PTC cov txheej txheem tsim khoom thiab ntws ntawm PTC rhaub
1. Cov khoom xyaw
Tam sim no, feem ntau domestic thiab txawv teb chaws manufacturers siv cov khoom-theem synthesis technology. Cov khoom siv raw siv yog BaCO3, SrCO3, Pb3O4, TiO2, Nb2O5, MnCO3, SiO2 thiab lwm yam hmoov, thiab qhov purity feem ntau yuav tsum siab tshaj 99.5%. Lub purity ntawm raw cov ntaub ntawv, ntau yam thiab cov ntsiab lus ntawm impurities, tshuaj lom neeg kev ua si ntawm raw cov ntaub ntawv, thiab lwm yam. tag nrho cov muaj ib tug zoo heev cuam tshuam rau lub functionality ntawm PTC zaum kawg khoom. Qhov tseeb ntawm cov khoom xyaw kuj muaj txiaj ntsig zoo rau kev ua haujlwm ntawm cov khoom.
2. Pob zeb rhuav tshem thiab tshem tawm dej
Muab ob peb yam khoom hnyav hnyav, cov khoom sib tsoo, thiab dej ntshiab rau hauv lub pob zeb thiab rhuav tshem lawv, thiab sib tov sib npaug. Cov khoom siv pob zeb-milled tuaj yeem yooj yim muab tso rau hauv qhov cub kom qhuav, lossis lawv tuaj yeem qhuav tom qab dewatering siv pom, sib cais centrifugal, nqus pom thiab lwm yam txuj ci.
Peb, khoom theem synthesis
Solid-theem synthesis tseem hu ua pre-sintering, uas yog muab cov khoom sib xyaw ua ke rau hauv qhov cub kub kub rau cov tshuaj tiv thaiv los tsim cov khoom sib xyaw. Cov qauv dav dav ntawm cov khoom siv tuaj yeem sau tau raws li (Bax, Sry, Pbz)TiO3, qhov twg x+y+z=1, Qhov kub ntawm cov khoom sib txuas yog xaiv raws li cov khoom siv. thiab qhov sib piv ntawm 1000 ~ 1250 ℃, thiab lub sijhawm tuav yog 2 ~ 4 teev.
Plaub, lub pob zeb thib ob
Tom qab cov khoom sib xyaw ua ke, cov ntaub ntawv agglomerate thiab qee cov khoom siv lead ua loj tuaj, uas yuav tsum tau muab pov tseg los ntawm pob milling los pab txhawb kev tua. Cov txheej txheem ntawm ob lub pob milling yog zoo ib yam li lub pob milling ua ntej synthesis.
Tsib, tsim
PTC cov ntaub ntawv tuaj yeem ua rau ntau hom, xws li: puag ncig, square, honeycomb thiab lwm yam. Cov khoom zoo li cov ntawv yog tsim los ntawm kev nias qhuav, thiab cov kua nplaum PVA ntxiv rau cov khoom siv. Tom qab ntawd daim ntawv yog granulated los ntawm txoj kev sieving los yog tshuaj tsuag kom qhuav txoj kev, thiab ces nias-tsim ntawm lub tshuab xuas nrig ntaus. Cov ntsiab lus honeycomb yog tsim los ntawm cov txheej txheem extrusion.
Rau, tua
Muab cov ntawv ntsuab tsim rau hauv lub qhov cub kub, thiab raws li qhov tsim nyog tua hluav taws, tua cov khoom siv hluav taws xob semiconductor nrog cov yam ntxwv ntawm PTC. Qhov hluav taws xob nkhaus thiab hluav taws xob hluav taws xob muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov khoom, yog li nws yuav tsum tau tswj nruj me ntsis hauv kev tsim khoom los txhim kho cov khoom ua haujlwm thiab cov khoom lag luam.
