Hydroxypropyl methylcellulose (HPMC) ke thepa ea indasteri e feto-fetohang e sebelisoang haholo ho etsa litlolo tse entsoeng ka lebota la putty, haholo bakeng sa lits'ebetso tsa kahare le kantle.
Kenyelletso ea phofo ea HPMC:
Tlhaloso le sebopeho:
Hydroxypropyl methylcellulose, e bitsoang HPMC, ke selulose ether e fetotsoeng e nkiloeng ho selulose ea tlhaho. E entsoe ka cellulose e fetolang lik'hemik'hale, e leng lik'habohaedreite tse rarahaneng tse fumanehang maboteng a lisele tsa limela. Phetoho e kenyelletsa ho hlahisoa ha lihlopha tsa hydroxypropyl le methyl ka har'a sebopeho sa cellulose, e leng se bakang polima e qhibilihang ka metsing le e fapaneng haholo.
Lintho tsa 'mele le tsa lik'hemik'hale:
Solubility: HPMC e qhibiliha ka metsing, e etsa tharollo e hlakileng le e se nang mebala. Solubility e ka fetoloa ka ho fetola degree of substitution (DS) nakong ea ts'ebetso ea tlhahiso.
Viscosity: HPMC e fana ka viscosity e laoloang le e tsitsitseng ho tharollo. Thepa ena e bohlokoa mekhoeng ea li-putty tsa lebota kaha e ama ts'ebetso le litšobotsi tsa ts'ebeliso ea thepa.
Thermal gelation: HPMC e bonts'a gelation ea mocheso, e bolelang hore e ka etsa gel ha e futhumala. Thepa ena e bohlokoa lits'ebetsong tse itseng moo gelling e hlokahalang.
Tšebeliso ea HPMC ka putty ea lebota:
Interior wall putty:
1. Ho kopanya le ho khomarela:
HPMC e ntlafatsa thepa ea tlamahano ea li-putty tsa ka hare tsa lebota, e netefatsa hore e khomarela hantle ho li-substrates tse kang konkreite, stucco kapa drywall.
Sebopeho sa selulose se fetotsoeng sa HPMC se etsa filimi e tšesaane holimo, e fana ka tlamo e matla le e tšoarellang.
2. Ts'ebetso le boiketlo ba ts'ebeliso:
Viscosity e laoloang ea HPMC e fana ka putty e sebetsang hantle haholo, e e lumellang hore e sebelisoe hantle le habonolo libakeng tse ka hare.
E thibela ho sagging le ho rotha nakong ea kopo mme e netefatsa ho roala ho tšoanang.
3. Ho boloka metsi:
HPMC e sebetsa joalo ka ntho e bolokang metsi, e thibelang ho tsoa ka potlako ha metsi nakong ea mokhahlelo oa pheko. Sena se thusa ho ntlafatsa hydration ea putty, e leng se fellang ka nts'etsopele ea matla a betere.
putty ea kantle ea lebota:
1. Boemo ba leholimo:
HPMC e ntlafatsa khanyetso ea leholimo ea li-putty tsa lebota la kantle mme e sireletsa khahlanong le litlamorao tse mpe tsa khanya ea letsatsi, pula le liphetoho tsa mocheso.
Filimi ea polymer e entsoeng ke HPMC e sebetsa e le thibelo, e thibela ho kenella ha mongobo le ho boloka botšepehi ba ho roala.
2. Crack resistance:
Ho feto-fetoha ha maemo ha HPMC ho kenya letsoho ho khanyeng ho hanyetsa ha bokantle ba lebota la putty. E amohela motsamao oa substrate ntle le ho ama botšepehi ba ho roala.
Thepa ena e bohlokoa bakeng sa lits'ebetso tsa kantle tse pepesehileng khatello ea tikoloho.
3. Ho tšoarella:
HPMC e ntlafatsa ho tšoarella ka kakaretso ha putty ea kantle ka ho matlafatsa khanyetso ea eona ho abrasion, tšusumetso le ho pepesehela lik'hemik'hale.
Filimi e sireletsang e entsoeng ke HPMC e thusa ho lelefatsa bophelo ba ho roala le ho fokotsa tlhokahalo ea ho hlokomeloa khafetsa.
Melemo ea ho sebelisa HPMC ho putty leboteng:
1. Boleng bo tsitsitseng:
HPMC e etsa bonnete ba hore libopeho tsa lebota la putty ke tsa boleng bo ts'oanang 'me li fihlella maemo a hlokahalang a ts'ebetso.
2. Ntlafatsa ts'ebetso:
Viscosity e laoloang ea HPMC e fana ka ts'ebetso e betere, e etsa hore ts'ebetso ea kopo e sebetse hantle le e bonolo ho basebelisi.
3. Ntlafatsa ho khomarela:
Thepa ea sekhomaretsi ea HPMC e kenya letsoho ho khomarelang hantle, ho netefatsa hore putty e khomarela hantle mefuta e fapaneng ea li-substrates.
4. Ho feto-fetoha ha maemo:
HPMC e feto-fetoha le maemo 'me e ka sebelisoa mefuteng e fapaneng ea liqapi mme e ka etsoa ka mokhoa o ikhethileng ho fihlela litlhoko tse ikhethang tsa projeke.
ha re phethela:
Hydroxypropyl methylcellulose (HPMC) phofo ke motsoako oa bohlokoa ka hare le ka ntle ho lebota la putty formulations. Lintho tsa eona tse ikhethang, tse kenyelletsang ho qhibiliha, ho laola li-viscosity le bokhoni ba ho etsa lifilimi, ho etsa hore e be se loketseng bakeng sa ho ntlafatsa ts'ebetso le ho tšoarella ha marako a marako. Ho sa tsotellehe hore na li sebelisoa ka tlung kapa ka ntle, li-putty tsa lebota tse nang le HPMC li fana ka boleng bo tsitsitseng, ts'ebetso e ntlafetseng ea ts'ebetso le tšireletso ea nako e telele khahlanong le maemo a tikoloho. Ha indasteri ea kaho e ntse e tsoela pele ho fetoha, karolo ea HPMC mekhoeng ea ho etsa mabota e ntse e le ea bohlokoa ho fihlelleng liphetho tsa boleng bo holimo le tse tiileng.
Nako ea poso: Jan-25-2024