Hydroxypropylmethylcellulose (HPMC) yog ib qho cellulose derivative dav siv los ua cov ntawv khi thiab cov thickener hauv ntau yam xws li kev tsim kho, tshuaj thiab khoom noj.HPMC yog cov dej-soluble polymer uas tuaj yeem muab cov txiaj ntsig zoo li cov nplaum nplaum hauv kev lag luam pobzeb.Hauv kab lus no, peb tham txog lub luag haujlwm ntawm hydroxypropylmethylcellulose (HPMC) hauv cov nplaum nplaum.
qhia
Pobzeb nplaum yog cov ntaub ntawv polymer-raws li siv los khi cov vuas rau cov substrates sib txawv xws li cov cement mortar, qhob, plasterboard thiab lwm qhov chaw.Cov pobzeb nplaum tuaj yeem muab faib ua cov nplaum organic thiab cov nplaum inorganic.Organic pobzeb adhesives feem ntau yog ua raws li cov khoom siv hluavtaws xws li epoxy, yas lossis acrylic, thaum cov nplaum tsis muaj kab mob yog raws li cov cement lossis cov ntxhia.
HPMC yog dav siv los ua ib qho ntxiv hauv cov nplais pobzeb vim nws cov khoom tshwj xeeb xws li dej tuav, thickener, thiab rheological zog.Cov khoom no yog ib qho tseem ceeb los xyuas kom meej tias cov nplais nplaum nplaum zoo sib xyaw, txhawb kev ua haujlwm zoo thiab txo lub sijhawm ziab.HPMC kuj tseem pab ua kom lub zog ntawm cov pobzeb nplaum, ua kom nws ruaj khov dua.
tuav dej
Kev tuav dej yog ib qho cuab yeej tseem ceeb kom ntseeg tau tias cov nplais nplaum tsis qhuav sai heev.HPMC yog cov dej tuav zoo heev, nws tuaj yeem khaws tau txog li 80% ntawm nws qhov hnyav hauv dej.Cov cuab yeej no ua kom ntseeg tau tias cov nplaum nplaum tseem siv tau rau lub sijhawm ntev, muab cov pobzeb kho kom ntau lub sijhawm los nteg cov pobzeb, txawm tias nyob rau ib hnub.Tsis tas li ntawd, HPMC txhim kho cov txheej txheem kho, ua kom muaj kev sib raug zoo thiab txhim kho cov kav ntev.
tuab
Lub viscosity ntawm cov nplais nplaum yog ncaj qha ntsig txog cov tuab ntawm cov sib tov, cuam tshuam rau kev yooj yim ntawm daim ntawv thov thiab daim ntawv cog lus lub zog.HPMC yog cov thickener muaj txiaj ntsig zoo uas tuaj yeem ua tiav cov viscosities siab txawm tias tsis tshua muaj siab.Yog li, cov pobzeb nplaum tsim tuaj yeem siv HPMC los tsim cov nplais nplaum nrog qhov sib xws uas haum rau txhua qhov kev thov tshwj xeeb.
Rheological zog
Cov khoom rheological ntawm HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov nplais nplaum.Viscosity hloov nrog qib ntawm kev siv shear stress, ib yam khoom hu ua shear thinning.Shear thinning txhim kho cov yam ntxwv ntws ntawm cov nplais nplaum, ua kom yooj yim rau kev sib kis ntawm phab ntsa thiab cov plag tsev nrog kev siv zog me ntsis.Tsis tas li ntawd, HPMC muab kev faib tawm ntawm cov khoom sib tov, tsis txhob sib cais thiab tsis sib xws.
Txhim kho daim ntawv cog lus zog
Qhov kev ua tau zoo ntawm cov pobzeb nplaum yog nyob ntawm qhov sib zog ntawm daim ntawv cog lus: cov nplaum yuav tsum muaj zog txaus kom cov pobzeb ruaj khov rau saum npoo thiab tiv taus kev ntxhov siab uas tuaj yeem ua rau cov pobzeb tawg lossis hloov.HPMC pab txhawb rau cov cuab yeej no los ntawm kev txhim kho qhov zoo ntawm cov nplaum thiab txhim kho nws cov adhesion.HPMC resins tsim cov pobzeb ua haujlwm siab nrog cov qib siab ntawm cov ntawv cog lus muaj zog thiab ua kom muaj zog ntxiv.Kev siv HPMC pab tiv thaiv cov pob zeb los yog pobzeb tawg thiab ua kom cov pobzeb kom zoo rau lub sijhawm ntev dua.
nyob rau hauv xaus
Hauv kev xaus, HPMC txhim kho cov pobzeb cov nplaum nplaum los ntawm kev muab ntau yam zoo, nrog rau kev tuav dej, thickening, rheological zog thiab txhim kho daim ntawv cog lus.HPMC lub peev xwm los txhim kho kev ua haujlwm, txo lub sijhawm ziab thiab tiv thaiv cov nplais tawg tau ua rau nws yog ib feem tseem ceeb ntawm kev lag luam pobzeb.Kev siv HPMC hauv kev tsim cov nplais nplaum tuaj yeem txhim kho cov khoom lag luam zoo thaum muab cov kev sib txuas ruaj khov, muaj zog sib txuas uas ua haujlwm tau zoo raws li qhov zoo nkauj.Tag nrho cov txiaj ntsig no ua pov thawj tias HPMC yog qhov kev ua si hloov pauv polymer hauv kev lag luam pob zeb nplaum nplaum.
Post lub sij hawm: Jun-21-2023