CN107293403A - A kind of thin film capacitor - Google Patents
A kind of thin film capacitor Download PDFInfo
- Publication number
- CN107293403A CN107293403A CN201710324477.9A CN201710324477A CN107293403A CN 107293403 A CN107293403 A CN 107293403A CN 201710324477 A CN201710324477 A CN 201710324477A CN 107293403 A CN107293403 A CN 107293403A
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- Prior art keywords
- film capacitor
- pair
- thin film
- electrode layer
- thin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/008—Selection of materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
Abstract
The invention discloses a kind of thin film capacitor, the film capacitor element, it has thin dielectric film and across the thin dielectric film and mutually opposing a pair of electrode layers, and is connected respectively to a pair of end electrodes of a pair of electrode layers, forms the two ends of the film capacitor element；The thin dielectric film is the composite membrane being made up of sericite in powder and acrylic resin；The pair of electrode layer includes aluminium as main component, and further comprises BaSnO3 ceramic particles and magnesium atom.The present invention with acrylic resin be combined by using the sericite in powder of certain particle size prepares composite membrane, improve the stretch resistance energy of polypropylene film, and improve its heat-resisting ability, reduce loss factor and improve more than 40%, remarkable in economical benefits compared to the ordinary capacitor polypropylene film life-span.
Description
Technical field
The invention belongs to electronic component technology field, and in particular to a kind of thin film capacitor.
Background technology
Thin film capacitor is to work as electrode with metal foil, by itself and poly- ethyl ester, polypropylene, the modeling such as polystyrene or makrolon
Expect film, it is overlapping from two ends after, be wound into cylindrical shape construction capacitor.And be hereinafter referred to as according to the species of plastic sheeting
Poly- ethyl ester electric capacity（Also known as Mylar electric capacity）, polypropylene capactive（Also known as PP electric capacity）, polystyrene electric capacity（Also known as PS electric capacity）With it is poly-
Carbonic acid electric capacity.The characteristic of polypropylene (PP) electric capacity and polystyrene (PS) electric capacity is the most notable, electric capacity made from polypropylene film
Device is so that its percent thermal shrinkage is low, performance stabilization, high temperature resistant, high pressure resistant, the remarkable advantage such as prevents from puncturing so that polypropylene film is made
Capacitor use scope it is more and more wider.Capacitor core is the heart of capacitor, therefore capacitor manufacture fuse material is necessary
With high frequency tolerant, high temperature resistant, a kind of macromolecule polypropylene film that can bear heavy current impact makees medium, just can guarantee that complete machine is long-term
Stably work, however existing thin film capacitor under the conditions of high frequency or high impulse in use, passing through the pulse of capacitor electricity
Stream can make capacitor self-heating and temperature rise, cause the problems such as increase of self-healing point, pressure-resistant reduction.
The content of the invention
The purpose of the present invention is that there is provided a kind of thin film capacitor the problem of being directed to existing.
The present invention is achieved by the following technical solutions：
A kind of thin film capacitor, the film capacitor element, its there is thin dielectric film and across the thin dielectric film and
Mutually opposing a pair of electrode layers, and a pair of end electrodes of a pair of electrode layers are connected respectively to, form the thin film capacitor
The two ends of element；
The thin dielectric film is the composite membrane being made up of sericite in powder and acrylic resin；
The pair of electrode layer includes aluminium as main component, and further comprises BaSnO3Ceramic particle and magnesium atom.
Further, the compound membrane preparation method is：Sericite in powder is used into maleic acid solution immersion 1.5 hours, so
After filter, acrylic resin and sericite in powder, the acrylic acid of drying are pressed 80 to constant weight by clear water cleaning, drying：1.2：0.1
Mass ratio, which is added in high-speed mixer, mixes 30min, is then added to after mixing in extruder, and extruding pelletization is mixed
Particle, extruder temperature is set as：One 188 DEG C of area, 193 DEG C of 2nd area, 202 DEG C of 3rd area, 215 DEG C of 4th area, 204 DEG C of 5th area；Then
Hybrid particles are added in plastics film balance, composite membrane is obtained.
Further, the sericite in powder granularity is 850 mesh.
Further, the maleic acid solution mass fraction is 2.36%.
Further, the composite film thickness is 0.88-0.90 μm.
Further, the pair of electrode layer is comprising aluminium as main component, and aluminium mass fraction is 93- in electrode layer
95%。
Further, the BaSnO3Ceramic particle is 0.22-0.25 μm.
Further, the BaSnO3Ceramic particle mass fraction in electrode layer is 0.16-18%.
Further, magnesium atom mass fraction in electrode layer is 1.2-1.4%.
The present invention has advantages below compared with prior art：Sericite in powder and poly- third of the invention by using certain particle size
Olefine resin, which be combined, prepares composite membrane, improves the stretch resistance energy of polypropylene film, and improves its heat-resisting ability, drops
Low loss factor improves more than 40% compared to the ordinary capacitor polypropylene film life-span, and remarkable in economical benefits can be one
Determine to improve the scope of thin-film capacitor in degree, and can improve leak resistance resistance, the anti-breakdown performance of enhanced film electric capacity,
And then the service life of capacitor can be improved, by adding a certain amount of BaSnO in aluminum electrode layer3Ceramic particle and magnesium
Atom, can improve the electrical property of electrode, reduce leakage current.
Embodiment
Embodiment 1
A kind of thin film capacitor, the film capacitor element, its there is thin dielectric film and across the thin dielectric film and
Mutually opposing a pair of electrode layers, and a pair of end electrodes of a pair of electrode layers are connected respectively to, form the thin film capacitor
The two ends of element；
The thin dielectric film is the composite membrane being made up of sericite in powder and acrylic resin；
The pair of electrode layer includes aluminium as main component, and further comprises BaSnO3Ceramic particle and magnesium atom.
The compound membrane preparation method is：Sericite in powder is soaked 1.5 hours using maleic acid solution, then filtered, clearly
Water is cleaned, drying to constant weight, and acrylic resin and sericite in powder, the acrylic acid of drying are pressed into 80：1.2：0.1 mass ratio adds
It is added in high-speed mixer and mixes 30min, be then added to after mixing in extruder, extruding pelletization obtains hybrid particles, extruder
Temperature is set as：One 188 DEG C of area, 193 DEG C of 2nd area, 202 DEG C of 3rd area, 215 DEG C of 4th area, 204 DEG C of 5th area；Then hybrid particles are added
It is added in plastics film balance, obtains composite membrane.
The sericite in powder granularity is 850 mesh.
The maleic acid solution mass fraction is 2.36%.
The composite film thickness is 0.88 μm.
The pair of electrode layer is comprising aluminium as main component, and aluminium mass fraction is 93% in electrode layer.
The BaSnO3Ceramic particle is 0.22 μm.
The BaSnO3Ceramic particle mass fraction in electrode layer is 0.16%.
Magnesium atom mass fraction in electrode layer is 1.2%.
Embodiment 2
A kind of thin film capacitor, the film capacitor element, its there is thin dielectric film and across the thin dielectric film and
Mutually opposing a pair of electrode layers, and a pair of end electrodes of a pair of electrode layers are connected respectively to, form the thin film capacitor
The two ends of element；
The thin dielectric film is the composite membrane being made up of sericite in powder and acrylic resin；
The pair of electrode layer includes aluminium as main component, and further comprises BaSnO3Ceramic particle and magnesium atom.
The compound membrane preparation method is：Sericite in powder is soaked 1.5 hours using maleic acid solution, then filtered, clearly
Water is cleaned, drying to constant weight, and acrylic resin and sericite in powder, the acrylic acid of drying are pressed into 80：1.2：0.1 mass ratio adds
It is added in high-speed mixer and mixes 30min, be then added to after mixing in extruder, extruding pelletization obtains hybrid particles, extruder
Temperature is set as：One 188 DEG C of area, 193 DEG C of 2nd area, 202 DEG C of 3rd area, 215 DEG C of 4th area, 204 DEG C of 5th area；Then hybrid particles are added
It is added in plastics film balance, obtains composite membrane.
The sericite in powder granularity is 850 mesh.
The maleic acid solution mass fraction is 2.36%.
The composite film thickness is 0.90 μm.
The pair of electrode layer is comprising aluminium as main component, and aluminium mass fraction is 95% in electrode layer.
The BaSnO3Ceramic particle is 0.25 μm.
The BaSnO3Ceramic particle mass fraction in electrode layer is 18%.
Magnesium atom mass fraction in electrode layer is 1.4%.
Embodiment 3
A kind of thin film capacitor, the film capacitor element, its there is thin dielectric film and across the thin dielectric film and
Mutually opposing a pair of electrode layers, and a pair of end electrodes of a pair of electrode layers are connected respectively to, form the thin film capacitor
The two ends of element；
The thin dielectric film is the composite membrane being made up of sericite in powder and acrylic resin；
The pair of electrode layer includes aluminium as main component, and further comprises BaSnO3Ceramic particle and magnesium atom.
The compound membrane preparation method is：Sericite in powder is soaked 1.5 hours using maleic acid solution, then filtered, clearly
Water is cleaned, drying to constant weight, and acrylic resin and sericite in powder, the acrylic acid of drying are pressed into 80：1.2：0.1 mass ratio adds
It is added in high-speed mixer and mixes 30min, be then added to after mixing in extruder, extruding pelletization obtains hybrid particles, extruder
Temperature is set as：One 188 DEG C of area, 193 DEG C of 2nd area, 202 DEG C of 3rd area, 215 DEG C of 4th area, 204 DEG C of 5th area；Then hybrid particles are added
It is added in plastics film balance, obtains composite membrane.
The sericite in powder granularity is 850 mesh.
The maleic acid solution mass fraction is 2.36%.
The composite film thickness is 0.89 μm.
The pair of electrode layer is comprising aluminium as main component, and aluminium mass fraction is 94% in electrode layer.
The BaSnO3Ceramic particle is 0.24 μm.
The BaSnO3Ceramic particle mass fraction in electrode layer is 0.17%.
Magnesium atom mass fraction in electrode layer is 1.3%.
Experiment：By GB/T 10003-2008《General applications bidirectional stretching polypropylene film》Tensile strength is detected, according to
GB/T 1040.3-2006《The measure of plastic tensile performance》Regulation carry out, using long 150mm, width 15mm rectangle examination
Sample, fixture spacing is 100mm, and test speed is（250±25）Mm/min, to composite membrane in embodiment and the polypropylene of same specification
Film is tested：
Table 1
| Thickness μm | Transverse tensile strength MPa | Longitudinal tensile strength MPa | |
| Embodiment 1 | 0.88 | 42.83 | 36.78 |
| Embodiment 2 | 0.90 | 42.88 | 36.83 |
| Embodiment 3 | 0.89 | 42.85 | 36.80 |
| Polypropylene film | 0.88 | 30.53 | 23.42 |
As can be seen from Table 1, the composite membrane tensile property rubber ordinary polypropylene film that prepared by the present invention is significantly improved.
Electric capacity prepared by embodiment detects the chance of breakdown under different voltages on dielectric strength tester（%）：
Chance of breakdown under the different voltages of table 2（%）
| 10V | 20V | 30V | 40V | |
| Embodiment 1 | 2 | 3 | 5 | 7 |
| Embodiment 2 | 2 | 4 | 6 | 8 |
| Embodiment 3 | 2 | 3 | 5 | 8 |
| Control group 1 | 15 | 28 | 40 | 65 |
| Control group 2 | 5 | 8 | 12 | 18 |
Control group 1：It is only that composite membrane is replaced with into Plain PE film with the difference of embodiment 1, thickness is 0.88 μm；
Control group 2：It is only to improve acrylic resin in composite membrane and sericite in powder mass ratio to 80 with the difference of embodiment 1：2,
Remaining condition is constant；
As can be seen from Table 2, the composite membrane good insulation preformance that prepared by the present invention, anti-breakdown performance is strong, changes adding for sericite in powder
Plus the insulating properties and anti-breakdown performance of composite membrane are reduced than regular meeting.
Claims (9)
1. a kind of thin film capacitor, it is characterised in that the film capacitor element, it has thin dielectric film and across institute
State thin dielectric film and mutually opposing a pair of electrode layers, and be connected respectively to a pair of end electrodes of a pair of electrode layers, formed
The two ends of the film capacitor element；
The thin dielectric film is the composite membrane being made up of sericite in powder and acrylic resin；
The pair of electrode layer includes aluminium as main component, and further comprises BaSnO3Ceramic particle and magnesium atom.
2. a kind of thin film capacitor according to claim 1, it is characterised in that the compound membrane preparation method is：By thin,tough silk
Mica powder is soaked 1.5 hours using maleic acid solution, is then filtered, clear water cleaning, drying to constant weight, by acrylic resin with drying
Dry sericite in powder, acrylic acid press 80：1.2：0.1 mass ratio, which is added in high-speed mixer, mixes 30min, after mixing again
It is added in extruder, extruding pelletization, obtains hybrid particles, extruder temperature is set as：One 188 DEG C of area, 193 DEG C of 2nd area, three
202 DEG C of area, 215 DEG C of 4th area, 204 DEG C of 5th area；Then hybrid particles are added in plastics film balance, obtain composite membrane.
3. a kind of thin film capacitor according to claim 2, it is characterised in that the sericite in powder granularity is 850 mesh.
4. a kind of thin film capacitor according to claim 2, it is characterised in that the maleic acid solution mass fraction is
2.36%。
5. a kind of thin film capacitor according to claim 2, it is characterised in that the composite film thickness is 0.88-0.90 μ
m。
6. a kind of thin film capacitor according to claim 1, it is characterised in that the pair of electrode layer includes aluminium conduct
Aluminium mass fraction is 93-95% in main component, electrode layer.
7. a kind of thin film capacitor according to claim 1, it is characterised in that the BaSnO3Ceramic particle is 0.22-
0.25μm。
8. a kind of thin film capacitor according to claim 2, it is characterised in that the BaSnO3Ceramic particle is in electrode layer
Middle mass fraction is 0.16-18%.
9. a kind of thin film capacitor according to claim 1, it is characterised in that magnesium atom quality point in electrode layer
Number is 1.2-1.4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324477.9A CN107293403A (en) | 2017-05-10 | 2017-05-10 | A kind of thin film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324477.9A CN107293403A (en) | 2017-05-10 | 2017-05-10 | A kind of thin film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107293403A true CN107293403A (en) | 2017-10-24 |
Family
ID=60095074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710324477.9A Pending CN107293403A (en) | 2017-05-10 | 2017-05-10 | A kind of thin film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107293403A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201421778Y (en) * | 2009-06-18 | 2010-03-10 | 扬州日精电子有限公司 | Metallized film large-capacity capacitor |
| WO2013105552A1 (en) * | 2012-01-11 | 2013-07-18 | 王子ホールディングス株式会社 | Biaxially stretched polypropylene film for capacitors |
| US20130288000A1 (en) * | 2011-01-19 | 2013-10-31 | Oji Holdings Corporation | Polypropylene film for capacitor |
| CN103434110A (en) * | 2013-08-30 | 2013-12-11 | 华威聚酰亚胺有限责任公司 | High-performance polypropylene film for heavy-current capacitors and manufacturing method thereof |
| CN103930960A (en) * | 2011-11-11 | 2014-07-16 | 松下电器产业株式会社 | Film capacitor |
| CN105655128A (en) * | 2016-04-11 | 2016-06-08 | 郑州航空工业管理学院 | Ultrathin and high-temperature-resistant metallized polypropylene film capacitor |
| CN106504896A (en) * | 2016-11-16 | 2017-03-15 | 安徽飞达电气科技有限公司 | A kind of anti-interference capacitance-resistance module of metallized polypropylene film |
-
2017
- 2017-05-10 CN CN201710324477.9A patent/CN107293403A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201421778Y (en) * | 2009-06-18 | 2010-03-10 | 扬州日精电子有限公司 | Metallized film large-capacity capacitor |
| US20130288000A1 (en) * | 2011-01-19 | 2013-10-31 | Oji Holdings Corporation | Polypropylene film for capacitor |
| CN103930960A (en) * | 2011-11-11 | 2014-07-16 | 松下电器产业株式会社 | Film capacitor |
| WO2013105552A1 (en) * | 2012-01-11 | 2013-07-18 | 王子ホールディングス株式会社 | Biaxially stretched polypropylene film for capacitors |
| CN103434110A (en) * | 2013-08-30 | 2013-12-11 | 华威聚酰亚胺有限责任公司 | High-performance polypropylene film for heavy-current capacitors and manufacturing method thereof |
| CN105655128A (en) * | 2016-04-11 | 2016-06-08 | 郑州航空工业管理学院 | Ultrathin and high-temperature-resistant metallized polypropylene film capacitor |
| CN106504896A (en) * | 2016-11-16 | 2017-03-15 | 安徽飞达电气科技有限公司 | A kind of anti-interference capacitance-resistance module of metallized polypropylene film |
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| PB01 | Publication | ||
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Application publication date: 20171024 |