Cellulose ether feem ntau muaj peb lub luag haujlwm hauv qab no:
1) Nws tuaj yeem ua kom cov mortar tshiab los tiv thaiv kev sib cais thiab tau txais lub cev zoo li qub;
2) Nws muaj kev ua haujlwm ntawm huab cua nkag thiab tuaj yeem ua kom ruaj khov ntawm cov npuas me me nkag mus rau hauv lub mortar;
3) Raws li tus neeg saib xyuas dej, nws yuav pab kom cov dej tsis muaj dej (dej dawb) nyob rau hauv cov txheej nyias nyias ntawm mortar, kom cov cement tuaj yeem muaj sij hawm ntau rau dej tom qab siv tshuaj khib nyiab.
Nyob rau hauv qhuav sib tov mortar, methyl cellulose ether plays lub luag hauj lwm nyob rau hauv dej tuav, thickening thiab txhim kho kev tsim kho kev ua tau zoo. Kev tuav dej zoo ua kom ntseeg tau tias cov mortar yuav tsis ua rau cov xuab zeb, hmoov thiab lub zog txo vim dej tsis txaus thiab tsis tiav cov cement hydration; Cov nyhuv thickening zoo heev txhim kho lub zog ntawm cov mortar ntub dej, xws li kev tiv thaiv sagging muaj peev xwm ntawm cov nplais nplaum; Qhov sib ntxiv ntawm methyl cellulose ether tuaj yeem txhim kho cov viscosity ntub dej ntawm cov khib nyiab ntub dej, uas muaj cov viscosity zoo rau ntau lub substrates, yog li txhim kho phab ntsa kev ua haujlwm ntawm cov khib nyiab ntub dej thiab txo cov khib nyiab.
Thaum siv cellulose ether, nws yuav tsum tau muab sau tseg tias yog hais tias tus nqi ntawm cellulose ether yog siab dhau los yog viscosity siab dhau lawm, qhov kev thov dej yuav nce, thiab kev tsim kho yuav nyuaj (plastering) thiab kev ua haujlwm yuav raug txo. Cellulose ether tuaj yeem ncua sijhawm teem sijhawm ntawm cov cement, tshwj xeeb tshaj yog thaum noj ntau npaum. Tsis tas li ntawd, cellulose ether tseem yuav cuam tshuam rau lub sijhawm qhib, ntsug ntws tsis kam thiab daim ntawv cog lus lub zog ntawm mortar.
Qhov tsim nyog cellulose ether yuav tsum tau xaiv nyob rau hauv cov khoom sib txawv, thiab nws cov dej num kuj txawv. Piv txwv li, MC nrog viscosity siab dua yuav tsum tau xaiv hauv cov nplais pobzeb nplaum, uas tuaj yeem txuas ntxiv lub sijhawm qhib thiab kho lub sijhawm, thiab txhim kho cov kev ua haujlwm tiv thaiv plam; MC nrog qis viscosity yuav tsum tau xaiv nyob rau hauv tus kheej leveling mortar kom tswj lub fluidity ntawm mortar, thiab nws kuj plays lub luag hauj lwm nyob rau hauv kev tiv thaiv delamination thiab segregation thiab dej tuav. Qhov tsim nyog cellulose ether yuav tsum raug txiav txim raws li cov chaw tsim khoom cov lus pom zoo thiab cov txiaj ntsig kev xeem sib xws.
Tsis tas li ntawd, cellulose ether muaj cov nyhuv stabilizing, thiab cov yeeb yaj kiab thaum ntxov yuav ua rau mortar scaling. Lub microstructure ntawm cellulose ether nyob rau hauv tshiab sib xyaw thiab hardened ceramic pobzeb nplaum tau kawm los ntawm University of Bern thiab National Starch Chemical Company hauv Switzerland. Kev sim teb tau pom hauv daim duab pom tias cellulose ether stabilized npuas nyob rau hauv mortar tshiab los ntawm kev tsim zaj duab xis. Cov cellulose ether films tej zaum yuav tau tsim thaum lub sij hawm los yog tsuas yog tom qab nplawm, thiab cov re dispersible roj hmab hmoov tseem tsis tau pib tsim films. Lub ntsiab lus tom qab qhov tshwm sim no yog qhov ua haujlwm ntawm cellulose ether. Raws li npuas tau coj los ntawm tus agitator nyob rau hauv lub cev txoj kev, cellulose ether sai sai occupies lub interface ntawm npuas thiab cement slurry los ua ib zaj duab xis. Cov yeeb yaj kiab no tseem ntub dej, yog li lawv hloov tau yooj yim thiab compressible, tab sis cov nyhuv polarization qhia meej meej tias lawv cov molecules zoo. Tom qab ntawd, cov yeeb yaj kiab cellulose ether tuaj yeem pom ntawm ntug ntawm lub qhov hws hauv qab lub tshuab ntsuas hluav taws xob, raws li pom hauv daim duab.
Raws li cellulose ether yog cov dej-soluble polymer, nws yuav tsiv mus nyob rau qhov chaw uas cov mortar hu rau huab cua nrog cov evaporation ntawm cov dej nyob rau hauv lub mortar tshiab los tsim enrichment, ua rau cov tawv nqaij ntawm cellulose ether nyob rau saum npoo ntawm lub mortar tshiab. Raws li qhov tshwm sim ntawm cov tawv nqaij, ib zaj duab xis ntom ntom yog tsim rau ntawm qhov chaw mortar, uas yuav ua rau lub sijhawm qhib ntawm lub mortar. Yog hais tias cov pobzeb ceramic tau muab tso rau ntawm qhov chaw ntawm lub mortar nyob rau lub sijhawm no, cov yeeb yaj kiab kuj tseem yuav muab faib rau sab hauv ntawm lub mortar thiab qhov sib cuam tshuam ntawm cov pobzeb ceramic thiab mortar, yog li txo qhov kev sib raug zoo ntawm lub sijhawm tom qab. Cov tawv nqaij ntawm cellulose ether tuaj yeem raug txo los ntawm kev kho cov mis, xaiv cov cellulose ether uas tsim nyog thiab ntxiv lwm cov tshuaj ntxiv.
Youngcel HPMC / MHEC yog dav siv los ua Tshuaj Pab Pawg rau Pobzeb Adhesive, Cement Plaster, Qhuav mix mortar, Phab ntsa putty, Txheej, Detergent thiab lwm yam.Thiab peb tuaj yeem muab koj tus nqi qis tshaj thiab zoo tshaj plaws.
Peb cov khoom yog nrov nyob rau hauv Egypt, Russia, South Africa, Middle East, qaib ntxhw, Nyab Laj, Fabkis, Ltalis, Singapore, Bangladesh, Indonesia, South America thiab hais txog. Ua tsaug ua ntej thiab txais tos hu rau.
Lub sij hawm xa tuaj: Nov-17-2022