Silica sol yog ib qho kev daws teeb meem hauv cov silicoidal ntawm silicon dioxide yog discersed hauv dej, tseem hu ua Silica Dol lossis silica hydrosol. Nws yog feem ntau milky dawb lossis lub teeb xiav kev daws teeb meem hauv cov tsos. Feem ntau ntawm lawv yog ruaj khov alkaline, thiab ob peb yog acidic. Cov concentration ntawm sio2 hauv Silica sol yog feem ntau 1 {0}%, thiab tuaj yeem ncav 50% thaum lub siab. Thaj chaw tshwj xeeb thaj tsam ntawm Silica sol hais yog 50 ~ 400M2 / g, thiab cov particle loj li cas yog feem ntau 5 ~ 100nm, uas yog, ntawm nanometer nplai. Piv nrog rau cov dav dav nrog ib tug particle loj ntawm 0.1 ~ 10.7μm, nws cov lus yog qhov me dua.
Cov txheej txheem ntau lawm ntawm Silica Sollica yog suav nrog cov qauv hauv qab no los kho cov kua dej qab zib kom huv si los kho sodium ions los ntawm kev daws. Ion pauv cov resins feem ntau yog hla cov organic polymers muaj cov pab pawg acidic xws li sulfonic acid thiab cov pab pawg carboxyl. H + ions hauv cov txheej txheem no tuaj yeem yog ionized thiab sib pauv nrog lwm txoj hauv paus kom tau txais silica sol.
Sulfuric acid kev tswj hwm: Cov qauv no siv cov sulfuric dilutic acid rau nruab nrab sol los tswj cov ph, kub thiab lwm yam kev daws teeb meem ntawm kev daws. Nyob rau hauv cov xwm txheej tsim nyog, cov roj siv lead ua ntxiv, thiab tom qab ntawd cov khoom lag luam sillica tuaj yeem tau txais los ntawm kev kub siab thiab kev ua kom huv. Tag nrho cov txheej txheem yuav tsum tau tswj cov txheej txheem xws li NA + qhov kev daws teeb meem, qhov kub kub, ph ntawm kev daws teeb meem thiab lwm lub sijhawm. Kev siv tshuab hluav taws xob electrodialysis txoj kev: Cov txheej txheem no npaj Silica Sol los ntawm kev siv hluav taws xob.
Cov ntaub ntawv roj hluav taws xob tau ntxiv rau cov khoom siv hluav taws xob hluav taws xob, thiab cov khoom siv ceev, thiab lwm yam ntawm cov tshuaj tiv thaiv hluav taws xob, thiab lwm yam ntawm cov tshuaj tiv thaiv hluav taws xob rau thaum kawg ua cov khoom silica. Cov txheej txheem ntawm electrolytic electrodialyly suav nrog cov kauj ruam ntawm kev txhim kho cov ntaub ntawv electrolystis, ntxiv cov txheej txheem electrolytec formodialysis cov txheej txheem.
Lwm txoj hauv kev: Ntxiv rau cov txheej txheem saum toj no, muaj lwm txoj hauv kev los npaj silica sol, xws li txoj kev peptization, fumed silica txoj kev thiab dispersion qauv. Cov hau kev no txhua tus muaj lawv tus kheej cov txheej txheem tshwj xeeb thiab kev thov.
