CN115491045A - Self-healing metalized film capacitor dip-sealing wax - Google Patents
Self-healing metalized film capacitor dip-sealing wax Download PDFInfo
- Publication number
- CN115491045A CN115491045A CN202210926392.9A CN202210926392A CN115491045A CN 115491045 A CN115491045 A CN 115491045A CN 202210926392 A CN202210926392 A CN 202210926392A CN 115491045 A CN115491045 A CN 115491045A
- Authority
- CN
- China
- Prior art keywords
- wax
- healing
- self
- asphalt
- film capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 22
- 239000011104 metalized film Substances 0.000 title claims abstract description 19
- 239000012173 sealing wax Substances 0.000 title claims abstract description 16
- 239000010426 asphalt Substances 0.000 claims abstract description 25
- 239000001993 wax Substances 0.000 claims abstract description 24
- 239000004200 microcrystalline wax Substances 0.000 claims abstract description 15
- 235000019808 microcrystalline wax Nutrition 0.000 claims abstract description 15
- 239000002199 base oil Substances 0.000 claims abstract description 9
- -1 polyethylene Polymers 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000012164 animal wax Substances 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 235000019198 oils Nutrition 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 2
- 239000008158 vegetable oil Substances 0.000 claims description 2
- 239000012178 vegetable wax Substances 0.000 claims description 2
- 238000005538 encapsulation Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 claims 1
- 238000004382 potting Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 12
- 239000003822 epoxy resin Substances 0.000 abstract description 10
- 229920000647 polyepoxide Polymers 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Civil Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a self-healing metalized film capacitor dip-sealing wax which comprises the following components in percentage by weight: base oil: 0 to 30 percent; wax: 10 to 30 percent; asphalt: 40-90%; grain refiner: 0 to 10 percent. According to the invention, the viscosity of the asphalt is reduced by adding the wax compound with low viscosity and high melting point and the base oil into the asphalt, and the high-temperature performance of the asphalt is improved, so that the defects of high sealing cost due to the use of epoxy resin and microcrystalline wax, high sealing viscosity due to the use of black glue, difficulty in filling and no high temperature resistance are overcome, and the product has the advantages of lower cost than microcrystalline wax, low shrinkage rate, low viscosity compared with black glue, easiness in filling and good high temperature resistance.
Description
Technical Field
The invention relates to the technical field of sealing wax, in particular to self-healing metalized film capacitor dip-sealing wax.
Background
At present, epoxy resin, microcrystalline wax or black glue (asphalt) is generally adopted to dip and seal a gap between a capacitor core and a capacitor metal shell in the production process of the self-healing metalized film capacitor, the epoxy resin, the microcrystalline wax or the black glue mainly plays roles in insulation, sealing, supporting and preventing water vapor from entering, but the epoxy resin, the microcrystalline wax or the black glue has certain problems. Firstly, the epoxy resin is used as a sealant, has the advantages of better high-temperature resistance than microcrystalline wax and black glue, but has the defects of higher cost, complex curing process and long time of the epoxy resin, and greatly reduces the production efficiency; secondly, the microcrystalline wax is used as a sealant, the curing time is shorter than that of epoxy, the cost is lower than that of epoxy resin, but the cost is still far higher than that of black glue, the shrinkage rate is higher, and the sealant is easy to crack; thirdly, the sealant made of the black glue has the advantages of low cost and the disadvantages of poor high temperature resistance, high viscosity and difficult filling.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the self-healing metalized film capacitor dip sealing wax which has the advantages of good high-temperature resistance and corrosion resistance, moderate viscosity and low cost, and solves the defects of high dip sealing cost due to the use of epoxy resin and microcrystalline wax, high dip sealing viscosity due to the use of black glue, difficult filling and no high temperature resistance.
In order to achieve the purpose, the invention adopts the technical scheme that: the self-healing metalized film capacitor dip-sealing wax comprises the following components in percentage by weight:
preferably, the base oil is selected from mineral oil, vegetable oil, synthetic oil.
Preferably, the wax is selected from the group consisting of paraffin wax, microcrystalline wax, fischer-tropsch wax, animal wax, vegetable wax, and metallic soap wax.
Preferably, the asphalt is a base asphalt, including natural asphalt and petroleum asphalt.
Preferably, the grain refiner is selected from ethylene vinyl acetate copolymer, microcrystalline wax, polyethylene wax, polypropylene wax.
Preferably, the self-healing metalized film capacitor dip-sealing wax comprises the following components in percentage by weight:
preferably, the self-healing metalized film capacitor dip-sealing wax comprises the following components in percentage by weight:
preferably, the self-healing metalized film capacitor dip-sealing wax comprises the following components in percentage by weight:
the preparation process of the invention is as follows: adding the base oil into a reaction kettle, adding a grain refiner, heating until the grain refiner is completely melted, then adding wax and asphalt, cooling and taking out of the kettle after the grain refiner is completely melted, and cooling and forming.
The new material formed by organically combining the wax material and the asphalt material has the advantages of the wax material and the asphalt material and avoids the disadvantages of the wax material and the asphalt material. The application of the coupling agent improves the compatibility of the wax material and the asphalt, and improves the stability and the high-temperature resistance of the material. The introduction of the base oil can adjust the hardness degree and viscosity of the capacitor wax, and meet the use requirements of different customers.
According to the invention, the viscosity of the asphalt is reduced by adding the wax compound with low viscosity and high melting point and the base oil into the asphalt, and the high temperature performance of the asphalt is improved, so that the product has good high temperature resistance and corrosion resistance, low shrinkage rate, moderate viscosity and low cost, overcomes the defects of high immersion sealing cost due to the use of epoxy resin and microcrystalline wax, high immersion sealing viscosity due to the use of black glue, difficulty in filling and no high temperature resistance, and has the advantages of low cost and shrinkage rate compared with microcrystalline wax, easiness in filling and good high temperature resistance compared with the black glue.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications can be made by those skilled in the art after reading the contents of the present invention, and these equivalents also fall within the scope of the invention defined by the present invention.
Example 1
A self-healing metallized film capacitor sealing wax,
adding all base oil into a reaction kettle, adding all grain refiners, heating until the grain refiners are completely melted, then adding all wax and asphalt, cooling and taking out of the kettle after the grain refiners are completely melted, and cooling and forming.
Example 2
A self-healing metallized film capacitor dip-sealing wax:
example 3
Ethylene vinyl acetate copolymer: 2 percent.
Example 4
Example 5
Table 1 test table for product performance in examples
The self-healing metalized film capacitor dip-sealing wax has the advantages of excellent high-temperature resistance and corrosion resistance, low shrinkage, moderate viscosity and excellent comprehensive performance.
According to the invention, the wax compound with low viscosity and high melting point and the base oil are added into the asphalt to reduce the viscosity of the asphalt and improve the high-temperature performance of the asphalt, so that the defects of high cost of sealing by using epoxy resin and microcrystalline wax, high viscosity, difficult filling and no high temperature resistance caused by using black glue are overcome.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, and is provided in the accompanying drawings. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The self-healing metalized film capacitor dip-sealing wax is characterized by comprising the following components in percentage by weight:
2. a self-healing metalized film capacitor dip wax as recited in claim 1, wherein the base oil is selected from the group consisting of mineral oil, vegetable oil, and synthetic oil.
3. A self-healing metalized film capacitor dip-sealing wax as recited in claim 1, wherein the wax is selected from the group consisting of paraffin wax, microcrystalline wax, fischer-tropsch wax, animal wax, vegetable wax, and metallic soap wax.
4. A self-healing metalized film capacitor potting wax as defined in claim 1, wherein the asphalt is a matrix asphalt including natural asphalt and petroleum asphalt.
5. A self-healing metalized film capacitor encapsulation wax as recited in claim 1, wherein the grain refiner is selected from the group consisting of ethylene vinyl acetate copolymer, microcrystalline wax, polyethylene wax, and polypropylene wax.
6. The self-healing metalized film capacitor dip-sealing wax as recited in claim 1, which comprises the following components in percentage by weight:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926392.9A CN115491045A (en) | 2022-08-03 | 2022-08-03 | Self-healing metalized film capacitor dip-sealing wax |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926392.9A CN115491045A (en) | 2022-08-03 | 2022-08-03 | Self-healing metalized film capacitor dip-sealing wax |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115491045A true CN115491045A (en) | 2022-12-20 |
Family
ID=84466677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210926392.9A Pending CN115491045A (en) | 2022-08-03 | 2022-08-03 | Self-healing metalized film capacitor dip-sealing wax |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115491045A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR730716A (en) * | 1931-06-25 | 1932-08-20 | Electric capacitor | |
| US4812941A (en) * | 1987-08-19 | 1989-03-14 | Magnetec Corporation | Capacitor and method of manufacture |
| CN201352497Y (en) * | 2008-07-04 | 2009-11-25 | 骆家星 | Dry type explosion-proof type capacitor |
| CN105713706A (en) * | 2016-01-21 | 2016-06-29 | 泰尔精蜡（上海）有限公司 | Asphalt type wire rope surface grease |
| CN210403513U (en) * | 2019-10-09 | 2020-04-24 | 苏州工业园区苏容电气有限公司 | Capacitor filled with dielectric |
| CN113881241A (en) * | 2021-09-28 | 2022-01-04 | 南京天诗新材料科技有限公司 | Low-shrinkage blended wax material and preparation method thereof |
-
2022
- 2022-08-03 CN CN202210926392.9A patent/CN115491045A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR730716A (en) * | 1931-06-25 | 1932-08-20 | Electric capacitor | |
| US4812941A (en) * | 1987-08-19 | 1989-03-14 | Magnetec Corporation | Capacitor and method of manufacture |
| CN201352497Y (en) * | 2008-07-04 | 2009-11-25 | 骆家星 | Dry type explosion-proof type capacitor |
| CN105713706A (en) * | 2016-01-21 | 2016-06-29 | 泰尔精蜡（上海）有限公司 | Asphalt type wire rope surface grease |
| CN210403513U (en) * | 2019-10-09 | 2020-04-24 | 苏州工业园区苏容电气有限公司 | Capacitor filled with dielectric |
| CN113881241A (en) * | 2021-09-28 | 2022-01-04 | 南京天诗新材料科技有限公司 | Low-shrinkage blended wax material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 佟天夫等编著, 机械工业出版社 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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