Raws li qhov kev hloov pauv ntawm cov roj carbonization, cov ntsiab lus ntawm silica gel nce ntxiv, tom qab ntawd cov dej ntws tawm dawb thiab ua kom lub cev qhuav dej ntawm cov kua roj silica rau hauv cov khoom kom coagulate thiab tawv.
1. Qeeb. Txij li cov ntsiab lus ntawm CO2 nyob rau hauv cov huab cua tsis tshua muaj, cov tshuaj tiv thaiv carbonization thiab tag nrho cov kev nkag thiab cov txheej txheem solidification tau qeeb heev.
2. Ntim shrinkage.
3. Tsawg zog.
Txhawm rau kom nrawm dua qhov coagulation thiab solidification ceev ntawm cov dej iav thiab txhim kho lub zog, feem ntau yuav tsum siv tus neeg sawv cev rau cov tshuaj sodium fluorosilicate hauv kev siv dej iav, thiab cov tshuaj molecular yog Na2SiF6.
Tus nqi ntawm sodium fluorosilicate feem ntau yog li ntawm 12% mus rau 15%. Qhov ntau npaum li cas yog qhov me, qhov coagulation thiab solidification yog qeeb, thiab lub zog yog tsawg; yog tias qhov nyiaj tau ntau dhau lawm, qhov coagulation hardening nrawm dua, kev tsim kho ua haujlwm tsis yooj yim, thiab lub zog thaum pib tom qab cov tawv tawv yog siab, tab sis lub zog lig pom tseeb txo. Yog li, qhov ntau npaum li cas ntawm cov tshuaj tua kab mob yuav tsum muaj kev tswj xyuas nruj thaum lub sijhawm siv, thiab nws yuav tsum tau kho kom tsim nyog raws li cov saum toj no raws li qhov ntsuas kub, av noo, qauv thiab qhov ntom ntawm cov iav dej. Ntawd yog: qhov ntsuas kub yog siab, hom qauv loj heev, thiab txoj cai qis dua yog xaiv thaum lub ntsuas ntom yog qhov tsawg, thiab hloov rov qab.
Instant hmoov
Instant hmoov sodium silicate tseem tseem hu ua saponin sai thiab hydrated sodium silicate. Cov khoom yog dawb nyob rau hauv tsos, powdery thiab muaj zoo uniformity. Nws yooj yim heev rau kev thauj, khaws cia thiab siv, tshwj xeeb tshaj yog haum rau kev siv tshuab thiab kho tshuab. Siv dav hauv metallurgy, lub zog siv hluav taws xob, petrochemical thiab lub tsev cov ntaub ntawv kev lag luam. Nws yog siv raws li phau ntawv qhia nyob rau hauv qhov chaw kho kom tsis muaj zog, tshuaj ntxuav kom huv, tshuaj tiv thaiv kab mob, kev tiv thaiv kab mob kom sai thiab ntxiv cov kab mob hauv cov xab npum thiab kua qaub-ua kom zoo, kev ua kom zoo nkauj kev lag luam thiab kev lag luam precision kev lag luam. Cov hmoov tshuaj sodium tam sim ntawd kuj muaj tag nrho cov khoom thiab kev siv ua kua saponin. Cov hmoov tshuaj sodium tam sim sai muaj cov tshuaj molecular ntawm Na2O · mSiO2 · nH2O, thiab tus nqi feem ntau yog nyob nruab nrab ntawm 280 thiab 350. Piv nrog cov anhydrous hmoov sodium silicate uas yog mechanically pulverized, tus qub muaj ntau yam khoom muaj txiaj ntsig xws li dej yaj tus nqi thiab kev coj huv. Cov tshuaj ua kom tiav cov kua sodium silicate yog cov khoom siv tshuaj zoo, uas tau los ntawm cov txheej txheem qhuav (Glauber txoj kev ntsev, cov kua dej qab zib txoj kev), saponin los ntawm kev ua tshuaj lom neeg, kev lim dej, kev hloov mould, tshuaj tsuag kom qhuav thiab lwm yam.