HydroxyPropyyl methylcellulose (HPMC) yog cov ntau ntau polymer dav siv nyob rau hauv ntau yam kev lag luam suav nrog kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog rau kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog rau kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog rau kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog kev tsim kho nrog rau kev tsim kho. Hauv cov ntawv thov gypsum, HPMC pabcuam ua tus muaj txiaj ntsig ntxiv nrog cov txiaj ntsig zoo uas pab txhim kho cov kev ua tau zoo tag nrho thiab kev ua haujlwm zoo ntawm gypsum.
Taw qhia rau hydroxyPropyyl methylulose:
HydroxyPropyyl methylulose yog ib shathetic polymer muab tau los ntawm cellulose, lub ntuj polymer pom hauv cov nroj tsuag. HPMC yog synthesized los ntawm kev kho cellulose nrog cov tshuaj pleev cov antellene oxide thiab methyl chloride, ua rau muaj cov khoom sib xyaw nrog cov niam txiv cellulose txhim kho. Cov qib ntawm kev hloov pauv (DS) ntawm cov pab pawg me me ntawm cov kab cellulose txiav txim siab cov khoom tshwj xeeb ntawm HPMC.
Cov yam ntxwv ntawm HPMC:
Dej khaws cia:
HPMC muaj cov khoom siv hluav taws xob zoo thiab tuaj yeem tsim cov yeeb yaj kiab nyias nyias nyob rau ntawm gypsum kom qeeb qeeb dej evaporation. Qhov no yog qhov tseem ceeb kom ua tiav cov kev kho mob zoo thiab tiv thaiv kom qhuav ntxov ntawm stucco.
Txhim Kho Tshuab Luam Ntawv:
Qhov kev sib txuas ntawm HPMC txhim kho kev ua haujlwm ntawm plaster, ua rau nws yuav yooj yim dua, thov thiab kis. Txhim kho kev sib thooj pab muab cov adixesion thiab cov kev pov hwm zoo ntawm ntau qhov chaw.
Lub sijhawm tswj lub sijhawm:
HPMC tso cai rau kev tswj ntau dua ntawm lub sijhawm teeb lub sijhawm ntawm plaster. Los kho cov ntsiab lus HPMC, cov tuam txhab tsim khoom tuaj yeem tsim tsa lub sijhawm ua raws li kev xav tau tshwj xeeb, kom ua tiav cov ntaub ntawv thov ua kom tiav thiab ua tiav.
Nce Sijhawm Qhib:
Qhib lub sijhawm yog lub sijhawm uas cov plaster tseem ua haujlwm ua haujlwm ua ntej nws teeb. HPMC tau txuas ntxiv nws cov sijhawm qhib los muab cov kws ua haujlwm thiab cov neeg ua haujlwm nrog lub sijhawm so kom txaus rau kev thov thiab ua tiav cov haujlwm.
Txhim kho adhenion:
Cov yeeb yaj kiab ua yeeb yam ntawm HPMC pab txhim kho txoj kev sib raug zoo ntawm cov plaster thiab substrate. Qhov no yog qhov tshwj xeeb tshaj yog qhov tseeb kom paub meej txog qhov ntev thiab ntev ntawm plastered surfaces.
Tawg tsis kam:
HPMC pab txo qis qhov ntxim nyiam ntawm cov kab nrib pleb hauv plaster los ntawm kev nce nws qhov hloov tau thiab lub zog. Qhov no yog qhov tseem ceeb kom tswj cov qauv txheej txheem ntawm cov plastered nto dhau lub sijhawm ntev.
Txhim kho rhuaology:
Rheology yog hais txog kev ntws thiab deformation tus cwj pwm ntawm cov ntaub ntawv. HPMC tuaj yeem hloov kho lub zog rheological ntawm gypsum, muab nws qhov kev xav tau rau kev thov kom yooj yim dua thiab qib siab.
Daim ntawv thov HPMC hauv Gypsum:
Gypsum Plaster:
Hauv Gypsum cov qauv, HPMC feem ntau siv los txhim kho cov dej cia, kev ua haujlwm thiab cov nplaum. Nws kuj tseem yuav pab tswj lub sijhawm thiab txhim kho qhov kev ua tau zoo ntawm Gypsum-raws li stcsum.
Maas-Raws Plastering:
HPMC tau siv dav hauv cov plasters-based plasters uas nws yog tus tseem ceeb ntxiv kom ua tiav rhuahology, qhib lub sij hawm thiab adhesion. Cov sijhawm tswj lub sijhawm yog cov muaj txiaj ntsig tshwj xeeb rau cov haujlwm loj.
Txiv qaub txhuam:
Cov kua txiv qaub plaster los ntawm kev sib ntxiv ntawm HPMC kom txhim kho dej tuav thiab ua haujlwm. Cov polymer qhov sib raug zoo nrog cov khoom siv cov kua qaub ua rau nws qhov kev xaiv tsim nyog rau cov cuab yeej cuab tam thiab rov qab ua haujlwm.
Rwb thaiv tsev sab nrauv thiab cov tshuab sau tiav (EIFS):
HPMC yog ib feem tseem ceeb ntawm Eifs daim ntawv thov, pab txhawm rau txhim kho adhesion, hloov tau thiab tawg tsis kam. Nws cov dej-khaws cov khoom muaj tshwj xeeb tshaj yog muaj txiaj ntsig hauv cov kab mob stucco.
Hauv kev xaus:
HydroxyPropylencellulose yog ib qho zoo tshaj plaws additive hauv GyFaceted kev sib koom ua ke rau kev tswj kav dej, kev tswj hwm lub sijhawm, kev tswj hwm lub sijhawm, adchesion thiab tawg tawm. Txawm hais tias siv hauv plaster, xis mas, txiv qaub lossis sab nrauv phab ntsa rwb thaiv tsev hauv kev txhim kho qhov kev ua tau zoo tag nrho thiab kev ua tau zoo ntawm plaster. Raws li kev tsim kho cov kev tsim kho txuas ntxiv zuj zus, HPMC cov versatility thiab kev ntseeg tau tau ua nws ib qho kev sib xyaw ua ke ntawm cov kev ua haujlwm ntev thiab ua tiav ntawm ntau yam kev tsim kho cov phiaj xwm.
Lub Sijhawm Post: Nov-28-2023