Silicon Hmoov Sib Piv

Rau kev sib xyaw tsim ntawm cov pob zeb ua kua silica fume, nws yog qhov txiav txim siab raws li cov qauv tsim, cov txheej txheem ntawm kev sib xyaw ntawm cov tshuaj silicon hmoov, kev siv tshuaj zoo ntawm silicon hmoov, kev noj tshuaj zoo tshaj plaws ntawm cov dej txo tus neeg sawv cev thiab kev hloov cov xuab zeb thiab gravel, thaum lwm tus yog ua los ntawm cov pob zeb ua ke. Tus qauv tsim yog nqa tawm.

a) Silicon hmoov sib xyaw txoj kev: Feem ntau muaj ob txoj hauv kev rau silicon hmoov hauv pob zeb ua: ib qho yog sab hauv, thiab lwm qhov yog doping sab nraud, uas yuav tsum tau siv ua ke nrog tus neeg sawv cev txo dej. Kev sib xyaw ua ke sab hauv feem ntau hloov cov cement nrog silicon hmoov, thiab hloov ob qho nrog tib tus nqi thiab sib npaug sib npaug rau tus nqi qub. Tus nqi sib npaug hloov cov tshuaj silicon hmoov los hloov cov khoom sib npaug, thiab kev hloov pauv ib nrab yog 1 kg silicon hmoov hloov 1 ~ 3 kg hmoov av. Raws li kev tshawb fawb dav dav, qhov sib xyaw ua ke yog 5% ~ 30%, thiab cov dej-cement piv feem ntau tsis hloov: thaum lub txheej txheem sab nraud yog hais txog silicon hmoov sib xyaw nrog pob zeb zoo ib yam li admixture, thiab tus nqi ntawm cov cement tsis txo , muab ntau npaum li 5%. ~ 10%, cov cuab yeej lub zog ntawm cov pob zeb ua tau los ntawm txoj kev sib xyaw ua ke sab nraud muaj ntau dua, tab sis cov nqi ntawm cov khoom siv hauv kev ua vaj tse yog nce ntxiv.

b) Tus nqi zoo tshaj plaws ntawm cov tshuaj silicon hmoov: tus nqi ntawm silicon hmoov hauv pob zeb yog tsawg heev, thiab qhov ua tau zoo ntawm cov pob zeb ua kom zoo tsis ntau. Txawm li cas los xij, yog tias qhov nyiaj tau ntau dhau lawm, cov pob zeb ua ke yog lo av dhau, tsis yooj yim rau kev tsim, thiab lub shrinkage deformation yog qhov loj, thiab cov huab cua tsis haum yog qhov tsis zoo. Yog li no, thaum muab cov hmoov silicon sib xyaw, qhov zoo tshaj plaws yuav tsum pom kom pom cov txiaj ntsig zoo tshaj plaws. Raws li ib txwm muaj tshwm sim, kev muab tshuaj yog tsawg dua 10%. Cov koob tshuaj tsim nyog ntawm silicon hmoov feem ntau yog xaiv raws li cov tshuaj silicon hmoov siv, hom ntawm cov cement thiab cov xwm txheej ntawm cov thooj txhij, xws li 3, 5, 7, 10%, thiab lwm yam, tsim cov qauv ntoo, kos duab R-SF ( lub zog - Lub silicon hmoov cov ntsiab lus nkhaus yog txiav txim siab. Nws tsim nyog sau tias tus nqi ntawm silicon hmoov yog qhov siab heev.Thaum txiav txim siab qhov zoo tshaj plaws ntawm silicon hmoov, kev ntsuas kev ntsuas thiab kev lag luam yuav tsum tau txiav txim siab.

c) Qhov zoo tshaj plaws ntawm cov dej txo tus neeg sawv cev: kev siv cov tshuaj silicon hmoov rau hauv cov pob zeb ua ke, yog tias tsis muaj cov dej ua kom tsis muaj tus neeg sawv cev, yog tias koj xav tswj cov dej kom zoo ib yam, koj yuav tsum nce cov dej noj, cov dej-cement piv, thiab pob zeb ua kom muaj zog ntawm cov tshuaj silicon-doped hmoov. Nws kuj tseem tsis nce ntxiv, uas yog vim li cas cov tshuaj silicon tsis siv rau hauv cov pob zeb ua yav dhau los. Silicon hmoov thiab cov dej ua kom txo qis yog siv ua ke nrog cov dej-hmoov piv ntawm silicon hmoov, uas yog, kev noj haus dej tsis nce, thiab tib yam kev nplij siab ib yam li cov pob zeb ua tsis muaj silicon hmoov tuaj yeem ua tiav, thiab lub zog ntawm silicon hmoov pob zeb ua kom zoo dua. Feem ntau, ntau dua naphthalene-ua hauj lwm zoo txo cov dej siv tau siv hauv Suav teb, xws li kev tsim kho 1, H, DH3, FDN, NF, N2B, thiab lwm yam, ntau npaum li cas tsawg dua 1% ntawm cov roj hmab, qee zaum txhawm rau txo cov dej-xis piv, sib tov Ultra-siab lub zog ua vaj tse, tus nqi ntawm cov dej ua kom qis yog 2% ~ 3%.

d) Kev hloov kho ntawm cov xuab zeb thiab pob zeb noj: cov roj silicon doping hmoov feem ntau tsis tas yuav ua kev hloov rau cov xuab zeb thiab pob zeb me. Lub sab nrauv silicon doped hmoov yuav tsum tau txiav tawm los ntawm cov ntim ntawm cov xuab zeb thiab xuab zeb sib npaug rau cov ntim ntawm cov kua nplaum silicon.