Hydroxypropyl Methylcellulose (HPMC) yog ib qho tseem ceeb polymer cellulose ether, dav siv hauv kev tsim kho, tshuaj, zaub mov, tshuaj pleev ib ce thiab lwm yam. Hauv mortar qhuav, HPMC yog ib qho tseem ceeb ntxiv, feem ntau yog siv los txhim kho nws cov adhesion, dej tuav, kev tsim kho thiab lwm yam ntxwv, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov uas muaj viscosity siab.
Cov yam ntxwv tseem ceeb ntawm HPMC
HPMC yog tshuaj hloov kho los ntawm cov khoom siv ntuj polymer cellulose. Nws muaj dej solubility zoo, nonionicity thiab biodegradability, uas ua rau nws ib puag ncig tus phooj ywg thiab nyab xeeb additive. HPMC muaj cov thickening zoo heev, film-forming, dej tuav, suspending thiab emulsifying zog, uas ua rau nws lug siv nyob rau hauv qhuav mortar.
Lub luag hauj lwm ntawm HPMC nyob rau hauv qhuav mortar
Kev tuav dej: HPMC tuaj yeem txhim kho cov dej khaws cia ntawm cov mortar qhuav thiab txo cov dej poob thaum tsim kho. Qhov no yog qhov tseem ceeb kom tsis txhob tawg thiab poob ntawm lub zog los ntawm cov mortar poob dej sai heev. Tshwj xeeb tshaj yog nyob rau hauv huab cua kub thiab qhuav, kev tuav dej yog qhov tseem ceeb tshwj xeeb.
Cov nyhuv Thickening: HPMC tuaj yeem ua kom cov viscosity ntawm cov mortar qhuav, ua kom muaj dej ntau dua thiab ua haujlwm tau zoo thaum tsim kho. High viscosity HPMC tuaj yeem ua rau nws sagging tsis kam nyob rau hauv mortar qhuav, ua rau nws tsim nyog rau kev tsim kho ntawm ntsug lossis tshem tawm qhov chaw.
Txhim kho kev tsim kho: HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov mortar qhuav, ua kom yooj yim rau kev sib kis thiab qib. Cov cuab yeej no yog ib qho tseem ceeb tshwj xeeb hauv kev tsim cov txheej txheej nyias, xws li plastering mortars siv hauv tiling thiab kho kom zoo nkauj sab hauv thiab sab nrauv phab ntsa.
Bonding zog: HPMC tuaj yeem txhim kho lub zog sib txuas ntawm cov mortar qhuav, tshwj xeeb tshaj yog muab kev sib txuas zoo ntawm cov khoom siv hauv paus thiab cov khoom siv saum npoo. Qhov no yog qhov tseem ceeb los xyuas kom meej qhov zoo ntawm kev ua haujlwm thiab txuas ntxiv lub neej ntawm lub tsev.
Yuav siv HPMC li cas thiab ceev faj
Thaum ntxiv HPMC rau mortar qhuav, nws feem ntau yog tov nrog lwm cov ntaub ntawv nyob rau hauv daim ntawv ntawm cov hmoov qhuav. Qhov sib ntxiv ntawm HPMC feem ntau yog nyob nruab nrab ntawm 0.1% thiab 0.5%, uas tau hloov kho raws li kev thov sib txawv thiab cov qauv khoom. Thaum siv, yuav tsum tau them nyiaj mloog mus rau nws cov txheej txheem dissolution kom tsis txhob agglomeration. Nws yog feem ntau pom zoo tias thaum sib tov mortar qhuav, HPMC yuav tsum tau muab sib xyaw nrog lwm cov hmoov, thiab tom qab ntawd dej yuav tsum tau ntxiv rau nplawm kom ntseeg tau tias nws tag nrho yaj thiab tawg.
Raws li ib qho tseem ceeb additive nyob rau hauv high-viscosity qhuav mortar, hydroxypropyl methylcellulose occupies ib qho tseem ceeb txoj hauj lwm nyob rau hauv niaj hnub kev tsim kho vim nws cov kev ua tau zoo heev. Los ntawm kev txhim kho cov dej tuav, cov nyhuv thickening, kev tsim kho kev ua tau zoo thiab kev sib txuas ntawm cov mortar qhuav, HPMC muab cov kev daws teeb meem zoo rau kev txhim kho cov khoom siv hauv tsev. Nyob rau tib lub sijhawm, raws li cov khoom siv ib puag ncig, HPMC muaj kev thov dav dav hauv cov khoom siv hauv tsev.
Post lub sij hawm: Aug-03-2024