CN113975857A - Water removal process of shielding oil for metallization coating - Google Patents
Water removal process of shielding oil for metallization coating Download PDFInfo
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- CN113975857A CN113975857A CN202111388906.1A CN202111388906A CN113975857A CN 113975857 A CN113975857 A CN 113975857A CN 202111388906 A CN202111388906 A CN 202111388906A CN 113975857 A CN113975857 A CN 113975857A
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- oil
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- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000011248 coating agent Substances 0.000 title claims abstract description 17
- 238000000576 coating method Methods 0.000 title claims abstract description 17
- 238000001465 metallisation Methods 0.000 title claims description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims 2
- 238000004581 coalescence Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 8
- 239000011104 metalized film Substances 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract description 2
- 208000005156 Dehydration Diseases 0.000 description 11
- 230000018044 dehydration Effects 0.000 description 11
- 238000006297 dehydration reaction Methods 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/562—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates
Abstract
The invention relates to the field of metalized coating, in particular to a water removal process of shielding oil for metalized coating, which comprises the following steps: (1) the oil inlet pump pumps the shielding oil to the filter, the shielding oil is filtered and then sent to the heater for heating, and the heated shielding oil enters the coalescer for primary water removal; (2) starting a vacuum pump, forming negative pressure in the vacuum chamber, spraying the shielding oil subjected to primary dewatering into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dewatering; (3) the oil liquid flowing downwards is discharged through an oil outlet pump, the water vapor flowing upwards enters a condenser to be condensed, and the condensed water flows into a water tank; the invention effectively prevents the excessive moisture in the shielding oil from vaporizing to oxidize the metal film surface when the film is evaporated by removing the water from the shielding oil, and simultaneously avoids the reduction of vacuum degree caused by excessive moisture in the evaporation process, thereby ensuring the quality of the metallized film.
Description
Technical Field
The invention relates to the technical field of metallization coating, in particular to a water removal process of shielding oil for metallization coating.
Background
The capacitor is used as an important energy storage electronic component and is increasingly widely applied. The metallized film capacitor is made by winding organic plastic film as medium and metallized film as electrode, the film used in the metallized film capacitor is polyethylene, polypropylene, polycarbonate, etc., besides the winding type, also the lamination type. Among them, the polyester film medium and the polypropylene film medium are most widely used. Shielding oil is needed in the production process of the metallized film.
The shielding oil contains certain moisture, and a part of the moisture is absorbed due to exposure to air in the using process. Excessive moisture in the shielding oil can cause the reduction of vacuum degree during film coating; moreover, trace amounts of moisture also cause premature oxidation of the metal film surface on the film, affecting the performance of the metallized film. Therefore, we propose a water removal process of shielding oil for metallization coating.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a water removal process of shielding oil for a metallized film coating, which overcomes the defects of the prior art, has reasonable design and compact structure, and effectively solves the problems mentioned in the background.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the water removing process of the shielding oil for the metalized coating comprises the following steps:
(1) the oil inlet pump pumps the shielding oil to the filter, the shielding oil is filtered and then sent to the heater for heating, and the heated shielding oil enters the coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, spraying the shielding oil subjected to primary dewatering into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dewatering;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
Preferably, in the step (1), the temperature of the heated shielding oil is 55-70 ℃.
Preferably, in step (1), the temperature of the heated shielding oil is 65 ℃.
Preferably, in the step (2), the vacuum degree is-0.70 to-0.85 bar.
Preferably, in step (2), the vacuum is-0.80 bar.
Preferably, the flow rate of the shielding oil is 10-30L/min.
The invention also provides a device for the water removal process of the shielding oil for the metallized coating, which comprises an oil inlet pump, a filter, a heater, a coalescer and a vacuum chamber which are sequentially connected, wherein the top end of the vacuum chamber is connected with a condenser, the bottom end of the vacuum chamber is provided with an oil outlet pump, the outlet end of the condenser is connected with a water tank, the condenser is provided with a vacuum pump, and a vacuum valve is arranged between the condenser and the vacuum pump.
Preferably, a hydrophilic coalescing filter element and a hydrophobic separating filter element are arranged in the coalescer.
(III) advantageous effects
The embodiment of the invention provides a water removal process of shielding oil for a metallized coating, which has the following beneficial effects:
according to the invention, by carrying out water removal treatment on the shielding oil, when a metal layer is evaporated on the film, the phenomenon that the metal film surface is oxidized due to vaporization of redundant moisture in the shielding oil is effectively prevented, and simultaneously, the reduction of vacuum degree caused by excessive moisture in evaporation is also avoided, so that the quality of the metalized film is ensured;
according to the invention, the coalescer is used for primary dewatering, most of water can be removed rapidly, secondary dewatering is carried out through vacuum treatment, secondary dewatering treatment is realized, and the dewatering effect on the shielding oil is good.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
In the figure: 1-filter, 2-heater, 3-coalescer, 4-coalescing filter element, 5-separating filter element, 6-vacuum chamber, 7-nozzle, 8-oil inlet pump, 81-oil outlet pump, 9-condenser, 10-vacuum pump, 11-water tank, 12-vacuum valve.
Detailed Description
The invention will be further illustrated with reference to the accompanying figure 1 and examples:
example 1
The water removing process of the shielding oil for the metalized coating comprises the following steps:
(1) pumping the shielding oil to a filter by an oil inlet pump, filtering, feeding the filtered shielding oil into a heater, heating to 55 ℃, and feeding the heated shielding oil into a coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, controlling the vacuum degree to be-0.70 bar, spraying the shield oil subjected to primary dehydration into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dehydration;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
The flow rate of the shielding oil is 10L/min.
Example 2
The water removing process of the shielding oil for the metalized coating comprises the following steps:
(1) pumping the shielding oil to a filter by an oil inlet pump, filtering, feeding the filtered shielding oil into a heater, heating to 70 ℃, and feeding the heated shielding oil into a coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, controlling the vacuum degree to be-0.85 bar, spraying the shield oil subjected to primary dehydration into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dehydration;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
The flow rate of the shielding oil is 30L/min.
Example 3
The water removing process of the shielding oil for the metalized coating comprises the following steps:
(1) pumping the shielding oil to a filter by an oil inlet pump, filtering, feeding the filtered shielding oil into a heater, heating to 65 ℃, and feeding the heated shielding oil into a coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, controlling the vacuum degree to be-0.80 bar, spraying the shield oil subjected to primary dehydration into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dehydration;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
The flow rate of the shielding oil is 15L/min.
Example 4
The water removing process of the shielding oil for the metalized coating comprises the following steps:
(1) pumping the shielding oil to a filter by an oil inlet pump, filtering, feeding the filtered shielding oil into a heater, heating to 65 ℃, and feeding the heated shielding oil into a coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, controlling the vacuum degree to be-0.80 bar, spraying the shield oil subjected to primary dehydration into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dehydration;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
The flow rate of the shielding oil is 20L/min.
Example 5
The water removing process of the shielding oil for the metalized coating comprises the following steps:
(1) pumping the shielding oil to a filter by an oil inlet pump, filtering, feeding the filtered shielding oil into a heater, heating to 55 ℃, and feeding the heated shielding oil into a coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, controlling the vacuum degree to be-0.80 bar, spraying the shield oil subjected to primary dehydration into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dehydration;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
The flow rate of the shielding oil is 15L/min.
Example 6
The utility model provides a device of water removal technology of shielding oil for metallized coating, the device is including the oil feed pump, filter, heater, coalescer and real empty room that connect gradually, and real empty room's top is connected with the condenser, and real empty room's bottom is provided with out the oil pump, and the exit end of condenser is connected with the water tank, and is provided with the vacuum pump on the condenser, installs the vacuum valve between condenser and the vacuum pump. The coalescer is internally provided with a hydrophilic coalescing filter element and a hydrophobic separating filter element.
Test data
The test method comprises the following steps: the device in example 6 is used for detecting the water content of the shielding oil after secondary water removal in examples 3-5, and the initial water content of the shielding oil is regulated to be 300 ppm. Specific detection results are shown in table 1.
TABLE 1 dehydration data
| Group of | Temperature (. degree.C.) | Flow (L/min) | Water content (ppm) | Water removal efficiency (%) |
| Example 3 | 65 | 15 | 60.5 | 79.8 |
| Example 4 | 65 | 20 | 78.7 | 73.8 |
| Example 5 | 55 | 15 | 122.4 | 59.2 |
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The water removal process of the shielding oil for the metallized coating is characterized by comprising the following steps of:
(1) the oil inlet pump pumps the shielding oil to the filter, the shielding oil is filtered and then sent to the heater for heating, and the heated shielding oil enters the coalescer for primary water removal;
(2) starting a vacuum pump, forming negative pressure in the vacuum chamber, spraying the shielding oil subjected to primary dewatering into the vacuum chamber from a nozzle, and enabling the oil to flow downwards and the water vapor to flow upwards to realize secondary dewatering;
(3) the oil liquid flowing down is discharged through an oil outlet pump, the water vapor flowing up enters a condenser to be condensed, and the condensed water flows into a water tank.
2. The process of claim 1, wherein the step of removing water from the shielding oil for metallization comprises: in the step (1), the temperature of the heated shielding oil is 55-70 ℃.
3. The process of claim 2, wherein the step of removing water from the shielding oil for metallization comprises: in the step (1), the temperature of the heated shielding oil is 65 ℃.
4. The process of claim 1, wherein the step of removing water from the shielding oil for metallization comprises: in the step (2), the vacuum degree is-0.70 to-0.85 bar.
5. The process of claim 4, wherein the step of removing water from the shielding oil for metallization comprises: in the step (2), the vacuum degree is-0.80 bar.
6. The process of claim 1, wherein the step of removing water from the shielding oil for metallization comprises: the flow rate of the shielding oil is 10-30L/min.
7. The apparatus for removing water from shielding oil for metallic plating according to claim 1, wherein: the device is including the oil feed pump, filter, heater, coalescer and the real empty room that connect gradually, real empty room's top is connected with the condenser, and real empty room's bottom is provided with out the oil pump, the exit end of condenser is connected with the water tank, and is provided with the vacuum pump on the condenser, install the vacuum valve between condenser and the vacuum pump.
8. The apparatus for removing water from shielding oil for metallic plating according to claim 7, wherein: and a hydrophilic coalescence filter element and a hydrophobic separation filter element are arranged in the coalescer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388906.1A CN113975857A (en) | 2021-11-22 | 2021-11-22 | Water removal process of shielding oil for metallization coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388906.1A CN113975857A (en) | 2021-11-22 | 2021-11-22 | Water removal process of shielding oil for metallization coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113975857A true CN113975857A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111388906.1A Pending CN113975857A (en) | 2021-11-22 | 2021-11-22 | Water removal process of shielding oil for metallization coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323328A (en) * | 2022-09-09 | 2022-11-11 | 浙江七星电子股份有限公司 | Preparation process of ultrathin metallized film for capacitor |
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Application publication date: 20220128 |