CN113990678B - Electrode pin surface polymer remover for tantalum capacitor and removing method thereof - Google Patents
Electrode pin surface polymer remover for tantalum capacitor and removing method thereof Download PDFInfo
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- CN113990678B CN113990678B CN202111153901.0A CN202111153901A CN113990678B CN 113990678 B CN113990678 B CN 113990678B CN 202111153901 A CN202111153901 A CN 202111153901A CN 113990678 B CN113990678 B CN 113990678B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/06—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00 with provision for removing metal surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
Abstract
The invention belongs to the technical field of tantalum capacitors, and particularly relates to a method for removing a polymer on the surface of an electrode needle for a tantalum capacitor, which comprises the steps of placing the electrode needle with the polymer on the surface to be removed in a soaking tank, adding a sufficient amount of remover into the soaking tank, soaking for 2-6h, and naturally drying after soaking; fixing the electrode needle which is naturally dried on a stepping platform, and stripping the surface of the electrode needle by adopting a laser spot-scanning method; the remover comprises the following components in parts by weight: 20-50 parts of softener, 12-26 parts of surfactant, 24-48 parts of inorganic acid, 2-6 parts of coupling agent and 4-12 parts of emulsifier. The defects of the prior art are overcome, the polymer on the surface of the electrode needle is softened by using a remover, and then the polymer is removed in a laser spot-shooting mode.
Description
Technical Field
The invention belongs to the technical field of tantalum capacitors, and particularly relates to a removing agent for a polymer on the surface of an electrode pin for a tantalum capacitor and a removing method thereof.
Background
With the development of electronic technology, various electronic products are developed in a higher frequency direction, and it is a research hotspot to improve the high-frequency characteristics of electrolytic capacitors. In order to further reduce ESR, organic polymers having high conductivity have been used as a cathode material of tantalum electrolytic capacitors instead of manganese dioxide. The high molecular material needs to use a chemical polymerization method and an electrochemical polymerization method when manufacturing the tantalum capacitor cathode, and a large number of electrode needles are used in the electrochemical polymerization process, so that the polymer is deposited on the surface of the tantalum anode block to form the cathode of the high molecular tantalum capacitor.
In the existing manufacturing process of the tantalum capacitor cathode, after the electrode needle is used, the polymer grows on the surface of the electrode needle, so that the conductive effect is poor, the electrode needle cannot be used continuously, the electrode needle needs to be replaced frequently, and the use cost is increased.
Disclosure of Invention
The invention aims to provide an electrode needle surface polymer remover for a tantalum capacitor and a removing method thereof, which overcome the defects of the prior art, soften the polymer on the surface of an electrode needle by using the remover, and remove the polymer in a laser spot-shooting mode.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the electrode pin surface polymer remover for the tantalum capacitor comprises the following components in parts by weight: 20-50 parts of softener, 12-26 parts of surfactant, 24-48 parts of acid, 2-6 parts of coupling agent and 4-12 parts of emulsifier.
Further, the softener comprises the following raw materials in parts by weight: 30-40 parts of sodium dodecyl sulfate, 10-16 parts of polyethylene glycol, 5-10 parts of diethylene glycol monobutyl ether, 1-2 parts of N-methyl pyrrolidone, 0.6-0.8 part of defoaming agent and the balance of deionized water.
Further, the preparation method of the softener comprises the following steps:
(1) Adding half of deionized water into a reaction kettle with heating and stirring functions, and heating to 60 ℃;
(2) Starting the stirring function of the reaction kettle, sequentially adding sodium dodecyl sulfate, polyethylene glycol and diethylene glycol monobutyl ether under the constant temperature condition, and stirring for dissolving;
(3) Naturally cooling to normal temperature under the stirring condition, and simultaneously adding the other half of deionized water into the reaction kettle;
(4) And after cooling to normal temperature, adding N-methyl pyrrolidone and a defoaming agent into the reaction kettle, and continuously stirring until the N-methyl pyrrolidone and the defoaming agent are completely dissolved.
Further, the surfactant includes an anionic surfactant and a nonionic surfactant at a weight ratio of (3.
Further, the acid comprises methanesulfonic acid, phosphoric acid, hydrochloric acid, hydrobromic acid, tartaric acid and acetic acid, and the acid is prepared according to the following mass ratio: 20% of methanesulfonic acid, 18% of phosphoric acid, 6% of hydrochloric acid, 12% of hydrobromic acid, 12% of tartaric acid and 32% of acetic acid.
Further, the coupling agent is neodecanoic acid or dibutyl ether; the emulsifier is any one or a mixture of more of AEO9, AEO7, dodecyl amidopropyl betaine and coconut oil fatty acid diethanolamide.
The invention also provides a method for removing the polymer on the surface of the electrode needle for the tantalum capacitor, which uses the remover for removing the polymer on the surface of the electrode needle and comprises the following steps:
step 1: placing the electrode needle with the surface polymer to be removed in a soaking tank, adding a sufficient amount of remover into the soaking tank, soaking for 2-6h, and naturally drying in air after soaking;
and 2, step: and fixing the electrode needle which is naturally dried on a stepping platform, and stripping the surface of the electrode needle by adopting a laser spot-scanning method.
Further, the laser spot-shooting scanning method is that a laser head carries out demoulding on the electrode needle which is stepped to a spot-shooting position, the spot-shooting position is a projection position of the laser head, and the angle of the laser head can be adjusted at will within the range of 0-180 degrees.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the softening treatment is carried out on the polymer on the surface of the electrode needle through the compounding of the softening agent, the surfactant and the acid, so that the electrode needle can be quickly stripped, and the treatment efficiency is accelerated.
2. The invention adopts a laser spot-scanning mode to process the surface of the electrode needle after being processed by the remover, and quickly and accurately peels off the polymer on the surface of the electrode needle, so that the electrode needle can be repeatedly used, and the use cost is reduced.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment discloses an electrode pin surface polymer remover for a tantalum capacitor, which comprises the following components in parts by weight: 20 parts of softener, 12 parts of surfactant, 24 parts of acid, 2 parts of coupling agent and 4 parts of emulsifier.
The softening agent comprises the following raw materials in parts by weight: 30 parts of sodium dodecyl sulfate, 10 parts of polyethylene glycol, 5 parts of diethylene glycol monobutyl ether, 1 part of N-methyl pyrrolidone, 0.6 part of defoaming agent and the balance of deionized water; the surfactant comprises an anionic surfactant and a nonionic surfactant in a weight ratio of (3; the acid comprises methanesulfonic acid, phosphoric acid, hydrochloric acid, hydrobromic acid, tartaric acid and acetic acid, and is prepared according to the following mass ratio: 20% of methanesulfonic acid, 18% of phosphoric acid, 6% of hydrochloric acid, 12% of hydrobromic acid, 12% of tartaric acid and 32% of acetic acid; the coupling agent is neodecanoic acid or dibutyl ether; the emulsifier is any one or a mixture of more of AEO9, AEO7, dodecyl amido propyl betaine and coconut oil fatty acid diethanolamide.
The preparation method of the softener comprises the following steps:
(1) Adding half of deionized water into a reaction kettle with heating and stirring functions, and heating to 60 ℃;
(2) Starting the stirring function of the reaction kettle, sequentially adding sodium dodecyl sulfate, polyethylene glycol and diethylene glycol monobutyl ether under the constant temperature condition, and stirring for dissolving;
(3) Naturally cooling to normal temperature under the stirring condition, and simultaneously adding the other half of deionized water into the reaction kettle;
(4) And after cooling to normal temperature, adding N-methyl pyrrolidone and a defoaming agent into the reaction kettle, and continuously stirring until the N-methyl pyrrolidone and the defoaming agent are completely dissolved.
Example 2
The embodiment discloses a remover for polymer on the surface of an electrode pin for a tantalum capacitor, which has a formula proportion and a preparation method basically the same as those of embodiment 1, except that: the remover comprises the following components in parts by weight: 35 parts of softener, 19 parts of surfactant, 36 parts of acid, 4 parts of coupling agent and 8 parts of emulsifier.
Example 3
The embodiment discloses a removing agent for polymer on the surface of an electrode pin for a tantalum capacitor, the formula proportion and the preparation method of the removing agent are basically the same as those of embodiment 1, and the difference is as follows: the remover comprises the following components in parts by weight: 50 parts of softener, 26 parts of surfactant, 48 parts of acid, 6 parts of coupling agent and 12 parts of emulsifier.
Example 4
The embodiment discloses a removing agent for polymer on the surface of an electrode pin for a tantalum capacitor, the formula proportion and the preparation method of the removing agent are basically the same as those of embodiment 1, and the difference is as follows: the softening agent comprises the following raw materials in parts by weight: 35 parts of lauryl sodium sulfate, 13 parts of polyethylene glycol, 12.5 parts of diethylene glycol monobutyl ether, 1.5 parts of N-methyl pyrrolidone, 0.7 part of defoaming agent and the balance of deionized water.
Example 5
The embodiment discloses a remover for polymer on the surface of an electrode pin for a tantalum capacitor, which has a formula proportion and a preparation method basically the same as those of embodiment 1, except that: the softener comprises the following raw materials in parts by weight: 40 parts of lauryl sodium sulfate, 16 parts of polyethylene glycol, 10 parts of diethylene glycol monobutyl ether, 2 parts of N-methyl pyrrolidone, 0.8 part of defoaming agent and the balance of deionized water.
Example 6
The embodiment discloses a method for removing a polymer on the surface of an electrode pin for a tantalum capacitor, which respectively uses the surface polymer removers prepared in the embodiments 1 to 6, and specifically comprises the following steps:
step 1: placing the electrode needle with the surface polymer to be removed in an immersion tank, adding a sufficient removing agent into the immersion tank, immersing for 2 hours, and naturally drying after immersion;
step 2: and fixing the electrode needle which is naturally dried on a stepping platform, and stripping the surface of the electrode needle by adopting a laser spot-scanning method.
The laser spot-shooting scanning method comprises the step of demoulding the electrode needle which is stepped to a spot-shooting position by a laser head, wherein the spot-shooting position is a projection position of the laser head, and the angle of the laser head can be randomly adjusted between 0-180 degrees.
The laser spot-shooting adopts a nanosecond short pulse laser, the size of a light spot is 8mm, the power of the laser is 300W-500W, the pulse width is 20-40 ns, the scanning speed is within the range of 200 mm/min-800 mm/min, the pulse frequency is 10kHz, and the laser scanning times are 2-10 (the higher the laser power is, the lower the scanning speed is, the less the required scanning times are).
Example 7
This example discloses a method for removing polymer on the surface of electrode pin for tantalum capacitor, which is substantially the same as example 6 except that: the electrode needle is soaked in the remover for 4h.
Example 8
This example discloses a method for removing polymer on the surface of electrode pin for tantalum capacitor, which is substantially the same as example 6 except that: the soaking time of the electrode needle in the remover is 6h.
And (3) verification experiment:
respectively carrying out surface polymer removal treatment on the electrode needles which are used for the same time length under the same state according to the removal methods of the embodiments 6 to 8, and meanwhile, setting a comparison group (the electrode needles of the comparison group are not soaked in the removal liquid); the removal rate of the polymer on the surface of the electrode needle is counted, and specific results are shown in table 1:
according to the results in table 1, the electrode needle surface polymer remover provided by the invention can effectively soften the polymer, so that the polymer can be quickly peeled off, and the treatment efficiency is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. A method for removing a polymer on the surface of an electrode pin for a tantalum capacitor is characterized by comprising the following steps: the method comprises the following steps:
step 1: placing the electrode needle with the surface polymer to be removed in an immersion tank, adding a sufficient amount of remover into the immersion tank, immersing for 2-6h, and naturally drying after immersion;
step 2: fixing the electrode needle which is naturally dried on a stepping platform, and stripping the surface of the electrode needle by adopting a laser spot-scanning method;
the remover comprises the following components in parts by weight: 20-50 parts of a softener, 12-26 parts of a surfactant, 24-48 parts of an acid, 2-6 parts of a coupling agent and 4-12 parts of an emulsifier; the softening agent comprises the following raw materials in parts by weight: 30-40 parts of sodium dodecyl sulfate, 10-16 parts of polyethylene glycol, 5-10 parts of diethylene glycol monobutyl ether, 1-2 parts of N-methyl pyrrolidone, 0.6-0.8 part of defoaming agent and the balance of deionized water; the surfactant comprises an anionic surfactant and a nonionic surfactant in a weight ratio of (3;
the acid comprises methanesulfonic acid, phosphoric acid, hydrochloric acid, hydrobromic acid, tartaric acid and acetic acid, and is prepared according to the following mass ratio: 20% of methanesulfonic acid, 18% of phosphoric acid, 6% of hydrochloric acid, 12% of hydrobromic acid, 12% of tartaric acid and 32% of acetic acid.
2. The method for removing the polymer on the surface of the electrode pin for the tantalum capacitor as claimed in claim 1, wherein: the laser spot-shooting scanning method is characterized in that a laser head is used for demoulding the electrode needle which is stepped to a spot-shooting position, the spot-shooting position is a projection position of the laser head, and the angle of the laser head can be adjusted at will within the range of 0-180 degrees.
3. The method for removing the polymer on the surface of the electrode pin for the tantalum capacitor as claimed in claim 1, wherein: the preparation method of the softening agent comprises the following steps:
adding half of deionized water into a reaction kettle with heating and stirring functions, and heating to 60 ℃;
starting the stirring function of the reaction kettle, sequentially adding sodium dodecyl sulfate, polyethylene glycol and diethylene glycol monobutyl ether under the constant temperature condition, and stirring for dissolving;
naturally cooling to normal temperature under the stirring condition, and simultaneously adding the other half of deionized water into the reaction kettle;
and after cooling to normal temperature, adding N-methyl pyrrolidone and a defoaming agent into the reaction kettle, and continuously stirring until the N-methyl pyrrolidone and the defoaming agent are completely dissolved.
4. The method for removing the polymer on the surface of the electrode pin for the tantalum capacitor as claimed in claim 1, wherein: the coupling agent is neodecanoic acid or dibutyl ether; the emulsifier is any one or a mixture of more of AEO9, AEO7, dodecyl amidopropyl betaine and coconut oil fatty acid diethanolamide.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153901.0A CN113990678B (en) | 2021-09-29 | 2021-09-29 | Electrode pin surface polymer remover for tantalum capacitor and removing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111153901.0A CN113990678B (en) | 2021-09-29 | 2021-09-29 | Electrode pin surface polymer remover for tantalum capacitor and removing method thereof |
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| CN113990678A CN113990678A (en) | 2022-01-28 |
| CN113990678B true CN113990678B (en) | 2023-01-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102049819B1 (en) * | 2012-05-30 | 2019-11-28 | 제온 코포레이션 | Negative electrode for secondary batteries and method for producing same |
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| CN102892823A (en) * | 2010-04-14 | 2013-01-23 | 路博润高级材料公司 | Thickened amino acid surfactant compositions and methods therefor |
| CN102874904A (en) * | 2012-07-04 | 2013-01-16 | 北京理工大学 | Method and device for electrolysis of self-cleaning composite graphite electrode |
| CN102942817A (en) * | 2012-11-12 | 2013-02-27 | 中国航天科技集团公司第九研究院第七七一研究所 | Method for preparing paint remover suitable for epoxy group printed circuit board |
| CN105397299A (en) * | 2015-12-16 | 2016-03-16 | 深圳顺络电子股份有限公司 | Treatment method and device for surface oxidation films of tantalum capacitor tantalum wires |
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