Hydroxypropyl Methyl Cellulose (HPMC) yog cov khoom siv ntau yam polymer uas pom kev siv dav hauv ntau yam khoom siv hauv tsev vim nws cov khoom tshwj xeeb. Qhov no cellulose ether derivative yog muab los ntawm tej yam ntuj tso cellulose thiab yog dav siv nyob rau hauv cov khoom siv rau nws cov dej tuav, thickening, thiab binding peev xwm.
1. Taw qhia rau Hydroxypropyl Methyl Cellulose (HPMC)
Hydroxypropyl Methyl Cellulose yog non-ionic cellulose ether uas tau txais los ntawm kev kho cov cellulose ntuj nrog propylene oxide thiab methyl chloride. Nws yog soluble nyob rau hauv dej thiab tsim ib pob tshab, viscous tov. Qhov ntau yam ntawm HPMC tshwm sim los ntawm nws lub peev xwm los hloov kho rheological zog, tuav dej, thiab adhesion hauv cov khoom siv.
2. Daim ntawv thov hauv Mortar
2.1. Kev tuav dej
HPMC feem ntau yog siv rau hauv mortar formulations los txhim kho dej tuav. Nws qhov xwm txheej hydrophilic tso cai rau nws nqus thiab khaws cov dej, tiv thaiv kom qhuav ntxov ntxov ntawm mortar. Cov cuab yeej no ua kom muaj kev ua haujlwm zoo dua, lub sijhawm teem sijhawm ntev, thiab txhim kho adhesion rau substrates.
2.2. Thickening thiab Rheology Control
Qhov sib ntxiv ntawm HPMC nyob rau hauv mortar formulations imparts ntshaw thickening zog, cuam tshuam tus cwj pwm rheological ntawm cov sib tov. Qhov no yog qhov tseem ceeb rau kev yooj yim ntawm daim ntawv thov thiab ua tiav qhov xav tau sib xws hauv mortar.
2.3. Txhim kho Adhesion
Kev koom ua ke HPMC hauv mortar txhim kho adhesion rau ntau qhov chaw, ua rau lub zog tag nrho thiab ua haujlwm ntev ntawm cov khoom siv. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev siv xws li kev teeb tsa cov pobzeb ceramic.
3. Daim ntawv thov hauv pobzeb nplaum thiab grouts
3.1. Txhim khu kev ua haujlwm
Cov nplaum nplaum feem ntau muaj HPMC los txhim kho kev ua haujlwm thiab lub sijhawm qhib. Lub polymer ua kom ntseeg tau tias cov nplaum tseem nyob hauv lub xeev ua haujlwm tau ntev, tso cai rau kev tso cov pobzeb kom zoo yam tsis muaj ziab ntxov ntxov.
3.2. Txo Sagging
HPMC pab txhawb rau cov khoom tiv thaiv sagging ntawm cov nplais nplaum. Qhov no yog qhov tseem ceeb thaum txhim kho cov vuas rau ntawm qhov chaw ntsug, vim nws tiv thaiv cov vuas los ntawm zawv zawg ua ntej cov nplaum nplaum.
3.3. Crack Resistance hauv Grouts
Nyob rau hauv grout formulations, HPMC pab tiv thaiv kom txhob tawg los ntawm muab yooj thiab txo shrinkage. Qhov no tshwj xeeb tshaj yog muaj txiaj ntsig zoo nyob rau hauv ib puag ncig uas qhov kub hloov pauv tuaj yeem cuam tshuam rau cov khoom siv hauv tsev.
4. Kev siv hauv Plaster
4.1. Txhim kho kev ua haujlwm thiab nthuav dav
HPMC feem ntau ntxiv rau plaster formulations txhim khu kev ua hauj lwm thiab kis tau tus mob. Lub polymer pab ua kom tiav daim ntawv thov ntawm plaster rau ntawm qhov chaw smoother thiab zoo ib yam.
4.2. Crack Resistance
Zoo ib yam li nws lub luag haujlwm hauv grouts, HPMC pab txhawb kom tawg tsis kam hauv plaster. Nws tsim ib zaj duab xis hloov tau yooj yim uas haum rau lub ntuj txav ntawm cov khoom siv hauv tsev, txo qhov kev pheej hmoo ntawm cov kab nrib pleb.
5. Cov ntawv thov hauv Cov Txheej Txheem Ua Haujlwm Tus Kheej
5.1. Flow Control
Nyob rau hauv tus kheej-leveling tebchaw, HPMC yog siv los tswj cov dej ntws thiab leveling zog. Cov polymer ua kom muaj kev sib faib sib luag thiab pab tswj cov thickness uas xav tau ntawm cov khoom sib txuas thoob plaws hauv daim ntawv thov.
5.2. Txhim kho Adhesion
HPMC txhim khu cov adhesion ntawm tus kheej-leveling tebchaw rau ntau yam substrates, muab ib tug muaj zog thiab ruaj daim ntawv cog lus. Qhov no yog qhov tseem ceeb heev rau kev ua haujlwm ntev ntawm qhov chaw leveled.
6. Cov lus xaus
Hydroxypropyl Methyl Cellulose ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm ntau yam khoom siv hauv tsev. Nws daim ntawv thov nyob rau hauv mortar, pobzeb adhesives, grouts, plaster, thiab nws tus kheej-leveling tebchaw showcase nws versatility thiab zoo nyob rau hauv kev tsim kho kev lag luam. Cov khoom tshwj xeeb ntawm HPMC, suav nrog kev tuav dej, thickening, thiab txhim kho adhesion, pab txhawb rau tag nrho cov khoom zoo, durability, thiab kev ua haujlwm ntawm cov khoom siv hauv tsev. Raws li kev tsim kho kev lag luam txuas ntxiv mus, HPMC tseem yog cov khoom tseem ceeb hauv kev tsim cov khoom siv hauv tsev siab heev thiab ua tau zoo.
Post lub sij hawm: Jan-10-2024