Hydroxypropyl methylcellulose (HPMC)yog ib qho cellulose ether uas tsis yog ionic ua los ntawm cov khoom siv polymer ntuj cellulose los ntawm ntau yam kev ua tshuaj lom neeg. Lawv yog cov hmoov dawb tsis muaj ntxhiab, tsis muaj saj thiab tsis muaj tshuaj lom uas swells hauv dej txias mus rau hauv cov kua colloidal meej lossis me ntsis fazy. Muaj cov yam ntxwv ntawm thickening, binding, dispersing, emulsifying, zaj duab xis-tsim, suspending, adsorbing, gelling, surface properties, khaws cia noo noo thiab tiv thaiv colloids. Hydroxypropyl methylcellulose, methylcellulose tuaj yeem siv rau hauv cov ntaub ntawv tsim kho, kev lag luam txheej, cov khoom siv hluavtaws, kev lag luam ceramics, tshuaj, khoom noj, textile, kev ua liaj ua teb, tshuaj txhua hnub thiab lwm yam lag luam.
Daim ntawv thov tseem ceeb ntawm hydroxypropyl methylcellulose HPMC hauv cov ntaub ntawv tsim kho:
1 Cov cement plastering grout
①Txhim kho qhov sib npaug, ua kom cov plastering nplaum yooj yim dua rau trowel, txhim kho kev tiv thaiv sag, txhim kho fluidity thiab pumpability, thiab txhim kho kev ua haujlwm zoo.
② Kev khaws dej ntau, ua kom lub sijhawm tso cov mortar ntev dua, txhim kho kev ua haujlwm zoo, thiab pab txhawb kev ua kom cov mortar hydration thiab solidification kom tsim tau lub zog siab.
③ Tswj kev nkag ntawm huab cua kom tshem tawm cov kab nrib pleb ntawm qhov chaw txheej thiab tsim kom muaj qhov chaw du zoo tagnrho.
2 Cov khoom siv plastering gypsum thiab cov khoom gypsum
①Txhim kho qhov sib npaug, ua kom cov plastering nplaum yooj yim dua rau trowel, txhim kho kev tiv thaiv sag, txhim kho fluidity thiab pumpability, thiab txhim kho kev ua haujlwm zoo.
② Kev khaws dej ntau, ua kom lub sijhawm tso cov mortar ntev dua, txhim kho kev ua haujlwm zoo, thiab pab txhawb kev ua kom cov mortar hydration thiab solidification kom tsim tau lub zog siab.
③ Tswj qhov sib xws ntawm cov mortar kom sib xws thiab tsim cov txheej txheem zoo tagnrho.
3 Cov av nplaum masonry
①Txhim kho qhov lo rau ntawm qhov chaw masonry, txhim kho qhov khaws dej, thiab txhim kho lub zog ntawm cov mortar.
②Txhim kho lubricity thiab plasticity, thiab txhim kho kev ua haujlwm; cov mortar txhim kho los ntawm cellulose ether yooj yim dua rau kev tsim kho, txuag lub sijhawm tsim kho thiab txo cov nqi tsim kho.
③ Cov cellulose ether uas khaws dej tau zoo heev, tsim nyog rau cov cib uas nqus dej tau zoo.
4 daim ntawv sib koom ua ke filler
①Kev khaws dej zoo heev, ua kom lub sijhawm qhib ntev dua thiab txhim kho kev ua haujlwm kom zoo. Cov roj nplua nyeem ntau, yooj yim dua rau kev sib tov.
②Txhim kho qhov tsis kam ntawm shrinkage thiab tawg tsis kam, thiab txhim kho qhov zoo ntawm cov txheej.
③Txhim kho qhov kev sib txuas ntawm qhov chaw sib txuas thiab muab cov qauv du thiab du.
5 Cov Nplaum Rau Pobzeb
① Yooj yim rau qhuav sib tov cov khoom xyaw, tsis muaj pob yuav tsim, daim ntawv thov ceev yuav nce ntxiv, kev ua haujlwm tsim kho yuav zoo dua, lub sijhawm ua haujlwm yuav raug txuag, thiab tus nqi ua haujlwm yuav raug txo qis.
② Los ntawm kev ncua lub sijhawm qhib, nws txhim kho qhov ua tau zoo ntawm kev tiling thiab muab cov nyhuv zoo heev.
6 Cov ntaub ntawv hauv pem teb uas siv tau tus kheej
① Muab viscosity thiab siv tau ua ib qho kev pab tiv thaiv kev sib sau ua ke.
②Txhim kho qhov pumpability ntawm fluidity thiab txhim kho qhov ua tau zoo ntawm paving.
③ Tswj cov dej khaws cia thiab ntsws kom txo cov kab nrib pleb thiab ntsws ntawm hauv av.
7 Xim pleev xim raws li dej
①Tiv thaiv kom tsis txhob muaj nag los thiab ua kom lub thawv ntev dua. Kev ruaj khov ntawm cov khoom muaj sia nyob thiab sib haum xeeb zoo nrog lwm cov khoom.
②Txhim kho qhov fluidity, muab kev tiv thaiv zoo splash, tiv thaiv sag thiab leveling, thiab xyuas kom meej zoo meej nto finish.
8 daim ntawv nplaum phab ntsa
① Sai sai yaj yam tsis muaj agglomeration, uas yooj yim rau kev sib tov.
②Muab lub zog sib txuas siab.
9 Lub rooj tsavxwm cement extruded
①Nws muaj kev nplaum siab thiab lubricity, thiab ua rau cov txheej txheem ntawm cov khoom extruded zoo dua.
② Txhim kho lub zog ntsuab, txhawb kev ua kom dej noo thiab kho kom zoo, thiab txhim kho cov qoob loo.
10 cov khoom HPMC rau cov tshuaj mortar sib xyaw ua ke
LubHPMCCov khoom siv tshwj xeeb rau cov mortar sib xyaw ua ke muaj cov dej khaws cia zoo dua li cov khoom siv hauv cov mortar sib xyaw ua ke, ua kom ntseeg tau tias cov khoom siv inorganic cementitious tau hydrated tag nrho, thiab tiv thaiv qhov txo qis ntawm lub zog sib txuas los ntawm kev qhuav thiab tawg ntau dhau los ntawm kev qhuav shrinkage. HPMC kuj muaj qee qhov cuam tshuam rau huab cua nkag. Cov khoom HPMC tshwj xeeb siv rau cov mortar sib xyaw ua ke muaj qhov tsim nyog, sib xws thiab me me cua nkag, uas tuaj yeem txhim kho lub zog thiab plastering ntawm cov mortar sib xyaw ua ke. Cov khoom HPMC tshwj xeeb siv rau cov mortar sib xyaw ua ke muaj qee qhov cuam tshuam qeeb, uas tuaj yeem ncua lub sijhawm qhib ntawm cov mortar sib xyaw ua ke thiab txo qhov nyuaj ntawm kev tsim kho. Hydroxypropyl methylcellulose (HPMC) yog cov cellulose ether tsis-ionic ua los ntawm cov khoom siv polymer ntuj cellulose los ntawm ntau yam kev ua tshuaj lom neeg. Lawv yog cov hmoov dawb tsis muaj ntxhiab, tsis muaj saj thiab tsis muaj tshuaj lom uas swells hauv dej txias rau hauv cov kua colloidal meej lossis me ntsis hazy. Muaj cov khoom ntawm thickening, binding, dispersing, emulsifying, zaj duab xis-forming, suspending, adsorbing, gelling, surface properties, retaining moisture thiab tiv thaiv colloids. Hydroxypropyl methylcellulose, methylcellulose siv tau rau hauv cov ntaub ntawv siv hauv tsev, kev lag luam txheej, synthetic resin, ceramics industry, tshuaj, khoom noj, textile, kev ua liaj ua teb, tshuaj txhua hnub thiab lwm yam lag luam.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024