Cellulose ethers yog ib chav kawm ntawm cov organic polymer tebchaw siv dav hauv cov khoom siv hauv tsev, tshwj xeeb tshaj yog hauv pob zeb thiab mortar. Raws li ib qho ntxiv, cellulose ether muaj qhov cuam tshuam loj rau ntau yam khoom ntawm pob zeb, nrog rau kev ua haujlwm, dej tuav, lub zog, kev sib txuas, thiab lwm yam.
1. cuam tshuam rau kev ua haujlwm
Cellulose ethers tuaj yeem txhim kho kev ua haujlwm ntawm pob zeb, tshwj xeeb tshaj yog thaum sib xyaw thiab tsim kho. Cellulose ether muaj cov nyhuv thickening zoo thiab tuaj yeem ua kom cov viscosity thiab rheology ntawm pob zeb, ua kom yooj yim rau kev khiav lag luam thiab cov duab. Qhov kev ua tau zoo no yog qhov tseem ceeb tshwj xeeb hauv kev tsim kho uas yuav tsum tau muaj dej ntau, xws li cov twj tso kua mis thiab cov tshuaj tua hluav taws.
Cellulose ether tuaj yeem txhim kho lubricity ntawm pob zeb thiab txo qhov kev sib txhuam ntawm cov khoom thaum lub sij hawm sib tov, yog li txhim kho qhov sib xws thiab kev ua haujlwm ntawm pob zeb. Qhov no yuav pab cov pob zeb ua kom tiav zoo dua thiab nto tiav thaum tsim kho.
2. cuam tshuam rau kev tuav dej
Cellulose ether muaj cov dej tuav ruaj khov thiab nws cov qauv molecular muaj ntau pawg hydrophilic, uas tuaj yeem nqus tau zoo thiab khaws cov dej noo. Cov yam ntxwv no tso cai rau cov cellulose ethers los txhim kho cov dej tuav hauv pob zeb, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig qhuav los yog nyias txheej. Cellulose ethers tuaj yeem txo cov evaporation sai ntawm cov dej thiab zam cov kab nrib pleb thiab lub zog txo los ntawm kev poob dej thaum ntxov hauv pob zeb. .
Los ntawm kev ua kom cov dej tuav ntawm cov pob zeb, cellulose ether tuaj yeem ncua lub sijhawm cov cement hydration cov tshuaj tiv thaiv, tso cai rau cov cement hais kom tag nrho hydrated, yog li txhim kho lub zog thiab durability ntawm pob zeb. Tshwj xeeb tshaj yog nyob rau hauv kev tsim kho qhuav, xws li kev tsim kho lub caij ntuj sov lossis qhov chaw kub kub, cov dej tuav ntawm cellulose ether plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm kawg ntawm pob zeb.
3. cuam tshuam rau lub zog
Cellulose ether muaj qee yam cuam tshuam rau kev txhim kho lub zog ntawm pob zeb, tshwj xeeb tshaj yog nyob rau lub zog thaum ntxov. Txij li thaum cellulose ether txhim kho cov dej tuav ntawm cov pob zeb, cov tshuaj tiv thaiv hydration ntawm cov cement hais ntau dua, thiab cov khoom siv dej thaum ntxov nce, yog li txhim kho lub zog thaum ntxov ntawm pob zeb. Nyob rau tib lub sijhawm, cellulose ether tuaj yeem txhim kho lub zog tom qab ntawm pob zeb los ntawm kev txhim kho qhov sib xws ntawm nws cov qauv sab hauv.
Nws yuav tsum tau muab sau tseg tias qhov ntau npaum ntawm cellulose ether yuav tsum tau tsim nyog. Yog tias qhov ntau npaum li cas loj heev, txawm hais tias cov dej khaws cia thiab rheology tau txhim kho, nws yuav cuam tshuam rau lub zog kawg ntawm cov pob zeb, tshwj xeeb tshaj yog tom qab lub zog. Qhov no yog vim tias ntau tshaj cellulose ether tuaj yeem cuam tshuam ntxiv hydration ntawm cov cement hais thiab txo lawv cov kev txhim kho tom qab lub zog.
4. cuam tshuam rau shrinkage thiab tawg ntawm pob zeb
Cellulose ether tuaj yeem txo qis qis qis qis deformation thiab shrinkage tawg ntawm pob zeb los ntawm kev txhim kho cov dej tuav ntawm pob zeb. Shrinkage tawg feem ntau yog tshwm sim los ntawm kev ntxhov siab nyob rau hauv cov pob zeb ua los ntawm cov dej evaporation ntau dhau. Cov dej tuav ntawm cellulose ether tuaj yeem ua rau cov txheej txheem no qeeb, tso cai rau cov pob zeb ua kom muaj dej noo nyob rau lub sijhawm ntev hauv qhov chaw qhuav, yog li txo qhov tshwm sim ntawm cov kab nrib pleb.
Cov nyhuv thickening ntawm cellulose ether hauv pob zeb tuaj yeem txhim kho lub zog sib txuas ntawm cov pob zeb, txhim kho cov compactness thiab kev ncaj ncees ntawm nws cov qauv sab hauv, thiab txo qhov kev pheej hmoo ntawm cov kab nrib pleb. Cov cuab yeej no muaj cov ntaub ntawv tseem ceeb hauv cov pob zeb loj, nyias txheej mortar lossis cov khoom siv cement.
5. cuam tshuam rau kev ua vaj tse durability
Cellulose ethers txhawb kev ua haujlwm ntev ntawm pob zeb hauv ntau txoj hauv kev. Ua ntej, cellulose ethers tuaj yeem txhim kho Frost tsis kam thiab ntsev yaig tsis kam ntawm pob zeb. Vim tias cellulose ether tuaj yeem txo cov capillary pores hauv pob zeb thiab txo txoj kev nkag mus ntawm cov dej, cov pob zeb ua kom muaj zog dua rau kev ua phem rau sab nraud hauv qhov chaw txias lossis qhov chaw ntsev-eroded.
Cellulose ethers txhim kho qhov ntom thiab tawg tsis kam ntawm cov pob zeb los ntawm kev txhim kho nws cov dej tuav thiab kev txhim kho lub zog. Cov khoom no muaj txiaj ntsig zoo rau lub neej ua haujlwm ntev ntawm cov pob zeb, tshwj xeeb tshaj yog nyob rau hauv cov txuas hniav, tunnels thiab lwm yam dej num uas cuam tshuam loj heev los ntawm ib puag ncig yaig. Qhov sib ntxiv ntawm cellulose ether tuaj yeem txhim kho qhov ruaj khov ntawm pob zeb.
6. Qhov cuam tshuam rau kev sib txuas ua ke
Cellulose ethers kuj muaj qhov cuam tshuam zoo rau cov khoom sib txuas ntawm cov pob zeb, tshwj xeeb tshaj yog nyob rau hauv lub zog sib txuas ntawm cov tshuaj khib thiab cov txheej txheem. Vim tias cellulose ether tuaj yeem ua kom cov viscosity ntawm cov pob zeb, nws yooj yim dua los rau hauv kev sib raug zoo nrog cov ntaub ntawv hauv paus thaum tsim kho, yog li txhim kho kev sib raug zoo ntawm ob. Qhov no feature yog qhov tseem ceeb hauv daim ntawv thov xws li phab ntsa plastering thiab kho tej yaam num uas yuav tsum tau adhesion siab.
Raws li kev sib xyaw nrog kev ua tau zoo, cellulose ether muaj qhov cuam tshuam zoo rau kev ua haujlwm, dej tuav, lub zog, shrinkage cracking thiab durability ntawm pob zeb. Los ntawm kev ntxiv qhov tsim nyog ntawm cellulose ether, tag nrho cov kev ua tau zoo ntawm pob zeb tuaj yeem txhim kho kom tau raws li qhov xav tau ntawm ntau yam kev tsim kho tshwj xeeb. Txawm li cas los xij, ntau npaum li cas ntawm cellulose ether yuav tsum tau tswj kom muaj nuj nqis raws li qhov tseeb engineering xav tau kom tsis txhob siv ntau dhau uas yuav ua rau txo qis zog lossis lwm yam teebmeem.
Post lub sij hawm: Sep-19-2024