CN107146667A - A kind of high-energy tolerance ZnO varistor piece and preparation method thereof - Google Patents
A kind of high-energy tolerance ZnO varistor piece and preparation method thereof Download PDFInfo
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- CN107146667A CN107146667A CN201710357460.3A CN201710357460A CN107146667A CN 107146667 A CN107146667 A CN 107146667A CN 201710357460 A CN201710357460 A CN 201710357460A CN 107146667 A CN107146667 A CN 107146667A
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- zno
- silver electrode
- zno varistor
- sensitive
- piece
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- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052709 silver Inorganic materials 0.000 claims abstract description 81
- 239000004332 silver Substances 0.000 claims abstract description 81
- 239000000919 ceramic Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000011810 insulating material Substances 0.000 claims abstract description 28
- 239000011368 organic material Substances 0.000 claims abstract description 15
- 238000007639 printing Methods 0.000 claims abstract description 11
- 239000002003 electrode paste Substances 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 5
- 239000007772 electrode material Substances 0.000 claims description 2
- 229920000620 organic polymer Polymers 0.000 claims 1
- 239000002861 polymer material Substances 0.000 claims 1
- 239000000523 sample Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 238000010998 test method Methods 0.000 description 5
- 239000013068 control sample Substances 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/105—Varistor cores
- H01C7/108—Metal oxide
- H01C7/112—ZnO type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
Abstract
The present invention provides a kind of high-energy tolerance ZnO varistor piece and preparation method thereof, and ZnO voltage-sensitive ceramic pieces are made first；Then in the two-face printing silver electrode paste of ZnO voltage-sensitive ceramic pieces, then it is sintered to form silver electrode, obtaining two sides there are the pressure-sensitive silver strips of the ZnO of silver electrode；The edge of the last two sides silver electrode in the pressure-sensitive silver strips of ZnO prepares annular insulative capping material, and the ZnO varistor piece of covering annular insulating material is made；0.5mm is respectively no less than inside and outside the width covering silver electrode edge line of annular insulating material.Prepared ZnO varistor piece, regardless of whether being encapsulated using organic material, when bearing pulse current, arcing or flashover will not also occur for its edge and side, and reliability is high.
Description
Technical field
The present invention relates to zno varistor and its manufacture method, more particularly to one kind is exempted to encapsulate, is resistant to high impulse
The ZnO varistor piece and its manufacture method of energy density.
Background technology
Zno varistor has been largely used to that abnormal overvoltage, protection electric power electricity are absorbed or suppressed in power electronic circuits
Sub- equipment exempts from destruction.
Generally manufacturing the method for zno varistor is：ZnO voltage-sensitive ceramic pieces are manufactured, in ZnO voltage-sensitive ceramic piece two sides systems
Standby metal electrode, obtains the ZnO varistor piece for possessing non-linear to voltage characteristic；Then in two gold of ZnO varistor piece
Lead-out wire is welded on category electrode, zno varistor is made using epoxy resin enclosed ZnO varistor piece body.
Zno varistor is needed to bear pulse voltage or pulse current, and ZnO is manufactured using existing ZnO varistor piece
If not using organic material to encapsulate during piezoresistor, ZnO pressure-sensitive electricity when pulse voltage or pulse current impact test is born
Arcing or flashover can occur for resistance plate electrode edge and side.ZnO varistor piece is encapsulated using resinae organic encapsulants,
Arcing or flashover can be prevented.But be due to zno varistor after multiple pulses are impacted, absorb electric energy be transformed into heat
Can, acutely heating inside zno varistor, organic encapsulants expansion causes shape between encapsulated layer and ZnO varistor piece
Into gap, when applying pulse shock experiment to the zno varistor again, arcing or flashover will occur for gap location, cause bag
Sealing ftractures, come off, and even results in the overall fragmentation of zno varistor.
The content of the invention
In order to solve the problems of prior art, the present invention provides a kind of ZnO varistor piece of high-energy tolerance
Preparation method, prepared ZnO varistor piece, even if not using organic material to encapsulate, when bearing pulse current, its edge
Will not also occur arcing or flashover with side, reliability is high.
The present invention also provides a kind of high-energy tolerance ZnO varistor piece, even if not using organic material to encapsulate, its edge
Will not also occur arcing or flashover with side, if ZnO varistor piece combination epoxy resin packaging technology of the present invention is prepared into
Piezoresistor, its temperature is risen by multiple pulses electric current, though outer encapsulating epoxy resin and voltage-sensitive ceramic piece body it
Between produce gap, also will not therefore cause piezoresistive wafer edge and side arcing or flashover, product reliability is high.
High-energy tolerance ZnO varistor piece preparation method of the present invention, comprises the following steps：
S1, making ZnO voltage-sensitive ceramic pieces；
S2, the two-face printing silver electrode paste in ZnO voltage-sensitive ceramic pieces, are then sintered to form silver electrode, obtain two
There are the pressure-sensitive silver strips of the ZnO of silver electrode in face；
S3, the pressure-sensitive silver strips of ZnO two sides silver electrode edge prepare one layer of annular insulating material, covering insulation material is made
The ZnO varistor piece of material；0.5mm is respectively no less than inside and outside the width covering silver electrode edge line of annular insulating material；It is annular exhausted
Edge covering material outer shroud maximum can reach the edge of ZnO voltage-sensitive ceramic pieces.
Preferably, when step S3 prepares insulating materials using inorganic glass materials, in the two sides silver electrode of the pressure-sensitive silver strips of ZnO
Edge prints unorganic glass slurry, after drying, sintered glass material, obtains the ZnO varistor piece of covering inorganic glass materials；
The sintering temperature of inorganic glass materials is at least lower 20 degree than the sintering temperature of silver electrode in step S2.
Preferably, step S3 prepares insulating materials from heat reactive resin as high-molecular organic material, in the pressure-sensitive silver of ZnO
The two sides silver electrode edge printing heat reactive resin of piece is simultaneously dried, and obtains the ZnO varistor piece of covering heat reactive resin.
Preferably, step S3 prepares insulating materials from light-cured resin as high-molecular organic material, in the pressure-sensitive silver of ZnO
The two sides silver electrode edge printing light-cured resin of piece simultaneously solidifies through ultraviolet light, obtains the pressure-sensitive electricity of ZnO of covering light-cured resin
Hinder piece.
High-energy tolerance ZnO varistor piece of the present invention, including individual layer voltage-sensitive ceramic piece, it is printed on voltage-sensitive ceramic piece two sides
Silver electrode and insulating materials；The insulating materials is covered on the edge of one side silver electrode, and the width of insulating materials covers
0.5mm is respectively no less than inside and outside lid silver electrode edge line.
If not using organic material to encapsulate after ZnO varistor piece prepared by prior art, welding lead, it is applied
During pulse current, because silver electrode edge electric field strength is more than inside, and the aerial semiconduction ZnO ceramic surfaces of exposure
Easily ionized under high electric field, therefore when bearing heavy current pulse, arcing can occur for ZnO varistor piece edge and side
Flashover.Using the inventive method, the insulating materials that one layer of silver electrode edges cover is combined closely so that when bearing pulse
Silver electrode edge and air exclusion that electric-field intensity is more concentrated, silver electrode edge to the easy semiconduction for occurring surface ionization
ZnO ceramic surfaces at least 0.5mm distance, the ZnO ceramic surfaces electric breakdown strength ratio covered with insulating materials is exposed to sky
ZnO ceramic surface electric breakdown strengths in gas are much bigger.
Therefore, the ZnO varistor piece made using the invention described above method manufactures zno varistor, even if not adopting
Encapsulated with organic material, pulse current or pulse voltage, ZnO varistor piece of the present invention are applied to manufactured piezoresistor
Edge and side will not also occur arcing or flashover, and after multiple pulses, be attached to ZnO varistor piece edge
Insulative capping material is still tightly combined with voltage-sensitive ceramic piece.Using the technology of the present invention manufacture ZnO varistor can so as not to encapsulating,
Both cost of goods manufactured can be reduced, small product size can be reduced again.Certainly, also may be used using the technology of the present invention manufacture ZnO varistor
To use resin-encapsulate, after product bears multiple pulses, encapsulating material bulk expansion causes encapsulated layer and ZnO varistor piece
Between form gap, and the annular insulative capping material prepared using the present invention is contacted closely with ceramic body and silver electrode face, no
Easy peeling off phenomenon, can avoid occurring resistor disc edge arcing flashover, so as to improve product reliability.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of ZnO varistor piece of the present invention；
Fig. 2 is Fig. 1 A-A cut away views；
Fig. 3 is the structural representation of another embodiment of ZnO varistor piece of the present invention；
Fig. 4 is Fig. 3 B-B cut away views.
Embodiment
The present invention is more specifically described below by embodiment, but the implementation of the present invention is not limited to this.
Referring to Fig. 1,2, ZnO varistor piece of the present invention, including individual layer voltage-sensitive ceramic piece 1, it is printed on 1 liang of voltage-sensitive ceramic piece
The silver electrode 2 in face and the insulative capping material 3 for being printed on the edge of silver electrode 2.Voltage-sensitive ceramic piece 1 can be disc, can also
For square shape sheet, the piezo-resistor structure of square shape sheet is as shown in Figure 3,4.Insulative capping material 3 can using inorganic glass materials or
High-molecular organic material.
In the optimum embodiment of ZnO varistor piece of the present invention, no matter voltage-sensitive ceramic piece 1 is disc or square piece
Shape, is printed on marginal existence a certain distance with voltage-sensitive ceramic piece 1 of edge of the silver electrode 2 on its two sides, i.e. silver electrode
The area that area is less than voltage-sensitive ceramic piece is printed, there is space between the edge of silver electrode and the edge of voltage-sensitive ceramic piece.Insulation
Material 3 is printed on silver electrode edge, is extended inwardly in silver electrode, extends out to silver electrode edge and voltage-sensitive ceramic piece side
Space between edge.0.5mm is respectively no less than inside and outside the width covering silver electrode edge line of insulating materials 3, that is, is covered in silver electrode
On width be no less than 0.5mm, the width being covered on voltage-sensitive ceramic piece is quite a few in 0.5mm, and outer shroud maximum can reach ZnO pressures
The edge of quick potsherd, i.e. outer shroud maximum can cover the complete of the space between foregoing silver electrode edge and voltage-sensitive ceramic piece edge
Portion.
ZnO varistor piece of the present invention can without encapsulating, and directly from the two sides silver electrode 2 of voltage-sensitive ceramic piece 1
Lead is respectively welded, to be prepared into zno varistor, when ZnO varistor piece bears pulse current, edge and side are not
Can occur arcing or flashover.ZnO varistor piece of the present invention can certainly be encapsulated, such as use epoxy resin enclosed work
Skill is encapsulated to be prepared into zno varistor, after encapsulating, even if temperature rises by multiple pulses electric current, encapsulated layer and pressure
Gap is produced between quick ceramic body, but arcing or flashover, reliability will not still occur for the edge and side of piezoresistive wafer
It is very high.
In addition to the mode of lead directly is respectively welded from the silver electrode of two sides, it can also be welded in one side silver electrode
Metal electrode film, the mode of welding lead draws two welding ends in another side silver electrode, to be prepared into ZnO varistor
Device.How two connection ends (i.e. welding ends) of zno varistor are set, and are that citing is illustrated above, this area
Technical staff can also be set using other modes.
The preparation method of piezoresistive wafer of the present invention is described in detail in citing below.
Embodiment 1~4
In the present embodiment, the profile of the pressure-sensitive silver strips of ZnO uses disc, and insulative capping material uses unorganic glass, system
Preparation Method specifically includes following steps：
S11, disc ZnO voltage-sensitive ceramics piece 1 made using prior art, a diameter of 10mm, thickness is 2mm.
S12, making silver electrode 2, it is electric in the ZnO voltage-sensitive ceramic pieces two-face printing silver of above-mentioned making using silk-screen printing technique
Pole slurry, two-face printing pattern is all diameter 7.5mm circle.Dried after clipsheet, the second face of printing is dried again, baking temperature
Spend for 150 DEG C.
The above-mentioned ZnO voltage-sensitive ceramic pieces for being printed with silver electrode paste are put into mesh band type resistor furnace and sinter silver electrode, net
The temperature of band resistance stove highest warm area is by T1 (actual temp that embodiment 1-4 is used is referring to table 1), and the guipure speed of service makes
Product is kept for 5~10 minutes in T1 high-temperature regions, and the preparation of silver electrode 2 is completed after mesh band type resistor furnace is sintered, and obtains ZnO pressures
Quick silver strip.
S13, annular insulative capping material 3 is prepared, specific method is：In the pressure-sensitive silver strip two-face printings of the ZnO of above-mentioned preparation
Annular unorganic glass slurry, makes annular unorganic glass slurry printed patterns cover the edge of silver electrode 2, annular unorganic glass slurry
Internal diameter be D1, external diameter is D2.Dried after clipsheet, then print the second face and dry again, baking temperature is 150 DEG C, then is put
Enter and inorganic glass materials are sintered in mesh band type resistor furnace, the temperature of mesh band type resistor furnace highest warm area is T2, the guipure speed of service
Product is set to be kept for 5~10 minutes in T2 high-temperature regions so that the silver electrode edge of the pressure-sensitive silver strips of ZnO adheres to one layer of annular insulation covering
Material 3, that is, be made ZnO varistor piece of the present invention.
0.5mm, the maximum ring of area are respectively no less than inside and outside the width covering silver electrode edge line of annular insulative capping material 3
Its outer shroud of shape insulative capping material 3 can reach the edge of ZnO voltage-sensitive ceramic pieces.
Electric performance test is carried out to ZnO varistor piece of the present invention：Using tinned wird welding lead, solder joint is located at sample
Not by glass material covering part in the middle of two silver electrodes 2；Three parameter (pressure sensitive voltages are tested using general varistor tester
V1mA, voltage nonlinearity α, leakage current IL)；Using composite wave pulsing device, (open circuit voltage wave is 1.2/50 μ s ripple
Shape, short circuit current wave is 8/20 μ s waveforms, and source impedance is 2 ohm) test sample pulse behaviors, setting open-circuit voltage crest value/
Short circuit current flow crest value is：4kV/2kA, pulse applies number of times and is set as 25 times, and the time interval between two subpulses is 60 seconds,
When sample, which is subjected to pulse number, occurs arcing or flashover less than 25 times, stops the sample pulse testing and record what is carried out
Pulse testing number of times, when arcing or flashover do not occur for 25 experiments of completion, record surveys sample passes.
Table 1 lists electric performance test result, wherein control sample 1 be to the pressure-sensitive silver strips of ZnO of non-printed glass slurry (i.e.
Do not make annular insulative capping material 3) direct welding lead；The sintering silver electrode temperature and sintered glass material of control sample 2
Temperature difference is less than 20 DEG C；During 3 printed glass slurry of control sample, although ring glass printed patterns covering silver electrode edge,
Ring glass pattern is cylindrical to be less than 0.5mm with silver electrode Edge Distance；During 4 printed glass slurry of control sample, ring glass printing
Although pattern covering silver electrode edge, annular inner circle is less than 0.5mm with silver electrode Edge Distance.
Pressure-sensitive three parameter testings result before and after the unlisted test specimen pulse test of table 1, correlation properties are decided by pressure-sensitive pottery
Ceramic material body manufacturing technology, it is unrelated with ZnO varistor piece of the present invention and preparation method thereof.
Table 1
Embodiment 5
The present embodiment in addition to making annular insulative capping material 3 using high-molecular organic material, remaining preparation method with
Embodiment 1 is identical.
The present embodiment selects heat reactive resin, makes annular insulative capping material 3, specifically uses two part heat cured tree
Fat, using silk screen print method, printed patterns are annular, internal radius 6.0mm, annulus external diameter 9.0mm, are baked after clipsheet
Dry, the second face of printing is dried again, and baking temperature is 150 DEG C, is placed into oven and is toasted at 150 DEG C 30 minutes, that is, completes annular
The preparation of insulative capping material 3.
Method of testing is same as Example 1, after welding lead, and the present embodiment sample bears outer after 25 4kV/2kA pulses
Shape is intact, does not occur edge or side arcing flashover.
Embodiment 6
The present embodiment in addition to making annular insulative capping material 3 using high-molecular organic material, remaining preparation method with
Embodiment 1 is identical.
The present embodiment selects light-cured resin, makes annular insulative capping material 3, specific to use UV cured epoxy acrylic acid
Resin, using silk screen print method, printed patterns are annular, internal radius 6.0mm, annulus external diameter 9.0mm, are passed through after clipsheet
Ultraviolet light solidifies 5 minutes, then prints the second face and solidifies 5 minutes through ultraviolet light again, is derived from covering annular insulating material 3
ZnO varistor piece.
Method of testing is same as Example 1, after welding lead, and the present embodiment sample bears outer after 25 4kV/2kA pulses
Shape is intact, does not occur edge or side arcing flashover.
Embodiment 7
The present embodiment except ZnO voltage-sensitive ceramics piece 1 is made into square shape sheet, and silver electrode 2 size, annular insulation covering
Outside the size of material 3, remaining preparation method is same as Example 1.
ZnO voltage-sensitive ceramics piece 1 is made using prior art, profile is square, and size is 9.0*9.0*2.0mm；Correspondingly,
Silver electrode 2 is square, and printed patterns size is 7.2*7.2mm；Annular insulative capping material 3 is side's annular, and interior square size is
5.5*5.5mm, outer square size is 8.5*8.5mm.
Method of testing is same as Example 1, after welding lead, and the present embodiment sample bears outer after 25 4kV/2kA pulses
Shape is intact, does not occur edge or side arcing flashover.
Embodiment 8
ZnO varistor piece of the present invention is made according to the method for embodiment 1, will using existing piezo-resistance encapsulation technology
The ZnO varistor piece welding lead of the present invention made, encapsulates epoxy resin, test sample is made.
Sample test method is same as Example 1, and it is intact that the present embodiment sample bears profile after 60 4kV/2kA pulses.
Embodiment 9
ZnO varistor piece of the present invention is made according to the method for embodiment 5, will using existing piezo-resistance encapsulation technology
The ZnO varistor piece welding lead of the present invention made, encapsulates epoxy resin, test sample is made.
Sample test method is same as Example 1, and it is intact that the present embodiment sample bears profile after 60 4kV/2kA pulses.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of high-energy tolerance ZnO varistor piece preparation method, it is characterised in that comprise the following steps：
S1, making ZnO voltage-sensitive ceramic pieces；
S2, the two-face printing silver electrode paste in ZnO voltage-sensitive ceramic pieces, are then sintered to form silver electrode, and obtaining two sides has
The pressure-sensitive silver strips of ZnO of silver electrode；
S3, the pressure-sensitive silver strips of ZnO two sides silver electrode edge prepare one layer of annular insulating material, covering insulating material is made
ZnO varistor piece；0.5mm is respectively no less than inside and outside the width covering silver electrode edge line of annular insulating material.
2. high-energy tolerance ZnO varistor piece preparation method according to claim 1, it is characterised in that in step S3
Insulating materials be inorganic glass materials or high-molecular organic material.
3. high-energy tolerance ZnO varistor piece preparation method according to claim 2, it is characterised in that step S3 is adopted
When preparing insulating materials with inorganic glass materials, unorganic glass slurry is printed at the two sides silver electrode edge of the pressure-sensitive silver strips of ZnO, is baked
After dry, sintered glass material obtains the ZnO varistor piece of covering inorganic glass materials；The sintering temperature of inorganic glass materials
Sintering temperature than silver electrode in step S2 is at least low 20 degree.
4. high-energy tolerance ZnO varistor piece preparation method according to claim 2, it is characterised in that step S3 is selected
Insulating materials is prepared as high-molecular organic material with heat reactive resin, is printed at the two sides silver electrode edge of the pressure-sensitive silver strips of ZnO
Heat reactive resin is simultaneously dried, and obtains the ZnO varistor piece of covering heat reactive resin.
5. high-energy tolerance ZnO varistor piece preparation method according to claim 2, it is characterised in that step S3 is selected
Insulating materials is prepared as high-molecular organic material with light-cured resin, is printed at the two sides silver electrode edge of the pressure-sensitive silver strips of ZnO
Light-cured resin simultaneously solidifies through ultraviolet light, obtains the ZnO varistor piece of covering light-cured resin.
6. high-energy tolerance ZnO varistor piece preparation method according to claim 1, it is characterised in that the annular
The outer shroud of insulating materials reaches the edge of ZnO voltage-sensitive ceramic pieces.
7. a kind of high-energy tolerance ZnO varistor piece, it is characterised in that including individual layer voltage-sensitive ceramic piece, be printed on pressure-sensitive pottery
The silver electrode and insulating materials on ceramics two sides；The insulating materials is covered on the edge of silver electrode, and the width of insulating materials
0.5mm is respectively no less than inside and outside degree covering silver electrode edge line.
8. high-energy tolerance ZnO varistor piece according to claim 7, it is characterised in that the insulating materials is nothing
Machine glass material or high-molecular organic material.
9. high-energy tolerance ZnO varistor piece according to claim 8, it is characterised in that the organic polymer material
Expect for heat reactive resin or light-cured resin.
10. high-energy tolerance ZnO varistor piece according to claim 7, it is characterised in that the insulating materials is ring
Shape insulating materials, its outer shroud reaches the edge of voltage-sensitive ceramic piece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357460.3A CN107146667A (en) | 2017-05-19 | 2017-05-19 | A kind of high-energy tolerance ZnO varistor piece and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710357460.3A CN107146667A (en) | 2017-05-19 | 2017-05-19 | A kind of high-energy tolerance ZnO varistor piece and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439996A (en) * | 2019-01-17 | 2020-07-24 | 陕西华星电子集团有限公司 | Piezoresistor ceramic material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472453A (en) * | 1977-11-21 | 1979-06-09 | Mitsubishi Electric Corp | Nonnlinear resistor |
| JP3149095U (en) * | 2008-12-25 | 2009-03-12 | 岡谷電機産業株式会社 | Barista |
| CN106448974A (en) * | 2016-11-06 | 2017-02-22 | 合肥圣达电子科技实业有限公司 | Pressure-sensitive resistor capable of preventing aluminum electrode layer from hydrothermal ageing and invalidation and preparation method of pressure-sensitive resistor |
-
2017
- 2017-05-19 CN CN201710357460.3A patent/CN107146667A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472453A (en) * | 1977-11-21 | 1979-06-09 | Mitsubishi Electric Corp | Nonnlinear resistor |
| JP3149095U (en) * | 2008-12-25 | 2009-03-12 | 岡谷電機産業株式会社 | Barista |
| CN106448974A (en) * | 2016-11-06 | 2017-02-22 | 合肥圣达电子科技实业有限公司 | Pressure-sensitive resistor capable of preventing aluminum electrode layer from hydrothermal ageing and invalidation and preparation method of pressure-sensitive resistor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439996A (en) * | 2019-01-17 | 2020-07-24 | 陕西华星电子集团有限公司 | Piezoresistor ceramic material and preparation method thereof |
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Application publication date: 20170908 |