Hydroxypropylmethylcellulose (HPMC) yog cellulose-raws li polymer lug siv los ua cov thickener, binder thiab stabilizer nyob rau hauv ntau yam kev siv, nrog rau kev tsim kho kev lag luam. Hauv kev ua vaj tse, HPMC feem ntau yog siv los ua cov dej tuav dej thiab ua kom muaj peev xwm ua haujlwm, uas tuaj yeem txhim kho kev ua haujlwm thiab ua haujlwm ntev ntawm cov pob zeb. Tus nqi ntawm HPMC siv hauv pob zeb yog qhov tseem ceeb kom ua tiav cov txiaj ntsig xav tau.
Tus nqi ntawm HPMC xav tau hauv pob zeb yog nyob ntawm daim ntawv thov tshwj xeeb, hom cement siv thiab ib puag ncig. Feem ntau, tus nqi ntawm HPMC siv li ntawm 0.1% mus rau 0.5% ntawm tag nrho qhov hnyav ntawm cov cement hauv qhov sib tov. Txawm li cas los xij, tus nqi pes tsawg yuav tsum tau txiav txim siab raws li cov khoom xav tau thiab kev ua haujlwm ntawm cov pob zeb.
Ib qho txiaj ntsig tseem ceeb ntawm kev siv HPMC hauv pob zeb yog nws lub peev xwm los txhim kho kev ua haujlwm ntawm kev sib tov. HPMC ua raws li cov roj nplua nyeem, txo kev sib txhuam ntawm cov khoom hauv cov cement thiab pab kom cov dej sib tov ntws zoo dua. Qhov no txhim khu kev ua haujlwm ntawm cov pob zeb ua haujlwm, ua kom yooj yim rau qhov chaw thiab cov duab nrog kev siv zog tsawg thiab kev siv zog. Tsis tas li ntawd, HPMC tuaj yeem pab txo cov dej uas xav tau hauv kev sib tov, txhim kho cov txheej txheem dej thiab lub zog thiab ua haujlwm ntev ntawm cov pob zeb kho.
Lwm qhov zoo ntawm HPMC hauv pob zeb yog nws lub peev xwm khaws dej. HPMC tsim cov qauv zoo li gel uas tuaj yeem tuav cov dej molecules, tiv thaiv lawv los ntawm evaporating los yog absorbed los ntawm ib puag ncig substrate. Qhov no pab tiv thaiv cov pob zeb ntawm qhov ziab kom qhuav thiab tawg ua ntej, uas tuaj yeem cuam tshuam nws cov kav ntev thiab zoo nkauj.
HPMC tseem tuaj yeem txhim kho qhov adhesion thiab kev sib txuas ua haujlwm ntawm pob zeb. Thaum ntxiv rau qhov sib tov, HPMC tsim ib zaj duab xis uas coated rau saum npoo ntawm cov cement hais, pab khi lawv ua ke thiab tsim cov qauv cohesive. Qhov no ua rau cov neeg kho tshuab muaj zog thiab ua haujlwm ntev ntawm cov pob zeb, ua rau nws tiv taus kev tawg, tawg thiab lwm yam kev puas tsuaj.
Txhawm rau kom muaj txiaj ntsig zoo thiab muaj kev nyab xeeb ntawm kev siv HPMC hauv kev ua vaj tse, nws yog ib qho tseem ceeb uas yuav tsum ua raws li cov lus qhia thiab cov kev coj ua zoo tshaj plaws. HPMC yuav tsum tau ntxiv rau qhov sib tov maj mam thiab sib npaug, zoo dua yog siv lub tshuab tov khoom, kom ntseeg tau tias nws tau zoo dispersed thiab muab tso rau hauv qhov sib tov. Qhov sib xws thiab kev ua haujlwm ntawm qhov sib tov yuav tsum tau sim ua ntu zus thiab hloov kho raws li qhov tsim nyog kom ua tiav cov yam ntxwv xav tau thiab kev ua tau zoo.
Nws tseem yog ib qho tseem ceeb uas yuav tau siv HPMC zoo tsim los rau kev ua vaj tse. HPMC yuav tsum tau muab los ntawm cov neeg muab khoom muaj npe nrov thiab kuaj xyuas kom zoo thiab huv si kom ntseeg tau tias nws ua tau raws li cov qauv thiab cov kev qhia tshwj xeeb. Kev khaws cia kom raug thiab tuav ntawm HPMC tseem yog qhov tseem ceeb los tiv thaiv kev kis kab mob lossis kev puas tsuaj uas tuaj yeem ua rau nws qhov kev ua tau zoo thiab kev ua tau zoo.
Zuag qhia tag nrho, kev siv HPMC hauv cov qauv ua vaj tse txhim kho kev ua haujlwm, kev tuav dej, thiab kev sib koom ua ke ntawm cov khoom sib xyaw, ua rau muaj kev ruaj khov, muaj zog dua, thiab cov pob zeb zoo. Los ntawm kev ua raws li cov kev coj ua zoo tshaj plaws thiab cov lus qhia, thiab siv HPMC zoo, cov neeg tsim khoom thiab cov kws tsim khoom tuaj yeem ua tiav cov txiaj ntsig xav tau thiab ua kom muaj kev ua haujlwm ntev thiab kev ntseeg siab ntawm lawv cov qauv tsim.
Post lub sij hawm: Aug-03-2023