Hydroxypropyl methylcellulose (HPMC) yog ntau yam polymer siv nyob rau hauv ntau yam kev lag luam, nrog rau kev tsim kho.Hauv thaj chaw ntawm gypsum plaster, HPMC muaj ntau yam kev siv thiab ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo thiab zoo ntawm plaster.
Kawm txog Hydroxypropyl Methylcellulose (HPMC):
1. Cov qauv thiab cov khoom siv tshuaj:
HPMC yog ib tug semi-synthetic dej-soluble polymer muab tau los ntawm cellulose.
Nws muaj cov khoom tshwj xeeb xws li khaws cia dej, ua kom tuab thiab muaj peev xwm ua zaj duab xis.
Cov qauv tshuaj ntawm HPMC suav nrog hydroxypropyl thiab methoxy pawg, uas muab cov khoom tshwj xeeb polymer.
2. Cov txheej txheem tsim khoom:
Cov txheej txheem ntau lawm suav nrog etherification ntawm cellulose, uas ua rau tsim HPMC.
Lub degree ntawm kev hloov ntawm hydroxypropyl thiab methoxy pawg tuaj yeem raug kho kom haum rau cov khoom ntawm cov polymer.
Daim ntawv thov nyob rau hauv gypsum plaster:
1. Kev tuav dej:
HPMC ua raws li tus neeg sawv cev khaws dej hauv gypsum formulations.
Nws pab tswj cov dej noo, tiv thaiv kom qhuav sai thiab ua kom cov dej tsis sib xws ntawm gypsum hais.
2. Txhim kho kev ua haujlwm:
Qhov sib ntxiv ntawm HPMC txhim khu kev ua haujlwm ntawm gypsum plaster.
Nws muab cov plaster sib tov ib tug du thiab creamy sib xws uas ua rau nws yooj yim rau kis rau ntawm qhov chaw.
3. Thickener:
Raws li tus neeg sawv cev thickening, HPMC pab ua kom cov viscosity ntawm gypsum sib tov.
Qhov no pab nrog zoo adhesion rau ntsug nto thiab txo sagging thaum lub sij hawm thov.
4. Teem sijhawm tswj:
HPMC cuam tshuam rau lub sijhawm teeb tsa ntawm gypsum.
Kev noj tshuaj kom tsim nyog tso cai rau lub sijhawm los hloov kho kom tau raws li qhov yuav tsum tau ua.
5. Txhim kho adhesion:
Cov cuab yeej ua yeeb yaj kiab ntawm HPMC txhim kho qhov adhesion ntawm gypsum plaster rau ntau yam substrates.
Qhov no ua rau lub plaster tiav ntau ruaj thiab kav ntev.
6. Kev tiv thaiv tawg:
HPMC pab txhim kho tag nrho lub zog thiab yoog raws ntawm cov cam khwb cia.
Cov polymer pab txo qhov kev pheej hmoo ntawm cov kab nrib pleb, muab cov tawv tawv thiab zoo nkauj zoo nkauj.
7. Compatibility nrog lwm yam additives:
HPMC muaj kev sib raug zoo nrog lwm cov tshuaj ntxiv uas feem ntau siv hauv gypsum formulations.
Qhov no tso cai rau cov creation ntawm customized plaster sib tov raws li ib tug tshwj xeeb project yuav tsum.
Cov Qauv Zoo thiab Cov Txheej Txheem:
1. Cov qauv kev lag luam:
HPMC rau plaster ua raws li cov qauv kev lag luam thiab cov kev cai.
Kev tswj xyuas kev ua tau zoo ua kom muaj kev ua tau zoo thiab kev ntseeg siab.
2. Cov lus pom zoo noj:
Cov neeg tsim khoom muab cov lus qhia ntau npaum li cas raws li cov cai tshwj xeeb ntawm gypsum formulation.
Kev noj tshuaj kom raug yog qhov tseem ceeb kom ua tiav cov khoom xav tau yam tsis muaj kev cuam tshuam kev ua haujlwm.
Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv tseem ceeb hauv gypsum formulations, pab txhim kho nws cov dej tuav, kev ua haujlwm, adhesion thiab kev ua haujlwm tag nrho.Raws li kev tsim kho kev lag luam txuas ntxiv mus, lub luag haujlwm ntawm HPMC hauv kev txhim kho qhov zoo thiab kev ua haujlwm ntawm gypsum plaster tseem yog qhov tseem ceeb.Los ntawm kev nkag siab txog cov khoom siv tshuaj lom neeg thiab kev siv ntawm HPMC, cov kws tshaj lij kev tsim kho kev lag luam tuaj yeem txiav txim siab paub kom ua tiav cov txiaj ntsig zoo tshaj plaws hauv lawv cov phiaj xwm plastering.
Post lub sij hawm: Jan-18-2024