CN202025648U - Super-high sheet resistance metalized film - Google Patents
Super-high sheet resistance metalized film Download PDFInfo
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- CN202025648U CN202025648U CN2011201003850U CN201120100385U CN202025648U CN 202025648 U CN202025648 U CN 202025648U CN 2011201003850 U CN2011201003850 U CN 2011201003850U CN 201120100385 U CN201120100385 U CN 201120100385U CN 202025648 U CN202025648 U CN 202025648U
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- metalized film
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Abstract
A super-high sheet resistance metalized film relates to a metalized film, which comprises a base material where metal cladding is arranged and is characterized in that the metal cladding comprises an aluminum layer arranged on the upper surface of the base material and a zinc layer coated on the upper surface of the aluminum layer by vapor deposition. The zinc layer grows thicker from two sides to the center in the thickness direction of the base material. A unique structure is adopted, and the metal cladding is divided into three areas, i.e. a thickening area, a sheet resistance gradual-change area and a high sheet resistance area. A normal aluminum-zinc metalized film is only divided into a thickening area and a non-thickening area. The problem that a compromise between ampacity and self-healing of the normal aluminum-zinc metalized film or an edge-thickening aluminum-zinc metalized film can not be reached is resolved, and the super-high sheet resistance metalized film is strong in oxidation-corrosion resistant capacity, prone to metal spraying, good in self-sealing and conductivity and smaller in volume.
Description
Technical field
The utility model relates to a kind of metalized film, is specifically related to the square resistance metallized film of a kind of superelevation.
Background technology
The thickened metalized film of producing in zinc-aluminium edge is divided into resistance of thickened area side and the resistance of non-thickened area side both at home and abroad, and the resistance of thickened area side is less, is 2～4 Ω/, and the resistance of non-thickened area side is 7.5 Ω/.The electric current distribution characteristics of capacitor are the thickened area edges to staying place, the limit current density trend that tapers off, and that is to say that thickened area edge current density is big, stay limit edge current density little.When fault being arranged near the thickened area of metalized film, because current density is bigger herein, soon can self-healing; And when fault being arranged near staying of metalized film near the limit, because current density is less, self-healing rapidly, the heat that electric arc produces can cause this adjacent layer dielectric heat, dielectric strength descends, thereby puncture, should place attempt self-healing and can't self-healing this moment, will cause the attempt self-healing and the puncture of contiguous multilayer dielectricity like this, increase because of puncture makes electric current, self-healing reduces electric current, and electric current can acutely not increase in longer a period of time as a result, and self-healing will make the capacitor case bulging with a large amount of gases that puncture generation continuously, splits cruelly up to shell takes place.
The utility model content
Technical problem to be solved in the utility model is to provide the superelevation that a kind of oxidation resistance is good, self-healing ability is strong square resistance metallized film.
Technical problem to be solved in the utility model realizes by the following technical solutions,
The square resistance metallized film of superelevation, comprise base material, described base material upwards is provided with the coat of metal, it is characterized in that: the described coat of metal comprises the aluminium lamination that is arranged on the base material upper surface and the evaporation zinc layer at the aluminium lamination upper surface, and described zinc layer is thickeied by two side direction centers gradually along the Width of base material.
The described coat of metal is divided into thickened area successively, is just hindered transition region and high square resistance district by middle mind-set both sides along the Width of base material, and the described coat of metal is thickeied to the thickened area of centre gradually in the high square resistance district of the thickness that just hinders the transition region by both sides.
Described base material is a thin polymer film, and its thickness is 0.5 μ m～20 μ m.
The coat of metal of described thickened area is aluminium lamination and zinc layer, and the coat of metal of described side's resistance transition region is aluminium lamination and zinc layer, and the coat of metal in described high square resistance district is an aluminium lamination.
Side's resistance of described thickened area is 6M Ω/, and side's resistance of described side's resistance transition region is 10～20M Ω/, and side's resistance in described high square resistance district is 50M Ω/.
The present invention is made up of thickened area, resistance transition region, side and high square resistance district, its side's resistiveization is toward thickened area step-down slowly by the high square resistance district, the high square resistance district coat of metal is made up of fine aluminium, becomes aluminium zinc to resistance transition region, side and forms, and becomes very thick to the thickened area coat of metal.Simultaneously, produce the capacitor of same capability, guaranteeing under the withstand voltage constant situation, compare with common aluminum zinc metal film, with super high square resistance aluminum zinc metal film is the capacitor of medium, can dwindle the capacitor volume and reduce production costs by suitably reduce dielectric thickness (media area also reduces) thereupon.
The beneficial effects of the utility model are: the utility model adopts particular structure, the coat of metal is divided into three zones: thickened area, resistance transition region, side and high square resistance district, and conventional aluminium zinc metalized film only is divided into thickened area and two zones of non-thickened area, the utility model has overcome the contradiction that conventional aluminium zinc metalized film and edge thickening aluminum zinc metal film ampacity and self-healing property can't be taken into account simultaneously, and the antioxidant anticorrosive ability is strong, easily good, the good conductivity of metal spraying, self-healing property, capacity attenuation are little.
Description of drawings
Fig. 1 is the utility model structure cut-away view.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, the square resistance metallized film of a kind of superelevation comprises base material 1, and base material 1 is a thin polymer film, and its thickness is 0.5 μ m～20 μ m; Base material 1 upwards is provided with the coat of metal, and the coat of metal comprises the aluminium lamination 2 that is arranged on base material 1 upper surface and the evaporation zinc layer 3 at aluminium lamination 2 upper surfaces, and zinc layer 3 is thickeied by two side direction centers gradually along the Width of base material 1.
As shown in Figure 1, the coat of metal is divided into thickened area a successively, is just hindered transition region b and high square resistance district c by middle mind-set both sides along the Width of base material 1, and the coat of metal is thickeied to the thickened area a of centre gradually at the high square resistance district c of the thickness that just hinders transition region b by both sides.The coat of metal of thickened area a is aluminium lamination 2 and zinc layer 3, and side's resistance of thickened area a is 6M Ω/; The coat of metal of side's resistance transition region b is aluminium lamination 2 and zinc layer 3, and side's resistance of side's resistance transition region b is 10～20M Ω/; The coat of metal of high square resistance district c is an aluminium lamination 2, and side's resistance of high square resistance district c is 50M Ω/.The ampacity of metalized film successively decreases and successively decreases along with current density in capacitor, because adjacent layer is in the metal layer thickness difference of same position, if when having fault to produce self-healing, the self-healing of high square resistance place coat of metal elder generation, the formed white space of self-healing is little behind the low square resistance place coat of metal, resistance variations is little, can avoid forming higher temperature rise.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. square resistance metallized film of superelevation, comprise base material, base material upwards is provided with the coat of metal, it is characterized in that: the described coat of metal comprises the aluminium lamination that is arranged on the base material upper surface and the evaporation zinc layer at the aluminium lamination upper surface, and described zinc layer is thickeied by two side direction centers gradually along the Width of base material.
2. the square resistance metallized film of superelevation according to claim 1, it is characterized in that: the described coat of metal is divided into thickened area successively, is just hindered transition region and high square resistance district by middle mind-set both sides along the Width of base material, and the described coat of metal is thickeied to the thickened area of centre gradually in the high square resistance district of the thickness that just hinders the transition region by both sides.
3. the square resistance metallized film of superelevation according to claim 1 is characterized in that: described base material is a thin polymer film, and its thickness is 0.5 μ m～20 μ m.
4. the square resistance metallized film of superelevation according to claim 2 is characterized in that: the coat of metal of described thickened area is aluminium lamination and zinc layer, and the coat of metal of described side's resistance transition region is aluminium lamination and zinc layer, and the coat of metal in described high square resistance district is an aluminium lamination.
5. according to claim 2 or the square resistance metallized film of 3 described superelevation, it is characterized in that: side's resistance of described thickened area is 6M Ω/, and side's resistance of described side's resistance transition region is 10～20M Ω/, and side's resistance in described high square resistance district is 50M Ω/.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201003850U CN202025648U (en) | 2011-04-07 | 2011-04-07 | Super-high sheet resistance metalized film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201003850U CN202025648U (en) | 2011-04-07 | 2011-04-07 | Super-high sheet resistance metalized film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202025648U true CN202025648U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201003850U Expired - Fee Related CN202025648U (en) | 2011-04-07 | 2011-04-07 | Super-high sheet resistance metalized film |
Country Status (1)
| Country | Link |
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| CN (1) | CN202025648U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878348A (en) * | 2015-04-21 | 2015-09-02 | 浙江七星电容器有限公司 | Ultra-thin metallized capacitance evaporated film and preparation process thereof |
| CN105428063A (en) * | 2015-11-18 | 2016-03-23 | 安徽航睿电子科技有限公司 | Netty anti-explosion gradual-change sheet resistance metalized safety film for capacitor |
| CN109585171A (en) * | 2018-11-28 | 2019-04-05 | 铜陵市新洲电子科技有限责任公司 | A kind of capacitor bearing higher harmonic current |
-
2011
- 2011-04-07 CN CN2011201003850U patent/CN202025648U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878348A (en) * | 2015-04-21 | 2015-09-02 | 浙江七星电容器有限公司 | Ultra-thin metallized capacitance evaporated film and preparation process thereof |
| CN105428063A (en) * | 2015-11-18 | 2016-03-23 | 安徽航睿电子科技有限公司 | Netty anti-explosion gradual-change sheet resistance metalized safety film for capacitor |
| CN109585171A (en) * | 2018-11-28 | 2019-04-05 | 铜陵市新洲电子科技有限责任公司 | A kind of capacitor bearing higher harmonic current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20120407 |