Cellulose ether yog ib hom khoom siv polymer uas tsim los ntawm kev hloov kho cov cellulose ntuj. Nws yog dav siv hauv kev tsim kho, tshuaj, khoom noj, txheej, kev saib xyuas tus kheej thiab lwm yam. Cov qauv tshwj xeeb molecular ntawm cellulose ether muab nws ntau yam khoom tshwj xeeb thiab yog li muaj qhov zoo thiab cov txiaj ntsig hauv ntau qhov kev lag luam.
1. Thickening thiab rheology tswj
Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm cellulose ethers yog lawv lub peev xwm thickening zoo heev. Tom qab tau yaj hauv dej, cellulose ether tuaj yeem tsim ib qho kev daws teeb meem colloidal thiab ua kom cov viscosity ntawm lub kaw lus zoo. Qhov no tso cai rau nws los ua lub luag haujlwm hauv kev tswj cov dej ntws thiab txhim kho kev ua haujlwm hauv cov khoom siv (xws li mortar, mortar) thiab coatings. Los ntawm kev kho qhov ntau npaum thiab hom cellulose ether, sib txawv rheological zog tuaj yeem ua tau raws li qhov xav tau ntawm kev siv sib txawv. Piv txwv li, nyob rau hauv kev tsim mortars, cellulose ethers tuaj yeem tiv thaiv cov ntaub ntawv los ntawm kev sib cais thaum sib tov, ua kom cov khoom sib xws ntawm cov khoom siv thaum siv thiab tsis txhob tawg lossis poob tawm.
2. Kev tuav dej
Lwm qhov txiaj ntsig tseem ceeb ntawm cellulose ethers rau lawv txoj kev siv dav hauv kev tsim kho yog lawv cov dej tuav tau zoo heev. Nws tuaj yeem kaw cov dej noo hauv cov hmoov qhuav qhuav xws li cov cement thiab gypsum, yog li ncua lub evaporation ntawm cov dej hauv cov khoom. Rau cov cement-based mortars thiab gypsum-raws li cov ntaub ntawv, cov dej khaws cia ntawm cellulose ethers pab txhim kho kev ua haujlwm ntawm cov tshuaj tiv thaiv dej, kom ntseeg tau tias cov ntaub ntawv tau kho tau zoo thiab tawv, yog li txhim kho lub zog thiab kav ntev ntawm lub tsev. Nyob rau tib lub sijhawm, nyob rau hauv qhov kub thiab txias los yog qhov chaw qhuav, cov dej khaws cia ntawm cellulose ether yog qhov tseem ceeb tshwj xeeb kom tsis txhob muaj kev puas tsuaj ntawm kev tsim kho vim dej tsis zoo.
3. Zoo zaj duab xis tsim cov khoom
Cellulose ethers muaj cov yeeb yaj kiab zoo heev thiab tau siv dav hauv cov txheej txheem thiab cov nplaum. Nws tuaj yeem tsim cov khaub ncaws hnav thiab ntom ntom nti ntawm txheej txheej waterproof, uas yog dej tsis txaus, thaum txhim kho txoj kev ua kom zoo nkauj thiab tawv ntawm txheej. Hauv architectural coatings, cellulose ethers tuaj yeem txhim kho qhov adhesion thiab hnav tsis kam ntawm txheej thiab txuas nws lub neej kev pab cuam. Tsis tas li ntawd, cov yeeb yaj kiab tsim cov khoom ntawm cellulose ethers kuj tseem ceeb heev hauv kev npaj tshuaj, uas tuaj yeem pab cov tshuaj tsim cov txheej txheem los tswj cov tshuaj tso tawm thiab txhim kho tshuaj stability.
4. Resistance rau kev daws teeb meem thiab kev ncua
Hauv cov tshuab ua kua xws li txheej txheej thiab emulsions, cellulose ether tuaj yeem siv los ua tus stabilizer zoo los tiv thaiv qhov teeb meem ntawm cov khoom. Nws txhim kho cov khoom ruaj khov thiab kev siv los ntawm kev ua kom cov viscosity ntawm cov kua thiab tswj cov khoom sib faib ntawm cov khoom sib txawv. Piv txwv li, nyob rau hauv cov xim pleev xim rau hauv dej, cellulose ethers tuaj yeem tiv thaiv cov nag lossis daus ntawm cov xim los yog muab tso rau, ua kom cov xim tsis sib xws thiab txhim kho smoothness ntawm kev tsim kho.
5. Txhim kho kev sib raug zoo
Hauv kev tsim kho thiab cov nplaum nplaum, kev siv cov cellulose ethers tuaj yeem txhim kho kev sib raug zoo ntawm cov ntaub ntawv, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj polymer-hloov mortars. Nws lub luag hauj lwm ua cov thickener thiab dej-retaining tus neeg sawv cev tuaj yeem ntxiv dag zog rau kev sib raug zoo ntawm mortar thiab cov khoom siv hauv paus. Lub adhesion ntawm lub mortar txo qhov tawg thiab shrinkage teeb meem ntawm lub mortar. Cellulose ethers kuj tuaj yeem kho lub sijhawm qhib ntawm cov nplaum, ua kom lub sijhawm txaus rau kev hloov kho thiab txiav thaum lub sijhawm tsim kho.
6. Txhim kho kev tsim kho kev ua haujlwm
Cellulose ethers kuj tseem txhim kho kev tsim kho ntawm ntau yam khoom siv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv cov cement mortars thiab gypsum-based cov ntaub ntawv. Nws rheology zoo heev txhim kho lub pushability, smoothness thiab yooj yim ntawm kev khiav hauj lwm thaum lub sij hawm tsim kho. Cov neeg ua haujlwm tsim kho tuaj yeem siv cov ntaub ntawv yooj yim dua thiab txo cov cuab yeej adhesion thiab cov khoom pov tseg. Kev siv cov cellulose ether kuj txhim kho cov kev ua haujlwm ntawm cov khoom siv los tiv thaiv, kom ntseeg tau tias qhov chaw tom qab kev tsim kho yog du thiab zoo nkauj.
7. Kub kub tsis kam thiab tshuaj lom neeg ruaj khov
Cellulose ether muaj qhov zoo thermal stability thiab tshuaj inertness, uas tso cai rau nws tswj nws lub cev thiab tshuaj lom neeg nyob rau hauv ntau yam huab cua. Cellulose ethers tuaj yeem tiv taus degradation nyob rau hauv qhov kub thiab txias, acid-base los yog oxidizing ib puag ncig, ua kom lawv cov kav ntev thiab kev ntseeg siab hauv kev tsim kho, tshuaj lom neeg kev lag luam, tshuaj thiab lwm yam lag luam. Cov yam ntxwv no tseem ua rau cov cellulose ethers tau siv dav hauv cov ntawv thov uas yuav tsum tau ua kom muaj zog xws li roj mining thiab lub tsev waterproofing.
8. Biocompatible thiab non-toxic
Cellulose ethers yog cov khoom sib txuas tau los ntawm cov cellulose ntuj thiab tau siv dav hauv kev lag luam tshuaj thiab zaub mov vim lawv cov biocompatibility zoo thiab tsis muaj tshuaj lom. Raws li kws tshuaj excipients, cellulose ethers tuaj yeem kho cov tshuaj tso tawm thiab txhim kho tshuaj stability. Lawv kuj tuaj yeem siv los ua cov thickeners, stabilizers, thiab gelling cov neeg ua haujlwm hauv cov khoom noj khoom haus los xyuas kom meej qhov saj thiab ruaj khov ntawm cov khoom.
9. Kev tiv thaiv ib puag ncig thiab rov tsim dua tshiab
Cellulose ethers yog muab los ntawm ntuj cellulose, uas yog ib qho khoom siv txuas ntxiv mus, thiab nws cov txheej txheem tsim khoom thiab kev siv yog ib puag ncig zoo. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws los hloov qee cov tshuaj hluavtaws, tshwj xeeb tshaj yog niaj hnub no nrog kev xav tau ntau ntxiv rau cov khoom siv ruaj khov thiab zoo ib puag ncig. Kev siv cellulose ethers yog nyob rau hauv txoj kab nrog txoj kev loj hlob ntawm kev tiv thaiv ib puag ncig thiab ntsuab chemistry.
10. Kev siv ntau yam
Lub versatility ntawm cellulose ethers tau coj mus rau ntau yam kev siv nyob rau hauv ntau yam lag luam. Piv txwv li, nyob rau hauv kev tsim kho kev lag luam, nws yog siv nyob rau hauv qhuav-mix mortar, ceramic pobzeb adhesives, sab nrauv phab ntsa rwb thaiv tsev, thiab lwm yam .; nyob rau hauv kev lag luam kws tshuaj, cellulose ether yog ib qho kev siv tshuaj tua kab mob thiab cov nplaum nplaum; Hauv kev lag luam khoom noj khoom haus, nws siv los ua thickener, stabilizer thiab gelling tus neeg sawv cev. Tsis tas li ntawd, cellulose ethers kuj ua lub luag haujlwm tseem ceeb hauv cov roj av mining, tshuaj pleev ib ce thiab cov khoom siv tshuaj txhua hnub.
Cellulose ether yog ntau yam khoom siv polymer nrog ntau yam zoo xws li thickening, dej tuav, film-forming, stabilization, thiab txhim kho adhesion. Nws daim ntawv thov hauv kev tsim kho, tshuaj, khoom noj thiab lwm yam kev lag luam tsis tsuas yog txhim kho cov khoom lag luam thiab kev ua tau zoo, tab sis kuj ua tau raws li cov kev xav tau ntawm kev tiv thaiv ib puag ncig thiab kev tsim kho kom ruaj khov. Nrog rau kev nce qib ntawm thev naus laus zis thiab kev nthuav dav ntawm daim ntawv thov teb, cellulose ethers yuav ua lub luag haujlwm tseem ceeb ntxiv rau yav tom ntej.
Post lub sij hawm: Sep-14-2024