Dab tsi yog cov khoom ntawm methyl cellulose ether?
Teb: Tsuas yog ib qho me me ntawm methyl cellulose ether ntxiv, thiab kev ua haujlwm tshwj xeeb ntawm gypsum mortar yuav zoo dua.
(1) Kho qhov sib xws
Methyl cellulose ether yog siv los ua cov thickener los kho qhov sib xws ntawm lub cev.
(2) Kho cov dej xav tau
Nyob rau hauv lub gypsum mortar system, dej xav tau yog ib qho tseem ceeb parameter.Qhov kev xav tau ntawm cov dej hauv paus, thiab cov khoom sib xyaw mortar, nyob ntawm qhov tsim ntawm gypsum mortar, piv txwv li, limestone, perlite, thiab lwm yam ntxiv.Kev koom ua ke ntawm methyl cellulose ether tuaj yeem kho cov dej xav tau thiab cov khoom pov tseg ntawm gypsum mortar.
(3) Kev ruaj ntseg dej
Cov dej tuav ntawm methyl cellulose ether, ib qho tuaj yeem kho lub sijhawm qhib thiab coagulation txheej txheem ntawm gypsum mortar system, thiaj li kho lub sijhawm ua haujlwm ntawm lub cev;ob lub methyl cellulose ether tuaj yeem maj mam tso dej rau lub sijhawm ntev Lub peev xwm ua kom muaj kev sib raug zoo ntawm cov khoom thiab cov substrate.
(4) Kho cov rheology
Qhov sib ntxiv ntawm methyl cellulose ether tuaj yeem kho qhov rheology ntawm plastering gypsum system, yog li txhim kho kev ua haujlwm: gypsum mortar muaj kev ua haujlwm zoo dua, kev ua haujlwm zoo dua los tiv thaiv sag, tsis muaj adhesion nrog cov cuab yeej siv thiab kev ua haujlwm siab dua, thiab lwm yam.
Yuav ua li cas xaiv qhov haum methyl cellulose ether?
Teb: Methyl cellulose ether cov khoom muaj cov yam ntxwv sib txawv raws li lawv txoj kev etherification, degree ntawm etherification, viscosity ntawm aqueous tov, lub cev muaj zog xws li particle fineness, solubility yam ntxwv thiab kev hloov kho txoj kev.Txhawm rau kom tau txais txiaj ntsig zoo tshaj plaws, nws yog ib qho tsim nyog yuav tsum xaiv lub npe ntawm cellulose ether kom raug rau daim ntawv thov sib txawv, thiab cov npe xaiv ntawm methyl cellulose ether yuav tsum sib haum nrog cov tshuaj khib nyiab siv.
Methyl cellulose ethers muaj nyob rau hauv txawv viscosities kom haum rau ntau yam kev xav tau.Methyl cellulose ether tuaj yeem ua lub luag haujlwm tsuas yog tom qab yaj, thiab nws qhov kev sib cais yuav tsum tau ua raws li daim ntawv thov thiab kev tsim kho.Cov khoom siv hmoov zoo yog tsim rau cov tshuab ziab khaub ncaws qhuav (xws li cov tshuaj tsuag plastering plaster).Cov khoom zoo heev ntawm methyl cellulose ether tuaj yeem ua kom tawg sai sai, kom nws cov kev ua tau zoo tuaj yeem ua haujlwm tau zoo hauv lub sijhawm luv luv tom qab tsim cov mortar ntub.Nws ua rau kom qhov sib xws thiab dej tuav ntawm mortar hauv lub sijhawm luv luv.Cov yam ntxwv no tshwj xeeb tshaj yog tsim rau kev tsim kho tshuab, vim hais tias feem ntau, lub sijhawm sib xyaw ntawm cov dej thiab cov tshuaj khib nyiab qhuav yog luv heev thaum siv tshuab.
Dab tsi yog dej tuav ntawm methyl cellulose ether?
Teb: Qhov kev ua tau zoo tshaj plaws ntawm cov qib sib txawv ntawm methyl cellulose ether (MC) yog lawv cov dej khaws cia hauv cov khoom siv hauv tsev.Txhawm rau kom tau txais kev ua haujlwm zoo, nws yog ib qho tsim nyog yuav tsum khaws cov dej noo txaus nyob rau hauv mortar ntev.Vim tias cov dej ua cov roj nplua nyeem thiab cov kuab tshuaj ntawm cov khoom siv tsis zoo, cov txheej txheej nyias nyias tuaj yeem muab pov tseg thiab cov mortars tuaj yeem kis tau nrog cov trowels.Cov phab ntsa lossis cov vuas tsis tas yuav tsum tau ua ntej ntub dej tom qab siv cellulose ether-ntxiv mortar.Yog li MC tuaj yeem nqa cov txiaj ntsig kev tsim kho sai thiab kev lag luam.
Txhawm rau teeb tsa, cov ntaub ntawv cementitious xws li gypsum yuav tsum tau hydrated nrog dej.Tus nqi tsim nyog ntawm MC tuaj yeem khaws cov dej noo nyob rau hauv mortar rau lub sijhawm ntev txaus, kom cov txheej txheem kev teeb tsa thiab tawv tawv tuaj yeem txuas ntxiv mus.Tus nqi ntawm MC yuav tsum tau kom muaj peev xwm tuav tau dej txaus nyob ntawm qhov nqus ntawm lub hauv paus, muaj pes tsawg leeg ntawm mortar, thickness ntawm cov mortar txheej, cov dej xav tau ntawm cov mortar, thiab lub sij hawm teem caij ntawm cov khoom cementitious.
Qhov zoo dua qhov me me ntawm MC, qhov ceev ntawm cov mortar thickens.
Post lub sij hawm: Feb-02-2023