CN101252813B - PTC thermal sensitive ceramic heating element - Google Patents
PTC thermal sensitive ceramic heating element Download PDFInfo
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- CN101252813B CN101252813B CN2008100232802A CN200810023280A CN101252813B CN 101252813 B CN101252813 B CN 101252813B CN 2008100232802 A CN2008100232802 A CN 2008100232802A CN 200810023280 A CN200810023280 A CN 200810023280A CN 101252813 B CN101252813 B CN 101252813B
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- heating element
- temperature coefficient
- positive temperature
- principal component
- heater element
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- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 title abstract 11
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 8
- 229910052745 lead Inorganic materials 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 238000005245 sintering Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- XMFOQHDPRMAJNU-UHFFFAOYSA-N lead(II,IV) oxide Inorganic materials O1[Pb]O[Pb]11O[Pb]O1 XMFOQHDPRMAJNU-UHFFFAOYSA-N 0.000 abstract 1
- 239000002075 main ingredient Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000032683 aging Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a heating element of PTC thermosensitive ceramics. The main ingredient of the heating element comprises the following components and the material proportioning by weight: 37.56 to 42.65 percent of BaCO2, 26.16 to 31.23 percent of Pb3O4, 26.74 to 28.23 percent of TiO2, and 2.16 to 3.13 percent of CaCO3. The heating element has the advantages that firstly, the curie temperature of the receipt of the heating element, and the range for being suitable for the service voltage are both wider, and the conformity and the stability of the finished product are obviously improved;secondly, the electrical property of the heating element is better, the heating element is uneasy to be punctured and spark, and the thermal efficiency and the service life of the element are both greatly prolonged; thirdly, the physical property of the heating element is obviously improved, the cold-hot resistant catastrophic property is greatly enhanced, and the anti-aging property is improved;fourthly, the manufacturing process of the heating element is simple, the energy consumption for sintering is obviously saved, and the manufacturing cost is greatly reduced; fifthly, after the PTC heating element manufactured through the invention is assembled into a heating device, the production cost is obviously reduced, and the conformity, the operation reliability and the security of the product are all greatly improved.
Description
Technical field
The present invention relates to used positive temperature coefficient ceramic heater element in a kind of high-Curie-point positive temperature coefficient (PTC) thermal sensitive ceramics heater element, particularly household electrical appliance positive temperature coefficient heater spare and the air conditioner positive temperature coefficient electrical auxiliary heater.
Background technology
The scope of application of ceramic positive temperature coefficient heated at constant temperature device in all kinds of interchanges, direct current household electrical appliance and civilian, industrial electrical equipment equipment is quite wide.In recent years, it is more extensive especially to add the use of pining in the air conditioner auxiliary electrical.Wherein the positive temperature coefficient ceramic heater element is the parts of most critical in the heater, the quality that it is electric, the performance of physics has directly determined heater performance.The positive temperature coefficient heater element that existing ceramic positive temperature coefficient constent temperature heater is adopted all has unreasonable part because component, content and the production technology of element are added in selected principal component, donor element, recipient element and glassy phase modification, causes the overall targets such as electrical property, thermal stability, useful life of heater element to be difficult to satisfy higher requirement.
Summary of the invention
Goal of the invention: the ceramic positive temperature coefficient electric heater thermal sensitive ceramics heater element that the purpose of this invention is to provide a kind of function admirable.
Technical scheme: positive temperature coefficient thermal sensitive ceramic heater element of the present invention is characterized in that the principal component of described heater element is made by the material that comprises following component and weight proportion: BaCO
2: 37.56-42.65%, Pb
3O
4: 26.16-31.23%, TiO
2: 26.74-28.23%, CaCO
3: 2.16-3.13%.
In the principal component of existing positive temperature coefficient ceramic heater element prescription, TiO
2Content generally excessive, ratio is 〉=28.30, CaCO
3Content lessly even do not add, ratio is≤1.8%.TiO
2Though content higher useful to realizing semiconducting, excessive Ti generates excessive glassy phase easily, causes density of material to reduce cold-and-heat resistent violent change decreased performance.As long 24mm, wide 15mm, thick 2.5mm, Curie point is at 250 ± 10 ℃ positive temperature coefficient heater element, its ageing resistace and withstand voltage properties all are difficult to reach simultaneously desirable effect, element is when passing through to exchange the withstand voltage test of 600V/60S, and the ratio that causes puncture, arcing is all more than 5%.Add CaCO
3After can improve density of material, strengthen cold-and-heat resistent violent change performance, but semiconducting had detrimental effect, will produce significantly influence to semiconducting after generally surpassing 2%, room temperature resistance is increased.TiO is rationally lowered in the present invention
2Content can remedy principal component skew and the CaCO that causes because of the volatilization of Pb at high temperature sintering
3Content increase the adverse effect that semiconducting is produced.CaCO
3As a kind of lime phase, the increase of its content has obviously improved the crystal boundary and the grainiess of positive temperature coefficient, has improved ageing resistace.Equally with long 24mm, wide 15mm, thick 2.5mm, Curie point is an example at 250 ± 10 ℃ positive temperature coefficient heater element, element is when passing through to exchange the withstand voltage test of 700V/60S after adopting the present invention, do not puncture more than 98%, not arcing, ageing resistace and withstand voltage properties are significantly improved.
Be performance and the process conditions of further improving heater element, on the basis that the described in front principal component proportioning of the present invention is adjusted, also add on the kind of element and the ratio and adjust accordingly in alms giver's semiconducting.Donor element of the present invention has following component and with respect to the weight proportion of principal component total amount: Nb
2O
5: 0.125-0.145%, CeO
2: 0.018-0.023%.Nb
2O
5Though can more easily realize semiconducting, kind, the sintering process of modifying element all had higher requirement.Prior art is the Pb volatilization when checking high temperature sintering, and the temperature error when high temperature sintering wants≤± 3 ℃, and for reaching semiconducting effect preferably, high-temperature holding time will 〉=20mim, this is the mutual contradiction of volatilizing of the Pb when checking high temperature sintering just.Among the present invention with rare earth element ce O
2With Nb
2O
5Add element as alms giver's semiconducting simultaneously, the Pb volatilization when both having checked high temperature sintering effectively, under the prerequisite that reaches better semiconducting effect, the adaptability of prescription is wideer, has also obviously improved high-sintering process simultaneously.Under the prerequisite of the same Curie temperature of element, the temperature error scope of the present invention when high temperature sintering can 〉=± 6 ℃, high-temperature holding time can be at≤10mim with interior adjustment.
Equally, in order further to improve the comprehensive electrochemical properties of heater element, the present invention also adjusts on the adding proportion of main metallic element accordingly being subjected to, and the present invention adopts metal oxide MnO
2As being subjected to the main element that adds, it is 0.0175-0.0195% that its weight with respect to the principal component total amount is added proportioning.MnO
2As the metal recipient element, mainly play the temperature coefficient of resistance that improves element, proof voltage and ageing resistace, effects such as crystal grain thinning, the kind and the addition of its addition and donor element condition each other, prior art is subjected to the proportioning of principal component, the kind of donor element and the restriction of addition, when surpassing 0.017%, the addition of Mn just is difficult to the semiconducting effect that reaches desirable, the addition of Mn be difficult to improve the temperature coefficient of resistance that also causes high-Curie-point positive temperature coefficient element more than Tc240 ℃ generally super only 13%/℃, so that the ageing resistace of element and withstand voltage properties all are difficult to improve, for this reason, can only adopt highly purified raw material to remedy in this respect deficiency, in any case but, the positive temperature coefficient element that prior art is produced by the gentle damp and hot circulation of 10000 times height afterwards resistance change rate all near 10%.The present invention because in the adding proportion of principal component and donor element, add on the kind and adjust, be to enlarge MnO
2The interpolation scope created condition, MnO
2Adding proportion increase, the withstand voltage properties and the ageing resistace of element have directly been improved, after tested, having adopted Curie temperature of the present invention is 260 ± 10 ℃ positive temperature coefficient heater element, the temperature coefficient of resistance of element can 〉=15.5%/℃ %, the thermal efficiency ratio prior art improves more than 10%, with the air-conditioning electrical auxiliary heater is example, when using positive temperature coefficient element multi-disc of the present invention assembling in parallel heater, because the raising of the heat efficiency, the consumption of positive temperature coefficient heater element can reduce 10-15% than prior art, the consistency of power and resistance also improves more than 10% than prior art, and product at the gentle damp and hot circulation of the height that passes through 10000 times back resistance change rate still≤5%.
For the combination property of improving the positive temperature coefficient heater element with improve thermal stability, the present invention also is added with following component and with respect to the weight proportion of principal component total amount: LiCO in described principal component
3: 0.026-0.028%, SiO
2: 0.285-0.465%, Al
2O
3: 0.095-0.155%.Add Si among the present invention, the purpose one of Al and Li and its adding proportion of adjustment is for crystal grain thinning, improves the thermal stability of element, the 2nd, for the sintering range that makes the positive temperature coefficient heater element broadens, improve the consistency and the rate of finished products of element.Because the interpolation of prior art Si is on the low side, the addition of Al is on the high side, and this ratio still is not very good on the effect that reaches on the crystal grain thinning, and it is also narrower to burn till accommodation.The present invention is Si, and Al and Li add mutually as modified glass that element adds simultaneously and with the corresponding adjustment of adding proportion, the wherein increase of Si addition, the minimizing of Al addition and suitable LiCO
3Interpolation crystal grain thinning has been produced positive effect, the compactness and the intensity of element have further been improved, improved the cold-and-heat resistent violent change ability and the thermal stability of element greatly, made to reach (be about 30,000 hours the useful life of general element) more than 100,000 hours in useful life of element.In addition, LiCO among the present invention
3The rational proportion of the interpolation of modifying element and Si, Al glassy phase also makes the sintering range of element broaden, and resistance, withstand voltage rate of finished products improve, and the highest sintering temperature during sintering also is reduced to 1250-1265 ℃ by original 1280-1300 ℃.
On manufacturing process, the present invention is binder removal and disposable the finishing of sintering two procedures, and the product sintering energy consumption has been saved more than 40% in All Time addition≤7 of binder removal and sintering hour, and production cost obviously reduces.In addition, manufacturing process of the present invention and existing technology are roughly the same, no longer narrate at this.
Positive temperature coefficient ceramic heater element of the present invention, through adjusting the ratio of principal component, can produce all kinds of high-performance positive temperature coefficient heater elements of Curie temperature in 180 ℃ of-280 ℃ of scopes, add element through adjusting all the other, can produce all kinds of positive temperature coefficient heater elements that adapt to direct current 12-36V and exchange 110-380V, product can be widely used in all kinds of uses and exchange, the family expenses of DC power supply, automobile, in the industrial electrical equipment, especially in ceramic positive temperature coefficient air-conditioning electrical auxiliary heater as heater element, the fail safe of its use, reliability is compared with other heater elements, has unrivaled superiority.
Beneficial effect: the present invention's remarkable advantage compared with prior art is, 1, the Curie temperature of heater element prescription and adapt to the equal broad of scope of working voltage, and finished product consistency and stability obviously improve.2, the electrical property of heater element is better, is difficult for puncture, arcing, and prolong useful life greatly; 3, the physical property of heater element is obviously improved, and cold-and-heat resistent violent change performance strengthens greatly, and ageing resistace improves; 4, the manufacturing process of heater element is simple, has obviously saved sintering energy consumption, and manufacturing cost reduces greatly; 5, after the positive temperature coefficient heater element of employing manufacturing of the present invention was assembled into heater members, production cost obviously reduced, and consistency of product and dependability and fail safe also improve greatly.
Embodiment
Embodiment 1: the positive temperature coefficient thermal sensitive ceramic heater element, its principal component is made by the material that comprises following component and weight proportion: BaCO
2: 37.56%, Pb
3O
4: 31.23%, TiO
2: 28.23%, CaCO
3: 2.98%.
Embodiment 2: the positive temperature coefficient thermal sensitive ceramic heater element, its principal component is made by the material that comprises following component and weight proportion: BaCO
2: 42.65%, Pb
3O
4: 26.16%, TiO
2: 28.06%, CaCO
3: 3.13%.
Embodiment 3: the positive temperature coefficient thermal sensitive ceramic heater element, its principal component is made by the material that comprises following component and weight proportion: BaCO
2: 40.10%, Pb
3O
4: 30.12%, TiO
2: 27.62%, CaCO
3: 2.16%.
Embodiment 4: the positive temperature coefficient thermal sensitive ceramic heater element, its principal component is made by the material that comprises following component and weight proportion: BaCO
2: 42.12%, Pb
3O
4: 28.16%, TiO
2: 26.74%, CaCO
3: 2.98%.
Embodiment 5: on the basis of embodiment 1, and the component below in material, adding and with respect to the weight proportion of total amount of material: Nb
2O
5: 0.125%, CeO
2: 0.018%.
Embodiment 6: on the basis of embodiment 1, and the component below in material, adding and with respect to the weight proportion of total amount of material: Nb
2O
5: 0.145%, CeO
2: 0.023%.
Embodiment 7: on the basis of embodiment 1, and the component below in material, adding and with respect to the weight proportion of total amount of material: Nb
2O
5: 0.135%, CeO
2: 0.020%.
Embodiment 8: on the basis of embodiment 2, and the component below in material, adding and with respect to the weight proportion of total amount of material: MnO
2: 0.0175%.
Embodiment 9: on the basis of embodiment 2, and the component below in material, adding and with respect to the weight proportion of total amount of material: MnO
2: 0.0195%.
Embodiment 10: on the basis of embodiment 2, and the component below in material, adding and with respect to the weight proportion of total amount of material: MnO
2: 0.0180%.
Embodiment 11: on the basis of embodiment 3, and the component below in material, adding and with respect to the weight proportion of total amount of material: LiCO
3: 0.026%, SiO
2: 0.485%, Al
2O
3: 0.090%.
Embodiment 12: on the basis of embodiment 3, and the component below in material, adding and with respect to the weight proportion of total amount of material: LiCO
3: 0.028%, SiO
2: 0.465%, Al
2O
3: 0.155%.
Embodiment 13: on the basis of embodiment 3, and the component below in material, adding and with respect to the weight proportion of total amount of material: LiCO
3: 0.026%, SiO
2: 0.285%, Al
2O
3: 0.095%.
Adopt the heater element of the synthetic made of the foregoing description, through test, its every performance can both get a desired effect.
Embodiment 14: by the positive temperature coefficient heater that the heater element of front is made, comprise corrugated positive temperature coefficient heater and the insulating support that is installed in the heater two ends.
Claims (4)
1. a positive temperature coefficient thermal sensitive ceramic heater element is characterized in that the principal component of described heater element is made by the material that comprises following component and weight proportion: BaCO
2: 37.56-42.65%, Pb
3O
4: 26.16-31.23%, TiO
2: 26.74-28.23%, CaCO
3: 2.16-3.13%.
2. a kind of positive temperature coefficient thermal sensitive ceramic heater element according to claim 1 is characterized in that also being added with following alms giver's semiconducting element and with respect to the weight proportion of principal component total amount: Nb in described principal component
2O
5: 0.125-0.145%, CeO
2: 0.018-0.023%.
3. a kind of positive temperature coefficient thermal sensitive ceramic heater element according to claim 1 is characterized in that also being added with in described principal component and following is subjected to main burning element and with respect to the weight proportion of principal component total amount: MnO
2: 0.0175-0.0195%.
4. a kind of positive temperature coefficient thermal sensitive ceramic heater element according to claim 1 is characterized in that also being added with following glassy phase modifying element and with respect to the weight proportion of principal component total amount: LiCO in described principal component
3: 0.026-0.028%, SiO
2: 0.285-0.465%, Al
2O
3: 0.095-0.155%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100232802A CN101252813B (en) | 2008-04-07 | 2008-04-07 | PTC thermal sensitive ceramic heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100232802A CN101252813B (en) | 2008-04-07 | 2008-04-07 | PTC thermal sensitive ceramic heating element |
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| Publication Number | Publication Date |
|---|---|
| CN101252813A CN101252813A (en) | 2008-08-27 |
| CN101252813B true CN101252813B (en) | 2011-03-30 |
Family
ID=39955955
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|---|---|---|---|
| CN2008100232802A Active CN101252813B (en) | 2008-04-07 | 2008-04-07 | PTC thermal sensitive ceramic heating element |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009059873A1 (en) | 2009-12-21 | 2011-06-22 | Epcos Ag, 81669 | Varactor and method of making a varactor |
| CN102807367A (en) * | 2012-08-20 | 2012-12-05 | 刘小强 | Method for manufacturing PTC (positive temperature coefficient) ceramic |
| CN103265284B (en) * | 2013-05-22 | 2014-10-01 | 苏州新业电子有限公司 | High-voltage-resistant PTC (positive temperature coefficient) ceramic and preparation method thereof |
| CN109041284A (en) * | 2018-08-21 | 2018-12-18 | 宿州国威热敏新材料有限公司 | The heat sink strip and heating device and dedicated electric appliance of a kind of PTC thermo-sensitive material heating device |
| CN113443908A (en) * | 2020-03-27 | 2021-09-28 | 兴勤电子工业股份有限公司 | Ceramic composition, ceramic sintered body and multilayer ceramic electronic component |
| CN112694325A (en) * | 2020-12-22 | 2021-04-23 | 江苏钧瓷科技有限公司 | PTC thermistor ceramic material and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013618A (en) * | 2007-01-16 | 2007-08-08 | 杨敬义 | Leadless PTC thermistor material with high Curie point |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6430104A (en) * | 1987-07-24 | 1989-02-01 | Matsushita Electric Ind Co Ltd | Manufacture of ceramic material including lead |
| JPH0640768A (en) * | 1992-07-23 | 1994-02-15 | Inax Corp | Production of ptc ceramics having high characteristic |
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2008
- 2008-04-07 CN CN2008100232802A patent/CN101252813B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013618A (en) * | 2007-01-16 | 2007-08-08 | 杨敬义 | Leadless PTC thermistor material with high Curie point |
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Effective date of registration: 20160523 Address after: Sichuan Bu Lu Yixing Dingshu 214200 Jiangsu city of Wuxi Province Patentee after: WUXI GUOWEI CERAMIC ELECTRICAL APPLIANCES CO., LTD. Address before: Yixing City, Jiangsu province 214221 dingshuzhen Tong Shu Road Yixing Guowei ceramic electrical appliance Co. Ltd. Patentee before: Jiang Guoping |