Background technology
With the development and progress of electronic science and technology, the energy problem of 21 century is more and more noticeable, and the whole world is each
For industry all in energy-conservation on a grand scale, illuminating industry is exactly a part therein, and according to incompletely statistics, electric consumption on lighting amount is very big,
Thus energy-saving potential is huge, and this provides business opportunity and challenge to the component supplier of illuminating industry.Power capacitor industry is exactly it
In a beneficiary, it is particularly disabled in incandescent 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 developments, 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
Bigger, risk is small, and rate of return on investment is big.
The phenomenon that multilayer dielectricity Continuous Breakdown causes extensive burn easily occurs during common metal film self-healing, its electricity
Be not in big electric current inside container, produce high temperature;Also, common metal 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 film radiating effect limited, using common
The capacitor body that metallized film is wound into easily accumulates heat in the capacitor, interior along with capacitor body compact structure
Portion's heat distributes difficulty.Capacitor made of common metal film is when environment temperature is higher than 80 DEG C or so, metallized film
Generation breakdown probability exponentially rises, and service life declines.
The content of the invention
The present invention is in view of the deficienciess of the prior art, provide a kind of high-temperature resistant metal film, concrete technical scheme
It is as follows:
A kind of high-temperature resistant metal film, including basement membrane, the upper surface of the basement membrane are provided with metal level, the following table of basement membrane
Face is provided with heat dissipation film, and the metal level includes multiple metal areas, and metal area is in the upper surface array distribution of basement membrane, adjacent gold
Category is provided with isolated area between area, and isolated area includes vertical isolation strip and horizontal isolation strip, and the axis of the vertical isolation strip and basement membrane is put down
OK, horizontal isolation strip is mutually perpendicular to vertical isolation strip, and microfuze, adjacent metal area are additionally provided between adjacent metal area
Between be electrically connected by microfuze;The upper surface of the heat dissipation film is provided with heat-radiation belt, and heat-radiation belt includes vertical heat-radiation belt
With horizontal heat-radiation belt, the 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, institute
State that 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 above-mentioned technical proposal, the width of the vertical isolation strip is a, and the width of the horizontal isolation strip is b, institute
The width for stating vertical heat-radiation belt is c, c > a;The width of the horizontal heat-radiation belt is d, d > b.
As the improvement of above-mentioned technical proposal, the width of the heat dissipation film is equal to the width of basement membrane, the horizontal heat-radiation belt
Length is less than the width of heat dissipation film.
As the improvement of above-mentioned technical proposal, the heat dissipation film is polyester film, and the heat-radiation belt is by black lead wash in polyester
The upper surface of film is made by spraying and drying, and the upper surface of heat dissipation film is also coated with Instant cement, between heat dissipation film and basement membrane
It is fixedly connected by Instant cement.
As the improvement of above-mentioned technical proposal, the black lead wash is made up of graphite powder, sodium metasilicate, cyanoacrylate, stone
The quality of graphite powder in ink slurry:The quality of sodium metasilicate:Quality=100 of cyanoacrylate:(12~15):(50~60);Stone
Drying temperature of the ink slurry in polyester film upper surface is 85~90 DEG C.
High-temperature resistant metal film of the present invention is by setting heat dissipation film, and setting is relative with isolated area on heat dissipation film
The heat-radiation belt answered, avoid metal area that the phenomenon that Continuous Breakdown causes extensive burn occurs, utilize the high-temperature resistant metal film
Manufactured capacitor can avoid its internal generation high temperature, capacitor operation in hot environment, even if most miniature
Fuse is all fused by high temperature, is also not in that overheat is exploded;The self-healing ability of the high-temperature resistant metal film is high, dissipates
Thermal effect is good, and resistance to elevated temperatures is strong, prevents that calcination or punch-through locally occurs, and security and service life are high, meets actual
Requirement, implementation result are good.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figures 1 to 3, the high-temperature resistant metal film, including basement membrane 10, the upper surface of the basement membrane 10 are provided with
Metal level 20, the lower surface of basement membrane 10 are provided with heat dissipation film 30, and the metal level 20 includes multiple metal areas 21, and metal area 21 exists
The upper surface array distribution of basement membrane 10, isolated area 22 is provided between adjacent metal area 21, is led between adjacent metal area 21
Cross isolated area 22 to disconnect, isolated area 22 includes vertical isolation strip 221 and horizontal isolation strip 222, the vertical isolation strip 221 and basement membrane 10
Diameter parallel, horizontal isolation strip 222 are mutually perpendicular to vertical isolation strip 221, and mini-insurance is additionally provided between adjacent metal area 21
Silk 23, it is electrically connected by microfuze 23 between adjacent metal area 21;The upper surface of the heat dissipation film 30 is provided with scattered
The torrid zone 31, heat-radiation belt 31 include vertical heat-radiation belt 311 and horizontal heat-radiation belt 312, the vertical heat-radiation belt 311 and are arranged on vertical isolation strip 221
Underface and vertical heat-radiation belt 311 be parallel to each other with vertical isolation strip 221, the horizontal heat-radiation belt 312 is arranged on horizontal isolation strip 222
Underface and horizontal heat-radiation belt 312 is parallel to each other with horizontal isolation strip 222.
Basement membrane 10 can use one kind in poly- ethyl ester, polypropylene, polystyrene be made, and metal area 21 can copper evaporation process general
Aluminium or zinc are plated in the upper surface of basement membrane 10.When in use, electric current is entered the high-temperature resistant metal film by microfuze 23
Enter the metal area 21 where breakdown point, current value reaches the moment of certain numerical value, metal area 21 generate heat caused by energy make it is micro-
Type fuse 23 is fused immediately, and the metal area 21 where making breakdown point is totally kept apart with the high-temperature resistant metal film,
Big shove into breakdown point is prevented in time.For metal area 21 due to being made of aluminium or zinc, the radiating effect of metal area 21 is excellent
It is good, the poor radiation of basement membrane 10, and the presence of isolated area 22 make it that the upper surface radiating of basement membrane 10 has tomography so that isolated 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, i.e., heat-radiation belt 31 and every
Corresponding from area 22, the thermal conductivity factor of heat-radiation belt 31 is high, and the structure of heat-radiation belt 31 meets sophisticated fuel factor principle, can be rapidly
Heat in isolated area 22 is outwardly distributed, metal area 21 is avoided and the phenomenon that Continuous Breakdown causes extensive burn occurs,
The use of capacitor internal made of the high-temperature resistant metal film is not in big electric current, avoids capacitor internal from producing high
Temperature.Even with capacitor operation in high temperature environments, most of microfuzes made of the high-temperature resistant metal film
23 are all fused by high temperature, can only also cause the dramatic decrease of capacity until capacitor open-circuit fails, without overheating generation
Blast, so as to improve the security and resistance to elevated temperatures of the high-temperature resistant metal film.
To improve the radiating effect of heat dissipation film 30, the width of the vertical isolation strip 221 is a, the width of the horizontal isolation strip 222
Spend for b, the width of the vertical heat-radiation belt 311 is c, c > a;The width of the horizontal heat-radiation belt 312 is d, d > b so that heat dissipation film
The area of dissipation of heat-radiation belt 31 in 30 is more than the area of isolated area 22 so that the heat in isolated area 22 can further be dissipated
The torrid zone 31 disperses, and the radiating effect of heat-radiation belt 31 further improves.
The width of the heat dissipation film 30 is equal to the width of basement membrane 10, and the length of the 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 ensure the He of heat dissipation film 30
There are enough bond strengths between basement membrane 10, be on the other hand to avoid heat-radiation belt 31 from having an impact subsequent design, such as when scattered
When the torrid zone 31 is conductive, heat-radiation belt 31 must be covered by heat dissipation film 30 completely, avoid puncturing.
Polyester film can be selected in the heat dissipation film 30, and polyester film 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;Polyester film further changes
It is apt to the resistance to elevated temperatures of the high-temperature resistant metal film, the performance of polyester film is better than poly- ethyl ester, polypropylene, polystyrene,
Heat dissipation film 30 uses oriented pet film body, is thickened equivalent to basement membrane 10, what the high-temperature resistant metal film punctured
Probability declines, and the high-temperature resistant metal film service life improves;When the high-temperature resistant metal film is in hot environment
When, polyester film is not susceptible to softening transform, is not easy between adjacent metal area 21 breakdown.The heat-radiation belt 31 is by black lead wash
It is made in the upper surface of polyester film by spraying and drying, the upper surface of heat dissipation film 30 is also coated with Instant cement, heat dissipation film 30
It is fixedly connected between basement membrane 10 by Instant cement.The process of heat dissipation film 30 is as follows:By graphite powder, sodium metasilicate, cyano group third
Olefin(e) acid ester is according to mass ratio 100:(12~15):The ratio of (50~60) is well mixed to be made black lead wash, such as scheme one:Graphite
Powder 100Kg, sodium metasilicate 12Kg, cyanoacrylate 50Kg;Scheme two:Graphite powder 100Kg, sodium metasilicate 13Kg, alpha-cyanoacrylate
Ester 56Kg;Scheme three:Graphite powder 100Kg, sodium metasilicate 15Kg, cyanoacrylate 60Kg;Well mixed black lead wash is sprayed
Continuing to lead to hot blast in the outside of polyester film in the upper surface of polyester film, in spraying process, the temperature of hot blast is 85~90 DEG C,
Black lead wash is dried, the black lead wash after drying forms heat-radiation belt 31, and one layer is then coated on the upper surface of polyester film
Instant cement, the upper surface of polyester film is fixed on to the lower surface of basement membrane 10 using Instant cement.Graphite powder has excellent heat conduction
Performance, sodium metasilicate can promote graphite powder to be bonded by cyanoacrylate, the specific quick cementitiousness of cyanoacrylate, by temperature
When being increased to 85~90 DEG C, cyanoacrylate coordinates sodium metasilicate to bond graphite powder to form heat-radiation belt 31 rapidly.
The thermal conductivity factor of the heat-radiation belt 31 is 80~90w/ (mk), and the radiating effect of heat-radiation belt 31 is excellent, can be rapid
Timely the heat in isolated area 22 is outwards distributed;The manufacture craft of heat-radiation belt 31 is simple, and the knot of the heat-radiation belt 31
Structure also has cost-effective effect, is easy to use Instant cement to fix heat dissipation film 30 and basement membrane 10, ensures heat dissipation film 30 and basement membrane
There are enough bond areas between 10.The high-temperature resistant metal film carries out high temperature durability experiment, under 150 DEG C of environment just
The normal working time is not less than 1000h, and normal working hours 120h is remained under 180 DEG C of environment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.