EP4086369A1 - Method for preventing short circuiting between inner surface of capillary tube or special-shaped tube and conductive electrode - Google Patents
Method for preventing short circuiting between inner surface of capillary tube or special-shaped tube and conductive electrode Download PDFInfo
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- EP4086369A1 EP4086369A1 EP21893475.0A EP21893475A EP4086369A1 EP 4086369 A1 EP4086369 A1 EP 4086369A1 EP 21893475 A EP21893475 A EP 21893475A EP 4086369 A1 EP4086369 A1 EP 4086369A1
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- tube
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- short circuit
- capillary tube
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 20
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002033 PVDF binder Substances 0.000 claims abstract description 10
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 7
- 239000004626 polylactic acid Substances 0.000 claims abstract description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 4
- 239000002861 polymer material Substances 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 14
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 239000010936 titanium Substances 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 238000003487 electrochemical reaction Methods 0.000 abstract description 5
- 229920006254 polymer film Polymers 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 5
- 239000002071 nanotube Substances 0.000 description 5
- 239000004408 titanium dioxide Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/26—Anodisation of refractory metals or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/005—Apparatus specially adapted for electrolytic conversion coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/005—Contacting devices
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
Definitions
- the invention relates to the field of electrode material short-circuit prevention, in particular to a method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube.
- Electrochemical treatment serves as one of branches of chemical treatment and is widely applied to the fields of energy, biology, environment, metal material surface modification and the like.
- the electrochemical reaction device is generally composed of a power supply, a cathode, an anode, an electrolyte and the like.
- the cathode and the anode are made of conductive materials so as to ensure conduction of system current. In an open system, the distance between the cathode and the anode is large and can be adjusted, and in the reaction process, contact caused by external force (such as bubble floating and stress of liquid flowing on the cathode and the anode) is avoided.
- the distance between the cathode and the anode is relatively small, so that the cathode and the anode are very easy to contact under the action of external force, and the reaction cannot be smoothly carried out due to short circuit of the cathode and the anode.
- the capillary tube or the special-shaped tube serves as the anode, and a cathode filament needs to be arranged in the anode; however, the prior art can not guarantee that short circuit of the cathode filament and the capillary tube or the special-shaped tube in the reaction process will not happen, let alone preparation of the superwetting coating on the inner surface of the capillary tube or the special-shaped tube. Therefore, it is urgent to develop a method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube, which is convenient to operate, wide in applicability and low in cost.
- the invention aims to provide a method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube, which is characterized by comprising the following steps: preparing a high-molecular polymer solution; the solvent of the solution being one of N-methylpyrrolidone (NMP) and N,N-dimethylformamide (DMF), and the solute of the solution being one of polylactic acid (PLA), polyvinyl chloride (PVC), polyvinylidene fluoride (PVDF) and other high polymer materials; and cleaning and drying an electrode used for penetrating into the capillary tube or the special-shaped tube, and then cladding the surface of the electrode with a high-molecular polymer.
- NMP N-methylpyrrolidone
- DMF N,N-dimethylformamide
- PVA polylactic acid
- PVC polyvinyl chloride
- PVDF polyvinylidene fluoride
- the capillary tube or the special-shaped tube needs to be subjected to electrochemical treatment.
- the capillary tube or the special-shaped tube is immersed in electrolyte to be subjected to surface treatment
- the penetrated electrode serves as a cathode or an anode
- the other electrode is the capillary tube or the special-shaped tube (the capillary tube, the special-shaped tube and the electrode are all made of conductive materials).
- the concentration of the high-molecular polymer solution is 10-100g/L.
- the electrode is an electrode wire made of stainless steel, copper, iron, platinum or titanium.
- cladding of the high-molecular polymer means that the high-molecular polymer solution is coated and dried.
- the thickness of a high-molecular polymer film cladded on the electrode is 1-50 ⁇ m.
- the capillary tube or the special-shaped tube is a capillary metal tube, a needle tube for detection, a heat dissipation copper tube for a mobile phone or a spiral titanium tube for condensation.
- the cleaning time of the electrode is 0.5-4 hours
- the drying temperature is 50-80 DEG C
- the drying time is 2-5 hours.
- the temperature for drying the electrode is 50-80 DEG C, and the drying time is 0.5-4 hours.
- a molecular polymer solution with polyvinylidene fluoride serving as the solute and N-methylpyrrolidone serving as the solvent needs to be prepared, and the concentration of the molecular polymer solution is 10 g/L.
- the method includes the following steps:
- the uncladded stainless steel wire with the diameter of 0.2 mm is metal, and when the uncladded stainless steel wire is independently used as a cathode in an anodic oxidation method, only 0.2 mm of residual space is left in a tube.
- the cathode stainless steel wire is very easy to contact with the anode capillary titanium tube to cause short circuit because the electrolyte has a scouring effect on the cathode stainless steel wire. As shown in Fig.
- the outer surface of the treated cathode stainless steel wire is coated with a layer of high-molecular polymer diaphragm with the thickness of about 20-30 ⁇ m by cladding a high-molecular polymer film, and the layer of diaphragm can separate the cathode from the anode during anodic oxidation, so that an electric field is not shielded while short circuit is prevented, and anodic oxidation can be carried out.
- the length of the titanium dioxide nanotube array prepared by anodic oxidation is about 3 ⁇ m, and the titanium dioxide nanotube array has the characteristics of smooth tube wall, good opening and the like.
- the method has the advantages of convenience in operation, wide application range, low cost and the like.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
- The invention relates to the field of electrode material short-circuit prevention, in particular to a method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube.
- Electrochemical treatment serves as one of branches of chemical treatment and is widely applied to the fields of energy, biology, environment, metal material surface modification and the like. The electrochemical reaction device is generally composed of a power supply, a cathode, an anode, an electrolyte and the like. The cathode and the anode are made of conductive materials so as to ensure conduction of system current. In an open system, the distance between the cathode and the anode is large and can be adjusted, and in the reaction process, contact caused by external force (such as bubble floating and stress of liquid flowing on the cathode and the anode) is avoided. However, for a confined semi-closed system (such as a capillary tube and a special-shaped tube), the distance between the cathode and the anode is relatively small, so that the cathode and the anode are very easy to contact under the action of external force, and the reaction cannot be smoothly carried out due to short circuit of the cathode and the anode. For example, when an electrochemical reaction method is adopted to carry out superwetting modification on the inner surface of the capillary tube or the special-shaped tube such as the capillary metal tube, the needle tube for detection, the heat dissipation copper tube for the mobile phone, the spiral titanium tube for condensation and the like, the capillary tube or the special-shaped tube serves as the anode, and a cathode filament needs to be arranged in the anode; however, the prior art can not guarantee that short circuit of the cathode filament and the capillary tube or the special-shaped tube in the reaction process will not happen, let alone preparation of the superwetting coating on the inner surface of the capillary tube or the special-shaped tube. Therefore, it is urgent to develop a method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube, which is convenient to operate, wide in applicability and low in cost.
- The invention aims to provide a method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube, which is characterized by comprising the following steps: preparing a high-molecular polymer solution; the solvent of the solution being one of N-methylpyrrolidone (NMP) and N,N-dimethylformamide (DMF), and the solute of the solution being one of polylactic acid (PLA), polyvinyl chloride (PVC), polyvinylidene fluoride (PVDF) and other high polymer materials; and cleaning and drying an electrode used for penetrating into the capillary tube or the special-shaped tube, and then cladding the surface of the electrode with a high-molecular polymer. After the electrode penetrates into the capillary tube or the special-shaped tube, the capillary tube or the special-shaped tube needs to be subjected to electrochemical treatment. For example, the capillary tube or the special-shaped tube is immersed in electrolyte to be subjected to surface treatment, the penetrated electrode serves as a cathode or an anode, and the other electrode is the capillary tube or the special-shaped tube (the capillary tube, the special-shaped tube and the electrode are all made of conductive materials).
- Furthermore, the concentration of the high-molecular polymer solution is 10-100g/L. Furthermore, the electrode is an electrode wire made of stainless steel, copper, iron, platinum or titanium.
- Furthermore, cladding of the high-molecular polymer means that the high-molecular polymer solution is coated and dried.
- Furthermore, the thickness of a high-molecular polymer film cladded on the electrode is 1-50 µm.
- Furthermore, the capillary tube or the special-shaped tube is a capillary metal tube, a needle tube for detection, a heat dissipation copper tube for a mobile phone or a spiral titanium tube for condensation.
- Furthermore, the cleaning time of the electrode is 0.5-4 hours, the drying temperature is 50-80 DEG C, and the drying time is 2-5 hours.
- Furthermore, after the high-molecular polymer solution is coated, the temperature for drying the electrode is 50-80 DEG C, and the drying time is 0.5-4 hours.
- Compared with the prior art, the method has the following remarkable advantages and beneficial effects:
- 1. The problem that the cathode and the anode are prone to short circuit in a confined semi-closed system is solved;
- 2. The operation is convenient, and the process production difficulty is low; and
- 3. The usability is wide, and the sizes and materials of the cathode and the anode are not limited.
-
-
Fig. 1 is a process schematic diagram for preparing the short-circuit-proof electrode cladded with the high-molecular polymer. -
Fig. 2 is a scanning electron micrograph of the cathode filament cladded with the high-molecular polymer film. In the graphs, (a) is the surface graph of the cathode filament, (b) is the cross-sectional graph of the cathode filament, (c) is the surface graph of the film before electrochemical reaction, and (d) is the surface graph of the film after electrochemical reaction. -
Fig. 3 is a scanning electron micrograph of a titanium dioxide nanotube array prepared on the inner surface of a titanium tube with the inner diameter of 0.4 mm by using an electrochemical anodic oxidation method according to the method disclosed by the invention. -
Fig. 4 is the statistical result of the uniformity of the titanium dioxide nanotube array prepared on the inner surface of the titanium tube with the inner diameter of 0.4 mm and the length of 70mm by using the electrochemical anodic oxidation method according to the method disclosed by the invention. - The invention is further explained in combination with the following embodiments, but the subject range of the invention is not understood to be only limited to the following embodiments. Without departing from the above technical idea of the invention, various substitutions and changes made according to the general technical knowledge and frequently used means in the art shall be included in the protection scope of the invention.
- According to the method for preventing short circuit of the conductive electrode for the inner surface of the capillary tube or the special-shaped tube, a molecular polymer solution with polyvinylidene fluoride serving as the solute and N-methylpyrrolidone serving as the solvent needs to be prepared, and the concentration of the molecular polymer solution is 10 g/L.
- The method includes the following steps:
- (1) ultrasonic oscillation cleaning was carried out on a stainless steel wire electrode with the diameter of 0.2 mm in a detergent, alcohol and deionized water sequentially, and the cleaning time was 0.5 h separately;
- (2) the stainless steel wire was blow-dried through a nitrogen spray gun;
- (3) the stainless steel wire was dried, the drying temperature was 50 DEG C, and the drying time was 1 h;
- (4) the dried stainless steel wire was taken as a substrate, and the surface of the substrate was repeatedly coated with the high-molecular polymer solution for 20-25 times;
- (5) the stainless steel wire coated with the polyvinylidene fluoride solution was dried, the drying temperature was 50 DEG C, and the drying time was 2 h; and
- (6) the stainless steel wire was made to penetrate into a dry capillary titanium tube with the inner diameter of 0.4 mm, a power supply was connected, and the electrolyte was introduced for electrochemical treatment (anodic oxidation treatment).
- Relevant performance data of the embodiment is as follows:
In a contrast experiment, the uncladded stainless steel wire with the diameter of 0.2 mm is metal, and when the uncladded stainless steel wire is independently used as a cathode in an anodic oxidation method, only 0.2 mm of residual space is left in a tube. When the electrolyte is introduced, the cathode stainless steel wire is very easy to contact with the anode capillary titanium tube to cause short circuit because the electrolyte has a scouring effect on the cathode stainless steel wire. As shown inFig. 2 , the outer surface of the treated cathode stainless steel wire is coated with a layer of high-molecular polymer diaphragm with the thickness of about 20-30 µm by cladding a high-molecular polymer film, and the layer of diaphragm can separate the cathode from the anode during anodic oxidation, so that an electric field is not shielded while short circuit is prevented, and anodic oxidation can be carried out. As shown inFig. 3 , the length of the titanium dioxide nanotube array prepared by anodic oxidation is about 3 µm, and the titanium dioxide nanotube array has the characteristics of smooth tube wall, good opening and the like.Fig. 4 shows the length statistics of the nanotube array at different positions of the inner surface of the capillary titanium type tube, which indicates that the thickness of the prepared nano coating is uniform and controllable. Meanwhile, the method has the advantages of convenience in operation, wide application range, low cost and the like. - The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was a platinum wire, and the diameter of the platinum wire was 0.4 mm.
- 2. In the step (4), polylactic acid (PLA) served as the solute of the high-molecular polymer, N-methylpyrrolidone (NMP) served as the solvent, the solution concentration was 20 g/L, and the coating number was 20-25 times.
- 3. In the step (6), the anode was a stainless steel capillary tube with the inner diameter of 1mm.
- The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was a copper wire, and the diameter of the copper wire was 0.6 mm.
- 2. In the step (4), polyvinyl chloride (PVC) served as the solute of the high-molecular polymer, N-methylpyrrolidone (NMP) served as the solvent, the solution concentration was 10 g/L, and the coating number was 15-20 times.
- 3. In the step (6), the anode was an aluminum alloy capillary tube with the inner diameter of 1.5 mm.
- The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was iron wire, and the diameter of the iron wire was 1mm.
- 2. In the step (4), polyvinylidene fluoride (PVDF) served as the solute of the high-molecular polymer, N,N-dimethylformamide (DMF) served as the solvent, the solution concentration was 15 g/L, and the coating number was 10-15 times.
- 3. In the step (6), the anode was a spiral capillary titanium heat exchange tube with the inner diameter of 2.5 mm.
- The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was a titanium wire, and the diameter of the titanium wire was 1.5 mm.
- 2. In the step (6), the anode was a special-shaped copper alloy tube with a rectangular inner section (the length was 5.5 mm and the width was 3.0 mm).
- The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was a titanium wire, and the diameter of the titanium wire was 0.5 mm.
- 2. In the step (6), the anode was an L-shaped special-shaped titanium tube with the inner diameter of 3.0 mm.
- The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was an iron wire, and the diameter of the iron wire was 0.4 mm.
- 2. In the step (6), the anode is a T-shaped special-shaped stainless steel tube with the inner diameter of 2.5 mm.
- The difference from the
embodiment 1 is that: - 1. In the step (1), the electrode was an iron wire, and the diameter of the iron wire was 0.4 mm.
- 2. In the step (6), the anode was a V-shaped special-shaped stainless steel tube with the inner diameter of 2.5 mm.
Claims (8)
- A method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube, characterized by comprising the following steps:preparing a high-molecular polymer solution, wherein the solvent of the solution is one selected from N-methylpyrrolidone (NMP) and N,N-dimethylformamide (DMF), and the solute of the solution is a high polymer material, which is one selected from polylactic acid (PLA), polyvinyl chloride (PVC), polyvinylidene fluoride (PVDF), etc.; andcleaning and drying an electrode to be used for penetrating into the capillary tube or the special-shaped tube, and then cladding the surface of the electrode with the high-molecular polymer.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1, characterized in that the concentration of the high-molecular polymer in the solution is 10-100 g/L.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1 or 2, characterized in that the electrode is an electrode wire made of stainless steel, copper, iron, platinum or titanium.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1 or 3, characterized in that the cladding of the high-molecular polymer is produced by coating with the high-molecular polymer solution and drying.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1, characterized in that the high-molecular polymer cladded on the electrode forms a film of a thickness of 1-50 µm.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1, characterized in that the capillary tube or the special-shaped tube is a capillary metal tube, a needle tube for detection, a heat dissipation copper tube for a mobile phone, or a spiral titanium tube for condensation.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1, characterized in that the cleaning time of the electrode is 0.5-4 hours, the drying temperature is 50-80 °C, and the drying time is 2-5 hours.
- The method for preventing short circuit of a conductive electrode for an inner surface of a capillary tube or a special-shaped tube according to claim 1, characterized in that
after being coated with the high-molecular polymer solution, the electrode is dried at a temperature of 50-80°C, and the drying time is 0.5-4 hours.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN202011324722.4A CN112680729B (en) | 2020-11-23 | 2020-11-23 | Short circuit prevention method for conductive electrode on inner surface of capillary tube or special tube |
PCT/CN2021/112807 WO2022105323A1 (en) | 2020-11-23 | 2021-08-16 | Method for preventing short circuiting between inner surface of capillary tube or special-shaped tube and conductive electrode |
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EP4086369A1 true EP4086369A1 (en) | 2022-11-09 |
EP4086369A4 EP4086369A4 (en) | 2023-08-23 |
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EP21893475.0A Pending EP4086369A4 (en) | 2020-11-23 | 2021-08-16 | Method for preventing short circuiting between inner surface of capillary tube or special-shaped tube and conductive electrode |
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CN (1) | CN112680729B (en) |
WO (1) | WO2022105323A1 (en) |
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CN112680729B (en) * | 2020-11-23 | 2022-10-14 | 重庆大学 | Short circuit prevention method for conductive electrode on inner surface of capillary tube or special tube |
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GB8417092D0 (en) * | 1984-07-04 | 1984-08-08 | Tecalemit Group Services Ltd | Internal electroplating of tubular/hollow workpieces |
DE4120679C2 (en) * | 1991-06-22 | 1995-11-09 | Grimma Masch Anlagen Gmbh | Electrolysis process and electrolysis cell for gas-developing or gas-consuming electrolytic processes |
JP3081558B2 (en) * | 1997-04-30 | 2000-08-28 | 株式会社ダイワエクセル | Inner plating method and auxiliary electrode for inner plating |
US20030077515A1 (en) * | 2001-04-02 | 2003-04-24 | Chen George Zheng | Conducting polymer-carbon nanotube composite materials and their uses |
US20040108215A1 (en) * | 2002-12-06 | 2004-06-10 | Com Dev Ltd. | Electroplating anode assembly |
CN101691202B (en) * | 2009-08-11 | 2012-01-04 | 西安交通大学 | Method for preparing polyvinylidene fluoride piezo film with microstructure |
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JP6697210B2 (en) * | 2016-05-27 | 2020-05-20 | 株式会社Fts | Inner surface electrode for inner surface plating of tubular article |
WO2018107092A1 (en) * | 2016-12-09 | 2018-06-14 | The Regents Of The University Of California | Surface-functionalized tubular structures, and methods of making and using the same |
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CN110552042A (en) * | 2019-08-27 | 2019-12-10 | 重庆大学 | preparation method of super-wetting coating on inner surface of U-shaped titanium pipe |
CN112593281A (en) * | 2020-11-23 | 2021-04-02 | 重庆大学 | Preparation method of super-wetting coating suitable for inner surface of stainless steel pipe |
CN112680729B (en) * | 2020-11-23 | 2022-10-14 | 重庆大学 | Short circuit prevention method for conductive electrode on inner surface of capillary tube or special tube |
CN112593280A (en) * | 2020-11-23 | 2021-04-02 | 重庆大学 | Preparation method of super-hydrophobic coating on inner and outer surfaces and end faces of hollow needle |
-
2020
- 2020-11-23 CN CN202011324722.4A patent/CN112680729B/en active Active
-
2021
- 2021-08-16 WO PCT/CN2021/112807 patent/WO2022105323A1/en unknown
- 2021-08-16 EP EP21893475.0A patent/EP4086369A4/en active Pending
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WO2022105323A1 (en) | 2022-05-27 |
EP4086369A4 (en) | 2023-08-23 |
CN112680729A (en) | 2021-04-20 |
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