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Tus nqi ntawm HPMC siv rau hauv kev siv ua haujlwm sib txawv nyob ntawm huab cua, kub, zoo ntawm cov hmoov calcium tshauv hauv zos, cov mis ntawm cov hmoov putty thiab "zoo uas cov neeg siv khoom xav tau". Feem ntau hais lus, nws yog ntawm 4 kg thiab 5 kg. Piv txwv li: feem ntau ntawm cov hmoov putty hauv B...Nyeem ntxiv»
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Ib qho ntawm qhov sib txawv loj tshaj plaws ntawm cov tshuaj khib qhuav thiab cov tshuaj khib ib txwm muaj yog tias cov tshuaj khib qhuav raug hloov kho nrog me ntsis cov tshuaj ntxiv. Ntxiv ib qho khoom ntxiv rau cov tshuaj khib hmoov qhuav hu ua kev hloov kho thawj zaug, ntxiv ob lossis ntau cov khoom ntxiv hu ua kev hloov kho thib ob...Nyeem ntxiv»
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Cov roj gypsum desulfurization yog cov roj flue uas tsim los ntawm kev sib xyaw ntawm cov roj sulfur uas muaj cov roj (thee, roj av), cov khib nyiab khov kho uas tsim tawm thaum lub sijhawm desulfurization purification, thiab cov gypsum hemihydrate (tshuaj mis CaSO4 · 0.5H2O), qhov kev ua tau zoo sib xws rau na...Nyeem ntxiv»
- Cov nyhuv ntawm hydroxypropyl methyl cellulose ether (hpmc) ntawm lub peev xwm khaws dej ntawm hmoov
Hydroxypropyl methylcellulose (HPMC) feem ntau ua lub luag haujlwm ntawm kev khaws dej, ua kom tuab thiab txhim kho kev ua haujlwm ntawm kev tsim kho hauv cov cement, gypsum thiab lwm yam khoom siv hmoov. Kev ua tau zoo heev ntawm kev khaws dej tuaj yeem tiv thaiv cov hmoov kom tsis txhob qhuav thiab tawg vim muaj dej ntau dhau.Nyeem ntxiv»
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Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho tas mus li ntawm cov thev naus laus zis rwb thaiv tsev phab ntsa sab nraud, kev nce qib tas mus li ntawm cov thev naus laus zis tsim cellulose, thiab cov yam ntxwv zoo ntawm HPMC nws tus kheej, HPMC tau siv dav hauv kev lag luam kev tsim kho. Txhawm rau tshawb nrhiav ntxiv txog cov txheej txheem ...Nyeem ntxiv»
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Lub npe Suav ntawm HPMC yog hydroxypropyl methylcellulose. Nws yog non-ionic thiab feem ntau siv ua tus neeg sawv cev khaws dej hauv cov mortar qhuav. Nws yog cov khoom siv khaws dej feem ntau siv hauv mortar. Cov txheej txheem ntau lawm ntawm HPMC feem ntau yog cov khoom polysaccharide-based ether tsim los ntawm ib qho ...Nyeem ntxiv»
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1. Cov teeb meem tshwm sim hauv cov hmoov putty Kev ziab sai yog vim muaj ntau npaum li cas ntawm cov hmoov calcium uas tau ntxiv (loj dhau, qhov ntau ntawm cov hmoov calcium uas siv rau hauv cov mis putty tuaj yeem txo qis) yog cuam tshuam nrog tus nqi khaws dej ntawm cov fiber, thiab nws kuj cuam tshuam nrog qhov qhuav ntawm ...Nyeem ntxiv»
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Hauv cov mortar sib xyaw ua ke, tsuav yog me ntsis cellulose ether tuaj yeem txhim kho kev ua tau zoo ntawm cov mortar ntub, nws tuaj yeem pom tias cellulose ether yog cov khoom siv tseem ceeb uas cuam tshuam rau kev ua tau zoo ntawm mortar. Kev xaiv ntawm ntau hom sib txawv, ntau viscosities, ntau pa ...Nyeem ntxiv»
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Qhov tseem ceeb tshaj plaws ntawm cellulose ether yog nws cov dej khaws cia rau hauv cov ntaub ntawv tsim kho. Yog tsis muaj ntxiv cellulose ether, cov txheej nyias nyias ntawm cov mortar tshiab qhuav sai heev uas cov cement tsis tuaj yeem hydrate hauv txoj kev ib txwm thiab cov mortar tsis tuaj yeem tawv thiab ua tiav kev sib koom ua ke zoo. Ntawm...Nyeem ntxiv»
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Cov khoom vitamin yog txhua yam los ntawm paj rwb ntuj lossis ntoo pulp, uas yog tsim los ntawm etherification. Cov khoom cellulose sib txawv siv cov neeg sawv cev etherifying sib txawv. Tus neeg sawv cev etherifying siv hauv hydroxyethyl cellulose (HEC) yog ethylene oxide, thiab tus neeg sawv cev etherifying siv hauv hydroxy...Nyeem ntxiv»
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Daim ntawv thov ntawm hydroxypropyl methylcellulose hauv kev tsim kho mortar plastering mortar Kev khaws cia dej siab tuaj yeem ua rau cov cement puv dej, ua rau lub zog sib txuas ntau ntxiv, thiab tib lub sijhawm, nws tuaj yeem ua rau lub zog tensile thiab shear zog nce ntxiv, zoo heev txhim kho qhov ...Nyeem ntxiv»
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A. Qhov tsim nyog ntawm kev khaws dej Kev khaws dej ntawm cov pob zeb mortar hais txog lub peev xwm ntawm cov pob zeb mortar kom khaws dej. Cov pob zeb mortar uas khaws dej tsis zoo yuav yooj yim los ntshav thiab sib cais thaum thauj mus los thiab khaws cia, uas yog, dej ntab rau saum, thiab xuab zeb thiab cement poob rau hauv qab. Nws yuav tsum yog ...Nyeem ntxiv»