CN1349951A - Composite powder for intelligent element and its production process - Google Patents

Composite powder for intelligent element and its production process Download PDF

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Publication number
CN1349951A
CN1349951A CN 00116195 CN00116195A CN1349951A CN 1349951 A CN1349951 A CN 1349951A CN 00116195 CN00116195 CN 00116195 CN 00116195 A CN00116195 A CN 00116195A CN 1349951 A CN1349951 A CN 1349951A
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China
Prior art keywords
powder
composite powder
intelligent element
production method
gram
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Pending
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CN 00116195
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Chinese (zh)
Inventor
禹争光
张安平
肖松林
张卫红
胡建生
陈昭祥
任培
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DAYU FUNCTIONAL MATERIAL Co Ltd CHENGDU
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DAYU FUNCTIONAL MATERIAL Co Ltd CHENGDU
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Priority to CN 00116195 priority Critical patent/CN1349951A/en
Publication of CN1349951A publication Critical patent/CN1349951A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an intelligent element composite powder and its production method. It adopts the multiphase material flow impaction pulverization process to further disperse and activate mixed raw materials to prepare nano-level high-dispersity, composite powder. The composition of said composite powder is formed from (wt%) ZnO 80-88, Bi2O3 2-4, Co3O4 1.5-2, Mn2O4 0.5-3, Cr2O3 0.5-1, Sb2O3 1.5-2.5, TiO2 0.1-0.5, Al(NO3)39H2O 0.02-0.03, CaCO3 1-3, SrCO3 0.5-1, BaCO3 2-5, Fe2O3 0.05-0.1, ZrO2 0.01-0.02 and Pb2O3 0.5-1.5. Said nano-level powder body possesses good dispersion property and activity, can be extensively used for making several kinds of sensing material, in particular, it can be used for making lightning arrester valve plate pressure-sensitiive piezoelectric element.

Description

Composite powder for intelligent element and production method thereof
The present invention relates to information and electric power, electronic engineering intelligence sensor and use the material field.
Be used to produce the composite granule of pressure-sensitive, PTC, NTC, air-sensitive, wet quick, photosensitive, piezoelectric element at present, general all is behind the single powder of several 0.5-10 μ m granularities of element manufacturer outsourcing polycomponent powder mechanically mixing to be made, thereafter compressing tablet is sintered into sensor, there is significant disadvantages in the composite powder of this form, because coarse size, the blending dispersion degree of powder are poor, made sensor poor performance, qualification rate are low.Can obtain by methods such as thermolysis vapour depositions though produce high performance composite granule, adopting such method one is the production cost height, the 2nd, and recombination region is little, is difficult to produce the composite powder for intelligent element body that can satisfy multiple sensor needs.
Above shortcoming in view of prior art, the objective of the invention is to study a kind of composite powder for intelligent element, make it to have that production cost is low, powder dispersity good, can be widely used in multiple sensor, in particular for pressure-active element, make element have higher electric property.
Purpose of the present invention makes and realizes by following method.
Composite powder for intelligent element, behind accurate raw materials weighing powder, the method that adopts the multiple phase material flow bump to pulverize is clashed into the raw materials mixed powder and is further pulverized by self, powder is further disperseed, activates simultaneously and makes nano level high degree of dispersion composite powder in this process: described composite powder has following composition, expresses with weight percent:
ZnO?80-88?????Bi 2O 3?2-4?????Co 3O 4?1.5-2
Mn 3O 4?0.5-3???Cr 2O 3?0.5-1???Sb 2O 3?1.5-2.5
TiO 2?0.1-0.5??Al(NO 3) 39H 2O?0.02-0.03
CaCO 3?1-3??SrCO 3?0.5-1?BaCO 3?2-5??Fe 3O 3?0.05-0.1
ZrO 2?0.01-0.02??Pb 2O 3?0.5-1.5
After adopting above production method and respective components, impact fluid (air-flow or liquid stream) utilizes mechanical kinetic energy that particle is accelerated to very high linear velocity (generally can reach more than 340 meter per seconds), form no fix toward the reverse osmosis bump, complicated chemistry and physical change take place in knockout process, thereby the composite powder that material powder is made has good dispersiveness and sintering activity, the intelligent element that makes has good electric property, and the qualification rate of element improves greatly, and production cost reduces.
Embodiment 1
Material powder is restrained Bi by the accurate weighing of following component: ZnO 840 2O 330 grams, Co 3O 418 grams, Mn 3O 413 gram Cr 2O 35 gram Sb 2O 313 grams, TiO 23 grams, Al (NO 3) 39H 2O 0.25 gram, CaCO 32 gram SrCO 30.8 gram, BaCO 33 grams, Fe 3O 30.08 gram, ZrO 20.01 gram Pb 2O 30.9 gram, vitrification agent GF-1 0.4 gram, activator 0.5 gram.Put into 1000 ml container mixings.Shear in the activator and put into 450 ml deionized water.Start shear motor, rotating speed transfers to 10000 rev/mins, material powder is slowly added shear in the activator, finishes in reinforced about 5 minutes, and after remaining in operation 5 minutes, rotating speed transfers to 8000 rev/mins, and rotating speed transfers to 3000 rev/mins after 10 minutes.Stop to shear activation, discharging, vacuum filtration.Water ratio is gone into 26 hours 250 mesh sieves of coming out of the stove of 160-170 ℃ in steam baking oven baking less than 20% filter cake and is got finished product 920 grams.
Embodiment 2
Material powder is restrained Bi by the accurate weighing of following component: ZnO 800 2O 340 grams, Co 3O 420 grams, Mn 3O 430 gram Cr 2O 310 gram Sb 2O 325 grams, TiO 25 grams, Al (NO 3) 39H 2O 0.3 gram, CaCO 33 grams, SrCO 31 gram, BaCO 35 gram Fe 2O 30.1 gram, ZrO 20.02 gram, Pb 2O 31.5 gram GF-1 0.5 gram, activator 0.6 gram.All the other steps obtain finished product 918 grams at last with example 1.
Embodiment 3
Material powder is restrained Bi by the accurate weighing of following component: ZrO 880 2O 320 grams, Co 3O 415 grams, Mn 3O 45 grams, Cr 2O 35 grams, Sb 2O 35 grams, TiO 21 gram, Al (NO 3) 39H 2O 0.2 gram, CaCO 31 gram, SrCO 30.5 gram, BaCO 32 grams, Fe 2O 30.05 gram, Pb 2O 30.5 gram.GF-1 0.3 gram, activator 0.5 gram.All the other steps are with example 1, and ZnO substitutes with ZrO, obtain finished product 920 grams at last.
The voltage dependent resistor that the powder of producing by embodiment 1 makes and the electricity function index of arrester valve piece made are provided by table 1 and table 2 respectively, and qualification rate is 99%.
Table 1: voltage dependent resistor electric property table
Performance Model 8/20 μ s wave impact electric current (A) 2ms wave impact electric current (A)
Domestic standard MYG314K300 2500 40
The PANASONIC standard ER2V14D471 6000 125
Element of the present invention Same GB 6000 125
Table 2: lightning-arrest valve block electric property table
Project The tradition valve block Toshiba's valve block Valve block of the present invention
System voltage (KV) 168 168 168
Valve block diameter (mm) 47 47 47
Potential gradient (V/mm) 200 400 400
U 10KA/U NKAac 1.7(N＝I) 1.58(N＝1) 1.58(N＝1)
Square wave capacity (18 times/cm 3 180 300 300

Claims (7)

1. composite powder for intelligent element, composite powder has following composition, expresses with weight percent:
ZnO????80-88????Bi 2O 3????2-4????Co 3O 4????1.5-2
Mn 3O 4??0.5-3????Cr 2O 3????0.5-1??Sb 2O 3????1.5-2.5
TiO 2???0.1-0.3??Al(NO 3) 39H 2O????0.02-0.03
CaCO 3?1-3????SrCO 3?0.5-1????BaCO 3?2-5????Fe 2O 3?0.05-0.1
ZrO 2?0.01—0.02????Pb 2O 3?0.5-1.5
2. production method that is used for production claim 1 composite powder for intelligent element, it is characterized in that, behind accurate raw materials weighing powder, adopt method that polycomponent logistics bump pulverizes with the raw materials mixed powder by self bump and further pulverize, in this process powder further disperseed simultaneously, activation and make nano level high degree of dispersion composite powder;
3. the composite powder for intelligent element production method according to claim 2 is characterized in that, adding in the described material powder has activator and material powder together to pulverize, disperse.
4. the composite powder for intelligent element production method according to claim 2 is characterized in that, adding in the described material powder has GF-1 agent and material powder together to pulverize, disperse.
5. the composite powder for intelligent element production method according to claim 3 is characterized in that, the weight percent that adds activator in the described material powder is 0.05-0.06.
6. the composite powder for intelligent element production method according to claim 4 is characterized in that, adding GF-1 agent weight percent in the described material powder is 0.03-0.05.
7. the composite powder for intelligent element production method according to claim 2 is characterized in that, described logistics can be air-flow or liquid stream.
CN 00116195 2000-10-20 2000-10-20 Composite powder for intelligent element and its production process Pending CN1349951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 00116195 CN1349951A (en) 2000-10-20 2000-10-20 Composite powder for intelligent element and its production process

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Application Number Priority Date Filing Date Title
CN 00116195 CN1349951A (en) 2000-10-20 2000-10-20 Composite powder for intelligent element and its production process

Publications (1)

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CN1349951A true CN1349951A (en) 2002-05-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314620C (en) * 2003-04-25 2007-05-09 中国科学技术大学 Oxygen permeable film material of densified ceramics enhanced by perovskite typed oxide and oxygen spearator
US8142743B2 (en) 2009-06-25 2012-03-27 Industrial Technology Research Institute Method and apparatus for forming zinc oxide
CN105198402A (en) * 2015-09-15 2015-12-30 苏州亿馨源光电科技有限公司 Nano zinc oxide voltage-dependent resistor material and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314620C (en) * 2003-04-25 2007-05-09 中国科学技术大学 Oxygen permeable film material of densified ceramics enhanced by perovskite typed oxide and oxygen spearator
US8142743B2 (en) 2009-06-25 2012-03-27 Industrial Technology Research Institute Method and apparatus for forming zinc oxide
CN105198402A (en) * 2015-09-15 2015-12-30 苏州亿馨源光电科技有限公司 Nano zinc oxide voltage-dependent resistor material and preparation method thereof
CN105198402B (en) * 2015-09-15 2018-01-02 湖南双创部落信息咨询服务有限责任公司 A kind of Nanocrystalline Zno-based Varistor material and preparation method thereof

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