HPMC hauv Wet Mortars
JINJI® Hydroxypropyl Methyl Cellulose (HPMC) yog ib qho uas tsis yog-ionic cellulose ether polymer raws li cellulose, ib tug natural polymer muab tau los ntawm refine paj rwb linter.
HPMC tuaj yeem txhim kho kev sib koom ua ke thiab dej tuav ntawm Cov Txwj Laug mortar sib tov.
Dej tuav tus nqi yog qhov tseem ceeb Performance index ntawm Spray Mortar. Txawm hais tias qee cov khoom ntawm mortar thiab pob zeb yog tib yam, lawv ua haujlwm txawv. Feem ntau, pob zeb yog nchuav rau hauv pob zeb thiab ntoo ua haujlwm uas khaws cov dej feem ntau. Lub mortar feem ntau yog siv rau ntawm cov dej-absorbing qhov chaw, thiab cov dej noo nyob rau hauv lub mortar yog yooj yim ploj los yog evaporated rau hauv cov huab cua, yog li cov dej tuav ntawm lub mortar yuav tseem ceeb tshaj li cov pob zeb.
Yog vim li cas vim li cas HPMC txhim kho qhov sib xws ntawm cov tshuaj tsuag mortar yog cov dej khaws cia, tuaj yeem txhim kho cov cohesiveness ntawm mortar, txo cov ntshav ntawm cov mortar rau qee yam, tab sis txhim kho cov fluidity ntawm cov tshuaj mortar hauv qhov ntau npaum li cas; Txawm li cas los xij, cov ntsiab lus siab ntawm Hydroxpropyl Methyl Cellulose ua rau cov khib nyiab ntub dej sib xyaw ua ke, uas txo cov kua dej ntawm cov mortar thiab ua rau cov mortar nyuaj rau kev tsim kho.
HPMC tuaj yeem ua kom lub zog tensile sib txuas ntawm cov khib nyiab ntub dej.
Rau plastering mortar, daim ntawv cog lus lub zog yog ib qho tseem ceeb qhia. Feem ntau hais lus, plastering mortar xav tau kev ua haujlwm zoo. Nyob rau hauv thiaj li yuav tsim ib tug niaj hnub mortar txheej ntawm kev tsim kho nto. Lub zog sib txuas ntawm cov tshuaj khib nyiab tuaj yeem ua rau cov mortar thiab lub hauv paus txheej ruaj khov, thiab kev siv mus ntev yuav tsis ua rau tawg thiab poob.
Cov cellulose ether thiab hydration particles tsim ib txheej nyias ntawm ib zaj duab xis polymer nrog cov nyhuv sealing thiab tiv thaiv dej poob, nrog cov dej tuav zoo, kom nws muaj dej txaus los xyuas kom cov dej thiab lub zog loj hlob ntawm cov cement thiab txhim kho lub zog sib txuas. ntawm paste. Ntawm qhov tod tes, Hydroxpropyl Methyl Cellulose txhim kho cov cohesiveness ntawm cov tshuaj tsuag mortar los xyuas kom meej nws cov yas zoo thiab yooj, txo cov kev ntxhov siab ntawm cov tshuaj tsuag mortar thiab cov substrate specimen interface, thiab ntxiv txhim kho cov kev sib txuas ntawm cov tshuaj khib nyiab.
Nws raug pom zoo tias thaum lub sij hawm kev npaj, HPMC yog tov rau hauv cov tshuaj mortar nyob rau hauv daim ntawv ntawm cov tshuaj es tsis yog ncaj qha mus rau hauv daim ntawv ntawm ib tug hmoov.
Cov qub muaj txiaj ntsig zoo rau kev txhim kho cov dej tuav, cohesion, thiab cov khoom siv ntawm cov tshuaj tsuag mortar. Thaum cov ntsiab lus hloov dua siab tshiab ntawm Hydroxpropyl Methyl Cellulose nyob rau hauv thaj tsam ntawm 0.01% ~ 0.04%, cov dej tuav tus nqi ntawm HPMC hauv daim ntawv tshuaj yog 1.4% ~ 3.0% siab dua li cov hmoov HPMC hauv cov tshuaj tsuag. Yog li ntawd, HPMC tov nyob rau hauv daim ntawv ntawm ib tug tov muaj ib tug zoo ntxim rau kev txhim kho cov dej tuav ntawm cov tshuaj mortar.
