CN2059267U - Small precision metallized polypropylene condenser - Google Patents
Small precision metallized polypropylene condenser Download PDFInfo
- Publication number
- CN2059267U CN2059267U CN 89213247 CN89213247U CN2059267U CN 2059267 U CN2059267 U CN 2059267U CN 89213247 CN89213247 CN 89213247 CN 89213247 U CN89213247 U CN 89213247U CN 2059267 U CN2059267 U CN 2059267U
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- precision
- capacitor
- polypropylene
- condenser
- small
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- Expired - Lifetime
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Abstract
The utility model relates to a small precision metalized polypropylene condenser taking a polypropylene film which takes a novel insulating material as a medium. The surface of the medium is evaporated with a thin aluminium metalized film as a capacitor for producing pole plates. The small precision metalized polypropylene condenser has the advantages of stable performance and small volume besides the same advantages with a precision polypropylene condenser such as favorable electrical property namely high capacity precision, favorable stability, small negative temperature coefficient, high insulation resistance and small loss tangent. The small precision metalized polypropylene condenser can be used for replacing traditional foil precision polystyrene condensers with large volume, the precision metalized polypropylene condenser can be applied to modern communication equipment and precision instruments, and the effects of reducing the volume of the whole condenser, enhancing performances and reducing costs can be obtained.
Description
The utility model precision metallic polypropylene capacitor relates to a kind of electronic component, is mainly used in modern communication equipment, precision instrument and other electronic circuits of having relatively high expectations.
Be widely used at present the accurate organic film condenser in modern communication and the precision instrument both at home and abroad, mainly be to make medium with polystyrene film, aluminum metallic foil is made accurate polystyrene capacitor as pole plate, and this capacitor has advantages such as insulation resistance height, absorption coefficient are little, capacity precision height, good stability, loss is little, negative temperature coefficient is little.
Because the lack of homogeneity of polystyrene film thickness, the fault of existence is quite a few, and particularly dielectric thickness is thin more, and the danger that fault exists is big more, and in order to eliminate the danger of fault, when the design capacitance device, the thickness of medium is generally obtained bigger, for example designs 100V
DC～500V
DCThe accurate polystyrene capacitor of operating voltage, dielectric thickness are generally got 20～60 microns, and therefore when making high voltage, jumbo paper tinsel formula precision polystyrene capacitor, its volume is just big especially, brings difficulty to final assembly.In order to solve the volume problem of large value capacitor in complete system plant's circuit, the metalized paper capacitor that the complete system plant that has once made with polarizable medium, or dacron metallized capacitor is the precision capacitor that main body is joined the polystyrene capacitor formation small size of one or several low capacity, this condenser loss is big, insulation resistance is low, capacity stability is poor, even initial performance is exempted from passable by force behind the last machine, but passing in time, the variation of temperature and time, electric capacitance change is big, and loss increases, and insulation resistance reduces.Thereby the complete machine quality is descended, even inoperable situation occurs.
The purpose of this utility model provides that a kind of volume is little, and insulation resistance is big, and negative temperature coefficient is little, withstand voltage height, and capacity is big, the precision metallic polypropylene capacitor of good stability.
The design of the utility model precision metallic polypropylene capacitor is plastic casing or the unidirectional lead-in wire of aluminium shell and two-way lead-out wire structure, by shell (1) by Fig. 1 and Fig. 2 explanation, epoxy resin composite (2), capacitor body (3), gilding layer (4), lead-out wire (5) constitutes.
This precision metallic polypropylene capacitor is to get the new material polypropylene film of 6～24 micron thickness as medium according to different operating voltages, the aluminum metallization film is made capacitor body as pole plate, and its production process is technological processes such as polypropylene film metallization → cutting metal polypropylene screen → wound capacitor fuse → heat treatment fuse → fuse termination metal spraying → capacitor precision adjustment → welding lead-out wire → infusion epoxy resin compound → ageing, electrical measurement, printing sign.For example producing a required precision is ± 0.5%, and operating voltage is 100V
DC, capacitance is the precision metallic polypropylene capacitor of 1050000PF, and the structure of pressing Fig. 1 is through above-mentioned technological process, and the actual precision that reaches of capacitor is+0.4%, operating voltage 100V
DC, capacitance is 1054200PF, product shape is of a size of L(mm) * B(mm) * H(mm)=30 * 13 * 14.
The using polypropylene film is made medium can produce serial precision metallic polypropylene capacitor, can produce operating voltage at 100～1600V
DC, working temperature is at-40-+70 ℃, and capacitance is at 10000～1500000PF, and the capacitance precision can reach ± 0.5%, ± 1%, ± 2%, ± 5% 4 grade, loss angle tangent≤10 * 10
-4, insulation resistance is worked as C
RDuring≤0.33uF 〉=and 25000M Ω, work as C
RDuring＞0.33uF＞and 7500S, temperature coefficient is in-(200 ± 80) * 10
-6/ ℃ scope, can make the size of series of products be no more than 1, the bias tyre structure is at L(mm) * B(mm) * H(mm)=20 * 8 * 12～30 * 13 * 21,2, cylindrical structure is at D(mm) * L(mm)=8 * 18～16 * 30 range product.
Polypropylene film is a kind of novel medium that occurs in recent years, this medium production is easy, output is big, cheap, performance good, but is used to make precision capacitor non-avaible report still.Because polypropylene film is the same with polystyrene film, belong to a kind of apolar medium together, make capacitor and all have the basic characteristics that negative temperature coefficient is little, loss angle tangent is little, insulation resistance is high, high frequency performance is good, yet the uniformity of polypropylene film is better than polystyrene film, the dielectric strength height, temperature tolerance is good, and when the same operating voltage of design, the thickness of the comparable polystyrene film of dielectric thickness reduces 2～6 times.Therefore under the condition of same capability and operating voltage, the volume of the volume ratio polystyrene capacitor of single metalized polypropylene condenser is little 3～5 times.And also improves on insulation resistance to some extent, owing to adopt the new material polypropylene film as medium, has overcome polystyrene film and has made the shortcoming that medium is produced capacitor, thereby reduced volume, has guaranteed performance.Played the effect that replaces the accurate polystyrene capacitor of large volume.Be used for modern communication equipment and precision instrument and electronic circuit, can reduce machine volume, improve the complete machine performance, reduce the effect of complete machine cost.
Fig. 1, Fig. 2 are the structure charts of precision metallic polypropylene capacitor.
The embodiment of the utility model precision metallic polypropylene capacitor is: get the polypropylene film of 6～24 micron thickness according to different operating voltages, for example requiring operating voltage is 100V
DCThe time, then get 6 microns polypropylene film, evaporate one deck rafifinal with the high vacuum evaporation machine at dielectric surface, make one deck metallic electrode as thin as a wafer, then the double-layer metallization film is rolled into the capacitor body (as 85600PF ± 0.5%) of predetermined volumes precision on sutomatic winding machine, capacitor body is heat-treated under 100～120 ℃ the temperature in insulating box, the metal level of 0.6～0.8 millimeters thick is sprayed at the fuse two ends, adjust through the capacitance precision, the welding lead-out wire, epoxy sealing, ageing is printed sign through electrical quantity Ce Shi And again and is waited the seriation precision metallic polypropylene capacitor of producing bias tyre or two kinds of structures of column type on product.
Claims (4)
1, miniature precision metalized polypropylene condenser, make medium by organic film, aluminum metallic foil is made capacitor body as pole plate, and lead-out wire is formed, it is characterized in that adopting 6～24 microns of polypropylene films as medium, the aluminum metallization film is made pole plate, makes the precision capacitor of bias tyre or cylindrical structure, promptly by shell (1), epoxy resin composite (2), capacitor body (3), gilding layer (4), lead-out wire (5) constitutes.
2, capacitor according to claim 1 is characterized in that the bias tyre structure is unidirectional lead-out wire, and cylindrical structure is two-way lead-out wire.
3, capacitor according to claim 1, it is L(mm that the size that it is characterized in that precision metallic polypropylene capacitor series of products is no more than the bias tyre structure) * B(mm) * H(mm)=20 * 8 * 12～30 * 13 * 21, cylindrical structure is D(mm) * L(mm)=8 * 18～16 * 30.
4, capacitor according to claim 1, the range of capacity that it is characterized in that precision metallic polypropylene capacitor series of products is 10000～1500000PF, operating voltage is 100～1600V
DC
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213247 CN2059267U (en) | 1989-10-13 | 1989-10-13 | Small precision metallized polypropylene condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213247 CN2059267U (en) | 1989-10-13 | 1989-10-13 | Small precision metallized polypropylene condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2059267U true CN2059267U (en) | 1990-07-11 |
Family
ID=4869289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89213247 Expired - Lifetime CN2059267U (en) | 1989-10-13 | 1989-10-13 | Small precision metallized polypropylene condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2059267U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487177A (en) * | 2013-09-05 | 2014-01-01 | 华中科技大学 | Method and device for measuring metallized film capacitor interlayer pressure intensity |
| CN104299781A (en) * | 2014-10-23 | 2015-01-21 | 苏州华冲精密机械有限公司 | Capacitor with high hardness |
| CN109103019A (en) * | 2018-08-27 | 2018-12-28 | 浙江七星电容器有限公司 | The ultra-thin capacitor of MPBH high-frequency emission |
| CN115483025A (en) * | 2022-09-30 | 2022-12-16 | 安徽锐光电子科技有限公司 | Preparation process of mica sheet capacitor |
-
1989
- 1989-10-13 CN CN 89213247 patent/CN2059267U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487177A (en) * | 2013-09-05 | 2014-01-01 | 华中科技大学 | Method and device for measuring metallized film capacitor interlayer pressure intensity |
| CN103487177B (en) * | 2013-09-05 | 2015-07-08 | 华中科技大学 | Method and device for measuring metallized film capacitor interlayer pressure intensity |
| CN104299781A (en) * | 2014-10-23 | 2015-01-21 | 苏州华冲精密机械有限公司 | Capacitor with high hardness |
| CN109103019A (en) * | 2018-08-27 | 2018-12-28 | 浙江七星电容器有限公司 | The ultra-thin capacitor of MPBH high-frequency emission |
| CN115483025A (en) * | 2022-09-30 | 2022-12-16 | 安徽锐光电子科技有限公司 | Preparation process of mica sheet capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 19940214 Decision number of declaring invalidation: 426 |
|
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |