Cov neeg hais txog cellulose yog chav kawm ntawm cov roj molecular hnyav dej-soluble polymers muab tau los ntawm cellulose. Lawv tau siv dav hauv kev tsim kho kev tsim kho raws li kev ua tau zoo admixtures rau txoj kev caiasent thiab gypsum-based khoom. Ntawm lawv, hydroxypropyl methylcellose (HPMC) yog ib qho tseem ceeb tshaj plaws ntawm cellulose muaj kev pab cuam tshuam rau putty.
Raws li kev lag luam HPMC, peb yuav piav qhia rau koj lub luag haujlwm ntawm cellulose ether hauv putty. Peb cia siab tias cov ncej no muab qee qhov kev pom muaj txiaj ntsig rau cov neeg nyiam nyob hauv cov ncauj lus no.
1. Dej khaws cia
Ib qho ntawm cov haujlwm tseem ceeb ntawm cellulose ether rau putty yog dej khaws cia. Putty yog muab tshuaj txhuam zoo li cov khoom siv los sau cov khoob thiab cov kab nrib pleb xws li phab ntsa, ceilings thiab plag tsev. Dej yog ib qho khoom siv tseem ceeb hauv kev siv tawv tawv vim tias nws pab zom cov khoom xyaw thiab muab cov haujlwm ua haujlwm. Txawm li cas los xij, cov dej ntau dhau yuav ua rau lub putty kom qhuav thiab ntsws sai sai, ua rau tawg thiab ua tiav zoo.
Cellulose ether, tshwj xeeb tshaj yog HPMC, tshwj xeeb tshaj yog HPMC, tshwj xeeb yog cov qauv gel-xws li cov dej sib xyaw, uas tuaj yeem txhim kho cov dej khaws cia ntawm putty. Cov pab pawg hydrophilic ntawm HPMC tuaj yeem nqus cov roj molecules thiab tiv thaiv lawv los ntawm evaporating sai heev. Cov yeeb yaj kiab no tso cai rau lub sijhawm ua haujlwm ntev dua thiab muaj ntau puty puty.
2. Txhim Kho Kev Ua Haujlwm
Lwm txoj haujlwm tseem ceeb ntawm cellulose ether rau putty yog txhawm rau txhim kho nws txoj haujlwm. Kev ua haujlwm ua haujlwm yog hais txog qhov yooj yim uas lub putty yog thov thiab pwm kom tau txais qhov chaw du. Cellulose ether tuaj yeem txhim kho fluhility thiab kis tau ntawm txo cov kev sib txhuam ntawm cov khoom ntawm cov kab ke.
Qhov kev sib ntxiv ntawm cellulose muaj cov neeg hais kom ua rau cov zaub mov tseem txo qhov cua nkag los ntawm kev sib xyaw, uas tuaj yeem ua rau qhov chaw tsis sib xws thiab cov khoom tsis zoo. Kev siv cov cellulose muaj cov neeg muaj kev pab txhim kho txhim kho qhov zoo thiab muaj txiaj ntsig ntawm cov putty, ua rau muaj kev ua tau zoo dua thiab muaj kev txaus nyiam dua.
3. Nce adhesion
Lwm qhov txiaj ntsig ntawm cellulose ether rau putty yog cov adhesion nce ntxiv. Putties yog siv los sau cov khoob thiab cov kab nrib pleb, zoo li los tsim cov xim du rau cov xim lossis lwm yam tag. Yog li ntawd, lub putty yuav tsum muaj peev xwm ua raws li cov substrate thiab muab cov nyiaj sib yeem.
Cellulose ether, tshwj xeeb tshaj yog HPMC, tshwj xeeb yog txhim kho cov nplaum ntawm kev sib sau ua ib zaj duab xis nyob rau saum npoo ntawm substrate. Cov yeeb yaj kiab txhim kho kev sib cuag ntawm cov putty thiab substrate thiab pab sau qhov chaw tsis xwm yeem. Qhov no ua rau muaj kev sib raug zoo thiab ua tiav ntau dua.
4. Txo cov shrinkage
Shrinkage yog ib qho teeb meem uas muaj ib qho muaj zaub mov, raws li nws tuaj yeem ua rau tawg thiab ua tiav zoo. Cellulose Cov neeg muaj cai tuaj yeem pab txo kom txo qis ua kom muaj kev txo qis los ntawm kev txhim kho cov dej ua kom huv thiab ua haujlwm ntawm lub putty. Dej evaporates maj mam maj mam ntxiv, muab putty daim ntawv thov smoother uas pab tiv thaiv kom tiv thaiv cov kab nrib pleb thiab kev sib sau thaum kev ziab.
Tsis tas li ntawd, cellulose ether tuaj yeem txo cov yas shrinkage ntawm lub putty, uas yog, lub shrinkage uas tshwm sim thaum lub sijhawm pib. Cov cuab yeej no yog qhov tseem ceeb tshwj xeeb rau kev nrawm nrawm, vim nws yuav pab tswj kev ncaj ncees ntawm cov npoo thiab tiv thaiv kev tsim cov kab nrib pleb.
5. Txhim kho qhov ruaj khov
Thaum kawg, cellulose muaj kev hais ua ke tuaj yeem txhim kho qhov tsis txaus ntseeg ntawm kev txhim kho nws txoj kev tiv thaiv kom sov thiab kev puas tsuaj av noo. Zaj duab xis-tsim cov khoom ntawm cellulose muaj peev xwm tuaj yeem muab cov teeb meem tiv thaiv ntawm cov nqaij tso tawm ntawm cov dej thiab lwm cov kuab paug.
Ntxiv mus, cellulose ether kuj tseem tuaj yeem txhim kho lub zog flexural thiab cuam tshuam ntawm cov putty, ua rau nws ntau tiv taus tawg thiab chipping. Cov cuab yeej no yog qhov tseem ceeb tshwj xeeb rau cov kev siv uas cov zaub mov uas muaj ntau zaus lossis cuam tshuam, xws li kev kho kom zoo nkauj lossis kho kom zoo nkauj.
Hauv kev xaus
Hauv kev xaus, cov cellulose neeg muaj kev pab hais tias, tshwj xeeb HPMC, yog ib qho tseem ceeb Putty ua tau zoo ua kom tiav ultIXTures. Lawv cov haujlwm suav nrog kev tuav dej, txhim kho cov txheej txheem ua tiav, nce adhesion, txo cov shrinkage thiab txhim kho durability. Siv cov neeg uas hais txog cellulose yuav pab txhim kho qhov zoo tag nrho thiab ua tau zoo ntawm cov zaub mov, ua rau muaj kev ua tiav zoo dua thiab lub neej ntev dua. Raws li kev lag luam HPMC, peb tau cog lus los muab cov neeg yuav khoom nrog cov cellulose zoo ether thiab kev pab txhawb.
Lub Sijhawm Post: Jul-20-2023