio frequency generator is a RF plasma reactor, and its power is 40～100W.
5. the making apparatus of ultra-hydrophilic type ultrafiltration membrane as claimed in claim 1 is characterized in that, the corresponding respectively plasma that is arranged on described sample platform upper and lower of described two groups of copper coils refines on the chamber body of chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020255174XU CN201768498U (en) | 2010-06-30 | 2010-06-30 | Highly hydrophilic ultrafiltration membrane manufacturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020255174XU CN201768498U (en) | 2010-06-30 | 2010-06-30 | Highly hydrophilic ultrafiltration membrane manufacturing device |
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| CN201768498U true CN201768498U (en) | 2011-03-23 |
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| CN201020255174XU Expired - Fee Related CN201768498U (en) | 2010-06-30 | 2010-06-30 | Highly hydrophilic ultrafiltration membrane manufacturing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879415A (en) * | 2010-06-30 | 2010-11-10 | 北京桑德环保集团有限公司 | Method and equipment for preparing ultra-hydrophilic type ultrafiltration membrane |
| CN114570213A (en) * | 2022-01-17 | 2022-06-03 | 纳美盾新材料有限公司 | Modified hollow fiber nanofiltration membrane and preparation method thereof |
-
2010
- 2010-06-30 CN CN201020255174XU patent/CN201768498U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879415A (en) * | 2010-06-30 | 2010-11-10 | 北京桑德环保集团有限公司 | Method and equipment for preparing ultra-hydrophilic type ultrafiltration membrane |
| CN101879415B (en) * | 2010-06-30 | 2012-12-26 | 桑德集团有限公司 | Method and equipment for preparing ultra-hydrophilic type ultrafiltration membrane |
| CN114570213A (en) * | 2022-01-17 | 2022-06-03 | 纳美盾新材料有限公司 | Modified hollow fiber nanofiltration membrane and preparation method thereof |
| CN114570213B (en) * | 2022-01-17 | 2022-09-30 | 纳美盾新材料有限公司 | Modified hollow fiber nanofiltration membrane and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100081 Beijing city Haidian District North Shimonoseki street, No. 7 Patentee after: Sound Group Co.,Ltd. Address before: 100081 Beijing city Haidian District North Shimonoseki street, No. 7 Patentee before: Beijing Sound Group Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20190630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |