qhia:
Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv hluav taws xob ntau yam siv dav hauv kev tsim kho kev lag luam, nrog rau ib qho ntawm nws cov ntawv thov tseem ceeb hauv cov pobzeb grouting.Pobzeb grout plays lub luag haujlwm tseem ceeb hauv kev txhim kho kev zoo nkauj thiab ua haujlwm ntev ntawm cov nplais pobzeb.Raws li ib qho ntxiv hauv cov pobzeb grout formulations, HPMC muaj ntau yam muaj txiaj ntsig zoo, ua rau nws yog ib qho tseem ceeb hauv kev tsim kho niaj hnub.
1. Kev ua haujlwm ntawm HPMC:
Chemical structure:
HPMC yog hloov kho cellulose ether muab los ntawm ntuj cellulose.
Cov qauv tshuaj muaj cov pob txha cellulose uas txuas nrog hydroxypropyl thiab methyl pawg.
Kev tuav dej:
HPMC muaj cov khoom tuav dej zoo heev, uas yog qhov tseem ceeb rau cov pobzeb grout kom muaj peev xwm ua haujlwm thiab tiv thaiv kom qhuav ntxov ntxov.
Thickening peev xwm:
Lub peev xwm thickening ntawm HPMC pab kom qhov sib xws ntawm cov grout, ua kom yooj yim ntawm daim ntawv thov thiab txhim kho adhesion rau cov pobzeb nto.
Teem sijhawm tswj:
HPMC pab tswj lub sijhawm teeb tsa ntawm cov nplais pobzeb, tso cai rau kev hloov kho kom raug thiab ua kom zoo ntawm cov vuas ua ntej grout hardens.
Txhim kho adhesion:
Lub polymer cov nplaum nplaum txhim khu kev sib raug zoo ntawm grout thiab pobzeb, ua kom durability thiab txo qhov kev pheej hmoo ntawm grout tsis ua hauj lwm.
2. Lub luag hauj lwm ntawm HPMC hauv ceramic pobzeb grouting:
Kev tuav dej thiab kev ua haujlwm:
HPMC lub peev xwm tuav dej kom ntseeg tau tias cov grout tseem siv tau nyob rau lub sijhawm ntev, tso cai rau kev siv yooj yim thiab ua kom zoo ntawm cov pob qij txha.
Thickness thiab tuab:
Lub thickening kev txiav txim ntawm HPMC pab ua kom tiav qhov xav tau grout sib xws, tiv thaiv sagging thiab xyuas kom meej txawm tias kev pab them nqi ntawm ntsug thiab kab rov tav.
Teem sijhawm hloov kho:
Los ntawm kev tswj lub sijhawm teeb tsa, HPMC tuaj yeem hloov kho kom haum rau kev hloov pauv ntawm qhov kub thiab txias.
Ua kom durability:
HPMC txoj kev txhim kho adhesion thiab kev sib txuas cov khoom pab txhim kho tag nrho cov kav ntev ntawm cov pobzeb grout, txo qhov kev pheej hmoo ntawm kev tawg thiab tawg thaum lub sijhawm.
peb.Kev tsim cov txheej txheem ntawm HPMC rau pobzeb grouting:
Kev xaiv raw khoom:
Kev tsim khoom ntawm HPMC thawj zaug xaiv cov cellulose zoo li cov khoom siv raw, feem ntau yog muab los ntawm cov ntoo pulp lossis paj rwb.
Etherification txheej txheem:
Cellulose yog etherified los ntawm kev qhia hydroxypropyl thiab methyl pawg los tsim HPMC.
Purification thiab ziab:
HPMC synthesized yog purified kom tshem tawm impurities thiab ces qhuav kom tau ib tug zaum kawg hmoov los yog granular daim ntawv haum rau incorporation rau hauv cov pobzeb grout formulations.
QC:
Kev tswj xyuas nruj nruj yog siv los xyuas kom meej tias HPMC ua tau raws li qhov xav tau tshwj xeeb xws li viscosity, particle loj thiab cov ntsiab lus noo noo.
Plaub.Daim ntawv thov:
Dosage thiab formulation:
Tus nqi tsim nyog ntawm HPMC nyob rau hauv cov pobzeb grout formulation yog nyob ntawm tej yam xws li xav tau kev sib xws, teem sij hawm thiab cov kev thov tshwj xeeb.
Txoj kev sib tov:
Cov txheej txheem sib xyaw kom raug yog qhov tseem ceeb kom ua tiav qhov sib txawv ntawm HPMC hauv kev sib xyaw ua ke, ua kom muaj kev sib raug zoo, thiab tsis txhob sib cais.
Environmental factor:
Thaum lub sij hawm thov thiab kho cov theem, ib puag ncig yam xws li kub thiab av noo yuav tsum tau txiav txim siab los ua kom zoo dua qhov kev ua tau zoo ntawm HPMC hauv pobzeb grout.
Compatibility nrog additives:
Compatibility nrog rau lwm yam additives, xws li pigments los yog antimicrobials, yuav tsum tau soj ntsuam xyuas kom meej tias tag nrho cov kev ua tau zoo ntawm cov pobzeb grout tsis cuam tshuam.
5. Xaus:
Hydroxypropyl methylcellulose (HPMC) plays lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm cov nplais pobzeb hauv ntau hom kev tsim kho.Nws cov khoom tshwj xeeb, suav nrog kev tuav dej, muaj peev xwm thickening thiab tswj lub sijhawm, pab txhim kho kev ua haujlwm, adhesion thiab durability ntawm cov pobzeb grout formulations.Kev nkag siab txog cov khoom thiab lub peev xwm ntawm HPMC, nrog rau kev tsim khoom tsim nyog thiab kev txiav txim siab ntawm daim ntawv thov, yog qhov tseem ceeb kom tau txais cov txiaj ntsig zoo tshaj plaws hauv koj qhov project grouting pobzeb.Raws li kev tsim kho txuas ntxiv mus ntxiv, HPMC tseem yog qhov tseem ceeb thiab muaj txiaj ntsig zoo ntxiv hauv kev nrhiav cov khoom zoo, ntev ntev ntawm cov nplais pobzeb.
Post lub sij hawm: Nov-30-2023