CN117018883B - Manufacturing process of multi-wall carbon nano tube composite ultrafiltration membrane - Google Patents
Manufacturing process of multi-wall carbon nano tube composite ultrafiltration membrane Download PDFInfo
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- CN117018883B CN117018883B CN202311039194.1A CN202311039194A CN117018883B CN 117018883 B CN117018883 B CN 117018883B CN 202311039194 A CN202311039194 A CN 202311039194A CN 117018883 B CN117018883 B CN 117018883B
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- 239000012528 membrane Substances 0.000 title claims abstract description 95
- 239000002131 composite material Substances 0.000 title claims abstract description 92
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 91
- 239000002048 multi walled nanotube Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000005520 cutting process Methods 0.000 claims description 118
- 230000007246 mechanism Effects 0.000 claims description 54
- 238000004140 cleaning Methods 0.000 claims description 37
- 238000004804 winding Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 20
- 229920000742 Cotton Polymers 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 238000007602 hot air drying Methods 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 4
- 229920000515 polycarbonate Polymers 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 239000002041 carbon nanotube Substances 0.000 description 13
- 229910021393 carbon nanotube Inorganic materials 0.000 description 13
- 239000004744 fabric Substances 0.000 description 12
- 238000007731 hot pressing Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 8
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B01D71/02—Inorganic material
- B01D71/021—Carbon
- B01D71/0212—Carbon nanotubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
-
- 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
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- 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
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- 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
- B01D71/50—Polycarbonates
-
- 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
- B01D71/56—Polyamides, e.g. polyester-amides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/02—Means for holding or positioning work with clamping means
- B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
- B26F2001/407—Cutting-out; Stamping-out using a press, e.g. of the ram type stepwise sequential punching processes
Abstract
The invention relates to the technical field of manufacturing of composite ultrafiltration membranes, in particular to a manufacturing process of a multi-wall carbon nano tube composite ultrafiltration membrane, which comprises the following steps of: the manufacturing process of the multi-wall carbon nano tube composite ultrafiltration membrane is adopted, and the manufacturing equipment of the multi-wall carbon nano tube composite ultrafiltration membrane is further specifically related to the manufacturing process of the multi-wall carbon nano tube composite ultrafiltration membrane.
Description
Technical Field
The invention relates to the technical field of manufacturing of composite ultrafiltration membranes, and particularly provides a manufacturing process of a multi-wall carbon nano tube composite ultrafiltration membrane.
Background
The wall carbon nano tube composite ultrafiltration membrane is a membrane formed by combining multi-wall carbon nano tubes with a substrate, and the membrane has the following characteristics: 1. the multi-wall carbon nano tube composite ultrafiltration membrane can control the size and the distribution of nano holes as required, so that the selective interception of pollutants is realized, and the anti-fouling capability is higher; 2. the multi-wall carbon nano tube has high strength and toughness, the multi-wall carbon nano tube is embedded into a polymer matrix to form a composite material film, and the multi-wall carbon nano tube composite ultrafiltration membrane has stronger tensile capacity; 3. the multi-wall carbon nano tube composite ultrafiltration membrane has higher water flux, so that the multi-wall carbon nano tube composite ultrafiltration membrane has wide application potential in the fields of water treatment, biological separation and other separation; 4. the multi-wall carbon nano tube composite ultrafiltration membrane has the unique properties of anti-fouling capability, tensile capability, high mechanical strength, chemical corrosion resistance, thermal stability and the like, so that the multi-wall carbon nano tube composite ultrafiltration membrane has a longer service life; the preparation steps of the wall carbon nano tube composite ultrafiltration membrane generally comprise the following steps: preparing a base material: selecting a base material made of polyamide or polycarbonate as a supporting layer of the film, and preparing a dispersion liquid: the solvent is one or more of water, ethanol, isopropyl alcohol and dimethylformamide- & gt coating film materials: the coating mode is one of blade coating, spraying or rolling coating, and drying treatment is carried out: drying the coated substrate by natural drying or hot air drying and heat treatment of the substrate: carrying out heat treatment operation on the dried base material, and obtaining the multi-wall carbon nano tube composite ultrafiltration membrane after the heat treatment is finished, cutting and shaping: and (3) using cutting shaping equipment to obtain the multi-wall carbon nano tube composite ultrafiltration membrane with the required size and shape.
However, the following problems exist in the process of cutting the wall carbon nano tube composite ultrafiltration membrane at present: 1. in the process of cutting the wall carbon nano tube composite ultrafiltration membrane, due to annular cutting, the traditional wall carbon nano tube composite ultrafiltration membrane which needs to be cut is simply pressed and limited in general, movement in the cutting process is avoided, the limiting mode is easy to enable the cutting knife to directly clamp a cutting gap so as to influence cutting, and meanwhile, the cutting quality of the composite ultrafiltration membrane is also affected to a certain extent.
In order to avoid affecting the cutting effect of the cutting knife in the process of cutting the wall carbon nano tube composite ultrafiltration membrane, the traditional method is generally to detach the cutting knife to clean after the wall carbon nano tube composite ultrafiltration membrane is cut for a period of time, the cutting knife is cleaned in the detaching mode, the cutting efficiency of the wall carbon nano tube composite ultrafiltration membrane can be reduced in the cleaning process, and the cutting quality of the wall carbon nano tube composite ultrafiltration membrane can be affected if the wall carbon nano tube composite ultrafiltration membrane is not replaced timely.
Therefore, in order to avoid the problems of influencing the cutting quality and the cutting efficiency of the wall carbon nano tube composite ultrafiltration membrane in the cutting process, the invention provides a manufacturing process of the multi-wall carbon nano tube composite ultrafiltration membrane.
Disclosure of Invention
Based on the above, it is necessary to provide a manufacturing process of a multi-wall carbon nanotube composite ultrafiltration membrane, which aims to solve the problem that the cutting quality and the cutting efficiency of the wall carbon nanotube composite ultrafiltration membrane in the cutting process are affected in the prior art.
In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: the manufacturing process of the multi-wall carbon nano tube composite ultrafiltration membrane specifically comprises the following steps:
S1, preparing a base material: a substrate of polyamide or polycarbonate is selected as the support layer for the membrane.
S2, preparing a dispersion liquid: uniformly dispersing the granular multi-wall carbon nano tube in a solvent to obtain a multi-wall carbon nano tube dispersion liquid.
S3, coating a film material: uniformly coating the multiwall carbon nanotube dispersion on the surface of a substrate.
S4, drying: and (3) drying the coated base material in a natural drying mode or a hot air drying mode.
S5, heat treatment of a base material: and carrying out heat treatment operation on the dried base material to obtain the multi-wall carbon nano tube composite ultrafiltration membrane.
S6, cutting and shaping: and placing the multi-wall carbon nano tube composite ultrafiltration membrane subjected to heat treatment on a fixing mechanism through a winding mechanism and a winding mechanism, and finally cutting the multi-wall carbon nano tube composite ultrafiltration membrane through a cutting mechanism, thereby obtaining the multi-wall carbon nano tube composite ultrafiltration membrane with the required size and shape.
The process of manufacturing the multi-wall carbon nano tube composite ultrafiltration membrane by adopting the steps S1-S6 also specifically relates to manufacturing equipment of the multi-wall carbon nano tube composite ultrafiltration membrane, and the manufacturing equipment comprises a workbench, wherein a winding mechanism and a winding mechanism are symmetrically arranged on the left side and the right side of the top of the workbench, a fixing mechanism used for placing the composite ultrafiltration membrane is arranged between the winding mechanism and the winding mechanism on the top of the workbench, and a cutting mechanism used for cutting the composite ultrafiltration membrane is arranged on the fixing mechanism.
The fixing mechanism comprises a 匚 plate with a downward opening, which is fixedly arranged at the top of the workbench, a circular through groove is uniformly formed in the top of the horizontal section of the 匚 plate from left to right, a horizontal plate is fixedly arranged under the top of the workbench, which is positioned right below the 匚 plate, through an electric telescopic rod, a fixing rod corresponding to the circular through groove is fixedly arranged at the top of the horizontal plate from left to right, a circular block is fixedly arranged at the top of the fixing rod, the circular block is positioned in the circular through groove and forms a gap, a cleaning assembly is arranged on the fixing rod, and a driving assembly for controlling the cleaning assembly to rotate is arranged on the horizontal plate.
The cutting mechanism comprises a supporting rod fixedly mounted at the top of 匚 plates and close to four corners, a structural plate is fixedly mounted at the top of the supporting rod, cutting assemblies corresponding to the circular through grooves are uniformly arranged at the top of the structural plate from left to right, limiting assemblies for limiting the composite ultrafiltration membrane are arranged on the cutting assemblies, and moving assemblies for controlling the cutting assemblies to cut are arranged at the top of the structural plate.
According to one embodiment of the invention, the cleaning component comprises a circular plate which is rotatably arranged on a fixed rod and is positioned below a circular block, an annular groove is formed in the top of the circular plate, the annular groove corresponds to a gap formed between the circular block and a circular through groove, the cross section of the annular groove is of an inverted cone structure from top to bottom, a plurality of circular through holes which are communicated with the annular groove are uniformly formed in the bottom of the circular plate along the circumferential direction, a placing plate which is of a circular structure is fixedly arranged below the circular plate on the fixed rod, and an annular storage box is arranged at the top of the placing plate.
According to one embodiment of the invention, the driving assembly comprises an extending plate fixedly arranged on the rear end face of the horizontal plate, a first motor is fixedly arranged on the top of the extending plate, chain wheels are fixedly arranged on the circular plate and the output shaft of the first motor, and a plurality of chain wheels are in transmission connection through a chain.
According to one embodiment of the invention, the cutting assembly comprises a circular rod which is arranged on the structural plate in a sliding manner, a fixing column is fixedly arranged at the bottom of the circular rod below the structural plate, a circular groove is formed at the bottom of the fixing column, and a detachable annular cutting knife is arranged below the fixing column.
According to one embodiment of the invention, the limiting component comprises displacement grooves symmetrically arranged at the left and right positions, close to the upper positions, in the circular grooves of the fixing columns, sliding blocks are arranged in the displacement grooves in a sliding mode, fixing plates are fixedly arranged at the middle positions of the two sliding blocks together, the tops of the fixing plates and the upper end faces of the circular grooves are fixedly connected through spring rods, mounting plates with circular structures are fixedly arranged at the bottoms of the fixing plates through electric push rods, ejector rods are fixedly arranged at the center positions of the bottoms of the mounting plates, limiting grooves communicated with the circular grooves are uniformly arranged on the side walls, close to the lower positions, of the fixing columns in the circumferential direction, L-shaped plates fixedly arranged on the side walls of the mounting plates are arranged in the limiting grooves in a sliding mode, vertical sections of the L-shaped plates are located at one end of the outer side walls of the fixing columns, a first pressing plate with an annular structure is fixedly arranged at the bottoms of the ejector rods together, a second pressing plate with the circular structure is fixedly arranged at the bottoms of the first pressing plate and a hot pressing plate is fixedly arranged at the bottoms of the second pressing plate.
According to one embodiment of the invention, the moving assembly comprises a connecting plate fixedly installed at the tops of a plurality of round rods, a plurality of return springs are fixedly installed between the connecting plate and the structural plate and at the positions of the round rods, a vertical plate is fixedly installed at the position, close to the rear side, of the top of the structural plate, an eccentric wheel is fixedly installed on the front end face of the vertical plate through a second motor, and the side wall of the eccentric wheel is in contact with the top of the connecting plate.
According to one embodiment of the invention, the inner end face and the outer end face of the annular groove on the circular plate are both provided with detachable annular plates matched with the annular groove, the opposite faces of the two annular plates are uniformly provided with cleaning brushes along the circumferential direction, the opposite faces of the two annular plates are uniformly provided with cleaning cotton cloth along the circumferential direction, the cleaning cotton cloth and the cleaning brushes are distributed intermittently, and liquid for cooling is sprayed on the cleaning cotton cloth.
The above technical solutions in the embodiments of the present invention have at least one of the following technical effects:
According to the limiting assembly provided by the embodiment of the first aspect of the invention, the composite ultrafiltration membrane which needs to be cut at the inner end and the outer end of the annular cutting knife can be rapidly limited and fixed, so that the problem that the cutting knife directly clamps a cutting gap and further influences cutting caused by traditional simple limiting is avoided, and the cutting quality of the composite ultrafiltration membrane is not influenced to a certain extent.
Furthermore, according to the cleaning component provided by the embodiment of the second aspect of the invention, the cutting knife can be cleaned and cooled while the composite ultrafiltration membrane is cut, the cutting knife does not need to be detached for cleaning, the problem that the cutting efficiency of the wall carbon nano tube composite ultrafiltration membrane is reduced in the cleaning process is avoided, and the problem that the cutting quality of the composite ultrafiltration membrane is not affected in time due to the replacement of the cutting knife is avoided.
Furthermore, according to the hot pressing plates on the first pressing plate and the second pressing plate provided by the embodiment of the third aspect of the invention, the composite ultrafiltration membrane to be cut is fixed in a hot pressing mode, and the cutting performance of materials can be improved through the arranged hot pressing plates, so that plastic parts can be cut more easily, and more accurate and flat cutting edges can be obtained.
Further, according to the cleaning brush provided by the embodiment of the fourth aspect of the invention, the chips on the surface of the annular cutter can be cleaned, the annular cutter can be cooled through the cleaning cotton cloth sprayed with the cooling liquid, the friction resistance and the abrasion can be reduced by reducing the surface temperature of the annular cutter, the abrasion speed of the cutter is slowed down, the cutting efficiency is improved, and the cutting process is smoother and stable.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of the operation of the present invention.
Fig. 2 is a schematic diagram of a first perspective structure (from left to right) of a process for manufacturing a multi-walled carbon nanotube composite ultrafiltration membrane according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a second perspective structure (from back to front) of a process for manufacturing a multi-walled carbon nanotube composite ultrafiltration membrane according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a main cross-sectional plane structure of a manufacturing process of a multi-walled carbon nanotube composite ultrafiltration membrane according to an embodiment of the present invention.
Fig. 5 is a partial enlarged view at M of fig. 4.
Fig. 6 is a partial enlarged view at N of fig. 4.
Fig. 7 is a partial perspective view of a cleaning assembly.
Fig. 8 is a schematic perspective view of a drive assembly.
Icon: 1-a workbench; 2-winding mechanism; 3-a winding mechanism; 4-a fixing mechanism; 41- 匚 plates; 42-horizontal plates; 43-fixing rod; 44-circular blocks; 45-cleaning assembly; 451-circular plate; 471-annular plate; 472-cleaning a hairbrush; 473-cleaning cotton cloth; 452-placing a plate; 453-annular storage box; 46-a drive assembly; 461-projecting plate; 462-sprocket; 463-chain; 5-a cutting mechanism; 51-supporting rods; 52-a structural plate; 53-a cutting assembly; 531-circular bar; 532-fixing columns; 533-annular cutter; 54-a limiting assembly; 541-sliders; 542-fixing plate; 543-spring lever; 544-mounting plate; 545-ejector rod; 546-L-shaped plate; 547-platen number one; 548-a second pressing plate; 55-a moving assembly; 551-connecting plates; 552-a return spring; 553-vertical plates; 554-eccentric.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, a process for manufacturing a multi-wall carbon nanotube composite ultrafiltration membrane specifically includes the following steps:
S1, preparing a base material: a substrate of polyamide or polycarbonate is selected as the support layer for the membrane.
S2, preparing a dispersion liquid: uniformly dispersing the granular multi-wall carbon nano tube in a solvent to obtain a multi-wall carbon nano tube dispersion liquid.
S3, coating a film material: uniformly coating the multiwall carbon nanotube dispersion on the surface of a substrate.
S4, drying: and (3) drying the coated base material in a natural drying mode or a hot air drying mode.
S5, heat treatment of a base material: and carrying out heat treatment operation on the dried base material to obtain the multi-wall carbon nano tube composite ultrafiltration membrane.
S6, cutting and shaping: and placing the multi-wall carbon nano tube composite ultrafiltration membrane subjected to heat treatment on a fixing mechanism 4 through a winding mechanism 2 and a winding mechanism 3, and finally cutting the multi-wall carbon nano tube composite ultrafiltration membrane through a cutting mechanism 5, thereby obtaining the multi-wall carbon nano tube composite ultrafiltration membrane with the required size and shape.
Referring to fig. 2, the process of manufacturing the multi-walled carbon nanotube composite ultrafiltration membrane by adopting the steps S1-S6 further specifically relates to a manufacturing device of the multi-walled carbon nanotube composite ultrafiltration membrane, which comprises a workbench 1, wherein a winding mechanism 2 and a winding mechanism 3 are symmetrically arranged on the left side and the right side of the top of the workbench 1, a fixing mechanism 4 for placing the composite ultrafiltration membrane is arranged between the winding mechanism 2 and the winding mechanism 3 on the top of the workbench 1, and a cutting mechanism 5 for cutting the composite ultrafiltration membrane is arranged on the fixing mechanism 4.
Firstly, the composite ultrafiltration membrane to be cut is intermittently flattened and rolled through the winding mechanism 2 and the winding mechanism 3, so that the flattened composite ultrafiltration membrane is positioned at the top of the horizontal section of the 匚 plate 41, and after flattening, the composite ultrafiltration membrane is rapidly cut through the cutting mechanism 5.
Referring to fig. 2 and 3, the cutting mechanism 5 includes a supporting rod 51 fixedly mounted at the top of the 匚 plate 41 near four corners, a structural plate 52 is fixedly mounted at the top of the supporting rod 51, a cutting assembly 53 corresponding to the circular through groove is uniformly arranged at the top of the structural plate 52 from left to right, a limiting assembly 54 limiting the composite ultrafiltration membrane is arranged on the cutting assembly 53, and a moving assembly 55 controlling the cutting assembly 53 to cut is arranged at the top of the structural plate 52.
After the composite ultrafiltration membrane to be cut is intermittently flattened to the 匚 plate 41 through the winding mechanism 2 and the winding mechanism 3, firstly, the composite ultrafiltration membrane to be cut is simply limited and fixed through the limiting component 54 arranged on the cutting component 53, after the limiting and fixing, the plurality of cutting components 53 are synchronously driven to move downwards through the moving component 55 arranged, the composite ultrafiltration membrane after the limiting is rapidly and annularly cut, the composite ultrafiltration membrane to be cut can be limited firstly and then is cut through the limiting component 54 arranged, the problem that the cutting quality of the composite ultrafiltration membrane is influenced when the cutting knife is difficult to cut due to the fact that the cutting knife is easy to clamp caused by the traditional direct cutting is solved, after the cutting is completed, the composite ultrafiltration membrane after the cutting is fed, the composite ultrafiltration membrane is intermittently transported through the winding mechanism 2 and the winding mechanism 3 arranged while the cutting is fed, and after the transport is repeated.
Referring to fig. 4, the cutting assembly 53 includes a circular rod 531 slidably disposed on the structural board 52, a fixing column 532 is fixedly mounted below the structural board 52 at the bottom of the circular rod 531, a circular groove is formed at the bottom of the fixing column 532, and a detachable annular cutting knife 533 is mounted below the fixing column 532.
Referring to fig. 4 and 6, the limiting component 54 includes a displacement slot symmetrically disposed in a circular groove of the fixing column 532 near the upper position, sliding blocks 541 are disposed in the displacement slot, a fixing plate 542 is fixedly mounted at the middle positions of the two sliding blocks 541, the top of the fixing plate 542 and the upper end surface of the circular groove are fixedly connected through a spring rod 543, a mounting plate 544 with a circular structure is fixedly mounted at the bottom of the fixing plate 542 through an electric push rod, a push rod 545 is fixedly mounted at the center of the bottom of the mounting plate 544, a limiting slot communicated with the circular groove is uniformly disposed on the side wall of the fixing column 532 near the lower side along the circumferential direction, L-shaped plates 546 fixedly mounted on the side wall of the mounting plate 544 are disposed in the limiting slot in a sliding manner, vertical sections of the L-shaped plates 546 are located at one ends of the outer side walls of the fixing column 532, a first pressing plate 547 with a circular structure is fixedly mounted at the bottom of the push rod 545, and a second pressing plate 548 with a circular structure is fixedly mounted at the bottom of the first pressing plate 547 and a hot pressing plate 548.
After flattening 匚 shaped plate 41 to the compound milipore filter that needs to cut through winding mechanism 2 and winding mechanism 3 that set up, start electric putter, electric putter promotes mounting panel 544 downwardly moving, the mounting panel 544 makes ejector pin 545 drive No. two clamp plates 548 when downwardly moving, can also make a plurality of L shaped plates 546 drive No. one clamp plates 547 simultaneously and downwardly moving, and then make the hot pressboard of No. one clamp plates 547 and No. two clamp plates 548 bottom, it is fixed to carry out hot pressing to the compound milipore filter that needs to cut to the inside and outside end of annular cutting knife 533, cutting performance through the hot pressboard that sets up, and then make the working of plastics cut more easily, and can obtain more accurate and smooth cutting edge, after carrying out hot pressing fixation to the compound milipore filter that needs to cut to the inside and outside end of annular cutting knife 533, simultaneously drive a plurality of fixed columns 532 downwardly moving through the moving component 55 that sets up, and then make a plurality of fixed columns 532 drive annular cutting knife 533 and carry out annular cutting to the compound milipore filter, in the course that fixed column 532 drives annular cutting knife 533 downwardly moving, through the slider that slides to set up in the displacement groove, make the extrusion spring 541, and then can not extrude the fixed column 541 to the compound milipore filter.
Referring to fig. 3 and 4, the moving assembly 55 includes a connection plate 551 fixedly installed at the top of the plurality of circular rods 531, a plurality of return springs 552 are fixedly installed between the connection plate 551 and the structural plate 52 and at the positions of the circular rods 531, a vertical plate 553 is fixedly installed at the top of the structural plate 52 near the rear side, an eccentric wheel 554 is fixedly installed on the front end surface of the vertical plate 553 through a second motor, and the side wall of the eccentric wheel 554 contacts with the top of the connection plate 551.
After the composite ultrafiltration membrane which needs to be cut at the inner end and the outer end of the annular cutting knife 533 is fixed in a hot pressing mode through the first pressing plate 547 and the second pressing plate 548, the second motor is started, the second motor drives the eccentric wheel 554 to rotate, when the center of the eccentric wheel 554 is located below an output shaft of the second motor, the connecting plate 551 drives the plurality of circular rods 531 to move downwards simultaneously, and then the circular rods 531 drive the annular cutting knife 533 below the fixed column 532 to conduct annular cutting on the composite ultrafiltration membrane.
Referring to fig. 4, the fixing mechanism 4 includes a 匚 plate 41 with a downward opening fixedly mounted at the top of the working table 1, a circular through slot is uniformly formed at the top of the horizontal section of the 匚 plate 41 from left to right, a horizontal plate 42 is fixedly mounted under the 匚 plate 41 by an electric telescopic rod at the top of the working table 1, a fixing rod 43 corresponding to the circular through slot is fixedly mounted at the top of the horizontal plate 42 from left to right, a circular block 44 is fixedly mounted at the top of the fixing rod 43, the circular block 44 is positioned in the circular through slot and forms a gap, a cleaning assembly 45 is arranged on the fixing rod 43, and a driving assembly 46 for controlling the cleaning assembly 45 to rotate is arranged on the horizontal plate 42.
Through the circular block 44 that sets up in circular logical inslot, can support the compound milipore filter that needs the cutting, when the fixed column 532 drove annular cutting knife 533 to compound milipore filter cutting, make annular cutting knife 533 pass circular block 44 and circular logical inslot slit downwardly moving that forms, and then make annular cutting knife 533 move down to on the clearance subassembly 45, make clearance subassembly 45 clear up annular cutting knife 533 simultaneously through the drive assembly 46 that sets up, avoid having the piece adhesion to further influence the cutting quality of multi-wall carbon nanotube compound milipore filter on annular cutting knife 533.
Referring to fig. 4, 5 and 7, the cleaning assembly 45 includes a circular plate 451 rotatably mounted on a fixing rod 43 and located below the circular block 44, an annular groove is formed at the top of the circular plate 451, the annular groove corresponds to a gap formed between the circular block 44 and the circular through groove, the cross section of the annular groove is in an inverted cone structure from top to bottom, a plurality of circular through holes communicated with the annular groove are uniformly formed at the bottom of the circular plate 451 along the circumferential direction, a placing plate 452 in a circular structure is fixedly mounted below the circular plate 451 on the fixing rod 43, and an annular containing box 453 is arranged at the top of the placing plate 452.
Referring to fig. 4 and 5, the annular grooves on the circular plate 451 are provided with annular plates 471 which are detachably matched with the annular grooves, cleaning brushes 472 are uniformly arranged on opposite faces of the two annular plates 471 along the circumferential direction, cleaning cotton cloth 473 is uniformly arranged on opposite faces of the two annular plates 471 along the circumferential direction, the cleaning cotton cloth 473 and the cleaning brushes 472 are intermittently distributed, and liquid for cooling is sprayed on the cleaning cotton cloth 473.
When the annular cutting knife 533 passes through the circular block 44 and the slit formed by the circular through groove and moves downwards, the annular cutting knife 533 moves into the annular groove on the circular plate 451, after moving into the annular groove, the driving assembly 46 is utilized to drive the plurality of circular plates 451 to simultaneously rotate, and then the annular plate 471 in the annular groove drives the cleaning hairbrush 472 to rotate with the cleaning cotton cloth 473, the cleaning hairbrush 472 arranged can clean the chips on the surface of the annular cutting knife 533, the cleaning cotton cloth 473 sprayed with cooling liquid can cool the annular cutting knife 533, the surface temperature of the annular cutting knife 533 is reduced, friction resistance and abrasion are reduced, the abrasion speed of the cutter is slowed down, and then the cutting efficiency is improved, the cutting process is smoother and stable, through the circular through holes formed in the bottom of the circular plate 451, the cleaned chips can fall down through the circular through holes, and then fall into the annular containing boxes 453 arranged on the placing plate 452, the chips can be collected through the annular containing boxes 453 arranged to clean the chips, the chips can be directly and the working environment is poor after the chips can be cleaned, and the dirty and the chips can be directly cleaned.
Referring to fig. 8, the driving assembly 46 includes an extension plate 461 fixedly mounted on a rear end surface of the horizontal plate 42, a first motor is fixedly mounted on a top of the extension plate 461, sprockets 462 are fixedly mounted on the circular plate 451 and an output shaft of the first motor, and a plurality of sprockets 462 are in transmission connection through a chain 463.
After the annular cutter 533 moves to the annular groove on the circular plate 451, the first motor is started, so that the sprocket 462 on the first motor is driven to rotate, at the moment, under the action of the chain 463, the sprockets 462 on the plurality of circular plates 451 are simultaneously driven to rotate, and then the circular plate 451 is driven to rotate, so that the cleaning hairbrush 472 and the cleaning cotton cloth 473 in the annular groove on the circular plate 451 clean the scraps on the surface of the annular cutter 533, the scraps are prevented from adhering to the annular cutter 533, the cutting quality of the multi-wall carbon nano tube composite ultrafiltration membrane is further influenced, and when the cleaning cotton cloth 473 and the cleaning hairbrush 472 on the annular groove are required to be replaced, the electric telescopic rod is started to move downwards.
The concrete work is as follows:
Firstly, the composite ultrafiltration membrane to be cut is intermittently flattened to the 匚 plate 41 by the winding mechanism 2 and the winding mechanism 3, and then the electric push rod is started to push the mounting plate 544 to move downwards, so that the mounting plate 544 can drive the second pressing plate 548 to move downwards, and simultaneously the plurality of L-shaped plates 546 can drive the first pressing plate 547 to move downwards, so that the first pressing plate 547 and the hot pressing plate at the bottom of the second pressing plate 548 can carry out hot pressing fixation on the composite ultrafiltration membrane to be cut at the inner end and the outer end of the annular cutting knife 533.
And in the second step, the second motor is started, the second motor drives the eccentric wheel 554 to rotate, when the center of the eccentric wheel 554 is positioned below the output shaft of the second motor, the connecting plate 551 drives the circular rods 531 to move downwards simultaneously, and then the circular rods 531 drive the annular cutting knife 533 below the fixed column 532 to conduct annular cutting on the composite ultrafiltration membrane, in the cutting process, the annular cutting knife 533 passes through a gap formed by the circular block 44 and the circular through groove to move downwards, and the annular cutting knife 533 moves into an annular groove on the circular plate 451.
Third step, start motor No. one last for drive sprocket 462 on the motor No. one and rotate, at this moment under the effect of chain 463, make sprocket 462 on a plurality of circular plates 451 rotate simultaneously, and then drive circular plate 451 and rotate, make clearance brush 472 and clearance cotton 473 in the ring channel on the circular plate 451 clear up the piece on the annular cutting knife 533 surface, avoid having the piece adhesion on annular cutting knife 533 and then influence the cutting quality of multi-wall carbon nanotube composite ultrafiltration membrane.
In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not limited in scope by the present invention, so that all equivalent changes according to the structure, shape and principle of the present invention are covered in the scope of the present invention.
Claims (3)
1. A manufacturing process of a multi-wall carbon nano tube composite ultrafiltration membrane is characterized in that: the manufacturing process of the multi-wall carbon nano tube composite ultrafiltration membrane specifically comprises the following steps:
s1, preparing a base material: selecting a base material made of polyamide or polycarbonate as a supporting layer of the film;
S2, preparing a dispersion liquid: uniformly dispersing the granular multi-wall carbon nano tube in a solvent to obtain multi-wall carbon nano tube dispersion liquid;
S3, coating a film material: uniformly coating the multiwall carbon nanotube dispersion liquid on the surface of a substrate;
S4, drying: drying the coated substrate in a natural drying or hot air drying mode;
S5, heat treatment of a base material: carrying out heat treatment operation on the dried base material to obtain a multi-wall carbon nano tube composite ultrafiltration membrane;
S6, cutting and shaping: placing the multi-wall carbon nano tube composite ultrafiltration membrane after heat treatment on a fixing mechanism (4) through a winding mechanism (2) and a winding mechanism (3), and finally cutting the multi-wall carbon nano tube composite ultrafiltration membrane through a cutting mechanism (5) so as to obtain the multi-wall carbon nano tube composite ultrafiltration membrane with the required size and shape;
The process of manufacturing the multi-wall carbon nano tube composite ultrafiltration membrane by adopting the steps S1-S6 also specifically relates to manufacturing equipment of the multi-wall carbon nano tube composite ultrafiltration membrane, and the manufacturing equipment comprises a workbench (1), wherein a winding mechanism (2) and a winding mechanism (3) are symmetrically arranged on the left side and the right side of the top of the workbench (1), a fixing mechanism (4) for placing the composite ultrafiltration membrane is arranged between the winding mechanism (2) and the winding mechanism (3) at the top of the workbench (1), and a cutting mechanism (5) for cutting the composite ultrafiltration membrane is arranged on the fixing mechanism (4);
The fixing mechanism (4) comprises a 匚 -shaped plate (41) with a downward opening, which is fixedly arranged at the top of the workbench (1), a circular through groove is uniformly formed in the top of the horizontal section of the 匚 -shaped plate (41) from left to right, a horizontal plate (42) is fixedly arranged under the 匚 -shaped plate (41) through an electric telescopic rod, a fixing rod (43) corresponding to the circular through groove is fixedly arranged at the top of the horizontal plate (42) from left to right, a circular block (44) is fixedly arranged at the top of the fixing rod (43), the circular block (44) is positioned in the circular through groove and forms a gap, a cleaning assembly (45) is arranged on the fixing rod (43), and a driving assembly (46) for controlling the cleaning assembly (45) to rotate is arranged on the horizontal plate (42);
The cutting mechanism (5) comprises a supporting rod (51) fixedly installed at the top of a 匚 -shaped plate (41) and close to four corners, a structural plate (52) is fixedly installed at the top of the supporting rod (51), a cutting assembly (53) corresponding to a circular through groove is uniformly arranged at the top of the structural plate (52) from left to right, a limiting assembly (54) for limiting the composite ultrafiltration membrane is arranged on the cutting assembly (53), and a moving assembly (55) for controlling the cutting assembly (53) to move downwards for cutting is arranged at the top of the structural plate (52);
The cutting assembly (53) comprises a circular rod (531) which is arranged on the structural plate (52) in a sliding manner, a fixed column (532) is fixedly arranged at the bottom of the circular rod (531) below the structural plate (52), a circular groove is formed in the bottom of the fixed column (532), and a detachable annular cutting knife (533) is arranged below the fixed column (532);
Limiting component (54) are including the displacement groove of being close to the position bilateral symmetry of top and offering in the circular recess of fixed column (532), all slide in the displacement groove and be provided with slider (541), the common fixed mounting of intermediate position of two sliders (541) has fixed plate (542), the top of fixed plate (542) and the up end of circular recess pass through spring beam (543) fixed connection, the bottom of fixed plate (542) is through electric putter fixed mounting has mounting panel (544) that are circular structure, the bottom central point of mounting panel (544) puts fixed mounting and has ejector pin (545), the lateral wall that fixed column (532) is close to the below evenly offered along circumference and the spacing groove that is linked together with circular recess, all slide in the spacing groove be provided with lateral wall fixed mounting's of mounting panel (544) L shaped plate (546), the vertical section of a plurality of L shaped plates (546) just is located the one end of fixed column (532) lateral wall, the fixed mounting has first clamp plate (547) that are annular structure jointly, the bottom fixed mounting of ejector pin (545) has No. two clamp plates (548) that are circular structure, bottom fixed mounting of first clamp plate (547) and No. two clamp plate (548) is fixed mounting.
2. The process for manufacturing the multi-wall carbon nano tube composite ultrafiltration membrane according to claim 1, wherein the process is characterized in that: the cleaning assembly (45) comprises a circular plate (451) which is rotatably arranged on a fixed rod (43) and is positioned below a circular block (44), an annular groove is formed in the top of the circular plate (451), the annular groove corresponds to a gap formed between the circular block (44) and a circular through groove, the cross section of the annular groove is of an inverted cone-shaped structure from top to bottom, a plurality of circular through holes which are communicated with the annular groove are uniformly formed in the bottom of the circular plate (451) along the circumferential direction, a placing plate (452) which is of a circular structure is fixedly arranged below the circular plate (451) on the fixed rod (43), and an annular containing box (453) is arranged at the top of the placing plate (452);
The driving assembly (46) comprises an extending plate (461) fixedly arranged on the rear end face of the horizontal plate (42), a first motor is fixedly arranged at the top of the extending plate (461), chain wheels (462) are fixedly arranged on the circular plate (451) and the output shaft of the first motor, and a plurality of chain wheels (462) are in transmission connection through a chain (463);
annular plate (451) are gone up the inside and outside terminal surface of ring channel and all are provided with detachable and ring channel matched with annular plate (471), and the opposite face of two annular plates (471) evenly is provided with clearance brush (472) along circumference, and the opposite face of two annular plates (471) evenly is provided with clearance cotton (473) along circumference, and clearance cotton (473) are intermittent type with clearance brush (472) and distribute, spray on clearance cotton (473) the liquid that is used for the cooling.
3. The process for manufacturing the multi-wall carbon nano tube composite ultrafiltration membrane according to claim 1, wherein the process is characterized in that: the movable assembly (55) comprises a connecting plate (551) fixedly installed at the tops of a plurality of round rods (531), a plurality of return springs (552) are fixedly installed between the connecting plate (551) and the structural plate (52) and located at the positions of the round rods (531), a vertical plate (553) is fixedly installed at the position, close to the rear side, of the top of the structural plate (52), an eccentric wheel (554) is fixedly installed on the front end face of the vertical plate (553) through a second motor, and the side wall of the eccentric wheel (554) is in contact with the top of the connecting plate (551).
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| CN117018883A (en) | 2023-11-10 |
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