Hydroxypropyl methylcellulose (HPMC) ke thepa ea indasteri e feto-fetohang e sebelisoang haholo ho etsoa ka leboteng la putty powder, 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 hlahisang polima e qhibilihang ka metsing ebile e na le mefuta e mengata 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 boemo ba leholimo ba 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 litlhophiso mme e ka etsoa ka mokhoa o ikhethileng ho fihlela litlhoko tse ikhethileng 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