Hydroxypropyl methylcellulose yog ib qho tseem ceeb ntawm cellulose ether additives nyob rau hauv mortar qhuav thiab muaj ntau yam dej num hauv mortar.Lub luag haujlwm tseem ceeb ntawm hydroxypropyl methylcellulose hauv cement mortar yog dej tuav thiab thickening.Tsis tas li ntawd, vim nws cov kev cuam tshuam nrog cov cement system, nws kuj tuaj yeem ua lub luag haujlwm hauv kev nkag mus rau huab cua, kev teeb tsa retarding, thiab txhim kho tensile daim ntawv cog lus.Kev npam.
Qhov tseem ceeb tshaj plaws kev ua tau zoo ntawm hydroxypropyl methylcellulose hauv mortar yog dej tuav.Raws li cellulose ether admixture nyob rau hauv mortar, hydroxypropyl methylcellulose yuav siv tau nyob rau hauv yuav luag tag nrho cov khoom mortar, feem ntau yog vim nws cov dej tuav cov khoom.Feem ntau hais lus, cov dej tuav ntawm hydroxypropyl methylcellulose muaj feem xyuam rau nws cov viscosity, qib kev hloov pauv thiab qhov loj me.
Hydroxypropyl methylcellulose yog siv los ua cov thickener, thiab nws cov nyhuv thickening muaj feem xyuam rau qib ntawm kev hloov, particle loj, viscosity thiab degree ntawm kev hloov kho ntawm hydroxypropyl methylcellulose.Feem ntau hais lus, qhov siab dua qhov kev hloov pauv thiab viscosity ntawm cellulose ether, qhov me me ntawm qhov me me thiab qhov pom tseeb ntawm cov nyhuv thickening.
Hauv hydroxypropyl methylcellulose, kev taw qhia ntawm methoxy pawg txo cov zog saum npoo ntawm cov tshuaj aqueous uas muaj hydroxypropyl methylcellulose, yog li hydroxypropyl methylcellulose muaj cov cua nkag mus rau cov cement mortar.Qhia tus nqi tsim nyog ntawm npuas rau hauv mortar.Vim "pob nyhuv" ntawm cov npuas,
Kev tsim kho kev ua tau zoo ntawm cov mortar yog txhim kho, thaum cov kev taw qhia ntawm cov pa npuas ua rau kom cov qoob loo ntawm cov mortar.Ntawm chav kawm, tus nqi ntawm cov cua nkag mus yuav tsum tau tswj.Thaum huab cua ntau dhau lawm, nws tuaj yeem cuam tshuam tsis zoo rau lub zog ntawm mortar.
Hydroxypropyl methylcellulose yuav ncua qhov txheej txheem ntawm cov cement, qeeb qhov chaw thiab cov txheej txheem hardening ntawm cov cement, thiab txuas ntxiv lub sijhawm qhib ntawm mortar raws li.Txawm li cas los xij, qhov kev cuam tshuam no tsis zoo rau mortar hauv qhov chaw txias dua.
Raws li cov khoom siv polymer ntev ntev, hydroxypropyl methylcellulose tuaj yeem txhim kho kev sib raug zoo nrog cov khoom siv hauv paus thaum tswj cov dej noo ntawm cov slurry thaum ntxiv rau cov cement system.
Cov khoom tseem ceeb ntawm HPMC hauv mortar muaj xws li: dej tuav, thickening, ncua sij hawm teem caij, huab cua nkag, txhim kho tensile daim ntawv cog lus, thiab lwm yam.
Post lub sij hawm: Feb-06-2024