Lilemong tsa morao tjena, liphahlo tse thehiloeng metsing li se li tumme haholo ka lebaka la tšireletso ea tsona tikolohong, chefo e tlase, le kaho e bonolo. Ho ntlafatsa ts'ebetso le litšobotsi tsa liphahlo tsena, ho sebelisoa liphahlo tse fapaneng, e 'ngoe ea liphahlo tsa bohlokoa ke hydroxypropyl methylcellulose (HPMC). Ether ena ea cellulose e bapala karolo ea bohlokoa ho ntlafatseng viscosity, botsitso, ho khomarela le boleng ka kakaretso ba liphahlo tse thehiloeng metsing.
Ithute ka HPMC
Hydroxypropylmethylcellulose, e tsejoang haholo e le HPMC, ke polymer e feto-fetohang e nkiloeng ho cellulose, ntho ea tlhaho e fumanoang maboteng a sele ea limela. Ka letoto la liphetoho tsa lik'hemik'hale, cellulose e fetoloa HPMC, e etsa polymer e qhibilihang ka metsing e nang le mefuta e mengata ea lits'ebetso. HPMC e khetholloa ka motsoako oa eona o ikhethang oa methyl e sa hlokeng metsi le lihlopha tsa hydroxypropyl tse phelang metsing, e e lumellang ho fetola litšobotsi tsa rheological tsa litsamaiso tsa metsi.
Tshebetso ea HPMC ho lipente tse thehiloeng metsing
Taolo ea ho teteana:
HPMC e tsebahala haholo ka bokgoni ba yona ba ho laola ho teteana ha dikoahelo tse thehilweng metsing. Ka ho fetola mahloriso a HPMC, bahlahisi ba ka fihlella botenya kapa bosesane bo lakatsehang ba koahelo, e leng se fellang ka tshebediso le ho kwahelwa hamonate.
Ho tsitseha le ho hanyetsa ho salla:
Ho eketsoa ha HPMC ho ntlafatsa botsitso ba foromo ea ho koahela e thehiloeng metsing 'me ho thibela ho thella kapa ho rotha ha metsi nakong ea kaho. Sena se bohlokoa haholo libakeng tse otlolohileng moo ho boloka ho koahela ho lekanang ho leng thata.
Ntlafatsa ho khomarela:
HPMC e thusa ho ntlafatsa ho khomarela ha pente ho mefuta e fapaneng ea substrates bakeng sa qetello e tšoarellang nako e telele. Sena se bohlokoa haholo bakeng sa pente ea kantle e pepesetsoang maemo a fapaneng a leholimo.
Ho boloka metsi:
HPMC e tsebahala ka thepa ea eona ea ho boloka metsi, e leng se thusang ho thibela ho oma pele ho nako ha pente nakong ea ho e sebelisa. Sena se netefatsa hore e ba le qetello e lekanang le e tsitsitseng.
Thixotropy:
Tlhaho ea thixotropic ea HPMC e lumella pente ho sebelisoa habonolo ka boiteko bo fokolang ha e ntse e boloka botsitso bo tsitsitseng ha e sa tsamaee. Tšobotsi ena e bohlokoa haholo bakeng sa ho fokotsa ho fafatsa ha e sebelisoa.
Tšebeliso ea HPMC ho lipente tse thehiloeng metsing
Liaparo tsa kahare le kantle:
HPMC e sebelisoa haholo ho penteng e entsoeng ka metsi ka tlung le kantle ho ntlafatsa ts'ebetso ea tsona ka kakaretso. E thusa ho fihlela qetello e boreleli, e lekanang ha ka nako e ts'oanang e fana ka tšireletso khahlanong le mabaka a tikoloho.
Pente ea sebopeho:
Liaparo tse nang le sebopeho, tse atisang ho sebelisoa bakeng sa merero ea mekhabiso, li rua molemo taolong ea rheology e fanoang ke HPMC. E thusa ho boloka sebopeho le ponahalo e lakatsehang ea seaparo.
Primer le Sealer:
Li-primer le li-sealant, moo ho khomarela le ho koahela substrate ho leng bohlokoa, HPMC e thusa ho ntlafatsa ho khomarela le ho thehoa ha filimi, e leng se fellang ka ts'ebetso e ntle ka kakaretso.
Liaparo tsa majoe le stucco:
HPMC e ka sebelisoa ho masonry le stucco coatings, e fana ka viscosity e hlokahalang le thepa ea ho thibela ho oa e hlokahalang ke coatings tsena tse khethehileng.
Liaparo tsa lehong:
Liaparo tsa lehong tse tsamaisoang ka metsi li rua molemo bokhoning ba HPMC ba ho ntlafatsa ho khomarela le ho thibela ho thella, ho netefatsa hore qetello e tsitsitse ebile e tšoarella holim'a lehong.
Melemo ea ho sebelisa HPMC ho pente e thehiloeng metsing
E sireletsa tikoloho:
HPMC e nkiloe mehloling e nchafatsoang 'me e kenya letsoho litšobotsing tse sireletsang tikoloho tsa lipeipi tse thehiloeng metsing. Ho bola ha eona ho eketsa botsitso ba lipeipi tse koahelang.
Mokhoa o ntlafetseng oa ho sebetsa:
Taolo ea rheology e fanoang ke HPMC e etsa hore ho be bonolo ho sebelisa lipekere tse thehiloeng metsing, ebang ke ka borashe, rolara kapa spray, e leng se khothalletsang ho koaheloa le ho sebelisoa hamolemo.
Ho tšoarella ho matla:
HPMC e ntlafatsa ho khomarela le botsitso, e thusa ho eketsa ho tšoarella le ho phela nako e telele ha lipente tse entsoeng ka metsi li fela, e fokotsa tlhoko ea ho penta bocha khafetsa.
Ho feto-fetoha ha maemo:
HPMC ke setlatsetso se feto-fetohang se ka sebelisoang mefuteng e fapaneng ea ho koahela metsi ho amohela mefuta e fapaneng ea li-substrate le mekhoa ea ts'ebeliso.
Tshebetso e theko e phahameng:
Matla a HPMC a ho tiisa le ho tiisa a ho tenya a thusa ho fokotsa palo ea mebala le lintho tse ling tse turang tse hlokahalang mefuteng ea ho koahela, e leng se fellang ka ho boloka litšenyehelo.
ha re phethela
Hydroxypropylmethylcellulose (HPMC) ke setlatsetso sa bohlokoa sa mesebetsi e mengata liphahlong tse thehiloeng metsing. Thepa ea eona e ikhethang, ho kenyeletsoa taolo ea viscosity, botsitso bo ntlafetseng, ho khomarela ho ntlafetseng le thepa e sireletsang tikoloho, e etsa hore e be motsoako oa bohlokoa bakeng sa bahlahisi ba liphahlo ba ikemiselitseng ho hlahisa lihlahisoa tsa boleng bo holimo, tse sireletsang tikoloho. Ha tlhoko ea lihlahisoa tse tsitsitseng le tse bonolo ho li sebelisa e ntse e hola 'marakeng oa liphahlo, HPMC e ntse e le sebapali sa bohlokoa ho theheng liphahlo tse tsamaisoang ke metsi tse fihlelang maemo a ts'ebetso le a tikoloho.
Nako ea poso: Tshitwe-18-2023