Kev sib xyaw tus kheej yuav cia siab rau nws tus kheej qhov hnyav los ua lub tiaj tiaj, du lwm cov ntaub ntawv, thiab tib lub sijhawm nws tuaj yeem nqa tawm cov khoom loj thiab kev tsim kho. Yog li ntawd, siab fluidity yog qhov tseem ceeb heev ntawm kev sib nphu tus kheej. Ib qho ntxiv, nws yuav tsum muaj qee yam dej cia thiab ua tus sib cais, tsis muaj cov kabmob dej tshwm sim, thiab muaj cov yam ntxwv ntawm kev rwb thaiv tsev tshav kub thiab kub nce.
Feem ntau, kev tshuaj twm nws yuav tsum muaj cov tshuaj ntsuab zoo, tab sis cov nqaij fluidity ntawm cov cement cov cement feem ntau tsuas yog 10-12cm; Cellulose ether yog ib qho tseem ceeb ntxiv npaj txhij cov tshuaj sib xyaw, nws tuaj yeem txhim kho kev sib xyaw, nws tuaj yeem ua haujlwm tau zoo, kev ua haujlwm tau zoo, kev ua haujlwm ntawm lub tshuaj khib.
1: fluidity ntawm cug cug
Cellulose ether muaj qhov tseem ceeb uas cuam tshuam rau cov dej khaws cia, xwm yeem thiab kev tsim kho ntawm tus kheej txoj kab sib xyaw. Tshwj xeeb tshaj yog raws li tus kheej txoj kab vwj, fundicity yog ib qho ntawm cov ntsuas tseem ceeb rau kev ntsuas tus kheej kev ua tau zoo. Nyob rau hauv lub premise ntawm ensuring qhov sib xyaw ua ke ntawm cug tshuaj khib, lub fluidity ntawm lub tshuaj khib tau hloov kho los ntawm kev hloov tus nqi ntawm cov cellulose ether. Txawm li cas los xij, yog tias cov tshuaj ntau dhau, lub fluidity ntawm lub cug yuav raug txo kom tsawg, yog li cov tshuaj ntawm cellulose yuav tsum tau tswj nyob rau hauv ib qho kev tsim nyog.
2: Cug Cug Dej Tuav
Dej rov qab los ntawm cug yog ib qho tseem ceeb ntsuas ntsuas qhov ruaj khov ntawm sab hauv ntawm cov tshiab cug cugashly sib xyaw. Txhawm rau kom tau txais cov tshuaj tiv thaiv hydration ntawm cov khoom siv gel, ib qho nyiaj tsim nyog ether tuaj yeem ua kom lub ya raws hauv lub tshuaj khib tau ntev. Feem ntau hais lus, cov dej khaws cov nplais ntawm slurry nce nrog nce cov ntsiab lus ether ether. Cov dej khaws cov nyhuv ethere eter tuaj yeem tiv thaiv lub substrate los ntawm kev nqus tau ntau dhau lawm, yog li ib puag ncig slurry muab cov dej txaus. Ib qho ntxiv, cov viscosity ntawm cellulose ntawm cellulose ntawm cellulose muaj cov cawv muaj txiaj ntsig ntawm cov dej khib nyiab. Qhov siab dua viscosity, qhov zoo dua cov dej khaws cia. Feem ntau, cellulose ether nrog viscosity ntawm 400mpa. Yuav feem ntau siv rau kev tshuaj khib nyiab thiab nce kev sib xyaw ntawm cov tshuaj khib.
3: cug lub sijhawm
Cellulose ether muaj qee yam kev siv hluav taws xob me me. Nrog kev nce ntawm cov ntsiab lus ntawm cellulose ether, lub sij hawm teeb lub sij hawm ntawm cug vepongs. Cov nyhuv retarding ntawm cellulose ether rau cov tshuaj pleev lisente tsuas yog nyob ntawm cov pab pawg alkyl, thiab muaj me ntsis los ua nrog nws cov molecular hnyav. Qhov me me ntawm Alkyl kev hloov pauv, cov ntsiab lus hauv hydroxyl, thiab qhov pom tseeb dua cov nyhuv retarding. Thiab cov ntsiab lus ntawm cellulose ether, ntau pom tseeb qhov kev ncua sij hawm ntawm zaj duab xis txheej ntawm kev ua kom dej xis, yog li cov nyhuv retarding kuj tseem pom tseeb.
4: Collab coltryive lub zog thiab hloov zog
Feem ntau, lub zog yog ib qho ntawm cov kev soj ntsuam tseem ceeb rau kev kho cov txiaj ntsig ntawm cov khoom noj kom zoo nkauj. Thaum cov ntsiab lus ntawm cellulose ethere nce, lub compressive lub zog thiab FLEXURAL lub zog ntawm cug cug yuav tsawg.
5: Tshuaj Khov Zog
Cellulose ether muaj ib qho muaj txiaj ntsig zoo ntawm kev sib sau ntawm cug. Cov lus qhia ntawm cov duab polymer ua yeeb yaj kiab hauv cov khoom noj kom huv si, uas yog qhov ua kom muaj dej xis ntawm cov cement, yog li kev txhim kho cov nyiaj lub zog ntawm cov tshuaj txhuam tom qab ua kom tawv. Nyob rau tib lub sijhawm, tus nqi tsim nyog ether txhim kho cov plug, txo cov tshuab hloov pauv ntawm lub tshuab hloov pauv, thiab txo lub zawv zawg ntawm kev cuam tshuam. Rau ib qho xwm txheej, qhov ua ke cuam tshuam ntawm lub cug cug thiab lub substrate yog txhim kho. Ntxiv rau, vim muaj cov cellulose ether hauv cov cement cheeb tsam, qhov kev hloov pauv kev hloov pauv tshwj xeeb yog tsim nruab nrab ntawm cov tshuaj khib thiab cov khoom lag luam. Qhov interface txheej no ua rau lub interface qhov chaw hloov pauv tau yooj yim dua thiab tsis tshua muaj zog, yog li ntawd, yog li ntawd lub tshuaj khib muaj zog
Lub sijhawm Post: Feb-03-2023