1. Hydroxypropyl methylcellulose (HPMC)yog ib qho non-ionic cellulose ether dav siv hauv kev tsim kho kev lag luam, feem ntau yog dispersant, thickener thiab binder. Nws muaj cov dej solubility zoo heev, thickening, dej tuav thiab lubricity, thiab tuaj yeem txhim kho kev tsim kho kev ua tau zoo thiab qhov kawg ntawm cov khoom siv hauv tsev. Yog li ntawd, HPMC tau siv dav hauv cov khoom siv hauv tsev xws li cement mortar, pobzeb nplaum, putty hmoov, self-leveling mortar, thiab lwm yam.
2. Lub luag hauj lwm ntawm HPMC ua ib tug dispersant
Lub luag haujlwm tseem ceeb ntawm cov dispersant yog kom sib npaug faib cov khoom hauv cov dej hauv cov dej, tiv thaiv particle agglomeration, thiab txhim kho kev ruaj ntseg ntawm cov khoom siv. Raws li kev ua kom muaj txiaj ntsig zoo, HPMC ua lub luag haujlwm hauv qab no hauv cov khoom siv hauv tsev:
Tiv thaiv particle sedimentation: HPMC tuaj yeem txo cov sedimentation tus nqi ntawm cov khoom hauv cov cement los yog gypsum slurry, ua kom cov khoom sib tov zoo dua qub, yog li txhim kho cov dej ntws thiab sib xws ntawm cov khoom siv.
Txhim kho kev ua haujlwm ntawm cov ntaub ntawv: Hauv tsev mortar, putty hmoov thiab lwm yam ntaub ntawv, HPMC tuaj yeem txhim kho cov nyhuv dispersion ntawm hmoov, ua kom cov ntaub ntawv smoother thaum lub sij hawm tsim kho, thiab tsis txhob agglomeration thiab agglomeration.
Txhim kho cement hydration cov tshuaj tiv thaiv: HPMC pab kom sib npaug faib cov cement hais, ua kom zoo dua cov txheej txheem dej hydration, thiab txhim kho lub zog thiab ruaj khov ntawm cov cement paste.
3. Lub luag hauj lwm ntawm HPMC ua cov thickener
Lub luag haujlwm tseem ceeb ntawm cov thickener yog ua kom cov viscosity ntawm lub kaw lus kom cov khoom siv hauv tsev muaj kev ua haujlwm zoo dua thaum lub sijhawm tsim kho. Raws li cov thickener zoo heev, HPMC lub luag haujlwm tseem ceeb hauv kev tsim kho kev lag luam suav nrog:
Ua kom cov viscosity ntawm mortar: HPMC tuaj yeem ua kom cov viscosity hauv mortar, putty hmoov, pobzeb nplaum thiab lwm yam khoom siv hauv tsev, ua kom yooj yim rau kev tsim thiab txo cov sagging, tshwj xeeb tshaj yog tsim rau ntsug, xws li phab ntsa txheej.
Txhim khu kev tuav dej: HPMC tuaj yeem txhim kho cov dej tuav lub peev xwm ntawm cov cement mortar, txo cov dej poob, tiv thaiv cov kab nrib pleb los ntawm dej ntau dhau, thiab txhim kho cov khoom siv hauv tsev.
Txhim kho kev tsim kho kom zoo: Hauv cov ntawv thov xws li tus kheej-leveling mortar, HPMC tuaj yeem txhim kho fluidity thiab ua kom cov viscosity tsim nyog, yog li ua kom muaj kev sib kis ntawm cov ntaub ntawv thaum lub sij hawm tsim kho thiab txhim kho lub tiaj tus hauv pem teb.
4. Lub luag haujlwm ntawm HPMC ua tus tuav ntaub ntawv
Lub luag haujlwm tseem ceeb ntawm lub binder yog txhawm rau txhim kho kev sib raug zoo ntawm cov ntaub ntawv thiab xyuas kom muaj kev ruaj khov ntawm kev tsim kho. Raws li kev sib khi, kev thov ntawm HPMC hauv cov khoom siv hauv tsev suav nrog:
Txhim khu lub zog sib txuas ntawm cov nplais nplaum nplaum: HPMC muab cov nplais nplaum nplaum ntau dua cov khoom sib txuas, ua rau cov ntawv cog lus ntawm cov vuas thiab cov txheej hauv paus muaj zog thiab txo qhov kev pheej hmoo ntawm cov vuas poob.
Txhim kho cov adhesion ntawm putty hmoov: Nyob rau hauv phab ntsa putty, HPMC tuaj yeem txhim khu kev sib raug zoo ntawm putty thiab lub hauv paus txheej, txhim kho lub durability thiab tawg tsis kam ntawm putty, thiab xyuas kom meej ib tug du thiab tiaj phab ntsa.
Txhim kho qhov ruaj khov ntawm tus kheej-leveling mortar: HPMC txhim kho lub zog sib txuas ntawm tus kheej-leveling mortar los ntawm kev tswj cov evaporation tus nqi ntawm cov dej, tiv thaiv stratification thiab cracking, thiab ua kom ruaj khov thaum lub sij hawm tsim kho.
Hydroxypropyl methylcellulose (HPMC) plays lub luag haujlwm tseem ceeb hauv kev ua kom tawg, thickener thiab binder nyob rau hauv lub tsev cov ntaub ntawv. Nws tsis tsuas yog txhim kho kev tsim kho kev ua haujlwm ntawm cov khoom siv hauv tsev, tab sis kuj tseem ua kom zoo dua qhov kev siv kawg. HPMC txhim kho qhov fluidity thiab uniformity ntawm mortar los ntawm dispersing cov khoom thiab tiv thaiv sedimentation; nws txhim khu cov viscosity thiab dej tuav cov ntaub ntawv los ntawm thickening, thiab txo cov kab nrib pleb thiab sagging; raws li ib tug binder, nws txhim kho cov adhesion ntawm cov ntaub ntawv xws li cov pobzeb nplaum thiab putty hmoov, kom ntseeg tau lub firmness thiab durability ntawm kev tsim kho. Yog li ntawd, HPMC tau dhau los ua ib qho tseem ceeb ntawm cov khoom siv ntxiv hauv kev tsim kho niaj hnub no, muab kev txhawb zog rau kev txhim kho lub tsev zoo thiab kev tsim kho kom zoo.
Lub sij hawm xa tuaj: Mar-25-2025