Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv tseem ceeb hauv ntau cov ntaub ntawv tsim kho, suav nrog mortars, plasters thiab plasters. HPMC yog ib qho cellulose-raws li polymer muab los ntawm cov nroj tsuag fibers thiab muaj cov dej tuav zoo heev. Thaum ntxiv rau cov khoom siv cement-based, nws muaj ntau yam zoo, nrog rau kev txhim kho kev ua haujlwm, dej tuav thiab adhesion. Kab lus no yuav tshawb txog qhov cuam tshuam zoo ntawm HPMC ntawm cov khoom siv cement-based thiab yuav ua li cas nws tuaj yeem txhim kho qhov zoo ntawm mortar.
Txhim kho kev ua haujlwm
Ib qho txiaj ntsig tseem ceeb ntawm HPMC hauv cov khoom siv cement-based yog nws cov txiaj ntsig ntawm kev ua haujlwm. Kev ua haujlwm yog ib qho tseem ceeb ntawm mortar vim tias nws cuam tshuam qhov yooj yim uas cov mortar tuaj yeem siv tau thiab ua haujlwm rau hauv qhov xav tau. HPMC txhim kho kev ua haujlwm ntawm cov tshuaj khib nyiab los ntawm kev ua kom nws cov viscosity, yog li tiv thaiv kev sib cais thiab ua kom muaj qhov sib xws ntawm mortar. Cov yam ntxwv no ua rau HPMC muaj txiaj ntsig tshwj xeeb thaum ua haujlwm nrog cov duab nyuaj lossis cov qauv tsim uas xav tau daim ntawv thov raug.
Kev tuav dej
Kev tuav dej yog lwm yam khoom tseem ceeb ntawm cov khoom siv cement-based, tshwj xeeb tshaj yog cov mortars. Kev tuav dej siab ua kom cov mortar hydrated thiab tiv thaiv kom tsis txhob ziab sai heev, uas tuaj yeem ua rau tawg thiab tsis muaj zog. HPMC muaj cov khoom tuav dej zoo heev thiab, thaum ntxiv rau hauv mortar, ua kom nws ntub txawm nyob rau hauv qhuav qhuav. Cov cuab yeej no tseem ceeb tshwj xeeb hauv kev siv sab nraum zoov, qhov chaw raug tshav ntuj thiab cua tuaj yeem ua rau cov mortar qhuav sai. HPMC ua kom cov dej tuav ntawm cov tshuaj khib nyiab los ntawm kev nqus thiab khaws cov dej noo, yog li ua kom cov txheej txheem hydration.
Txhim kho adhesion
Adhesion yog lwm yam khoom tseem ceeb ntawm cov khoom siv cement-based, tshwj xeeb tshaj yog mortars. Adhesion yog hais txog lub peev xwm ntawm lub mortar los lo rau ntawm qhov chaw muab thiab tuav nws daim ntawv cog lus thaum lub sijhawm. HPMC txhim kho qhov adhesion ntawm mortar los ntawm kev ua raws li kev sib koom ua ke, yog li pab cov mortar adhere zoo dua rau saum npoo. Qhov no tshwj xeeb tshaj yog muaj txiaj ntsig zoo thaum cov ntaub ntawv sib txawv yuav tsum tau sib koom ua ke lossis thaum qhov chaw tsis sib xws (xws li thaum ua haujlwm nrog cib lossis pob zeb).
Txhim kho durability
Durability yog cov cuab yeej tseem ceeb tshaj plaws ntawm cov khoom siv cement-based, thiab HPMC plays lub luag haujlwm tseem ceeb hauv kev txhim kho cov kav ntev. HPMC txhim kho kev ua haujlwm ntev ntawm cov khoom siv cement-based los ntawm kev muab kev tiv thaiv rau huab cua, dej, plua plav thiab lwm yam khoom paug. Lub barrier tiv thaiv cov khoom hauv qab los ntawm cov teeb meem ib puag ncig, txo qhov kev pheej hmoo ntawm corrosion thiab lwj. Lub barrier kuj txhim kho cov khoom muaj peev xwm los tiv thaiv cov teebmeem ntawm huab cua, khov thiab thawing, thiab hluav taws xob ultraviolet.
Txhim kho yooj
Flexibility yog lwm yam khoom tseem ceeb ntawm cov khoom siv cement-based uas HPMC tuaj yeem pab txhim kho. Flexibility yog hais txog cov khoom muaj peev xwm hloov tau mus rau qhov hloov pauv ntawm qhov kub thiab txias, uas tuaj yeem ua rau nthuav lossis contraction. HPMC nce qhov hloov pauv ntawm cov mortar los ntawm kev tsim cov yeeb yaj kiab hloov pauv ntawm cov khoom siv, tso cai rau nws txav mus yam tsis muaj kev tawg. Qhov no feature yog tshwj xeeb tshaj yog ib qho tseem ceeb nyob rau hauv cov cheeb tsam uas nthuav los yog kev cog lus cov pob qij txha tuaj yeem ua rau cov khoom tawg.
nyob rau hauv xaus
HPMC ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov khoom siv cement-based, tshwj xeeb tshaj yog mortar. Nws txhim kho constructability, dej tuav, adhesion, saj zawg zog thiab durability, ua rau nws ib tug indispensable tivthaiv ntawm niaj hnub architecture. Tsis tas li ntawd, kev siv HPMC hauv kev tsim kho cov ntaub ntawv txhawb nqa kev tsim kho kom ruaj khov vim nws txhim kho kev ua haujlwm ntawm cov khoom siv thiab txo qhov kev pheej hmoo ntawm kev cuam tshuam ib puag ncig. Yog li ntawd, kev tsim kho kev lag luam yuav tsum txuas ntxiv mus siv lub peev xwm ntawm HPMC hauv kev txhim kho cov khoom siv cement-based zoo.
Post lub sij hawm: Sep-25-2023