Raws li kev tsim kho kev lag luam loj hlob tuaj, qhov kev xav tau ntawm cov khoom siv ruaj khov tau dhau los ua qhov tseem ceeb. Ib yam khoom uas ua rau nthwv dej hauv kev lag luam yog kev tsim kho-qib hydroxypropyl methylcellulose (HPMC). HPMC yog ib qho cellulose ether nrog ntau yam kev siv hauv ntau yam lag luam suav nrog zaub mov, tshuaj thiab kev tsim kho. Txawm li cas los xij, vim nws qhov txiaj ntsig ntau, kev tsim kho-qib HPMC tau nce siv hauv kev tsim kho kev lag luam.
Architectural qib HPMC nthuav tawm kev ruaj ntseg zoo ntawm cov khoom, ua rau nws yog ib qho khoom siv zoo tagnrho. Nws yog siv ntau hauv kev lag luam vim nws tsis muaj tshuaj lom, biodegradability, thiab compatibility nrog lwm cov ntaub ntawv. HPMC muaj cov khoom tuav dej zoo, ua rau nws zoo tagnrho rau cov ntaub ntawv tsim kho kom muaj dej noo. Thaum siv hauv mortar, HPMC txhim kho cov khoom nplaum, muab cov nplaum nplaum zoo dua. Tsis tas li ntawd, HPMC tsis tsim cov tshuaj tiv thaiv tsis zoo, yog li nws tuaj yeem siv tau zoo nyob rau hauv ib puag ncig rhiab heev. Kab lus no muab kev sib tham tob txog qhov HPMC qib architectural li cas tuaj yeem tsav kev tsim kho tshiab thiab kev ruaj khov hauv kev tsim kho.
HPMC muaj ntau yam thiab muaj ntau yam txiaj ntsig uas ua rau nws zoo tagnrho rau ntau daim ntawv thov kev tsim kho. Cov txiaj ntsig zoo no suav nrog kev ruaj ntseg, kev ua tau zoo, kev sib koom ua ke, thiab kev tiv thaiv kom shrinkage thiab tawg. Vim nws cov khoom sib khi thiab thickening, nws feem ntau siv rau hauv cov khoom sib xyaw qhuav xws li cov nplais nplaum, cement thiab grout. Thaum siv hauv cov nplais nplaum, HPMC txhim kho kev ua haujlwm, txo cov dej noo, thiab zoo dua cov ntaub ntawv sib txawv. Qhov no txhim kho adhesion tiv thaiv cov pobzeb slippage, tswj cov pobzeb qauv, thiab muab kev ua tiav.
Lwm thaj chaw ntawm lub zog rau kev tsim kho-qib HPMC yog kev tsim cov cement thiab grout. HPMC tuaj yeem txhim kho fluidity, cohesion thiab workability ntawm cement. Ntxiv rau cov cement sib tov pab tiv thaiv kev tawg thiab shrinkage, thiab nws kuj ua rau cov tshuaj tiv thaiv ntawm cov cement. Yog li ntawd, cov cement uas muaj HPMC yog tsim rau ntau yam kev tsim kho, nrog rau cov haujlwm loj thiab me.
Lub hydrophilic xwm ntawm HPMC ua rau nws yog ib yam khoom zoo heev rau mortars siv nyob rau hauv ntub tej yam kev mob vim nws txhim khu kev qha dej tuav, uas txhim khu kev ua hauj lwm thiab txhim kho sag kuj. Tsis tas li ntawd, HPMC feem ntau yog siv rau hauv sealants vim nws cov khoom nplaum zoo heev.
Hauv cov ntawv thov kev tsim vaj tsev sab hauv, HPMC muaj ntau qhov zoo. Nws pab txo cov cua infiltration, ya raws thiab suab nrov, ua rau nws zoo tagnrho raws li cov phab ntsa ntub dej. HPMC kuj tseem siv rau hauv cov xim thiab coatings ua cov thickener, binder thiab pigment dispersant, tag nrho cov uas txhim kho cov khoom ntawm cov xim thiab coatings. Qhov tshwm sim yog txheej txheej uas ruaj khov thiab muaj qhov zoo dua ntawm cov phab ntsa thiab qab nthab.
Cov txiaj ntsig ntawm architectural-qib HPMC mus dhau architectural functionality. HPMC yog cov khoom siv huv, ib puag ncig tus phooj ywg uas yog biodegradable tag nrho. Tsis tas li ntawd, vim nws tsis muaj tshuaj lom, nws muaj kev cuam tshuam me me rau ib puag ncig. HPMC tsis tso tawm cov khoom siv phom sij xws li cov hlau hnyav, halogens lossis plasticizers tom qab ua tiav, ua rau nws cov khoom siv ruaj khov thiab zoo ib puag ncig. Kev nce ntawm cov khoom siv hauv tsev ruaj khov ua rau muaj kev hloov pauv loj hauv kev tsim kho kev lag luam, raws li cov kws tsim vaj tsev, cov tsim vaj tsev thiab cov neeg tsim vaj tsev paub ntau ntxiv txog qhov cuam tshuam lawv lub tsev yuav muaj rau ib puag ncig.
Tsis tas li ntawd, kev siv HPMC nce kev tsim khoom, txhim kho kev ua haujlwm thiab txuag nqi. HPMC tso cai rau kev siv dej hauv cov khoom siv hauv tsev, txo kev siv cov cement thiab grout tag nrho. Tsis tas li ntawd, kev siv HPMC hauv cov khoom siv cementitious ua rau cov khoom zoo dua thiab ruaj khov dua. Li no, HPMC tau txais kev pom zoo los ntawm kev tsim kho kev lag luam xws li cov neeg cog lus, cov neeg tsim khoom, cov kws tsim vaj tsev thiab cov kws tsim qauv.
Lwm qhov tshwj xeeb ntawm architectural qib HPMC yog nws kev sib raug zoo nrog lwm cov ntaub ntawv. HPMC tuaj yeem sib xyaw nrog ntau yam khoom siv hauv tsev xws li cement, grout thiab pob zeb yam tsis hloov nws cov txiaj ntsig. Nws kuj tuaj yeem siv nrog lwm cov tshuaj ntxiv xws li superplasticizers, air-entraining agents thiab pozzolans. Qhov no ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim cov khoom lag luam uas xav tau ntau yam sib txawv additives.
Vim tias HPMC yog cov khoom siv ntau yam, nws tuaj yeem tsim kho kom tau raws li kev tsim kho tshwj xeeb. Piv txwv li, lub polymer saw ntev ntawm HPMC txiav txim siab nws viscosity, uas cuam tshuam rau cov txheej txheem ntawm cov khoom. Cov saw ntev ntev ua rau muaj viscosity ntau dua, uas txhim kho kev tswj cov dej ntws, tab sis kuj tuaj yeem cuam tshuam rau lub zog ntawm cov khoom. Yog li ntawd, cov saw ntev ntawm HPMC siv rau hauv kev tsim kho yuav tsum tau ua kom zoo los xyuas kom meej qhov kawg tshwm sim yam tsis muaj kev txi lub zog.
Nyob rau hauv cov ntsiab lus, kev tsim kho qib HPMC yog ib puag ncig tus phooj ywg thiab ntau yam khoom siv uas tuaj yeem siv rau hauv ntau yam kev tsim kho. Nws non-toxicity, biodegradability, thiab compatibility nrog rau lwm yam ntaub ntawv ua rau nws zoo tagnrho rau ob qho tib si me thiab loj tej yaam num. Tsis tas li ntawd, HPMC muab kev sib koom ua ke zoo dua, txhim kho kev ua haujlwm, thiab kev txuag nqi tag nrho. Raws li kev tsim kho kev lag luam tau cog lus rau kev coj ua kom ruaj khov, HPMC yog qhov kev xaiv zoo heev los pab ua qhov no. Nws cov txiaj ntsig ntau yam tau ua rau nws nrov hauv kev tsim kho kev lag luam thiab yuav ua rau muaj kev cuam tshuam tseem ceeb, ua rau muaj kev loj hlob zoo ntawm kev tsim kho kev lag luam.
Post lub sij hawm: Sep-06-2023