Hydroxypropyth Metylcellulose (HPMC) yog qhov tseem ceeb hauv kev sib xyaw ua ke thiab ua lub luag haujlwm tseem ceeb hauv kev txhim kho ntau yam khoom ntawm cov khoom kawg. Qhov no ntau yam polymer yog dav siv nyob rau hauv kev tsim kho cov ntawv thov vim nws lub peev xwm los txhim kho cov khoom ua haujlwm, kev ua yeeb yam ntawm cov khoom lag luam mortars thiab lwm yam khoom siv xis.
1. Taw qhia HPMC:
HydroxypropenCellulose yog cov khoom siv hluavtaws, dej-soluble polymer muab tau los ntawm cellulose, lub ntuj polymer pom nyob hauv tsob ntoo cell phab ntsa. Kev hloov kho tau cuam tshuam nrog kev qhia txog hydroxyprropyl thiab methyl pawg rau hauv lub cellulose cellebone. Qhov kev hloov pauv no txhim kho cov dej-tuav peev, muaj peev xwm ruaj khov thiab rheological cov yam ntxwv ntawm cov polymer.
2. Cov yam ntxwv ntawm HPMC:
Cov qauv tshuaj: Tus qauv tshuaj ntawm HPMC muaj cov kev rov ua dua ntawm cov piam thaj ua ke ntawm hydroxypropyl thiab methyl pawg. Tus qauv cim tshwj xeeb no muab HPMC cov khoom ntiag tug uas pab txhawb kev cug daim ntaub ntawv cug.
Dej solubility: HPMC yog yooj yim soluble hauv dej, sib sau ua pob tshab, tsis muaj xim. Cov cuab yeej no tso cai rau nws yooj yim tso rau hauv kev sib nraus tsim qauv los txhawb txawm faib.
Thermal Stability: HPMC muaj cov zoo thermal stability, kom tau zoo heev uas nws cov khoom nyob ruaj khov thaum lub sijhawm tsim khoom thiab kev sib xyaw ua ke ntawm cov tshuaj khib qhuav.
Kev sib txuam: HPMC tau sib haum ntawm lwm yam khoom siv hauv tsev, suav nrog cov cement, txiv qaub, ua rau muaj ntau yam ntxiv, ua rau nws xaiv ntau yam.
3. Lub luag haujlwm ntawm HPMC hauv cov tshuaj khib qhuav qhuav:
Dej khaws cia: Ib qho ntawm cov haujlwm tseem ceeb ntawm HPMC yog txhawm rau txhim kho cov dej tuav ntawm lub tshuaj khib. Los ntawm kev sib sau ua zaj duab nyias nyias ntawm cov nplaim hluav taws xob thiab cov dej thaiv kom qhuav thaum ziab kom qhuav thiab ua kom muaj kev ua kom zoo nkauj ntawm txoj kev noj mov ua kom pom tseeb.
Txhim kho kev ua haujlwm: HPMC ua raws li kev kho siab rheology los txhim kho kev ua haujlwm ntawm cov khoom sib xyaw qhuav qhuav. Nws tau zoo tsis kam rau sag, ua cov tshuaj khib, yooj yim dua thov thiab txo qhov kev pheej hmoo ntawm cov khoom uas npleem lossis npuaj.
Txhim kho Adhesion: HPMC txhim kho cug Adhesion rau ntau yam ntawm substrates. Qhov no yog qhov tseem ceeb kom ua tiav kev ua kom muaj zog thiab ntev ntev ntawm cov kab tshuaj khib thiab lub tsev.
Kev tswj raws kev tswj: HPMC pab tswj cov xwm txheej ntawm cug sib tov, ua kom muaj txiaj ntsig thiab yooj yim ntawm daim ntawv thov.
4. Cov txiaj ntsig ntawm kev siv HPMC hauv cov tshuaj khib qhuav qhuav:
Txhim kho kev ua tau zoo: qhov sib ntxiv ntawm HPMC kom qhuav pub tshuaj kho cov yam ntxwv ua tau zoo xws li muaj zog hloov zog ntawm lub zog, zoo dua tsis kam thiab ua rau muaj kev phom sij.
Txo cov chaw pov tseg: Cov khoom siv dej-khaws cia ntawm HPMC pab txo qis shrinkage thaum lub sij hawm kho tau, yog li txo qhov kev nruam hauv cov qauv kawg.
Lub sijhawm qhib qhib lub sijhawm zoo: HPMC txuas lub sijhawm qhib ntawm lub tshuaj khib, yog li ncua sijhawm ntawm kev thov thiab chaw teeb tsa. Qhov no yog qhov tseem ceeb tshaj plaws hauv cov haujlwm loj.
Versilility: HPMC yog ntau yam thiab tuaj yeem siv nrog txhua hom kev sib xyaw qhuav, suav nrog cov nplais nplaum, grouts, stucco thiab tus kheej theem sib txuas.
5. Daim ntawv thov ntawm HPMC hauv cov tshuaj khib qhuav qhuav:
Pobzeb Cov Ntawv Qhia: HPMC yog feem ntau siv nyob rau hauv cov nplais nplaum nplaum txhawm rau txhawm rau txhim kho adhesion, kev ua haujlwm thiab dej rov qab.
Cug ntxiv cov lus qhia: HPMC yog qhov tseem ceeb ntxiv hauv txoj kab kab ua haujlwm uas pab txhim kho kev tshuaj khib tag nrho.
Gypsum: Hauv Gypsum cov qauv, HPMC txhim kho kev ua haujlwm, adhesion thiab ruaj khov rau smoother, muaj zog tiav.
Kev Ntsuas Tus Kheej Theem: HPMC yog siv rau hauv kev ntsuas tus kheej kom ua tiav kom ua tiav cov khoom siv hluav taws xob uas yuav tsum tau yooj yim thiab qib.
6. Xaus:
HydroxyPropyyl methylcellose (HPMC) ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo thiab kev ua tau zoo ntawm kev sib xyaw qhuav. Nws cov qauv tshuaj tshwj xeeb, cov dej solubility, thiab sib xyaw nrog ntau yam khoom siv hauv tsev ua rau ntau yam kev siv. Raws li kev tsim kho kev tsim kho txuas ntxiv mus evolve, qhov xav tau ntawm cov ntaub ntawv tsim tau zoo thiab muaj zog tsim kev tsim kho tshiab hauv kev siv HPMC hauv kev sib xyaw ua ke. Kev tshawb fawb txuas ntxiv thiab kev loj hlob hauv thaj chaw no yuav ua rau ua rau muaj kev daws teeb meem zoo dua qub.
Lub Sijhawm Post: Feb-19-2025