Ntawm qhov cuam tshuam ib puag ncig ntawm fluoropgypsum:
Cov haujlwm tshwj xeeb ntawm cov khoom siv hluav taws xob ntawm fluoropgypsum tau txiav txim siab los ntawm Tuam Tshoj General Institute of Building Materials Research. Cov txiaj ntsig tau pom tias cov hluav taws xob hluav taws xob ntawm fluoropgypsum qis dua li lub teb chaws tus qauv.
Raws li rau cov ntsiab lus HF, cov khoom siv ruaj khov ntawm 180 ~ 230 degree thaum fluoropgypsum tsim, thaum lub hydrogen fluoride tsis tshua muaj kev kub ntxhov ntawm qhov kub thiab txias thiab rov qab los ntawm cov khoom siv roj pov tseg hauv kev tsim khoom, yog li yuav luag hydrogen fluoride yuav tsis nyob twj ywm hauv slag ntawm qhov kub no. Lub caij fluorine nyob rau hauv fluoropgypsum muaj nyob rau hauv daim ntawv ntawm CaF2, uas yog insoluble nyob rau hauv dej, thiab nws cov ntsiab lus yog feem ntau tsawg tshaj li 2 feem pua, uas yuav tsis ua phem rau ib puag ncig thiab tib neeg lub cev.
Fluoropgypsum yog hom II anhydrous gypsum xeev, hydration thiab hardening tus nqi yog qeeb heev, tus nqi dissolution nyob rau hauv dej yog qeeb dua li dihydrous gypsum, thiab lub zog yog tsawg, tsis tuaj yeem siv ncaj qha raws li cov khoom siv cementing siv hauv cov khoom siv hauv tsev, yuav tsum. yuav tsum tov nrog activator kom ceev lub hydration ntawm fluoropgypsum. Cov hydrated fluoropgypsum tau yaj thiab crystallized los ntawm hom Ⅱ anhydrous gypsum rau hauv dihydrous gypsum.
3. Hydration mechanism ntawm fluoride gypsum
Fresh fluoride gypsum belongs rau hom Ⅱ anhydrous gypsum, thiab nws cov hydration mechanism thiab hydration dej zoo ib yam. Nws yog insoluble los yog insoluble anhydrous gypsum thiab muaj peev xwm hydration kev ua si, tab sis nws hydration tus nqi qeeb, uas yog "lub caj dab" ntawm txoj kev loj hlob thiab kev siv.
4. Fluoride gypsum tom qab hydration yog cov khoom siv hluav taws kub zoo:
Fluoropypsum dihydrate muaj 20.9 feem pua cov dej crystalline, ntxiv rau 8 feem pua ntawm cov dej dawb hauv cov qauv, thiab nws cov ntsiab lus dej tag nrho yog li 30 feem pua. Nws yog A zoo qib A inorganic waterproof khoom.
5. Hydrated fluoropgypsum yog cov khoom siv thermal rwb thaiv tsev zoo
Lub thermal conductivity ntawm dihydrous fluoropgypsum yog tsawg, feem ntau ntawm 1.5 ~ 1.9w / (m•k), yog ib qho zoo thermal rwb thaiv tsev khoom.
6, fluorine gypsum hardening lub cev ntom feem ntau yog 10 feem pua -15 feem pua ntawm lwm cov gypsum hardening lub cev hnyav, txo qhov ceev xav tau kev kho mob.
7. Cov khoom siv kho tshuab thiab cov tshuaj mos muag ntawm fluoropgypsum hardening lub cev zoo dua li lwm cov gypsum hardening lub cev.
