Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv dav siv hauv kev tsim kho kev lag luam vim nws cov dej tuav tau zoo heev. Hauv kev tsim kho xws li cement plasters, plasters thiab pobzeb adhesives, dej tuav yog qhov tseem ceeb rau kev ua tau zoo thiab kev ua haujlwm zoo.
Raws li ib qho ntawm cov khoom tseem ceeb tshaj plaws ntawm HPMC, kev tuav dej yog ncaj qha ntsig txog cov viscosity ntawm cov khoom. Qhov siab dua qhov viscosity ntawm HPMC, nws cov dej tuav tau zoo dua. Cov cuab yeej no ua rau HPMC xaiv cov khoom siv zoo rau cov kws tshaj lij kev tsim vaj tsev thiab kev tsim kho.
Kev tuav dej yog qhov tseem ceeb hauv kev tsim kho vim nws xyuas kom meej tias cov khoom siv khaws cia lawv qhov sib xws txawm tias qhuav. Piv txwv li, hauv cov cement renders lossis plasters, dej tuav tiv thaiv cov khoom los ntawm kev tawg, cuam tshuam cov qauv kev ncaj ncees. Ib yam li ntawd, hauv kev kho cov pobzeb, dej tuav yuav pab xyuas kom meej tias cov nplais nplaum tuav ruaj khov rau hauv substrate. Tag nrho cov ntawv thov no vam khom HPMC los muab kev tuav dej kom zoo rau kev ua haujlwm zoo.
Thaum HPMC siv los ua cov khoom siv hauv tsev, nws pab tswj cov dej noo thiab lav tias tsis muaj dej poob los ntawm kev ziab ntxov ntxov. Qhov no yog ib qho tseem ceeb rau stucco los yog rendering daim ntaub ntawv, vim hais tias cov ntaub ntawv uas dries sai heev yuav tawg thiab tej zaum yuav ua rau cov yam ntxwv puas. HPMC lub peev xwm los txhim kho cov dej tuav tau pab tswj cov dej noo zoo ib yam thoob plaws hauv daim ntawv thov, cia cov khoom kom qhuav sib npaug yam tsis ua rau muaj kev puas tsuaj.
Lub siab viscosity ntawm HPMC ua rau muaj cov tshuaj tuab dua, uas pab txhim kho nws cov dej khaws cia. Qhov sib xws ntawm HPMC xyuas kom meej tias cov khoom tseem nyob ntawm qhov chaw rau lub sijhawm ntau, yog li tswj nws cov dej noo. Tsis tas li ntawd, cov tuab tuab ua rau qeeb evaporation, kom ntseeg tau tias cov khoom dries maj mam thiab tsis tu ncua rau qhov ua tiav zoo.
Ntxiv nrog rau nws cov khoom tuav dej zoo heev, HPMC lub siab viscosity kuj tseem ua rau nws cov nqi ntws, daim ntawv cog lus lub zog thiab kev ua haujlwm. High viscosity HPMC muab cov nqi ntws zoo dua, ua kom yooj yim dua rau kev sib kis thiab tuav ntawm qhov chaw kho. High-viscosity HPMC kuj tseem muaj cov nplaum nplaum zoo dua, ua rau nws ruaj khov rau hauv cov substrate thiab txhim kho tag nrho cov khoom siv.
Thaum siv hauv cov ntawv thov pobzeb, HPMC txhim kho kev ua haujlwm ntawm cov nplais nplaum, ua rau lawv tiv taus ntau dua thiab tsis tshua muaj kev tawg. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas yuav tsum muaj kev txav mus los, xws li txuas hniav, txoj kev loj, thiab lwm yam kev tsim kho pej xeem.
HPMC yog ib qho khoom siv tseem ceeb hauv kev tsim kho kev lag luam vim nws cov dej tuav tau zoo heev uas ua rau muaj kev ua tiav zoo dua. Lub siab viscosity ntawm HPMC txhim kho nws cov dej tuav cov khoom, tus nqi ntws, daim ntawv cog lus lub zog thiab kev ua haujlwm, ua rau nws zoo tagnrho rau ntau yam kev siv hauv kev tsim kho, suav nrog cov cement renders, plasters thiab pobzeb adhesives. Nws qhov kev ua tau zoo tshaj plaws hauv kev siv vaj tse ua kom ntseeg tau tias cov tsev thiab cov qauv yuav sawv qhov kev sim ntawm lub sijhawm, txhim kho kev nyab xeeb, kev ua haujlwm thiab ua haujlwm ntev ntawm qhov chaw tsim.
Post lub sij hawm: Sep-05-2023