CN107915482A - Ceramic electrical resistance body thermistor material and preparation method thereof - Google Patents

Ceramic electrical resistance body thermistor material and preparation method thereof Download PDF

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CN107915482A
CN107915482A CN201711149312.9A CN201711149312A CN107915482A CN 107915482 A CN107915482 A CN 107915482A CN 201711149312 A CN201711149312 A CN 201711149312A CN 107915482 A CN107915482 A CN 107915482A
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parts
electrical resistance
srco
resistance body
ceramic electrical
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江明泓
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SICHUAN QIXING ELECTRONICS CO Ltd
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SICHUAN QIXING ELECTRONICS CO Ltd
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    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
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    • C04B35/4682—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
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    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
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    • 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
    • H01C7/02—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 having positive temperature coefficient
    • H01C7/022—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 having positive temperature coefficient mainly consisting of non-metallic substances
    • H01C7/023—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 having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
    • 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
    • H01C7/02—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 having positive temperature coefficient
    • H01C7/022—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 having positive temperature coefficient mainly consisting of non-metallic substances
    • H01C7/023—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 having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
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Abstract

The invention discloses ceramic electrical resistance body thermo-sensitive material and preparation method thereof, it is made of the component of following parts by weight：BaTiO350 80 parts；SrCO320 30 parts；TiO258 parts；SiO28 12 parts；Y2O323 parts；Cr2O36 10 parts；SrCO320 30 parts；CeO28 12 parts, greatly enhance resistance material stability, reliability；And once sintered shaping is adopted, process is greatly simplify, is conveniently mass produced.

Description

Ceramic electrical resistance body thermistor material and preparation method thereof
Technical field
The present invention relates to thermistor material technical field, more particularly, to ceramic electrical resistance body thermo-sensitive material and its preparation Method.
Background technology
Positive temperature coefficient (PTC) thermistor has when temperature is relatively low that resistance value is relatively low, and temperature rises to certain journey The characteristic that resistance steeply rises when spending, sometimes reaches the order of magnitude of more than 3~4；Therefore PTC passes through self-heating after being powered Temperature rises and causes resistance to increase, and limits electric current in circuit, has good security performance.With the hair of national economy Exhibition, positive temperature coefficient (PTC) thermistor element are widely used in household electrical appliances, communication, electronic equipment, electric component, temperature sensing With control, heating etc. field.Due to convertible frequency air-conditioner, low pressure instrument and communication apparatus use increasingly frequency in social production life Numerous, people are also higher and higher to its reliability requirement.Low-resistivity positive temperature coefficient temperature-sensitive general on kind equipment electricity at present Resistance uses conventional method：In BaTiO3In directly add SiO2Mutually reduce resistivity as glass, shortcoming be sintering temperature compared with Height, reliability is relatively low, can only be used below in 30V, and requirement is not adapted to more and more under current demand.
The content of the invention
It is reliable to solve existing thermistor the present invention provides ceramic electrical resistance body thermo-sensitive material and preparation method thereof The problem of property is low.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is summarized as follows：
A kind of ceramic electrical resistance body thermistor material, is made of the component of following parts by weight：
BaTiO350-80 parts；
SrCO320-30 parts；
TiO25-8 parts；
SiO28-12 parts；
Y2O32-3 parts；
Cr2O36-10 parts；
SrCO320-30 parts；
CeO28-12 parts.
Further, a kind of preparation method of ceramic electrical resistance body thermistor material comprises the following steps：
1) according to each raw material weight proportioning of soup processed, SrCO is weighed3、TiO2、SiO2、Y2O3、Cr2O3、SrCO3And CeO2And mix equal It is even；
2) added in the uniformly mixed raw material described in step 1) in Mn (NO3) 2 solution, then by raw material：Agate ball： Deionized water=1: 1.5: 2 ball milling 8-10h in the ball mill, obtain slurry；
3) BaTiO is weighed by weight ratio3, and add BaTiO in the slurry described in step 2)3, stirring to mixing is It is even, then add poly-vinyl alcohol solution and binding agent is uniformly mixed to obtain binding paste；
4) binding paste described in step 3) is granulated, and dry-pressing formed obtained embryo piece；
5) the embryo piece described in step 4) is subjected to dumping processing, then sinters 50min at 1100 DEG C -1200 DEG C, obtain Resistance material.
Further, the binding agent is PVA, and the 1%-3% that usage amount is total inventory.
Further, the Mn (NO3)2The mass percent concentration of solution is 50%, Mn (NO3)2The weight that solution uses It is 4-6 parts to measure part.
Further, the dry-pressing formed pressure is 140MPa-180MPa.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
Compare tradition and use SiO merely2The PTC ceramics sintering temperature of glass phase is done at 1250~1400 DEG C, PTC of the invention Ceramic thermistor material can reduce more than 100 DEG C, manufacture craft is simple, greatly reduces in 1100 DEG C of -1200 DEG C of sintering Piezoresistive material cost, and without harmful elements such as Pb, meet energy-saving and environment-friendly requirement, there is practicality And application prospect；Obtained material has high pressure, aftercurrent is small, power is low, safe to use, reliability is high, long lifespan etc. Feature, has a vast market prospect.
Embodiment
The present invention is described in further detail with reference to embodiment.Embodiments of the present invention are included but not It is limited to the following example.
Embodiment 1
A kind of ceramic electrical resistance body thermistor material, corresponding raw material is weighed by following weight proportion：BaTiO350 parts； SrCO320 parts；TiO25 parts；SiO28 parts；Y2O32 parts；Cr2O36 parts；SrCO320 parts；CeO28 parts.
Prepare：1) by SrCO3、TiO2、SiO2、Y2O3、Cr2O3、SrCO3And CeO2It is uniformly mixed；
2) Mn (NO that 4 parts of mass percent concentrations are 50% are added in the uniformly mixed raw material obtained by step 1)3)2 In solution, then by raw material：Agate ball：Deionized water=1: 1.5: 2 ball milling 8h in the ball mill, obtain slurry；
3) BaTiO is added in the slurry obtained by step 2)3, stir to being uniformly mixed, then add poly-vinyl alcohol solution And account for 1% PVA of total inventory and be uniformly mixed to obtain binding paste；
4) binding paste obtained by step 3) is granulated, and the dry-pressing formed obtained embryo piece under 140MPa pressure；
5) the embryo piece obtained by step 4) is subjected to dumping processing, then sinters 50min at 1100 DEG C, obtain resistance material Material.
Embodiment 2
A kind of ceramic electrical resistance body thermistor material, corresponding raw material is weighed by following weight proportion：BaTiO360 parts； SrCO325 parts；TiO27 parts；SiO210 parts；Y2O32.8 part；Cr2O39 parts；SrCO328 parts；CeO211 parts.
Prepare：1) by SrCO3、TiO2、SiO2、Y2O3、Cr2O3、SrCO3And CeO2It is uniformly mixed；
2) Mn (NO that 5 parts of mass percent concentrations are 50% are added in the uniformly mixed raw material obtained by step 1)3)2 In solution, then by raw material：Agate ball：Deionized water=1: 1.5: 2 ball milling 9h in the ball mill, obtain slurry；
3) BaTiO is added in the slurry obtained by step 2)3, stir to being uniformly mixed, then add poly-vinyl alcohol solution And account for 2% PVA of total inventory and be uniformly mixed to obtain binding paste；
4) binding paste obtained by step 3) is granulated, and the dry-pressing formed obtained embryo piece under 150MPa pressure；
5) the embryo piece obtained by step 4) is subjected to dumping processing, then sinters 50min at 1150 DEG C, obtain resistance material Material.
Embodiment 3
A kind of ceramic electrical resistance body thermistor material, corresponding raw material is weighed by following weight proportion：BaTiO380 parts； SrCO330 parts；TiO28 parts；SiO212 parts；Y2O33 parts；Cr2O310 parts；SrCO330 parts；CeO212 parts.
Prepare：1) by SrCO3、TiO2、SiO2、Y2O3、Cr2O3、SrCO3And CeO2It is uniformly mixed；
2) Mn (NO that 6 parts of mass percent concentrations are 50% are added in the uniformly mixed raw material obtained by step 1)3)2 In solution, then by raw material：Agate ball：Deionized water=1: 1.5: 2 ball milling 10h in the ball mill, obtain slurry；
3) BaTiO is added in the slurry obtained by step 2)3, stir to being uniformly mixed, then add poly-vinyl alcohol solution And account for 3% PVA of total inventory and be uniformly mixed to obtain binding paste；
4) binding paste obtained by step 3) is granulated, and the dry-pressing formed obtained embryo piece under 180MPa pressure；
5) the embryo piece obtained by step 4) is subjected to dumping processing, then sinters 50min at 1200 DEG C, obtain resistance material Material.
It is the embodiment of the present invention as described above.The present invention is not limited to the above-described embodiments, anyone should learn that The structure change made under the enlightenment of the present invention, the technical schemes that are same or similar to the present invention, each fall within this Within the protection domain of invention.

Claims (5)

1. a kind of ceramic electrical resistance body thermistor material, it is characterised in that be made of the component of following parts by weight：
BaTiO350-80 parts；
SrCO320-30 parts；
TiO25-8 parts；
SiO28-12 parts；
Y2O32-3 parts；
Cr2O36-10 parts；
SrCO320-30 parts；
CeO28-12 parts.
A kind of 2. preparation method of ceramic electrical resistance body thermistor material as claimed in claim 1, it is characterised in that including Following steps：
1) according to each raw material weight proportioning of soup processed, SrCO is weighed3、TiO2、SiO2、Y2O3、Cr2O3、SrCO3And CeO2And it is uniformly mixed；
2) Mn (NO are added in the uniformly mixed raw material described in step 1)3)2In solution, then by raw material：Agate ball：Go from Sub- water=1: 1.5: 2 ball milling 8-10h in the ball mill, obtain slurry；
3) BaTiO is weighed by weight ratio3, and add BaTiO in the slurry described in step 2)3, stir to being uniformly mixed, so Add poly-vinyl alcohol solution afterwards and binding agent is uniformly mixed to obtain binding paste；
4) binding paste described in step 3) is granulated, and dry-pressing formed obtained embryo piece；
5) the embryo piece described in step 4) is subjected to dumping processing, then sinters 50min at 1100 DEG C -1200 DEG C, obtain resistance Material.
3. the preparation method of ceramic electrical resistance body thermistor material as claimed in claim 2, it is characterised in that the bonding Agent is PVA, and the 1%-3% that usage amount is total inventory.
4. ceramic electrical resistance body thermistor material as claimed in claim 2, it is characterised in that the Mn (NO3)2Solution Mass percent concentration is 50%, Mn (NO3)2The parts by weight that solution uses are 4-6 parts.
5. ceramic electrical resistance body thermistor material as claimed in claim 2, it is characterised in that the dry-pressing formed pressure is 140MPa-180MPa。
CN201711149312.9A 2017-11-18 2017-11-18 Ceramic electrical resistance body thermistor material and preparation method thereof Pending CN107915482A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109160813A (en) * 2018-09-20 2019-01-08 华蓥市职业教育培训中心 A kind of thermistor material and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109160813A (en) * 2018-09-20 2019-01-08 华蓥市职业教育培训中心 A kind of thermistor material and preparation method thereof

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Application publication date: 20180417