Desulfurized gypsum yog cov khoom lag luam los ntawm cov txheej txheem ntawm cov pa roj desulfurization ntawm cov chaw tsim hluav taws xob hluav taws xob lossis lwm cov nroj tsuag uas siv cov roj sulfur.Vim nws qhov hluav taws kub tsis kam, kub tsis kam thiab ya raws, nws tau siv dav hauv kev tsim kho kev lag luam raws li cov khoom siv hauv tsev.Txawm li cas los xij, ib qho ntawm cov teeb meem loj hauv kev siv desulfurized gypsum yog nws cov cua kub ntawm cov dej, uas tuaj yeem ua rau muaj teeb meem xws li tawg thiab deformation thaum lub sij hawm teeb tsa thiab hardening txheej txheem.Yog li ntawd, yuav tsum tau nrhiav txoj hauv kev kom txo tau cov cua sov ntawm hydration ntawm desulfurized gypsum thaum tuav nws cov khoom thiab cov khoom.
Cellulose ethers feem ntau yog siv cov additives hauv kev tsim kho kev lag luam los txhim kho kev ua haujlwm, lub zog thiab ua haujlwm ntev ntawm cov khoom siv cement.Nws yog non-toxic, biodegradable, tauj dua tshiab polymer muab tau los ntawm cellulose, cov organic ntau tshaj plaws nyob rau hauv lub ntiaj teb no.Cellulose ether tuaj yeem tsim cov gel zoo li cov qauv hauv dej, uas tuaj yeem txhim kho cov dej tuav, sag tsis kam thiab sib xws ntawm cov khoom siv cement.Tsis tas li ntawd, cellulose ethers kuj tuaj yeem cuam tshuam rau hydration thiab teeb tsa cov txheej txheem ntawm gypsum-raws li cov ntaub ntawv, ntxiv cuam tshuam rau lawv cov khoom thiab cov khoom.
Cov nyhuv ntawm cellulose ether ntawm gypsum hydration thiab solidification txheej txheem
Gypsum yog ib qho calcium sulfate dihydrate compound uas reacts nrog dej los tsim cov calcium sulfate hemihydrate tuab thiab nyuaj.Lub hydration thiab solidification txheej txheem ntawm gypsum yog complex thiab muaj ob peb theem, xws li nucleation, kev loj hlob, crystallization, thiab solidification.Thawj cov tshuaj tiv thaiv ntawm gypsum thiab dej ua kom muaj cua sov ntau, hu ua cua sov ntawm hydration.Qhov cua sov no tuaj yeem ua rau thermal stresses thiab shrinkage nyob rau hauv cov khoom siv gypsum, uas tuaj yeem ua rau tawg thiab lwm yam tsis xws luag.
Cellulose ethers tuaj yeem cuam tshuam rau hydration thiab teeb tsa cov txheej txheem ntawm gypsum los ntawm ntau lub tshuab.Ua ntej, cellulose ethers tuaj yeem txhim kho kev ua haujlwm thiab sib xws ntawm gypsum-raws li cov ntaub ntawv los ntawm kev ua kom ruaj khov thiab tsis sib xws hauv dej.Qhov no txo cov kev xav tau ntawm cov dej thiab ua kom cov dej ntws ntawm cov khoom, yog li ua kom yooj yim rau cov dej thiab kev teeb tsa.Qhov thib ob, cellulose ethers tuaj yeem ntes thiab khaws cov dej noo hauv cov khoom los ntawm kev tsim cov gel zoo li lub network, yog li txhim kho cov khoom siv dej tuav.Qhov no prolongs lub sij hawm hydration thiab txo lub peev xwm rau thermal stress thiab shrinkage.Thib peb, cellulose ethers tuaj yeem ncua cov theem pib ntawm cov txheej txheem hydration los ntawm adsorbing ntawm cov pob zeb gypsum thiab inhibiting lawv txoj kev loj hlob thiab crystallization.Qhov no txo qis tus nqi pib ntawm tshav kub ntawm hydration thiab ncua sij hawm teem sijhawm.Plaub, cellulose ethers tuaj yeem txhim kho cov khoom siv kho tshuab thiab kev ua haujlwm ntawm gypsum-raws li cov ntaub ntawv los ntawm kev ua kom lawv lub zog, durability thiab tsis kam rau deformation.
Cov yam ntxwv cuam tshuam rau lub tshav kub ntawm hydration ntawm desulfurized gypsum
Lub tshav kub ntawm hydration ntawm desulfurized gypsum yog cuam tshuam los ntawm ntau yam, nrog rau cov tshuaj muaj pes tsawg leeg, particle loj, noo noo cov ntsiab lus, kub thiab additives siv nyob rau hauv cov khoom.Cov tshuaj muaj pes tsawg leeg ntawm desulfurized gypsum yuav txawv nyob ntawm seb hom roj thiab cov txheej txheem desulfurization siv.Feem ntau hais lus, piv nrog ntuj gypsum, desulfurized gypsum muaj ntau dua cov ntsiab lus ntawm impurities xws li calcium sulfate hemihydrate, calcium carbonate, thiab silica.Qhov no cuam tshuam qhov degree ntawm hydration thiab tus nqi ntawm tshav kub generated thaum lub sij hawm cov tshuaj tiv thaiv.Qhov loj me me thiab thaj chaw tshwj xeeb ntawm desulfurized gypsum tseem yuav cuam tshuam tus nqi thiab kev siv ntawm cov cua sov ntawm hydration.Cov khoom me me thiab qhov loj dua qhov tshwj xeeb tuaj yeem ua rau thaj chaw sib cuag thiab pab txhawb cov tshuaj tiv thaiv, ua rau muaj cua sov ntau dua.Cov ntsiab lus dej thiab qhov kub ntawm cov khoom kuj tuaj yeem cuam tshuam cov cua sov ntawm hydration los ntawm kev tswj tus nqi thiab qhov twg ntawm cov tshuaj tiv thaiv.Cov ntsiab lus dej siab dua thiab qis dua tuaj yeem txo tus nqi thiab kev siv ntawm cov cua sov ntawm hydration, thaum cov dej qis dua thiab kub dua tuaj yeem ua rau tus nqi thiab kev siv ntawm cov cua sov ntawm hydration.Cov khoom siv ntxiv xws li cellulose ethers tuaj yeem cuam tshuam cov cua sov ntawm hydration los ntawm kev cuam tshuam nrog gypsum crystals thiab hloov lawv cov khoom thiab tus cwj pwm.
Cov txiaj ntsig zoo ntawm kev siv cellulose ethers los txo cov cua sov ntawm hydration ntawm desulfurized gypsum
Peb siv cellulose ethers li additives los txo cov cua sov ntawm hydration ntawm desulfurized gypsum muaj ntau yam kev pab cuam, xws li:
1. Txhim kho qhov ua haujlwm tau zoo thiab sib xws ntawm cov ntaub ntawv, uas muaj txiaj ntsig zoo rau kev sib xyaw, kev tso kawm thiab kev npaj ntawm cov ntaub ntawv.
2. Txo cov dej xav tau thiab ua kom cov ntaub ntawv fluidity, uas tuaj yeem txhim kho cov khoom siv kho tshuab thiab siv tau ntawm cov ntaub ntawv.
3. Txhim kho cov khoom siv dej tuav lub peev xwm thiab txuas ntxiv cov khoom siv lub sij hawm hydration, yog li txo cov thermal stress thiab shrinkage.
4. ncua lub sij hawm pib ntawm hydration, ncua lub sij hawm solidification ntawm cov ntaub ntawv, txo lub ncov tus nqi ntawm hydration thaum tshav kub kub, thiab txhim kho kev ruaj ntseg thiab zoo ntawm cov ntaub ntawv.
5. Txhim kho cov khoom siv kho tshuab thiab kev ua tau zoo ntawm cov ntaub ntawv, uas tuaj yeem txhim kho cov kav ntev, lub zog thiab deformation tsis kam ntawm cov ntaub ntawv.
6. Cellulose ether yog non-toxic, biodegradable thiab rov ua dua tshiab, uas tuaj yeem txo qhov cuam tshuam rau ib puag ncig thiab txhawb kev tsim kho kom ruaj khov ntawm kev tsim kho kev lag luam.
nyob rau hauv xaus
Cellulose ethers tau cog lus tias yuav muaj cov khoom ntxiv uas tuaj yeem cuam tshuam cov dej thiab teeb tsa cov txheej txheem ntawm desiccated gypsum los ntawm kev txhim kho kev ua haujlwm, sib xws, dej tuav thiab cov khoom siv kho tshuab.Kev sib cuam tshuam ntawm cellulose ethers thiab gypsum crystals tuaj yeem txo qhov kub siab ntawm cov dej thiab ncua sij hawm teem sijhawm, uas tuaj yeem txhim kho kev nyab xeeb thiab zoo ntawm cov khoom.Txawm li cas los xij, qhov ua tau zoo ntawm cellulose ethers tuaj yeem nyob ntawm seb muaj pes tsawg leeg xws li tshuaj lom neeg muaj pes tsawg leeg, qhov loj me, cov ntsiab lus noo noo, kub thiab cov khoom siv ntxiv hauv cov khoom siv.Kev tshawb fawb yav tom ntej yuav tsum tsom mus rau kev ua kom zoo dua qhov ntau npaum li cas thiab kev tsim cov cellulose ethers kom ua tiav qhov kev xav tau txo qis hauv cov cua sov ntawm hydration ntawm desulfurized gypsum yam tsis muaj kev cuam tshuam rau nws cov khoom thiab cov khoom.Tsis tas li ntawd, qhov muaj peev xwm ntawm kev lag luam, ib puag ncig, thiab kev sib raug zoo ntawm kev siv cellulose ethers yuav tsum tau tshawb xyuas ntxiv thiab tshuaj xyuas.
Post lub sij hawm: Oct-11-2023