Txoj hauv kev siv kab xev ua ntej siv thawj thaj teb ntawm papermaking, xim thiab plastics. Nws yog tshuab moulding nrog keeb kwm ntev. Nws muaj cov yam ntxwv ntawm cov khoom siv yooj yim, kev ua haujlwm tsis tu ncua, kev ua hauj lwm ntau lawm, thiab cov khoom sib xws ntawm lub cev ntsuab. Nrog rau kev tshawb nrhiav thiab kev siv thev naus laus zis, txoj kev siv lub tshuab xev thev naus laus zis tau dhau los ua txoj hauv kev tsim khoom thiab npaj alumina ceramic substrates thiab txhuas nitride ceramic substrates. Ntawm lawv, cov dej-siv kab xev casting thiab dej-dej gel kab xev casting yog ob qho tag nrho.
Process Dej raws Daim Kab Xev Txheej txheem txheej txheem
Dej-raws kab xev casting slurry yog ib qhov ua haujlwm nyuaj, feem ntau yog tsim los ntawm cov hmoov av ceramic, dej, dispersant, phau ntawv, yas thiab lwm yam ntxiv rau. Cov dej-siv kab xev casting kev kov yeej ntau qhov tsis zoo ntawm cov organic casting system, xws li kev tiv thaiv ib puag ncig, tus nqi siab, thiab cov khoom lag luam tiav ntom ntom ntom ntom, thiab tsim nyog rau kev teev loj. Txawm li cas los xij, dej raws li cov ntaub qhwv ntsej muag muaj cov teeb meem loj li nram no: cov kuab tshuaj evaporation tsawg tsawg; tus seem shrinkage yog loj thaum lub ntsiab lus binder yog siab; cov hmoov ntxiv ntau agglomerated vim tias muaj cov ntawv cog lus hydrogen; seem yog rhiab rau qhov hloov pauv hauv cov txheej txheem cov txheej txheem, qhov zoo ntawm zaj duab xis yog tsawg; cov seem yog nkig thiab yooj yim kom tawg thaum qhuav.
Process Dej raws Gel Daim Kab Xev Txheej Txheem Ua tiav
Cov txheej txheem dej-gel gel casting txheej txheem yog siv txoj cai ntawm cov organic monomer polymerization rau casting. Hauv cov qauv no, cov hmoov av ua kom zoo nkauj, cov khoom tawg yooj yim thiab cov yas ntim tau ntxiv rau cov tshuaj sib xyaw ua ke ntawm cov organic monomer thiab tus neeg sawv cev sib txuas los npaj cov kev sib xyaw nrog cov viscosity tsawg thiab lub siab ntim ntim feem (ntim feem ntau tshaj 50%). Tom qab ntawd ntxiv cov pib thiab catalyst, qhov kub thiab txias tau tswj hwm thiab monomer yog pib ua polymerize, yog li ntawd qhov viscosity ntawm qhov kev ncua nce, kom nyob rau hauv-situ solidification thiab molding tshwm sim, thiab thaum kawg ib lub cev nrog lub zog thiab tsim nyog rau kev siv lub tshuab yog npaj.
