1. Silica Sol yog dab tsi
Silica sol, tseem hu ua colloidal silica, yog ib qho ruaj khov dispersion ntawm submicron amorphous silica hais hauv dej. Nws yog siv nyob rau hauv peev casting, refractory binders, coatings, polishing slurries thiab catalyst txhawb. Lub sol yog tus cwj pwm los ntawm nws qhov loj me, qhov siab, pH thiab ruaj khov, uas ua ke txiav txim siab nws tus cwj pwm hauv txhua daim ntawv thov.
2. Chemistry ntawm Kev Npaj
Silica sol tuaj yeem npaj los ntawm silicon hlau hmoov los ntawm kev hloov cov silicon rau hauv silicic acid, uas tom qab ntawd condenses rau hauv cov khoom sib xyaw. Cov hmoov silicon reacts nyob rau hauv ib qho alkaline los yog acidic nruab nrab los tsim cov soluble silicate hom, thiab cov tswj condensation ntawm cov tsiaj no ua ib feem ntawm lub hom phiaj loj. Cov tshuaj tiv thaiv tej yam kev mob, kub thiab catalyst tswj particle loj hlob.
3. Txoj Kev Alkaline
Nyob rau hauv txoj kev alkaline, silicon hlau hmoov yog digested nyob rau hauv ib tug kub alkali tov, ua soluble silicate. Cov tshuaj silicate ces conditioned los ntawm ion pauv los yog tswj neutralization kom tshem tawm ntau tshaj cations thiab kho cov pH, cia cov silica rau condense mus rau hauv ruaj khov colloidal hais. Cov txheej txheem muab tswj particle loj thiab zoo stability ntawm alkaline pH.
4. Txoj Kev Acidic thiab Particle Control
Nyob rau hauv txoj kev acidic, silicon yog reacted rau silicic acid nyob rau hauv acid tej yam kev mob, thiab lub condensation yog tswj los ntawm kub thiab pH kom loj hlob hais tias ib tug loj npaum li cas. Qhov loj me thiab qhov concentration yog tswj los ntawm lub sij hawm tshuaj tiv thaiv, qhov kub thiab txias, silicon - mus rau - dej piv thiab ntxiv cov stabilizers. Cov khoom loj dua muab cov khib nyiab ntau dua ntawm cov viscosity qis, thaum cov khoom me me muab kev nkag tau zoo dua thiab kev sib txuas.
5. Purification thiab Concentration
Cov kua roj nyoos muaj los ntawm - cov khoom siv ntsev uas yuav tsum tau muab tshem tawm rau feem ntau cov ntawv thov. Ion pauv thiab ultrafiltration tshem tawm cov ntsev thiab mloog zoo rau cov ntsiab lus ntawm lub hom phiaj, feem ntau 20 mus rau 50%. Cov khoom kawg yog stabilized, lim thiab ntim rau hauv cov thawv uas tiv thaiv nws los ntawm khov thiab paug.
6. Cov ntawv thov
Kev nqis peev casting plhaub binders.
Refractory thiab ceramic binders.
Txheej thiab xim additives.
Precision polishing slurries.
Catalyst txhawb thiab kho cov ntawv.
7. FAQ
Q1: Dab tsi yog silica sol?Ib qho ruaj khov dispersion ntawm submicron amorphous silica hais hauv dej, siv los ua cov ntawv khi thiab hauv cov coatings, casting thiab polishing.
Q2: Yuav ua li cas yog silica sol ua los ntawm silicon hmoov?Cov silicon hloov mus rau soluble silicate los yog silicic acid, uas condenses nyob rau hauv kev tswj tej yam kev mob rau hauv colloidal hais.
Q3: Dab tsi tswj qhov particle loj?Lub sijhawm tshuaj tiv thaiv, qhov kub thiab txias, pH, silicon - mus rau - dej piv thiab stabilizers.
Q4: Vim li cas thiaj xav tau kev lim dej?Los ntawm - cov khoom ntsev yuav tsum raug tshem tawm los ntawm kev sib pauv ion lossis ultrafiltration rau feem ntau cov ntawv thov.
Q5: Dab tsi yog cov ntsiab lus ntawm cov khib nyiab?Feem ntau 20 mus rau 50% tom qab concentration.
Q6: Dab tsi yog silica sol siv rau?Peev casting plhaub, refractories, coatings, polishing slurries, catalyst txhawb thiab ntawv kho.
