Púdar Ocsaíde Sinc Grád Varistor
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Púdar Ocsaíde Sinc Grád Varistor

MST varistor grade zinc oxide powder has good thermal stability and thermal conductivity, high boiling point and low thermal expansion coefficient. The band gap is 3.2-3.4eV. ZnO should be an insulator at room temperature. ZnO is decomposed at high temperature. Excessive zinc enters the gap due to ionization, forming interstitial ions, causing shared movement of electrons in the structure, forming an n-type semiconductor, which is an important raw material for the production of zinc oxide varistors.

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Cur síos ar an Táirge

Púdar ocsaíd since grád Varistor

Tá cobhsaíocht theirmeach maith agus seoltacht theirmeach, fiuchphointe ard agus comhéifeacht leathnú teirmeach íseal ag púdar ocsaíd since grád varistor MST. Is é bearna an bhanda 3.2-3.4eV. Ba chóir go mbeadh ZnO ina inslitheoir ag teocht an tseomra. Déantar ZnO a dhianscaoileadh ag teocht ard. Téann since iomarcach isteach sa bhearna mar gheall ar ianú, ag cruthú iain interstitial, ag cruthú gluaiseacht roinnte leictreon sa struchtúr, ag cruthú leathsheoltóra de chineál n, atá ina amhábhar tábhachtach chun varistors ocsaíd since a tháirgeadh.

  

Ainm Táirge

Ocsaíd since

Foirmle mhóilíneach

ZnO

CAS NO

1314-13-2

EINECS UIMH

215-222-5

Dlús

5.606g / cm3

Molecular weight

81.38

Leáphointe

1975℃

Pointe Fiuchta:

2360ºC

Íonachta

0.99

Ábhar substaintí gníomhacha

0.997

CÓD H.S.

2817001000

Appearance

White powder or crystal

 

Buntáistí varistor déanta as púdar ocsaíd since grád varistor:

* Varistor semiconductor ceramics refer to semiconductor ceramics whose resistance value has a significant nonlinear relationship with the applied voltage. It becomes a varistor after adding electrodes when in use. Varistors are widely used in overvoltage protection and voltage stabilization.

* Tá dhá phríomhchineál ábhar leathsheoltóra ann chun varistors a dhéanamh: SiC agus ZnO. Díorthaítear tréithe neamhlíneach I-V an dá chineál athraitheora seo ón mbacainn teorann gráin sa chorp ceirmeach. I gcomparáid le SiC varistor, tá feidhmíocht uathúil den scoth ag varistor ZnO cosúil le comhéifeacht neamhlíneach mór, am freagartha gairid, voltas iarmharach íseal, comhéifeacht teocht voltais bheag, agus sruth sceite beag. Dá bhrí sin, úsáidtear é i gciorcaid leictreonacha agus i bhfearais tí. I réimse na cobhsaíochta voltais agus na cosanta ró-voltais ar chórais chumhachta, tá ról lárnach ag forbairt agus cur i bhfeidhm na n-athróg ZnO.

* The performance of ZnO varistor made from varistor grade zinc oxide powder depends on its microstructure and product size. Its microstructure is often caused by the type and amount of dopants added, and the powder preparation process. The size, size distribution, shape, uniformity, etc. are determined by factors such as sintering process, calcination temperature, calcination time, heating and cooling speed. By optimizing these factors, the performance of the ZnO varistor made of varistor grade zinc oxide powder can be improved.

Mír


Zinc oxideï¼ZZ0 á ríomh mar ábhar tirim)% â ‰ ¥

99.7

Ocsaíd photaisiam (K)% â ‰ ¤

0.001

Ocsaíd sóidiam (K)% â ‰ ¤

0.001

Ocsaíd ferric (Fe)% â ‰ ¤

0.002

Cadmium oxide (Cd)%≤

0.001

Lead oxide(Pb)%≤

0.005

Ocsaíd chopair (Cu)% â ‰ ¤

0.0002

Ábhar miotailïas Zn)% â ‰ ¤

NONE

moisture%

0.3

Ábhar Dothuaslagtha i Hci% â ‰ ¤

0.004

Caillteanas ar adhainte% â ‰ ¤

0.2

PH

7.0-8.0

The average particle size(D50)um ≤

0.5

Residue on sieve (44um)% ≤

0.1

 

Is féidir varistors ocsaíd since déanta as púdar ocsaíd since grád varistor a roinnt ina voltas íseal agus ardvoltas de réir a dtimpeallachta iarratais.

* Úsáidtear athróga ísealvoltais déanta as púdar ocsaíd since grád varistor go príomha i dtrealamh micreictreonaic, modúil chiorcaid chomhtháite i malartuithe teileafóin, agus borradh trasraitheora;

* Úsáidtear varistors ardvoltais déanta as púdar ocsaíd since grád varistor go príomha i gcórais tarchuir cumhachta ardvoltais agus ultra-ardvoltais, cosaint oibríochta ar threalamh mór, agus cosaint ró-voltais atmaisféarach.

Clibeanna te: Varistor Grade Zinc Oxide Powder, Manufacturer, Supplier, Factory, China, Wholesale, Buy, Price

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