Kev siv silica hauv cov txheej txheej feem ntau yog txhawm rau txhim kho kev nplaum, tiv taus huab cua, tiv thaiv kev sib sau ua ke, thiab txhim kho thixotropy. Nws yog qhov tsim nyog rau cov txheej txheem vaj tse, cov txheej txheem dej, thiab cov xim acrylic resin.
I. Kev Sib Piv ntawm Silica Hom nrog Cov Txheej Txheem Txheej
1. Silica uas muaj pa taws
Cov Cheeb Tsam Siv: Cov tshuaj pleev xim UV-kho tau (piv txwv li, cov tshuaj pleev xim ntoo UV, cov tshuaj pleev xim yas UV), cov tshuaj pleev xim tuab rau kev lag luam, thiab cov tshuaj pleev xim hmoov.
Cov Kev Zoo ntawm Kev Ua Haujlwm: Muaj zog thixotropy, zoo heev tiv thaiv kev sagging thiab tiv thaiv kev teeb tsa.
Kev Cuam Tshuam ntawm Tus Nqi: Txawm hais tias tus nqi ib qho siab, qhov ntau npaum li cas uas xav tau yog qis (0.5%–3%), ua rau tag nrho tus nqi tswj tau.
2. Cov Silica uas tau ua los ntawm cov av nplaum
Cov Cheeb Tsam Siv: Cov txheej txheem architectural, cov txheej txheem kev lag luam nruab nrab mus rau qis.
Cov Kev Zoo ntawm Kev Ua Haujlwm: Tus nqi qis dua, txawm hais tias xav tau ntau dua (3% -10%); zoo dua qhov cuam tshuam piv rau fumed silica.
Cov Kev Txwv: Kev faib tawm ntawm cov khoom me me dav dav, qhov tseeb qis dua hauv kev tswj hwm rheology.
3. Silica Aerogel
Cov Ntawv Thov Tshwj Xeeb: Cov txheej txheem tiv thaiv hluav taws, cov txheej txheem tiv thaiv rau cov khoom siv kub siab.
Qhov Teeb Meem Tus Nqi: Cov txheej txheem npaj nyuaj; tus nqi ncav cuag kaum tawm txhiab RMB / kg, yog li tsuas yog siv rau hauv cov teb muaj nqis ntxiv.
II. Kev Txhim Kho Kev Ua Haujlwm ntawm Cov Txheej Txheem
1. Kev Txhim Kho Kev Ua Haujlwm thiab Kev Siv Daim Ntawv Thov
Cov silica uas muaj fumed tsim ib lub network uas muaj peb sab los ntawm cov hydroxyl pawg ntawm qhov chaw, ua rau muaj thixotropy: nyob rau hauv lub zog shear, viscosity txo qis kom yooj yim rau kev siv; thaum static, viscosity rov qab los tiv thaiv kev sagging thiab ntug buildup. Precipitated silica ua rau lub txheej ruaj khov, tiv thaiv cov xim settling, thiab ntev lub sijhawm khaws cia.
2. Tiv thaiv kev sib xyaw thiab kev txhim kho kev sib kis
Cov silica zoo heev, ua ib yam khoom siv ntxiv rau sab nraud, nqus tau rau ntawm qhov chaw ntawm cov hmoov txheej kom tsim tau "cov nyhuv uas muaj pob," txhim kho kev ntws thiab kev tiv thaiv kev sib sau ua ke. Lub zog siab ntawm fumed silica ua rau lub sijhawm sib kis luv dua thiab txhim kho cov xim sib xws.
3. Kev Txhim Kho Kev Ua Haujlwm
Cov nyhuv matting: Silica microparticles txo qhov ci ntsa iab los ntawm kev cuam tshuam diffuse, ua tiav cov tiav matte rau semi-matte.
Cov Khoom Siv Kho Tshuab: Txhim kho qhov tawv ntawm txheej, tiv taus kev sib txhuam, thiab tiv taus huab cua, ua kom lub neej ua haujlwm ntev dua.
Cov Khoom Siv Kho Qhov Muag: Txhim kho UV tawg rau kev tiv thaiv kev laus thaum tswj kev pom tseeb.
4. Cov Xwm Txheej Tshwj Xeeb rau Daim Ntawv Thov
Cov txheej txheej tuab (piv txwv li, cov xim pleev xim rau dej hiav txwv): Nyob ntawm fumed silica thixotropy kom ntseeg tau tias cov zaj duab xis tuab.
Cov txheej hauv pem teb: Txhim kho kev sib npaug thiab kev tiv thaiv khawb.
Kev Xaiv Hom: Yuav tsum xaiv cov hom silica sib txawv (fumed/precipitated) raws li qhov yuav tsum tau ua ntawm txheej - piv txwv li, fumed silica rau kev tswj hwm rheology kom meej, thaum precipitated silica muab kev sib npaug zoo dua ntawm tus nqi thiab kev ua tau zoo hauv matting.
III. Cov Lus Qhia rau Kev Sib Npaug Tus Nqi thiab Kev Ua Tau Zoo
Cov txheej txheem siab heev (piv txwv li, cov txheej txheem tsheb, cov txheej txheem UV): Fumed silica yog qhov nyiam dua, txawm tias nws tus nqi siab rau ib chav, vim nws ua rau muaj kev ua tau zoo dua (piv txwv li, ua rau muaj kev tiv thaiv kev sib txhuam ob npaug).
Cov txheej txheej nruab nrab mus rau qis kawg (piv txwv li, cov txheej txheem architectural): Precipitated silica muaj qhov sib piv zoo dua ntawm kev siv nyiaj thiab kev ua tau zoo, thiab kev sib raug zoo tuaj yeem txhim kho los ntawm kev hloov kho qhov chaw.
Cov kev cai tshwj xeeb rau kev ua haujlwm (tiv taus hluav taws/kev rwb thaiv cua sov): Silica aerogel tsis tuaj yeem hloov pauv tau tab sis yuav tsum tau muaj kev ntsuam xyuas tag nrho ntawm kev siv nyiaj tsim nyog.
Xaus Lus: Hauv kev lag luam txheej, silica txo cov nqi tag nrho los ntawm kev txhim kho kev ua tau zoo. Txawm li cas los xij, tus nqi khoom siv raw thiab kev nqis peev hauv cov txheej txheem yuav tsum sib npaug. Cov ntawv thov siab tshaj plaws feem ntau siv fumed silica, thaum cov lag luam nruab nrab mus rau qis dua nyiam precipitated silica rau kev siv nyiaj zoo dua.
Lub sijhawm tshaj tawm: Cuaj hlis-24-2025