Likhomaretsi tsa Hydroxypropyl methylcellulose (HPMC) li fetohile karolo ea bohlokoa mesebetsing ea sejoale-joale ea kaho ka lebaka la thepa ea tsona e ntle haholo le lits'ebetso tse fapaneng. HPMC e tsoa ho selulose 'me e na le thepa e babatsehang ea sekhomaretsi hammoho le ho teteaneng, ho boloka metsi le mesebetsi ea ho etsa filimi. Lefapheng la kaho, likhomaretsi tsa HPMC li sebelisoa mefuteng e mengata e fapaneng ea likopo, ho tloha ho likhomaretsi tsa lithaele, seretse, le li-plaster ho isa ho metsoako ea ho ikemela.
1. Tšebeliso ea sekhomaretsi sa HPMC kahong:
1.1 Sekhomaretsi sa lithaele:
Sekhomaretsi sa HPMC ke motsoako oa bohlokoa ho liforomo tsa sekhomaretsi sa lithaele, tse netefatsang maqhama a matla lipakeng tsa thaele le substrate.
Li ntlafatsa ts'ebetso ea sekhomaretsi sa lithaele bakeng sa ts'ebeliso e bonolo le phetoho nakong ea ho kenya.
Li-binders tsa HPMC li thusa ho ntlafatsa ho bolokoa ha metsi, ho thibela ho omisoa pele ho nako le ho etsa bonnete ba hore lisebelisoa tsa cementitious li tsamaisa metsi hantle.
1.2 Lithako:
Ka lirekere, li-binders tsa HPMC li sebetsa e le li-thickeners tse sebetsang hantle le li-rheology modifiers, li ntlafatsa ho tsitsisa le ho sebetsa ha metsoako ea seretse.
Ba ntlafatsa ho khomarela seretse ho mefuta e fapaneng ea substrates, ho akarelletsa le konkreite, litene le lejoe, kahoo ba eketsa matla a tlamahano ka kakaretso le ho tšoarella ha mohaho.
Sekhomaretsi sa HPMC se thusa ho fokotsa ho putlama le ho honyela ha seretse, ho lumella ts'ebeliso le litšila tse nyane.
1.3 Polasetere:
Likhomaretsi tsa HPMC li bapala karolo ea bohlokoa meahong ea samente ka lebaka la thepa ea tsona e ntlehali ea kaho le maqhama.
Li thusa ts'ebetsong ea liphahlo tsa plaster ha li ntse li fokotsa ho phatloha le ho ntlafatsa boleng ba bokaholimo.
Li-binders tsa HPMC li thusa ho ntlafatsa ho bolokoa ha metsi a motsoako oa gypsum, ho khothaletsa pholiso e nepahetseng le ho thibela mefokolo e kang efflorescence.
1.4 Metsoako ea ho ikemela:
Metsoakong ea ho ikemela, li-binders tsa HPMC li sebetsa e le li-addifiers tse sebetsang tsa rheology, li fana ka phallo e hlokahalang le thepa e lekantsoeng ho motsoako.
Li thusa ho finyella sebaka se boreleli, se lekanang, se etsa hore se tšoanelehe bakeng sa lisebelisoa tsa fatše.
Likhomaretsi tsa HPMC li ntlafatsa momahano le ho khomarela metsoako ea ho ikemela, ho netefatsa tlamo e matla ho substrate.
2. Melemo ea sekhomaretsi sa HPMC kahong:
2.1 Ho feto-fetoha ha maemo:
Likhomaretsi tsa HPMC li fumaneha ka mekhoa e fapaneng 'me li ka etsoa ka mokhoa o ikhethileng ho fihlela litlhoko tse ikhethang tsa kopo.
Li ka kenngoa habonolo mefuteng e sa tšoaneng ea thepa ea mohaho ho fana ka thepa e lakatsehang ntle le ho senya ts'ebetso.
2.2 Ntlafatsa tšebetso:
Tšebeliso ea li-adhesives tsa HPMC e ntlafatsa ho sebetsa ha thepa ea mohaho, e leng ho lumellang hore ho be bonolo ho sebetsana le ho sebelisoa.
Li ntlafatsa ho ata le nako e bulehileng ea sekhomaretsi, e leng se lumellang hore ho be le ho kenngoa ka katleho ha lithaele, seretse le li-plaster.
2.3 Matlafatso ea nako e telele:
Likhomaretsi tsa HPMC li kenya letsoho ho tšoarella ha nako e telele ea thepa ea mohaho ka ho ntlafatsa ho khomarela, ho kopana le ho hanyetsa maemo a tikoloho.
Ba ka lelefatsa bophelo ba sebopeho ka ho fokotsa mathata a kang ho petsoha, ho honyela le delamination.
2.4 Ho tšoarella ha tikoloho:
Likhomaretsi tsa HPMC ke mefuta e meng e baballang tikoloho ho fapana le lisebelisoa tsa sekhomaretsi tsa setso hobane li nkiloe mehloling ea limela e nchafalitsoeng.
Ba kenya letsoho mekhoeng e tsitsitseng ea kaho ka ho fokotsa khase ea bona ea khabone le ho ntlafatsa katleho ea lisebelisoa.
2.5 Litebello le nts'etsopele ea kamoso:
Ka khatello e ntseng e hola ea mekhoa ea moaho e tsitsitseng, tlhokahalo ea lisebelisoa tse tlamang tikoloho joalo ka HPMC e lebelletsoe ho eketseha.
Mosebetsi o ntseng o tsoela pele oa lipatlisiso le nts'etsopele o ikemiselitse ho ntlafatsa ts'ebetso le ho lekana ha likhomaretsi tsa HPMC kahong.
Tsoelo-pele ea theknoloji ea tlhahiso le theknoloji ea tlatsetso e ka lebisa ho nts'etsopele ea lihlahisoa tse ncha tsa sekhomaretsi tsa HPMC tse nang le ts'ebetso e phahameng.
Likhomaretsi tsa Hydroxypropyl methylcellulose (HPMC) li phetha karolo ea bohlokoa mesebetsing ea morao-rao ea kaho, e fana ka litharollo tse fapaneng bakeng sa lisebelisoa tse fapaneng tse kang likhomaretsi tsa lithaele, seretse, lipolasetere le metsoako ea ho ikemela. Thepa ea bona e ikhethang e thusa ho ntlafatsa ts'ebetso, ho matlafatsa nako e telele le ho boloka tikoloho ea merero ea kaho. Ha indasteri ea kaho e ntse e tsoela pele ho fetoha, likhomaretsi tsa HPMC li tla tsoelapele ho ba karolo ea bohlokoa molemong oa ho fumana tharollo ea meaho e sebetsang hantle, e tšoarellang le e baballang tikoloho.
Nako ea poso: Feb-26-2024