Cellulose ethers, tshwj xeeb tshaj yog hypromellose ethers, yog cov khoom tseem ceeb ntawm kev lag luam mortars. Rau cellulose ether, nws viscosity yog ib qho tseem ceeb Performance index ntawm mortar ntau lawm tuam txhab uas muag, siab viscosity yuav luag dhau los ua qhov kev thov ntawm mortar kev lag luam. Vim muaj kev cuam tshuam ntawm thev naus laus zis, txheej txheem thiab cov cuab yeej siv, nws yog qhov nyuaj los lav qhov siab viscosity ntawm domesticcellulose ethercov khoom rau lub sijhawm ntev. Cellulose ether yog siv los ua cov dej tuav cov neeg sawv cev, cov thickener thiab binder hauv cov khoom siv khib nyiab, uas muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm kev ua haujlwm, ntub dej viscosity, lub sijhawm ua haujlwm thiab kev tsim kho ntawm mortar system. Cov haujlwm no feem ntau ua tiav los ntawm hydrogen daim ntawv cog lus ntawm cellulose ether molecule thiab dej molecule thiab winding kev txiav txim ntawm cellulose ether molecule, qhov tseeb, nws yuav siv sij hawm ib feem ntawm hydrogen daim ntawv cog lus nyob rau hauv lub cellulose ether molecular saw thiab tsis muaj zog entanglement ntawm cellulose ether, uas tsis muaj zog cov dej tuav thiab wetting peev xwm ntawm cellulose ether. Cov neeg tsim khoom khib nyiab feem ntau tsis xav txog qhov no, ntawm ib sab, cov khoom siv khib nyiab hauv tsev tseem yog qhov ntxhib, tseem tsis tau ua tib zoo saib xyuas rau theem ntawm kev ua haujlwm, ntawm qhov tod tes, peb xaiv cov viscosity ntau dua. tshaj li cov kev xav tau viscosity, qhov no kuj tau them nyiaj rau qhov poob ntawm cov dej tuav, tab sis nyob rau hauv lub wettability yog puas.
Qhov kev ua tau zoo ntawm mortar yog cuam tshuam los ntawm cellulose ether uas muaj cov nplaum nplaum hauv cov txheej txheem tsim khoom, hauv daim ntawv no, qhov sib txawv ntawm tensile nplaum lub zog ntawm cov khoom siv cellulose thiab cellulose ether cov khoom ntxiv nrog tackifier hauv ceramic pobzeb nplaum tau txheeb xyuas los ntawm kev sim. Tackifier yog ib yam khoom siv ntxiv los ntawm qee cov tuam txhab cellulose ether txhawm rau txhawm rau tsim cov khoom siv tsis txaus, kev siv tshuab thiab khoom siv. Lub hav zoov ntawm tackifier ua rau cov saw ntev ntev ntawm cellulose ether cross-links thiab ua net-zoo li, uas cuam tshuam rau kev ceev ntawm cellulose ether zaj duab xis tsim thiab lub xeev ntawm zaj duab xis, yog li cuam tshuam rau lub luag hauj lwm ntawm cellulose ether nyob rau hauv mortar, lub direct- saib lub zog yog: lub zog tensile nplaum tau hloov nyob rau hauv txhua qhov kev kho mob; lub sijhawm teem ntawm mortar yog ncua ntev.
1.Raws li tus qauv kho mob, qhov sib ntxiv ntawm tackifier thiab cellulose ether tsis muaj tackifier hauv cov txheej txheem tsim khoom muaj qee yam cuam tshuam rau lub zog tensile nplaum ntawm ceramic pobzeb nplaum, cov khoom ntxiv nrog tackifier hauv cov txheej txheem tsim muaj lub zog tensile adhesive zog. .
2.Nyob rau hauv lub nam ntawm cov dej tsis kam, lub tensile nplaum lub zog ntawm ceramic pobzeb nplaum nrog cellulose ether ntxiv tackifier nyob rau hauv cov txheej txheem ntau lawm yog phem tshaj li ntawm cov khoom uas tsis muaj tackifier nyob rau hauv cov txheej txheem ntau lawm, cellulose ether muaj tackifier cuam tshuam cov dej. tsis kam ntawm cov nplais nplaum.
3.Nyob rau hauv cov nqe lus ntawm huab cua teeb lub sij hawm,cellulose ethernrog tackifier tau siv hauv pobzeb nplaum, nws lub zog tensile nplaum yog qis dua li ntawm cov khoom tsis muaj tackifier, thiab lub sijhawm qhib tau luv.
4.Raws li kev teeb tsa lub sijhawm, kev kho ceev ntawm cellulose ether ceramic pobzeb nplaum tsis ntxiv tackifier hauv cov txheej txheem ntau lawm yog sai dua. Nyob rau hauv cov ntsiab lus, lub xub ntiag ntawm ib tug tackifier, tus ntoo khaub lig-txuas kev txiav txim uas ua rau cov cellulose ether aqueous kua muaj ib tug ntau dua steric hindrance, uas pom tau hais tias siab dua nyob rau hauv lub xeem, tab sis lub hav zoov ntawm tackifier cuam tshuam rau ntau yam tseem ceeb daim ntawv thov zog ntawm cellulose. ether, xws li dej tsis kam, lub sijhawm qhib, wettability thiab lwm yam. Qhov tseeb, viscosity tsuas yog ib qho ntawm cov kev ua tau zoo ntawm cellulose ether, viscosity tsis yog qhov ntsuas tseem ceeb rau kev ua tiav ntawm cellulose ether, tab sis hom thiab cov ntsiab lus ntawm pawg yuav tsum yog lub hom phiaj ntawm mortar manufacturers.
5.Nws kuj yog vim hais tias cov mortar manufacturers them ntau heev rau viscosity, ua rau ib co cellulose ether ntau lawm tuam txhab uas muag kom nce viscosity los ntawm cov ntaub ntawv ntxiv kom tau raws li qhov yuav tsum tau ntawm mortar manufacturers, thiab hom ntawm cov khoom no tsuas muaj ib tug siab viscosity, nws kev. Qhov kev ua tau zoo tsim nyog ntawm cov neeg siv kev xav, thiab qhov pom tseeb siab viscosity tsim los ntawm kev nce viscosity tsis tuaj yeem ua tiav "High viscosity low content" txoj kev xav uas cov tuam txhab mortar xav tau, tab sis tsis muaj nyob hauv qhov tseeb. Txhawm rau xaiv cov cellulose ether, uas yog ib qho tseem ceeb raw khoom nyob rau hauv mortar, cov mortar tuam txhab uas muag nrhiav siab thiab ruaj khov zoo yuav tsum paub ib co ntaub ntawv tom qab, qhov no yuav ua rau cov tuam txhab tsim cov khoom ua tau zoo, kom cov khoom zoo stability.
Post lub sij hawm: Lub Xya hli ntuj-17-2023