Hmoov Wollastonite tau dhau los ua ib qho khoom siv tseem ceeb hauv cov khoom siv hluav taws xob rwb thaiv tsev, muab kev txhim kho kev ua tau zoo rau cov khoom siv hluav taws xob siab xws li transformers, circuit breakers, thiab insulator bushings. Nws qhov kev sib xyaw ua ke ntawm kev huv siab, kev poob dielectric qis, thiab kev ruaj khov thermal ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau kev rwb thaiv tsev hluav taws xob txhim khu kev qha thiab kev tso cua sov.
Lub zog dielectric - qhov siab tshaj plaws ntawm lub zog hluav taws xob uas cov khoom siv tuaj yeem tiv taus yam tsis muaj kev tawg tau zoo dua hauv cov khoom siv ceramics uas muaj hmoov wollastonite. Nrog rau qib purity feem ntau tshaj 95% CaSiO3 thiab cov khoom tsis muaj zog conductive tsawg (xws li hlau thiab sodium), wollastonite pab tswj kev tiv thaiv rwb thaiv tsev siab txawm tias ntawm qhov hluav taws xob tshaj 10kV. Thaum sib xyaw ua ke hauv cov khoom siv ceramic matrices (feem ntau ua ke nrog alumina lossis magnesia), nws cov khoom me me tsim txoj hauv kev tortuous rau tam sim no hluav taws xob, tiv thaiv arcing thiab ua kom muaj kev ua haujlwm ruaj khov hauv cov chaw muaj hluav taws xob siab. Qhov no ua rau wollastonite-enhanced ceramics haum rau cov ntawv thov tseem ceeb uas qhov kev ua tsis tiav ntawm rwb thaiv tsev yuav ua rau cov khoom siv puas tsuaj lossis muaj kev phom sij rau kev nyab xeeb.
Kev txo qhov porosity yog lwm qhov txiaj ntsig tseem ceeb ntawm wollastonite hmoov hauv cov khoom siv hluav taws xob ceramics. Thaum lub sijhawm sintering, nws cov khoom me me (5-20 microns) puv qhov sib txawv ntawm cov khoom ceramic loj dua, txhawb kev sib sau ua ke thiab txo qhov voids. Cov qauv microstructure ntom ntom no tsis yog tsuas yog txhim kho lub zog kho tshuab (txo kev tawg thaum tuav thiab ua haujlwm) tab sis kuj tiv thaiv cov dej noo thiab roj nkag mus - cov yam uas tuaj yeem ua rau cov khoom rwb thaiv tsev puas tsuaj dhau sijhawm. Rau cov insulators sab nraum zoov uas raug nag, av noo, thiab kuab paug, qhov porosity qis no yog qhov tseem ceeb rau kev tswj hwm kev ua haujlwm dielectric mus sij hawm ntev.
Kev ua kom muaj cua sov zoo dua hauv cov khoom siv ceramic uas muaj wollastonite, daws qhov teeb meem tseem ceeb hauv cov khoom siv hluav taws xob siab uas tsim cua sov ntau thaum lub sijhawm ua haujlwm. Nrog rau kev ua kom muaj cua sov ntawm kwv yees li 3 W / m·K (siab dua li ntau cov khoom siv ceramic ib txwm muaj), wollastonite txhim kho kev hloov pauv cua sov ntawm cov khoom siv hluav taws xob, pab tswj kom muaj qhov kub thiab txias ruaj khov. Lub peev xwm tswj cua sov no ua rau lub neej ntawm cov khoom siv ntev dua los ntawm kev tiv thaiv kev puas tsuaj ntawm cov rwb thaiv tsev los ntawm cua sov, tshwj xeeb tshaj yog qhov tseem ceeb hauv cov transformers thiab cov khoom siv faib hluav taws xob uas qhov kub dhau heev tuaj yeem ua rau muaj kev puas tsuaj loj heev.
Kev ruaj khov ntawm qhov kub siab ua kom cov wollastonite-enhanced ceramics ua haujlwm tau zoo hauv qab kev hloov pauv thermal. Cov mineral khaws nws cov qauv thiab cov khoom ntawm qhov kub txog li 1500 ° C, tiv taus qhov kub siab uas ntsib thaum lub sijhawm tsim khoom (sintering) thiab hauv kev pabcuam. Qhov kev ruaj khov no tiv thaiv kev hloov pauv theem lossis kev nthuav dav thermal mismatches uas tuaj yeem tsim kev ntxhov siab sab hauv lossis tawg, ua kom ntseeg tau tias qhov ntev thiab kev ua tau zoo sib xws thoob plaws qhov kub sib txawv.
Cov txiaj ntsig ntawm kev ua cov hmoov wollastonite yooj yim rau kev sib xyaw rau hauv cov qauv ceramic. Nws txhim kho lub zog ntsuab (lub zog ntawm cov ceramics tsis tau hlawv), txo qhov tawg thaum lub sijhawm puab thiab tuav. Nws qhov nqus dej tsawg ua rau cov txheej txheem ziab yooj yim, thaum nws sib xws nrog cov khoom siv ceramic feem ntau ua kom muaj kev sib xyaw thiab 成型 (kev tsim). Rau cov duab nyuaj xws li cov discs insulator lossis cov blocks terminal, wollastonite cov khoom ntws thaum lub sijhawm molding pab tswj qhov tseeb ntawm qhov ntev, txo qhov yuav tsum tau ua tom qab ua tiav.
Kev tswj xyuas zoo yog qhov tseem ceeb rau cov hmoov wollastonite qib hluav taws xob. Cov neeg muag khoom yuav tsum kuaj xyuas lub zog dielectric, qhov loj me ntawm cov khoom me me, thiab cov qib tsis huv, kom ntseeg tau tias ua raws li cov qauv kev lag luam xws li IEC (International Electrotechnical Commission) cov lus qhia. Kev kho qhov chaw nrog cov neeg sawv cev sib txuas yuav siv tau los txhim kho kev sib txuas nrog cov ceramic matrices, txhim kho cov khoom siv kho tshuab thiab hluav taws xob.
Lub sijhawm tshaj tawm: Lub Yim Hli-13-2025
