CN116571501A - Preparation and cleaning integrated device for high-molecular flexible polymer microtube - Google Patents
Preparation and cleaning integrated device for high-molecular flexible polymer microtube Download PDFInfo
- Publication number
- CN116571501A CN116571501A CN202310385203.6A CN202310385203A CN116571501A CN 116571501 A CN116571501 A CN 116571501A CN 202310385203 A CN202310385203 A CN 202310385203A CN 116571501 A CN116571501 A CN 116571501A
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- Prior art keywords
- curing
- cleaning
- plugboard
- module
- groove
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- 238000004140 cleaning Methods 0.000 title claims abstract description 52
- 229920005570 flexible polymer Polymers 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 229920000642 polymer Polymers 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000012459 cleaning agent Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 102000029749 Microtubule Human genes 0.000 description 3
- 108091022875 Microtubule Proteins 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 210000004688 microtubule Anatomy 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- -1 polydimethylsiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002174 soft lithography Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a preparation and cleaning integrated device of a high-molecular flexible polymer microtube, which comprises a substrate, a curing module, a fixed bracket, a cleaning module, a moving module and a control module; the curing module comprises N curing units, wherein each curing unit comprises a curing groove, a curing cover and M metal wires; the cleaning module comprises a cleaning groove and a vibration generator; the mobile module includes a vertical mobile unit and a horizontal mobile unit. The invention can process thermosetting high-elastic polymer materials, can increase the number of micro-pipes formed at one time by using a multi-channel parallel connection mode, greatly improves the manufacturing efficiency of flexible polymer micro-pipes, and solves the problems that the existing polymer micro-pipes are low in manufacturing efficiency, the axial movement tension of metal wires is not easy to control, the metal wires are possibly broken when being in contact with air oxidation, and the like.
Description
Technical Field
The invention relates to a high-molecular flexible polymer, in particular to a preparation and cleaning integrated device of a high-molecular flexible polymer microtube.
Background
The fabrication of microfluidic devices often involves soft lithography techniques, which are expensive, complex to operate, require high requirements, increase costs, and greatly limit their throughput. In addition, extrusion molding is often used for conventional flexible polymer microtubes. The development bottleneck of the technology is formed by a series of problems such as slower curing speed of the thermosetting high-elastic polymer.
In patent CN109071942a, a manufacturing apparatus and method of a polymer microtube capable of precisely controlling the inner diameter are proposed. However, the method has a slow wire drawing speed from the solution, which limits the manufacturing efficiency; in the course of repeated manufacture, each liquid tank needs to be cleaned or replaced, but due to the complex structure and the complex path of the wire passing through the tank, the preparation or subsequent treatment needs a long time; in addition, the method adopts a mode of externally adding an electrode, namely, partial metal is exposed in the air for heating, so that the metal wire is easy to oxidize, and the method relies on a motor to control the tension of the metal wire, so that the breakage of the metal wire is likely to be caused.
In patent CN112192796a, a manufacturing apparatus and method of a polymer microtube capable of precisely controlling the outer diameter and the inner diameter are proposed. However, the method has certain disadvantages besides solving the efficiency problem and the effective control problem of the tension. In the method, a through hole is arranged on a lower sealing plate of a liquid container, so that the possibility of liquid leakage exists; part of the metal is exposed to air for heating, so that the metal wire is easy to oxidize, and the metal wire can be broken due to improper tension setting; in the device, the microtubes are firstly peeled off, and then the inside of the microtubes is further solidified, so that the uniformity of the inner surface of the microtubes can be influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation and cleaning integrated device of a high-molecular flexible polymer microtube aiming at the defects related to the background technology.
The invention adopts the following technical scheme for solving the technical problems:
an integrated device for preparing and cleaning a high-molecular flexible polymer microtube comprises a substrate, a curing module, a fixed bracket, a cleaning module, a moving module and a control module;
the curing module comprises N curing units, wherein N is a natural number greater than or equal to 1;
the curing unit comprises a curing groove, a curing cover and M metal wires, wherein M is a natural number which is more than or equal to 1;
the curing tank is a hollow cuboid with an opening at the upper end and is used for containing a liquid polymer to be cured, and comprises a bottom plate, a first side plate, a first end plate, a second side plate and a second end plate which are vertically and fixedly connected end to end in sequence; a first electrode is arranged on the inner wall of the first end plate, and a second electrode is arranged on the inner wall of the second end plate; the first electrode and the second electrode are respectively connected with the positive electrode and the negative electrode of an external power supply;
the two ends of the curing cover are respectively provided with a first plugboard and a second plugboard; the upper ends of the first plugboard and the second plugboard are vertically and fixedly connected with the lower end face of the curing cover, and the lower ends of the first plugboard and the second plugboard are respectively provided with a first contact and a second contact; m fixing heads are arranged on the first plugboard and the second plugboard, the M fixing heads on the first plugboard are electrically connected with the first contact, and the M fixing heads on the second plugboard are electrically connected with the second contact; the M metal wires are arranged in parallel at equal intervals, one end of each metal wire is detachably and fixedly connected with the M fixing heads on the first plugboard in a one-to-one correspondence manner, and the other end of each metal wire is detachably and fixedly connected with the M fixing heads on the second plugboard in a one-to-one correspondence manner;
the curing cover is used for being matched with the curing groove to form a closed hollow cuboid, when the curing cover is covered on the curing groove, the first contact is electrically connected with the first electrode, the second contact is electrically connected with the second electrode, and M metal wires are immersed into liquid polymers in the curing groove;
the curing grooves of the N curing units are equidistantly and parallelly arranged on the substrate, and the bottom plates of the curing grooves are fixedly connected with the substrate;
the cleaning module comprises a cleaning groove and a vibration generator, wherein the cleaning groove is a hollow cuboid with an opening at the upper end, and the lower end of the cleaning groove is fixed on the substrate and is used for containing cleaning agent; the vibration generator is arranged in the cleaning tank and is used for vibrating the cleaning agent, cleaning uncured prepolymer on the metal wires of each curing cover in the cleaning tank, expanding the cured polymer on the metal wires of each curing cover and facilitating stripping;
the mobile module comprises a vertical mobile unit and a horizontal mobile unit;
the vertical moving unit is arranged on the substrate and used for driving the horizontal moving unit to move in the vertical direction;
the fixing brackets are fixed on the horizontal moving units, and the curing covers of the N curing units are arranged in parallel at equal intervals, and the upper end surfaces of the curing covers are fixedly connected with the fixing brackets; the horizontal moving unit is used for driving the fixed support and further driving the curing covers of the N curing units to move in the horizontal direction, so that the curing covers of the N curing units are positioned right above the cleaning groove or right above the curing grooves of the N curing units in one-to-one correspondence;
the control module is electrically connected with the vibration generator and the mobile module respectively and is used for controlling the vibration generator and the mobile module to work.
As a further optimization scheme of the preparation and cleaning integrated device for the high-molecular flexible polymer microtubes, dovetail grooves are formed in the inner walls of the first end plate and the second end plate of the curing groove, and cutting bars which are used for being matched with the dovetail grooves in the inner walls of the first end plate and the second end plate are respectively arranged on the outer walls of the first inserting plate and the second inserting plate.
As a further optimization scheme of the preparation and cleaning integrated device of the high-molecular flexible polymer microtube, a heating unit is further arranged on the outer wall of the curing tank and used for heating the liquid polymer in the curing tank to increase viscosity and reduce dripping during movement.
As a further optimization scheme of the preparation and cleaning integrated device of the high-molecular flexible polymer microtube, a temperature sensor for measuring the temperature of the liquid polymer is arranged in the curing tank.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
1. the method can process the thermosetting high-elastic polymer material, can use a multi-channel parallel connection mode to improve the number of the micro-pipes formed at one time, and greatly improves the manufacturing efficiency of the flexible polymer micro-pipes;
2. the metal wire is ensured to be heated after being isolated from air in the liquid, so that the oxidation of the high-temperature metal wire in the air is avoided;
3. residual liquid is cleaned in a high-frequency vibration mode, so that the cleaning efficiency of uncured raw materials which are difficult to clean is effectively improved;
4. the device is manufactured horizontally, so that the possibility of leakage of liquid from the vertical through hole is avoided, and the clamping device is arranged in the curing pool together, but performs high-frequency treatment along with the finished product, so that the liquid is prevented from being cured on the clamping device, and the cleaning work after the test is reduced;
5. solves the problems that the prior polymer microtubule has lower manufacturing efficiency, the axial movement tension of the metal wire is not easy to control, the metal wire is possibly broken when being contacted with air for oxidation, and the like.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
In the figure, 1-base plate, 2-curing tank, 3-curing plate, 4-fixed support, 5-cleaning tank, 6-vibration generator, 7-vertical moving unit, 8-horizontal moving unit, 9-control module, 10-heating unit.
Description of the embodiments
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings:
this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the components are exaggerated for clarity.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components and/or sections, these elements, components and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, and/or section from another. Accordingly, a first element, component, and/or section discussed below could be termed a second element, component, or section without departing from the teachings of the present invention.
As shown in fig. 1, the invention discloses a preparation and cleaning integrated device of a high-molecular flexible polymer microtube, which comprises a substrate, a curing module, a fixed bracket, a cleaning module, a moving module and a control module;
the curing module comprises N curing units, wherein N is a natural number greater than or equal to 1;
the curing unit comprises a curing groove, a curing cover and M metal wires, wherein M is a natural number which is more than or equal to 1;
the curing tank is a hollow cuboid with an opening at the upper end and is used for containing a liquid polymer to be cured, and comprises a bottom plate, a first side plate, a first end plate, a second side plate and a second end plate which are vertically and fixedly connected end to end in sequence; a first electrode is arranged on the inner wall of the first end plate, and a second electrode is arranged on the inner wall of the second end plate; the first electrode and the second electrode are respectively connected with the positive electrode and the negative electrode of an external power supply;
the two ends of the curing cover are respectively provided with a first plugboard and a second plugboard; the upper ends of the first plugboard and the second plugboard are vertically and fixedly connected with the lower end face of the curing cover, and the lower ends of the first plugboard and the second plugboard are respectively provided with a first contact and a second contact; m fixing heads are arranged on the first plugboard and the second plugboard, the M fixing heads on the first plugboard are electrically connected with the first contact, and the M fixing heads on the second plugboard are electrically connected with the second contact; the M metal wires are arranged in parallel at equal intervals, one end of each metal wire is detachably and fixedly connected with the M fixing heads on the first plugboard in a one-to-one correspondence manner, and the other end of each metal wire is detachably and fixedly connected with the M fixing heads on the second plugboard in a one-to-one correspondence manner;
the curing cover is used for being matched with the curing groove to form a closed hollow cuboid, when the curing cover is covered on the curing groove, the first contact is electrically connected with the first electrode, the second contact is electrically connected with the second electrode, and M metal wires are immersed into liquid polymers in the curing groove;
the curing grooves of the N curing units are equidistantly and parallelly arranged on the substrate, and the bottom plates of the curing grooves are fixedly connected with the substrate;
the cleaning module comprises a cleaning groove and a vibration generator, wherein the cleaning groove is a hollow cuboid with an opening at the upper end, and the lower end of the cleaning groove is fixed on the substrate and is used for containing cleaning agent; the vibration generator is arranged in the cleaning tank and is used for vibrating the cleaning agent, cleaning uncured prepolymer on the metal wires of each curing cover in the cleaning tank, expanding the cured polymer on the metal wires of each curing cover and facilitating stripping;
the mobile module comprises a vertical mobile unit and a horizontal mobile unit;
the vertical moving unit is arranged on the substrate and used for driving the horizontal moving unit to move in the vertical direction;
the fixing brackets are fixed on the horizontal moving units, and the curing covers of the N curing units are arranged in parallel at equal intervals, and the upper end surfaces of the curing covers are fixedly connected with the fixing brackets; the horizontal moving unit is used for driving the fixed support and further driving the curing covers of the N curing units to move in the horizontal direction, so that the curing covers of the N curing units are positioned right above the cleaning groove or right above the curing grooves of the N curing units in one-to-one correspondence;
the control module is electrically connected with the vibration generator and the mobile module respectively and is used for controlling the vibration generator and the mobile module to work.
And dovetail grooves are formed in the inner walls of the first end plate and the second end plate of the curing groove, and cutting bars matched with the dovetail grooves in the inner walls of the first end plate and the second end plate are respectively arranged on the outer walls of the first inserting plate and the second inserting plate.
And the outer wall of the curing tank is also provided with a heating unit for heating the liquid polymer in the curing tank to increase the viscosity and reduce dripping during movement. The heating unit may preferably employ a water bath pipe.
And a temperature sensor for measuring the temperature of the liquid polymer is arranged in the curing tank.
The operation method of the invention is as follows:
step 1), preparing a polymer, vacuumizing to remove bubbles in the polymer, pouring the polymer into each curing tank, and injecting a cleaning agent into the cleaning tank;
step 2), heating the liquid polymer in each curing tank through each heating unit to enable the liquid polymer to reach a preset temperature threshold;
step 3), controlling the mobile module to work so that the curing covers of the N curing units cover the curing tanks of the N curing units in a one-to-one correspondence manner, and at the moment, the M metal wires on each curing cover are immersed in the liquid polymer in the corresponding curing tank and are electrified;
step 4), after the energizing time of the metal wire is met, controlling the moving module to work, so that the curing covers of the N curing units move into the cleaning groove;
step 5), starting a vibration generator, and stopping after vibrating for a period of time;
step 6), closing the vibration generator, and controlling the moving module to work so that the curing covers of the N curing units are separated from the cleaning groove;
step 7), detaching M metal wires on each curing cover to obtain N.M metal wires with a layer of polymer;
step 8), removing the lengths of about 2cm at the two ends of the polymer on the metal wire respectively, namely removing irregular parts, and reserving a metal wire covering layer for uniformly covering the parts;
step 9) the metal wire is drawn out, and the polymer thin layer on the metal wire is influenced by the cleaning agent, so that the metal wire is easy to draw out due to a certain expansion of the size.
The metal wire can use 100um copper wire; the polymer can use PDMS (polydimethylsiloxane), the proportion can be 10:1, the PDMS temperature is 20 ℃, the electrifying current is 0.8-1.2A, and the electrifying duration is determined by the current and the required outer diameter.
Compared with the prior art, the invention controls the temperature of the polymer in the polymer curing tank through the water bath, and further controls the outer diameter of the microtube; the efficiency is improved through the structural design, and the influence of multiple metal wires is avoided; the high-frequency vibration cleaning device has the capability of simultaneously processing a plurality of metal wires and efficiently cleaning residual polymers; control and operation in the microtubule manufacturing process are optimized, the operation difficulty is greatly reduced, and the production efficiency of the microtubule is improved.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (4)
1. The preparation and cleaning integrated device for the high-molecular flexible polymer microtubes is characterized by comprising a substrate, a curing module, a fixed bracket, a cleaning module, a moving module and a control module;
the curing module comprises N curing units, wherein N is a natural number greater than or equal to 1;
the curing unit comprises a curing groove, a curing cover and M metal wires, wherein M is a natural number which is more than or equal to 1;
the curing tank is a hollow cuboid with an opening at the upper end and is used for containing a liquid polymer to be cured, and comprises a bottom plate, a first side plate, a first end plate, a second side plate and a second end plate which are vertically and fixedly connected end to end in sequence; a first electrode is arranged on the inner wall of the first end plate, and a second electrode is arranged on the inner wall of the second end plate; the first electrode and the second electrode are respectively connected with the positive electrode and the negative electrode of an external power supply;
the two ends of the curing cover are respectively provided with a first plugboard and a second plugboard; the upper ends of the first plugboard and the second plugboard are vertically and fixedly connected with the lower end face of the curing cover, and the lower ends of the first plugboard and the second plugboard are respectively provided with a first contact and a second contact; m fixing heads are arranged on the first plugboard and the second plugboard, the M fixing heads on the first plugboard are electrically connected with the first contact, and the M fixing heads on the second plugboard are electrically connected with the second contact; the M metal wires are arranged in parallel at equal intervals, one end of each metal wire is detachably and fixedly connected with the M fixing heads on the first plugboard in a one-to-one correspondence manner, and the other end of each metal wire is detachably and fixedly connected with the M fixing heads on the second plugboard in a one-to-one correspondence manner;
the curing cover is used for being matched with the curing groove to form a closed hollow cuboid, when the curing cover is covered on the curing groove, the first contact is electrically connected with the first electrode, the second contact is electrically connected with the second electrode, and M metal wires are immersed into liquid polymers in the curing groove;
the curing grooves of the N curing units are equidistantly and parallelly arranged on the substrate, and the bottom plates of the curing grooves are fixedly connected with the substrate;
the cleaning module comprises a cleaning groove and a vibration generator, wherein the cleaning groove is a hollow cuboid with an opening at the upper end, and the lower end of the cleaning groove is fixed on the substrate and is used for containing cleaning agent; the vibration generator is arranged in the cleaning tank and is used for vibrating the cleaning agent, cleaning uncured prepolymer on the metal wires of each curing cover in the cleaning tank, expanding the cured polymer on the metal wires of each curing cover and facilitating stripping;
the mobile module comprises a vertical mobile unit and a horizontal mobile unit;
the vertical moving unit is arranged on the substrate and used for driving the horizontal moving unit to move in the vertical direction;
the fixing brackets are fixed on the horizontal moving units, and the curing covers of the N curing units are arranged in parallel at equal intervals, and the upper end surfaces of the curing covers are fixedly connected with the fixing brackets; the horizontal moving unit is used for driving the fixed support and further driving the curing covers of the N curing units to move in the horizontal direction, so that the curing covers of the N curing units are positioned right above the cleaning groove or right above the curing grooves of the N curing units in one-to-one correspondence;
the control module is electrically connected with the vibration generator and the mobile module respectively and is used for controlling the vibration generator and the mobile module to work.
2. The integrated device for preparing and cleaning the high-molecular flexible polymer microtubes according to claim 1, wherein dovetail grooves are respectively arranged on the inner walls of the first end plate and the second end plate of the curing groove, and cutting bars which are used for being matched with the dovetail grooves on the inner walls of the first end plate and the second end plate are respectively arranged on the outer walls of the first inserting plate and the second inserting plate.
3. The integrated device for preparing and cleaning the high-molecular flexible polymer microtubes as claimed in claim 1, wherein a heating unit is further provided on the outer wall of the curing tank for heating the liquid polymer in the curing tank to increase viscosity and reduce dripping during movement.
4. The integrated apparatus for preparing and cleaning a polymer microtube according to claim 3, wherein a temperature sensor for measuring the temperature of the liquid polymer is provided in the curing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385203.6A CN116571501A (en) | 2023-04-12 | 2023-04-12 | Preparation and cleaning integrated device for high-molecular flexible polymer microtube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385203.6A CN116571501A (en) | 2023-04-12 | 2023-04-12 | Preparation and cleaning integrated device for high-molecular flexible polymer microtube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116571501A true CN116571501A (en) | 2023-08-11 |
Family
ID=87542232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310385203.6A Pending CN116571501A (en) | 2023-04-12 | 2023-04-12 | Preparation and cleaning integrated device for high-molecular flexible polymer microtube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116571501A (en) |
-
2023
- 2023-04-12 CN CN202310385203.6A patent/CN116571501A/en active Pending
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