CN203625279U - Device for preparing polymer symmetric porous membrane by complete evaporation method - Google Patents
Device for preparing polymer symmetric porous membrane by complete evaporation method Download PDFInfo
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- CN203625279U CN203625279U CN201320861640.2U CN201320861640U CN203625279U CN 203625279 U CN203625279 U CN 203625279U CN 201320861640 U CN201320861640 U CN 201320861640U CN 203625279 U CN203625279 U CN 203625279U
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- film
- translucent cover
- film forming
- polymkeric substance
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- 238000001704 evaporation Methods 0.000 title claims abstract description 24
- 239000012528 membrane Substances 0.000 title abstract description 14
- 229920000642 polymer Polymers 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000008020 evaporation Effects 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 abstract description 23
- 238000000605 extraction Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a device of polymer symmetry porous membrane is prepared to complete evaporation method, including base, mounting groove, translucent cover, the film forming recess, adjusting device, constant temperature control system, air exhaust system etc.. The device of the utility model can ensure the uniform thickness of the formed film; by utilizing the constant-temperature control system and the air extraction system, the speed of the solvent in the solution diffusing into the upper surface of the solution is equal to the speed of the solvent diffusing into the gas, and the energy is continuously diffused, so that no skin layer is formed on the upper surface of the film in the film forming process; the utility model discloses a complete evaporation method preparation polymer porous membrane provides the experimental basis for symmetrical porous membrane and the even membrane of thickness.
Description
Technical field
The utility model relates to chemical equipment field, and particularly a kind of complete method of evaporation is prepared the device of the symmetrical porous-film of polymkeric substance.
Background technology
Membrane product is widely used in the fields such as poly-lithium battery, membrane sepn, membrane permeation.
Method of evaporation film forming is the principle changing based on mutually completely.After solution-cast, solvent evaporates immediately.Because solvent is more faster than solution inside with air interface velocity of evaporation from casting liquid, so exhaust rapidly at interface solvent, polymer concentration increases. and polymkeric substance is separated out from solution, form the cortex being formed by micella.After cortex forms, evaporation rate of solvent is slack-off, so that the gelation rate of understructure is much slower than cortex.Along with the continuous evaporation of solvent, the dissolving power of last residual solvent is not enough so that all components maintain homogeneous phase true solution state, is separated.Because solvent ratio pore-creating agent is volatile, after a large amount of solvent evaporates, still remaining a certain amount of pore-creating agent, pore-creating agent is separated the small droplets that forms disperse phase from homogeneous phase solution---be polymer-poor phase, be gathered in small droplets polymer molecule around and be external phase---be polymer-rich phase.Final polymer-rich phase forms the skeleton of film, and polymer-poor phase forms the micropore of film.So applying the film that complete method of evaporation makes is asymmetric membrane.
Therefore, be controlled to the rate of volatilization of solvent in membrane process and become the optimal path that polyalcohol stephanoporate symmetric membrane is prepared in the formation of inhibition cortex.In the prior art, due to improper to film-forming temperature, solvent saturation ratio and solvent evaporates rate-controlling, causing institute's film forming is asymmetric porous membrane.Also do not prepare at present the device of the symmetrical porous-film of polymkeric substance.
Summary of the invention
Technical problem to be solved in the utility model is, for prior art deficiency, the device that provides a kind of complete method of evaporation to prepare the symmetrical porous-film of polymkeric substance, preparing polymer porous membrane for method of evaporation completely provides experiment basis for symmetrical porous-film and even thickness film.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of complete method of evaporation is prepared the device of the symmetrical porous-film of polymkeric substance, comprises base, and described base is provided with translucent cover; Base upper surface in described translucent cover offers film forming groove; Base upper surface between described film forming groove and described translucent cover bottom is provided with level indicator, and the base upper surface between described film forming groove and described translucent cover bottom also offers volatilization groove; Described translucent cover one upper lateral part offers the air outlet for being communicated with air-bleed system, and translucent cover one side lower part of described air outlet relative position offers the inlet mouth for being communicated with described air-bleed system; Base inside under described film forming groove is fixed with constant-temperature temperature-control system; Described base bottom is provided with the setting device that can regulate described base to be horizontal.
Compared with prior art, the beneficial effect that the utility model has is: level indicator of the present utility model and setting device can guarantee that film forming liquid is in horizontality, guarantees institute's film forming thickness homogeneous; Utilize constant-temperature temperature-control system and air-bleed system, the speed that can make solution internal solvent diffuse into solution upper surface equates with the speed that solvent diffusion enters in gas, and can continuously spread, thereby the upper surface of film in film process is formed without cortex; The utility model is prepared polymer porous membrane for complete method of evaporation provides experiment basis for symmetrical porous-film and even thickness film.
Accompanying drawing explanation
Fig. 1 is the utility model one embodiment front view;
Fig. 2 is the utility model one embodiment vertical view;
Fig. 3 is the utility model one embodiment constant-temperature temperature-control system circuit diagram;
Fig. 4 is the utility model one embodiment air-bleed system schematic circuit;
Fig. 5 is the utility model one embodiment air-bleed system vertical view;
Fig. 6 is the utility model one embodiment air-bleed system front view.
Embodiment
As depicted in figs. 1 and 2, the utility model one embodiment comprises base 3, and described base 3 is provided with translucent cover 1, and described translucent cover 1 bottom coincide with the mounting groove 2 that is opened in described base 1 upper surface; Base 3 upper surfaces in described translucent cover 1 offer film forming groove 7; Base 3 upper surfaces between described film forming groove 7 and described mounting groove 2 are provided with level indicator 4, and base 3 upper surfaces between described film forming groove 7 and described mounting groove 2 also offer volatilization groove 9; Described translucent cover 1 one upper lateral parts offer air outlet, and 10 1 ports in described air outlet and the first two-way valve are connected, and translucent cover 1 one side lower parts of described air outlet relative position offer inlet mouth, and 11 1 ports of described inlet mouth and the second two-way valve are connected; Base 3 inside of described film forming groove 7 belows are fixed with constant-temperature temperature-control system; Described base 3 bottoms are provided with the setting device that can regulate described base 3 to be horizontal; Described setting device comprises the stationary bearing 6 and two lifting supports 5 that are fixed on described base 3 bottoms; Described translucent cover 1 top is fixed with handle 8.
During due to solvent and pore-creating agent volatilization, be from the bottom to top, give vent to anger and when bottom air inlet can be played ventilation, take away the effect of solvent and pore-creating agent by transparent cell top.The utility model uses two-way valve, and both can guarantee to take a breath time, air-flow be unimpeded, can in case of emergency control separately again the switching of ventpipe.
In the present embodiment, mounting groove 2 cross sections are annular; Film forming groove cross section is circular, because the impact on border can make the thickness of institute's film forming diminish gradually from border to central position, in the time being greater than 4cm, this impact can be ignored, and the film that is therefore designed to center of circle assurance is evenly saved again material everywhere; Volatilization groove 9 cross sections are rectangle, pour into and first pour solvent and pore-creating agent before film forming liquid into volatilization groove in film forming groove, after volatilization 10min to 40min, make atmosphere saturated.
As shown in Figure 3, the constant-temperature temperature-control system of the present embodiment comprises heating power supply 14, resistive heater 12 and temperature control equipment 13, and described heating power supply 14, resistive heater 12 and temperature control equipment 13(can use Eurotherm company 3504 type temperature regulators) be in turn connected to form loop.
As shown in Fig. 4～Fig. 6, the air-bleed system of the present embodiment comprises mount pad 17, on described mount pad 17, offer the air inlet port 19 and the production well 20 that run through described mount pad 17, described air inlet port 19 and production well 20 be interior is respectively provided with a vacuum fan 15, described air inlet port 19 is connected with another port of described the second two-way valve 11, and described production well 20 is connected with another port of described the first two-way valve 10; On described mount pad 17, be provided with and show and adjustment control 16; The motor parallel composition parallel branch of two vacuum fan 15; Described demonstration and adjustment control 16 are connected with described parallel branch one end; Described demonstration and adjustment control 16(can use the TEXAS INSTRUMENTS C2000 of company real-time controller) be connected with the described parallel branch the other end by power supply 18.
Whether, in the present embodiment, level indicator 4 is round type bubble level indicator, can observe the device of the present embodiment in horizontality; Lifting support 5 is thread support, and two lifting supports 5 are triangularly arranged with stationary bearing 6, regulate lifting support 5, can guarantee base upper surface level, thereby guarantee that whole device is in horizontality.
Filled rubber layer between mounting groove 2 and translucent cover 1 bottom, prevents gas leakage, and translucent cover 1 can make film forming groove 7 in enclosed space.
Film forming groove 7 bottom planeness values are not more than 0.04mm, and film forming groove 7 base diameters are greater than 5 centimetres, guarantee that the planarization of film forming is good.
The first two-way valve 10 and the second two-way valve 11 can regulate the air flow of translucent cover, control solvent evaporates speed by air flow.
Can manually set the temperature of constant-temperature temperature-control system, control the temperature of air in film forming groove between 0 ℃ to 200 ℃.
Air-bleed system can be by showing and adjustment control adjusting input and output gas amount, and making gas flow scope is 0-1 L/min, and least regulating amount is 0.01 L/mim, and the gas of air-bleed system suction is from the air through drying treatment.
In the present embodiment, the model power of two vacuum fan is identical, and two vacuum fan are worked simultaneously, and two vacuum fan are bled in the other direction.
The working process of the present embodiment device is as follows:
Regulate lifting support, observe round type bubble cell, in the time that bubble is in center in round type bubble cell, stop adjusting this timer level; Open constant-temperature temperature-control system, set temperature parameter; Connect air-bleed system and the first two-way valve, the second two-way valve, set gas flow parameter; Pour appropriate solvent and pore-creating agent into volatilization groove, evaporate into solvent and no longer reduce; The film forming liquid preparing in advance (film forming liquid composition comprises polymkeric substance, solvent and pore-creating agent, and solvent is identical with solvent species in volatilization groove) is quantitatively poured in film forming groove, and closed transparent cover; Open air-bleed system; After for some time, complete film forming, close each instrument, take out institute's film forming.
Claims (10)
1. complete method of evaporation is prepared a device for the symmetrical porous-film of polymkeric substance, comprises base (3), it is characterized in that, described base (3) is provided with translucent cover (1); Base (3) upper surface in described translucent cover (1) offers film forming groove (7); Base (3) upper surface between described film forming groove (7) and described translucent cover (1) bottom is provided with level indicator (4), and base (3) upper surface between described film forming groove (7) and described translucent cover (1) bottom also offers volatilization groove (9); Described translucent cover (1) one upper lateral part offers the air outlet for being communicated with air-bleed system, and translucent cover (1) one side lower part of described air outlet relative position offers the inlet mouth for being communicated with described air-bleed system; Base (3) inside under described film forming groove (7) is fixed with constant-temperature temperature-control system; Described base (3) bottom is provided with the setting device that can regulate described base (3) to be horizontal.
2. complete method of evaporation according to claim 1 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, (10) ports in described air outlet and the first two-way valve are connected, and (11) ports of described inlet mouth and the second two-way valve are connected.
3. complete method of evaporation according to claim 2 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described air-bleed system comprises mount pad (17), on described mount pad (17), offer the air inlet port (19) and the production well (20) that run through described mount pad (17), in described air inlet port (19) and production well (20), a vacuum fan (15) is respectively installed, described air inlet port (19) is connected with another port of described the second two-way valve (11), and described production well (20) is connected with another port of described the first two-way valve (10); On described mount pad (17), be provided with and show and adjustment control (16); The motor parallel composition parallel branch of two vacuum fan (15); Described demonstration and adjustment control (16) are connected with described parallel branch one end; Described demonstration and adjustment control (16) are connected with the described parallel branch the other end by power supply (18).
4. prepare the device of the symmetrical porous-film of polymkeric substance according to the complete method of evaporation one of claim 1～3 Suo Shu, it is characterized in that, described constant-temperature temperature-control system comprises heating power supply (14), resistive heater (12) and temperature control equipment (13), and described heating power supply (14), resistive heater (12) and temperature control equipment (13) are in turn connected to form loop.
5. complete method of evaporation according to claim 4 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described translucent cover (1) top is fixed with handle (8).
6. complete method of evaporation according to claim 5 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described setting device comprises the stationary bearing (6) and two lifting supports (5) that are fixed on described base (3) bottom; Link group triangulation between line and described two lifting supports (5) between described stationary bearing (6) and described two lifting supports (5).
7. complete method of evaporation according to claim 1 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described translucent cover (1) bottom coincide with the mounting groove (2) that is opened in described base (1) upper surface.
8. complete method of evaporation according to claim 7 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described mounting groove (2) is connected by rubber layer with described translucent cover (1) bottom.
9. complete method of evaporation according to claim 6 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described film forming groove (7) cross section is circular.
10. complete method of evaporation according to claim 9 is prepared the device of the symmetrical porous-film of polymkeric substance, it is characterized in that, described film forming groove (7) bottom planeness value is not more than 0.04mm, and described film forming groove (7) bottom round diameter is greater than 5 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861640.2U CN203625279U (en) | 2013-12-25 | 2013-12-25 | Device for preparing polymer symmetric porous membrane by complete evaporation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861640.2U CN203625279U (en) | 2013-12-25 | 2013-12-25 | Device for preparing polymer symmetric porous membrane by complete evaporation method |
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| Publication Number | Publication Date |
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| CN203625279U true CN203625279U (en) | 2014-06-04 |
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| CN201320861640.2U Expired - Fee Related CN203625279U (en) | 2013-12-25 | 2013-12-25 | Device for preparing polymer symmetric porous membrane by complete evaporation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857889A (en) * | 2017-12-08 | 2018-03-30 | 北京金能世纪科技有限公司 | A kind of solution casts big film device and method |
| CN109855935A (en) * | 2019-01-24 | 2019-06-07 | 国电锅炉压力容器检验有限公司 | A kind of metallographic overlay film AC paper producing device |
-
2013
- 2013-12-25 CN CN201320861640.2U patent/CN203625279U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857889A (en) * | 2017-12-08 | 2018-03-30 | 北京金能世纪科技有限公司 | A kind of solution casts big film device and method |
| CN109855935A (en) * | 2019-01-24 | 2019-06-07 | 国电锅炉压力容器检验有限公司 | A kind of metallographic overlay film AC paper producing device |
| CN109855935B (en) * | 2019-01-24 | 2024-03-29 | 国能锅炉压力容器检验有限公司 | Metallographic tectorial membrane AC paper making device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 |