Methyl Hydroxyethyl Cellulose (MHEC)yog ib qho cellulose ether uas tsis yog ionic, yaj tau hauv dej uas siv dav hauv kev lag luam khoom siv hauv tsev, tshwj xeeb tshaj yog hauv cov nplaum pobzeb. Kev ntxiv MHEC rau cov nplaum pobzeb tsis yog tsuas yog ua kom zoo dua qub xwb tab sis kuj ua rau kev sib txuas thiab kev ruaj khov, ua rau nws yog ib qho khoom siv tseem ceeb hauv cov khoom siv niaj hnub thiab kho kom zoo nkauj.
1. Cov nyhuv ua kom tuab, txhim kho kev ua haujlwm tau zoo
Cov nplaum rau pobzeb xav tau kev ua haujlwm zoo heev, thiab qhov ua kom tuab ntawm MHEC yog qhov tseem ceeb hauv kev ua tiav qhov no. MHEC yaj hauv dej los ua cov nplaum nplaum nplaum nplaum heev, ua rau cov nplaum muaj zog sib koom ua ke, tiv thaiv nws kom tsis txhob khiav thaum siv thiab txhim kho kev tiv thaiv kev plam ntsug thaum teeb tsa. Qhov no tseem ceeb heev rau kev teeb tsa phab ntsa, tiv thaiv cov pobzeb kom tsis txhob swb ua ntej lawv raug khi.
Muaj zog thixotropic zoo heev ua rau cov nplaum pobzeb ntws tau yooj yim thaum do lossis siv, ua kom du. Tom qab siv, nws rov qab tau nws cov viscosity siab thiab khaws nws cov duab, ua kom ua haujlwm tau zoo dua thiab raug dua.
2. Txhim Kho Kev Khaws Dej Thiab Txhawb Kev Ua Kom Cement Hydration
Qhov MHEC khaws dej tau zoo heev yog lwm yam tseem ceeb hauv cov nplaum rau pobzeb. Qhov khaws dej tau zoo no tiv thaiv kev poob dej sai sai los ntawm cov slurry, txo qhov tawg thaum siv rau cov khoom kub lossis cov khoom nqus dej tau zoo (xws li cov pob zeb thiab cib).
Qhov uas khaws dej tau zoo kuj ua rau cov cement noo tag nrho, yog li ua rau cov nplaum pobzeb muaj zog thiab ruaj khov mus ntev. Qhov "kev khaws dej sab hauv" ntawm MHEC no ua rau cov nplaum pobzeb ua haujlwm tau ruaj khov hauv ntau qhov chaw nyuaj, ua rau nws tsim nyog rau kev siv cov vuas nyias nyias thiab kev teeb tsa cov vuas loj.
3. Kev nplaum thiab kev ywj pheej zoo dua
Txawm hais tias MHEC nws tus kheej tsis yog cov nplaum, cov qauv sib txuas ua ke uas nws tsim pab ua kom thaj chaw sib cuag thiab sib txuas sib npaug ntawm cov nplaum pobzeb thiab cov khoom siv hauv pem teb, ua rau kev sib txuas zoo dua. MHEC kuj tseem ua rau cov nplaum pobzeb yooj ywm dua, ua rau nws hloov kho tau raws li qhov kub thiab txias, lossis kev txav me ntsis, yam tsis tawg, yog li ua rau nws lub neej ua haujlwm ntev dua.
4. Lub Sijhawm Qhib thiab Lub Neej Siv Tau Zoo Dua
Ntxiv MHEC ua rau lub sijhawm qhib ntawm cov nplaum pobzeb ntev dua. Qhov no txhais tau tias tom qab siv cov nplaum rau ntawm cov khoom siv, cov neeg ua haujlwm muaj sijhawm ntau dua los tso cov pobzeb. Qhov no tseem ceeb heev rau kev tsim kho loj, pab txhim kho kev ua haujlwm zoo thiab txo kev ua haujlwm dua.
Tsis tas li ntawd xwb, lub sijhawm siv ntawm cov nplaum rau pobzeb kuj ntev dua, uas txhais tau tias cov nplaum sib xyaw ua ke yuav ua haujlwm tau ib ntus, tiv thaiv kom tsis txhob tawv thiab ua tsis tiav sai, ua rau kev tswj hwm kev tsim kho yooj yim dua.
5. Ib puag ncig zoo thiab muaj kev nyab xeeb, hloov tau rau ntau yam qauv
MHEC yog ib hom cellulose ether uas tsis yog ionic uas tsis koom nrog cov tshuaj cement gelling thiab tsis tso cov pa phem, ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv hauv tsev ntsuab thiab zoo rau ib puag ncig. Nws muaj kev sib raug zoo nrog lwm cov khoom ntxiv (xws li cov hmoov latex uas yaj tau dua, xuab zeb quartz, thiab cement) thiab tuaj yeem siv dav hauv cov nplaum pobzeb ntawm ntau qib, suav nrog C1 thiab C2.
6. Sib xws nrog ntau yam vuas thiab cov khoom siv sib xyaw
MHEC muab kev ua tau zoo heev rau kev siv cov nplaum rau pobzeb, txawm tias siv rau cov pobzeb me me ib txwm muaj lossis cov khoom siv niaj hnub uas nqus dej ntau lossis tsawg xws li cov pobzeb loj, cov pobzeb vitrified, thiab cov pobzeb hauv pem teb. Nws qhov kev ua tau zoo heev kuj tso cai rau kev hloov pauv dav thiab kev ruaj khov siab rau ntau yam khoom siv, suav nrog cov pob zeb ua vaj tse, phab ntsa cib, thiab cov cement mortar screed.
Cov ntawv thov tseem ceeb ntawm MHEC hauv cov nplaum pobzebsuav nrog kev txhim kho cov khoom ua kom tuab, khaws dej, thiab txhim kho kev ua haujlwm thiab kev sib txuas. Nws yog ib qho tseem ceeb rau kev ua kom cov nplaum pobzeb ua haujlwm tau zoo, ruaj khov, thiab yooj yim siv. Nrog rau kev nce qib hauv kev siv tshuab kev tsim kho thiab kev txhim kho cov ntaub ntawv tsim kho ntsuab, kev siv MHEC hauv cov nplaum pobzeb yuav nthuav dav thiab nws tus nqi yuav loj hlob.
Lub sijhawm tshaj tawm: Lub Yim Hli-01-2025