Lilemong tsa morao tjena, liphahlo tse entsoeng ka metsi li se li tumme haholo ka lebaka la tšireletso ea tsona ea tikoloho, chefo e tlaase le kaho e bonolo. Ho ntlafatsa ts'ebetso le litšoaneleho tsa liphahlo tsena, li-additives tse fapaneng li sebelisoa, e 'ngoe ea li-additives tsa bohlokoa ke hydroxypropyl methylcellulose (HPMC). Ether ena ea cellulose e bapala karolo ea bohlokoa ho ntlafatseng viscosity, botsitso, ho khomarela le boleng ba kakaretso ba liphahlo tse thehiloeng metsing.
Ithute ka HPMC
Hydroxypropylmethylcellulose, eo hangata e tsejoang e le HPMC, ke polymer e sebetsang ka mefuta-futa e tsoang ho cellulose, ntho ea tlhaho e fumanehang maboteng a lisele tsa semela. Ka letoto la liphetoho tsa lik'hemik'hale, selulose e fetoloa HPMC, e etsa polima e qhibilihang ka metsi e nang le mefuta e mengata ea lisebelisoa. HPMC e khetholloa ka motsoako oa eona o ikhethang oa lihlopha tsa hydrophobic methyl le hydrophilic hydroxypropyl, tse e lumellang ho fetola thepa ea rheological ea litsamaiso tsa metsi.
Ts'ebetso ea HPMC ka litlolo tse thehiloeng metsing
Taolo ea viscosity:
HPMC e tsebahala haholo ka bokhoni ba eona ba ho laola li-viscosity tsa liphahlo tse thehiloeng metsing. Ka ho lokisa mahloriso a HPMC, bahlahisi ba ka fihlela botenya kapa botenya bo lakatsehang, bo bakang ts'ebeliso e ntle le tšireletso.
Ho tsitsa le ho hanyetsa ho fokola:
Keketso ea HPMC e matlafatsa botsitso ba mokhoa oa ho roala o thehiloeng metsing le ho thibela ho theoha kapa ho rotha nakong ea kaho. Sena se bohlokoa haholo libakeng tse otlolohileng moo ho boloka lesela le lekanang ho leng thata.
Ntlafatsa ho khomarela:
HPMC thusa ho ntlafatsa barbotage e khomarela ho mefuta e fapaneng ya substrates bakeng sa nako e telele, tšoarellang qetellong. Sena ke sa bohlokoa ka ho khetheha bakeng sa lipente tsa ka ntle tse pepesehileng maemo a leholimo a fapaneng.
Ho boloka metsi:
HPMC e tsebahala ka thepa ea eona ea ho boloka metsi, e leng molemo ho thibela ho omisoa ha pente pele ho nako nakong ea kopo. Sena se etsa bonnete ba hore qetello e tsitsitseng le e tsitsitseng.
Thixotropy:
Sebopeho sa thixotropic sa HPMC se lumella pente hore e sebelisoe habonolo ka boiteko bo fokolang ha e ntse e boloka botsitso bo tsitsitseng ha e sa sisinyehe. Karolo ena e bohlokoa haholo ho fokotsa spatter nakong ea ts'ebeliso.
Ts'ebeliso ea HPMC ka har'a litlolo tse thehiloeng metsing
Liaparo tsa ka hare le tsa ka ntle:
HPMC e sebelisoa haholo ka har'a liphahlo tse thehiloeng metsing le ka ntle ho ntlafatsa ts'ebetso ea tsona ka kakaretso. E thusa ho fihlela boreleli, esita le qetellong ha e ntse e fana ka tšireletso khahlanong le maemo a tikoloho.
Pente ea sebopeho:
Liaparo tse entsoeng ka mongolo, tse atisang ho sebelisoa bakeng sa merero ea ho khabisa, li rua molemo ho tsoa taolong ea rheology e fanoeng ke HPMC. E thusa ho boloka sebopeho se lakatsehang le ponahalo ea ho roala.
Primer le Sealer:
Ho li-primers le li-sealants, moo ho koaheloa ha li-adhesion le substrate ho leng bohlokoa, HPMC e thusa ho ntlafatsa ho khomarela le ho etsa lifilimi, ho fella ka ts'ebetso e ntle ka kakaretso.
Liaparo tsa masonry le stucco:
HPMC e ka sebelisoa ho lira tsa masonry le stucco, ho fana ka viscosity e hlokahalang le thepa ea anti-sag e hlokoang ke liphahlo tsena tse khethehileng.
Liaparo tsa lehong:
Liaparo tsa lehong tse nang le metsi li rua molemo ho bokhoni ba HPMC ba ho ntlafatsa ho khomarela le ho thibela ho theoha, ho netefatsa qetello e tsitsitseng le e tšoarellang holim'a lehong.
Melemo ea ho sebelisa HPMC ka lirafshoa tse thehiloeng metsing
E na le tikoloho:
HPMC e nkiloe mehloling e ka nchafatsoang hape e kenya letsoho mefuteng ea tikoloho ea liphahlo tse thehiloeng metsing. Biodegradability ea eona e eketsa ts'ebetso ea litlolo tsa ho roala.
Matla a ntlafetseng:
Taolo ea rheology e fanoeng ke HPMC e etsa hore ho be bonolo ho sebelisa liphahlo tse thehiloeng metsing, ebang ke ka borashe, rolara kapa sefafatsi, ho khothaletsa tšireletso e ntle le ts'ebeliso.
Matlafatso ea nako e telele:
HPMC e ntlafatsa ho khomarela le botsitso, e thusa ho eketsa nako e telele le bophelo bo bolelele ba lipente tse thehiloeng metsing, ho fokotsa tlhokahalo ea ho penta khafetsa.
Mefuta-futa:
HPMC ke tlatsetso e fapaneng e ka sebelisoang mefuteng e fapaneng ea likhoele tse thehiloeng metsing ho amohela mefuta e fapaneng ea li-substrates le mekhoa ea ts'ebeliso.
Ts'ebetso ea theko e phahameng:
Mehaho e sebetsang ea HPMC ea ho tiea le ho tsitsisa e thusa ho fokotsa palo ea li-pigments le lisebelisoa tse ling tse turang tse hlokahalang mekhoeng ea ho roala, e bakang phokotso ea litšenyehelo.
ha re phethela
Hydroxypropylmethylcellulose (HPMC) ke tlatsetso ea bohlokoa e nang le mesebetsi e mengata ka har'a litlolo tse thehiloeng metsing. Mehaho ea eona e ikhethang, ho kenyelletsa taolo ea viscosity, botsitso bo ntlafetseng, ho ntlafala ho khomarela le thepa e ntle ea tikoloho, e etsa hore e be motsoako oa bohlokoa bakeng sa bahlahisi ba liphahlo ba ikemiselitseng ho hlahisa lihlahisoa tsa boleng bo phahameng, tse se nang tikoloho. Ha tlhoko ea lihlahisoa tse tšoarellang le tse bonolo tsa basebelisi e ntse e hola ka 'maraka oa liphahlo, HPMC e ntse e le karolo ea bohlokoa ho thehoeng ha liphahlo tse nang le metsi tse fihlelang ts'ebetso le maemo a tikoloho.
Nako ea poso: Dec-18-2023