CN205959777U - High temperature resistant metallized film - Google Patents

Abstract

The utility model relates to a high temperature resistant metallized film, including the base film, the upper surface of base film is provided with the metal level, and the lower surface of base film is provided with thermal film, and the metal level includes and be provided with the isolation region between the adjacent metal area by a plurality of metal area, and the isolation region still is provided with the microfuse including indulging median and horizontal median between the adjacent metal area, and thermal film's inboard is provided with the heat dissipation area, and the heat dissipation area is including indulging heat dissipation area and horizontal heat dissipation area. High temperature resistant metallized film's self -healing performance is high, and the radiating effect is good, and high temperature resistance can be strong, prevents local firing or the punch -through of taking place, and security and life are high, satisfy the in -service use requirement, implement effectually.

Description

A kind of high-temperature resistant metal thin film

Technical field

This utility model is related to a kind of high-temperature resistant metal thin film, belongs to capacitor technology field.

Background technology

With the development and progress of electronic science and technology, the energy problem of 21 century is more and more noticeable, the whole world each All in energy-conservation on a grand scale, illuminating industry is exactly a part therein to industry, and according to incompletely statistics, electric consumption on lighting amount is very big, Thus energy-saving potential is huge, this provides business opportunity and challenge to the components and parts supplier of illuminating industry.Power capacitor industry is exactly it One of beneficiary, particularly disabled in electric filament lamp, inductance type ballast, with compact type energy-saving lamp, electronic ballasting In the case of device and forth generation lighting source or green light source LED fast development, research and development long-life, high power electronic product are to shine The new development trend of bright industry.Such product is mainly used in the electric ballast and LED of illumination market, market demand Ratio is larger, and risk is little, and rate of return on investment is big.

It is susceptible to, during common metal thin film spontaneous recovery, the phenomenon that multilayer dielectricity Continuous Breakdown causes extensive burn, its electricity Be not in big electric current inside container, produce high temperature；And, common metal thin film does not have special radiator structure, commonly The base material of metallized film is its poor thermal conductivity of plastic sheeting, causes common metal thin film radiating effect limited, using common The capacitor body that metallized film is wound into easy accumulation heat in the capacitor, along with capacitor body compact structure, interior Portion's heat distributes difficulty.The capacitor that common metal thin film is made ambient temperature be higher than 80 DEG C about when, metallized film Breakdown probability is occurred exponentially to rise, service life declines.

Utility model content

This utility model is in view of the shortcomings of the prior art, there is provided a kind of high-temperature resistant metal thin film, particular technique Scheme is as follows：

A kind of high-temperature resistant metal thin film, including basement membrane, the upper surface of described basement membrane is provided with metal level, the following table of basement membrane Face is provided with heat dissipation film, and described metal level includes multiple metal areas, metal area in the upper surface array distribution of basement membrane, adjacent gold Belong to and be provided with isolation area between area, isolation area includes vertical isolation strip and horizontal isolation strip, described vertical isolation strip is flat with the axis of basement membrane OK, horizontal isolation strip and vertical isolation strip are mutually perpendicular to, and are additionally provided with microfuze between adjacent metal area, adjacent metal area Between be electrically connected by microfuze；The inner side of described heat dissipation film is provided with heat-radiation belt, heat-radiation belt include vertical heat-radiation belt and Horizontal heat-radiation belt, described vertical heat-radiation belt is arranged on the underface of vertical isolation strip and vertical heat-radiation belt is parallel to each other with vertical isolation strip, described Horizontal heat-radiation belt is arranged on the underface of horizontal isolation strip and horizontal heat-radiation belt is parallel to each other with horizontal isolation strip.

As the improvement of technique scheme, the width of described vertical isolation strip is a, and the width of described horizontal isolation strip is b, institute The width stating vertical heat-radiation belt is c, c ＞ a；The width of described horizontal heat-radiation belt is d, d ＞ b.

As the improvement of technique scheme, the width of described heat dissipation film is equal to the width of basement membrane, described horizontal heat-radiation belt Length is less than the width of heat dissipation film.

High-temperature resistant metal thin film described in the utility model passes through to arrange heat dissipation film, and setting and isolation area on heat dissipation film Corresponding heat-radiation belt, it is to avoid metal area occurs Continuous Breakdown to cause the phenomenon of extensive burn, using this high-temperature resistant metal , it can be avoided that its internal generation high temperature, the operation in hot environment of this capacitor, even if most for the capacitor that thin film is made Microfuze is all fused by high temperature, is also not in overheated blast；The self-healing ability of described high-temperature resistant metal thin film Height, good heat dissipation effect, resistance to elevated temperatures is strong, prevents from locally calcination or punch-through, safety and high life, meets Actual operation requirements, implementation result is good.

Brief description

Fig. 1 is high-temperature resistant metal membrane structure schematic diagram described in the utility model；

Fig. 2 is metal-layer structure schematic diagram described in the utility model；

Fig. 3 is heat-dissipation film structure schematic diagram described in the utility model.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.

As shown in Fig. 1 ~ 3, described high-temperature resistant metal thin film, including basement membrane 10, the upper surface of described basement membrane 10 is provided with Metal level 20, the lower surface of basement membrane 10 is provided with heat dissipation film 30, and described metal level 20 includes multiple metal areas 21, and metal area 21 exists The upper surface array distribution of basement membrane 10, is provided with isolation area 22 between adjacent metal area 21, logical between adjacent metal area 21 Cross isolation area 22 to disconnect, isolation area 22 includes vertical isolation strip 221 and horizontal isolation strip 222, described vertical isolation strip 221 and basement membrane 10 Diameter parallel, horizontal isolation strip 222 is mutually perpendicular to vertical isolation strip 221, is additionally provided with mini-insurance between adjacent metal area 21 Silk 23, is electrically connected by microfuze 23 between adjacent metal area 21；The inner side of described heat dissipation film 30 is provided with radiating Band 31, heat-radiation belt 31 includes vertical heat-radiation belt 311 and horizontal heat-radiation belt 312, and described vertical heat-radiation belt 311 is arranged on vertical isolation strip 221 Immediately below and vertical heat-radiation belt 311 be parallel to each other with vertical isolation strip 221, described horizontal heat-radiation belt 312 is just being arranged on horizontal isolation strip 222 Lower section and horizontal heat-radiation belt 312 be parallel to each other with horizontal isolation strip 222.

Basement membrane 10 can be made using one of poly- ethyl ester, polypropylene, polystyrene, and metal area 21 can copper evaporation process be incited somebody to action Aluminum or zinc are plated in the upper surface of basement membrane 10.When using, electric current is entered described high-temperature resistant metal thin film by microfuze 23 Enter the metal area 21 at breakdown point place, current value reaches the moment of certain numerical value, metal area 21 generate heat produced energy make micro- Type electric fuse 23 fuses immediately, so that the metal area 21 that breakdown point is located totally is kept apart with described high-temperature resistant metal thin film, Prevent the big entrance breakdown point that shoves in time.Due to being made of aluminum or zinc, the radiating effect of metal area 21 is excellent for metal area 21 Good, the poor radiation of basement membrane 10, and the presence of isolation area 22 makes the upper surface of basement membrane 10 radiate to there is tomography so that isolation area Heat is easily accumulated on 22；Because vertical heat-radiation belt 311 is relative in the position of basement membrane 10 with vertical isolation strip 221 in the position of basement membrane 10 Should, horizontal heat-radiation belt 312 is corresponding in the position of basement membrane 10 with horizontal isolation strip 222 in the position of basement membrane 10, that is, heat-radiation belt 31 and every Corresponding from area 22, heat-radiation belt 31 heat conductivity is high, and the structure of heat-radiation belt 31 meets most advanced and sophisticated heat effect principle, can be rapidly Heat on isolation area 22 is outwardly distributed, it is to avoid metal area 21 occurs Continuous Breakdown to cause the phenomenon of extensive burn, The use of the capacitor internal that described high-temperature resistant metal thin film is made is not in big electric current, it is to avoid capacitor internal produces high Temperature.The capacitor operation in high temperature environments made even with described high-temperature resistant metal thin film, most of microfuzes 23 are all fused by high temperature, also can only cause the dramatic decrease of capacity until capacitor open-circuit lost efficacy, without overheated generation Blast, thus improve safety and the resistance to elevated temperatures of described high-temperature resistant metal thin film.

For improving the radiating effect of heat dissipation film 30, the width of described vertical isolation strip 221 is a, the width of described horizontal isolation strip 222 Spend for b, the width of described vertical heat-radiation belt 311 is c, c ＞ a；The width of described horizontal heat-radiation belt 312 is d, and d ＞ b is so that heat dissipation film The area of dissipation of the heat-radiation belt 31 in 30 is more than the area of isolation area 22 so that the heat on isolation area 22 can be dissipated further The torrid zone 31 disperses, and the radiating effect of heat-radiation belt 31 improves further.

The width of described heat dissipation film 30 is equal to the width of basement membrane 10, and the length of described horizontal heat-radiation belt 312 is less than heat dissipation film 30 Width so that heat-radiation belt 31 can be enclosed between heat dissipation film 30 and basement membrane 10 completely, be on the one hand to ensure that heat dissipation film 30 He There are enough bond strengths between basement membrane 10, be on the other hand to avoid heat-radiation belt 31 to produce impact to subsequent design, such as when scattered When the torrid zone 31 has electric conductivity, heat-radiation belt 31 must be covered by heat dissipation film 30 completely, it is to avoid punctures.

Described heat dissipation film 30 can be selected for mylar, and mylar has good mechanical performance, rigidity, hardness and toughness Height, puncture-resistant, rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistivity, air-tightness are good；Mylar changes further It is apt to the resistance to elevated temperatures of described high-temperature resistant metal thin film, the performance of mylar is better than poly- ethyl ester, polypropylene, polystyrene, Heat dissipation film 30 adopts oriented pet film body, is equivalent to basement membrane 10 and is thickened, described high-temperature resistant metal thin film punctures Probability declines, and described high-temperature resistant metal thin film service life improves；When described high-temperature resistant metal thin film is in hot environment When, mylar is not susceptible to softening transform, is difficult breakdown between adjacent metal area 21.Described heat-radiation belt 31 is by black lead wash Make through spraying and drying in the inner side of mylar, the inner side of heat dissipation film 30 is also coated with Instant cement, heat dissipation film 30 and base It is fixedly connected by Instant cement between film 10.The course of processing of heat dissipation film 30 is as follows：By graphite powder, sodium silicate, alpha-cyanoacrylate Ester is according to mass ratio 100:（12~15）:（50~60）Ratio mix homogeneously make black lead wash, such as scheme one：Graphite powder 100Kg, sodium silicate 12Kg, cyanoacrylate 50Kg；Scheme two：Graphite powder 100Kg, sodium silicate 13Kg, cyanoacrylate 56Kg；Scheme three：Graphite powder 100Kg, sodium silicate 15Kg, cyanoacrylate 60Kg；The black lead wash of mix homogeneously is sprayed on The inner side of mylar, continues in spraying process to lead to hot blast in the outside of mylar, the temperature of hot blast is 85 ~ 90 DEG C, by stone Ink slurry is dried, and the black lead wash after drying defines heat-radiation belt 31, then coats one layer of Instant cement on the inner side of mylar, Using Instant cement, the inner side of mylar is fixed on the lower surface of basement membrane 10.Graphite powder has excellent heat conductivility, silicic acid Sodium can promote graphite powder to be bondd by cyanoacrylate, cyanoacrylate specifically quick cementitiousness, temperature is increased to 85 ~ When 90 DEG C, graphite powder can be bondd rapidly and form heat-radiation belt 31 by cyanoacrylate cooperation sodium silicate.

The heat conductivity of described heat-radiation belt 31 is 80 ~ 90w/ (m k), and the radiating effect of heat-radiation belt 31 is excellent, can rapid and When the heat on isolation area 22 is outwards distributed；The processing technology of heat-radiation belt 31 is simple, and the structure of described heat-radiation belt 31 Also there is cost-effective effect, the fixing heat dissipation film 30 of Instant cement easy to use and basement membrane 10 are it is ensured that heat dissipation film 30 and basement membrane 10 Between have enough bond areas.Described high-temperature resistant metal thin film carries out high temperature durability experiment, normal under 150 DEG C of environment Working time is not less than 1000h, remains to normal working hourss 120h under 180 DEG C of environment.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this Any modification, equivalent and improvement made within the spirit of utility model and principle etc., should be included in this utility model Protection domain within.

Claims (3)

1. a kind of high-temperature resistant metal thin film, including basement membrane（10）It is characterised in that：Described basement membrane（10）Upper surface be provided with Metal level（20）, basement membrane（10）Lower surface be provided with heat dissipation film（30）, described metal level（20）Including multiple metal areas（21）, Metal area（21）In basement membrane（10）Upper surface array distribution, adjacent metal area（21）Between be provided with isolation area（22）, every From area（22）Including vertical isolation strip（221）With horizontal isolation strip（222）, described vertical isolation strip（221）With basement membrane（10）Axis put down OK, horizontal isolation strip（222）With vertical isolation strip（221）It is mutually perpendicular to, adjacent metal area（21）Between be additionally provided with mini-insurance Silk（23）, adjacent metal area（21）Between pass through microfuze（23）Electrical connection；Described heat dissipation film（30）Inner side set It is equipped with heat-radiation belt（31）, heat-radiation belt（31）Including vertical heat-radiation belt（311）With horizontal heat-radiation belt（312）, described vertical heat-radiation belt（311）If Put in vertical isolation strip（221）Underface and vertical heat-radiation belt（311）With vertical isolation strip（221）It is parallel to each other, described horizontal heat-radiation belt （312）It is arranged on horizontal isolation strip（222）Underface and horizontal heat-radiation belt（312）With horizontal isolation strip（222）It is parallel to each other.

2. a kind of high-temperature resistant metal thin film according to claim 1 it is characterised in that：Described vertical isolation strip（221）'s Width is a, described horizontal isolation strip（222）Width be b, described vertical heat-radiation belt（311）Width be c, c ＞ a；Described horizontal radiating Band（312）Width be d, d ＞ b.

3. a kind of high-temperature resistant metal thin film according to claim 2 it is characterised in that：Described heat dissipation film（30）Width Equal to basement membrane（10）Width, described horizontal heat-radiation belt（312）Length be less than heat dissipation film（30）Width.