Hydroxypropyl methylcellulose (HPMC) ke polymer e sebetsang ka bongata e sebelisoang haholo liindastering tse fapaneng ho kenyeletsoa kaho. Ho li-putty formulations, HPMC e fana ka mesebetsi e fapaneng, ho kenyelletsa ho ntlafatsa ts'ebetso, ho ntlafatsa ho khomarela, ho laola ho boloka metsi, le ho ntlafatsa thepa ea mochine.
Li-putty formulations li bapala karolo ea bohlokoa kahong e le thepa e feto-fetohang e tlatsang likheo, e boreleli, 'me e fana ka motheo o lekaneng oa lipente le lirafshoa. Hydroxypropyl methylcellulose (HPMC) ke e 'ngoe ea metsoako ea bohlokoa e sebelisoang mefuteng ea li-putty ka lebaka la thepa ea eona e ikhethang le ho feto-fetoha ha maemo.
1.HPMC thepa ea lik'hemik'hale
Hydroxypropylmethylcellulose ke semi-synthetic polymer e nkiloeng ho selulose. E tšoauoa ka sebopeho sa eona se ikhethileng, se nang le liketane tsa cellulose tse hokahantsoeng le lihlopha tsa hydroxypropyl le methyl. Tekanyo ea ho nkela lihlopha tsena sebaka e lekanya thepa ea HPMC, ho kenyelletsa le solubility, viscosity le bokhoni ba ho etsa lifilimi. Ka tloaelo, HPMC e sebelisitsoeng ho li-putty formulations e fumaneha maemong a mahareng ho isa ho a phahameng a viscosity a fanang ka thepa e hlokahalang ea rheological.
2. Mokhoa oa ketso oa foromo ea putty
Ntlafatsa ts'ebetso
HPMC e sebetsa joalo ka motenya le mofetoleli oa rheology ho ntlafatsa ts'ebetso ea li-putty formulations. Limolek'hule tsa polymer lia kopanya 'me li etsa marang-rang a mararo, a fanang ka viscosity le ho thibela likaroloana tse tiileng ho rarolla. Sena se tiisa hore esita le kabo le tšebeliso e bonolo ea putty, e e lumella ho ata le ho bopeha hantle ntle le ho thella kapa ho rotha.
Ntlafatsa ho khomarela
Ho khomarela ke thepa ea bohlokoa ho li-putty formulations kaha e khetholla matla a maqhama pakeng tsa putty le substrate. HPMC e ntlafatsa ho khomarela ka ho etsa filimi e tšesaane holim'a substrate, e khothalletsang ho kopana ha mechine le ho eketsa sebaka sa ho kopana pakeng tsa putty le substrate. Ho feta moo, mofuta oa hydrophilic oa HPMC o e lumella ho sebelisana le matrices a putty le substrates, e khothaletsa ho khomarela esita le libakeng tse thata.
taolo ea ho boloka metsi
Ho boloka metsi ho bohlokoa bakeng sa phekolo e nepahetseng le ho omisa li-putty formulations. HPMC e sebetsa joalo ka sesebelisoa sa ho boloka metsi ka ho monya le ho boloka mongobo ka har'a sebopeho sa eona sa limolek'hule. Sena se thibela mouoane o potlakileng oa metsi ho tsoa matrix a putty, ho netefatsa ts'ebetso ea nako e telele le ho fumana metsi a lekaneng a metsoako ea cementitious. Ho boloka metsi a laoloang ho boetse ho fokotsa ho honyela le ho phatloha nakong ea ho omisa, ho ntlafatsa ho tšoarella le ho qeta bokaholimo.
Ntlafatso ea ts'ebetso ea mochini
HPMC e ntlafatsa thepa ea mochini ea li-putty formulations ka ho matlafatsa matrix le ho ntlafatsa momahano. Polymer e theha maqhama a hydrogen le lisebelisoa tse ling ka har'a putty, e eketsa matla a eona, ho tenyetseha le ho hanyetsa tšusumetso. Ntle le moo, bokhoni ba ho etsa lifilimi ba HPMC bo theha tšitiso e sireletsang putty khatellong ea kantle le maemo a tikoloho, e eketsang nako e telele le bophelo bo bolelele.
3. Tšusumetso ea HPMC mosebetsing oa putty
Lintho tsa Rheological
HPMC e ama haholo boitšoaro ba rheological ba li-putty formulations, tse amang viscosity, thixotropy le thepa ea phallo. Polymer concentration, boima ba limolek'hule le tekanyo ea ho kenya sebaka e lekanya boemo ba phetoho ea viscosity, e lumellang baetsi ba lihlahisoa ho fetola thepa ea rheological ho latela litlhoko tse khethehileng tsa kopo. Tokiso e nepahetseng ea litekanyetso tsa HPMC e netefatsa ts'ebetso e nepahetseng ea kaho le ts'ebeliso.
ho khomarela
Ho ba teng ha HPMC ho matlafatsa matla a tlamahano ea sebopeho sa putty, e leng se etsang hore ho ntlafatsoe ho khomarela likarolo tse fapaneng tse kenyelletsang konkreite, lehong, tšepe le masonry. Baqapi ba ka fetola boemo ba HPMC le ho tsepamisa maikutlo ho fihlela thepa e lakatsehang ea tlamahano, ho netefatsa hore e tsamaellana le lisebelisoa tse fapaneng tsa bokaholimo le maemo a tikoloho. Tokiso e nepahetseng ea bokaholimo le mekhoa ea ts'ebeliso e ka tlatselletsa litlamorao tsa ho khothaletsa bond ea HPMC ho eketsa matla a bond le ho tšoarella ha nako e telele.
marabele a metsi
HPMC e thusa ho ntlafatsa ho hanyetsa metsi a li-putty formulations ka ho laola ho boloka metsi le ho fokotsa ho phunyeha ha metsi. Polymer e etsa filimi ea hydrophilic e thibelang ho kenella ha metsi ka har'a matrix a putty, ho thibela ho ruruha, ho senyeha le ho lahleheloa ke thepa ea mochine. Khetho e nepahetseng ea limaraka tsa HPMC le li-additives tsa tlhahiso li ka ntlafatsa ho hanyetsa metsi, ho etsa hore putty e loketse lits'ebetso tsa kahare le kantle tse pepeselitsoeng mongobo.
4. Matla a mochine le ho tšoarella
Ho kenyelletsa HPMC ho li-putty formulations ho eketsa matla a mochine, ho tšoarella, le ho hanyetsa ho phunyeha, ho fokotseha, le boemo ba leholimo. Polymer e sebetsa e le ntho e matlafatsang, e matlafatsang matrix a putty le ho ntlafatsa momahano. Ho feta moo, bokhoni ba HPMC ba ho laola ho bolokoa ha metsi le ho khothaletsa pheko e nepahetseng bo thusa ho matlafatsa bond le ts'ebetso ea nako e telele. Li-Formulators li ka ntlafatsa litekanyetso tsa HPMC le liparamente tsa tlhahiso ho fihlela tekano e nepahetseng ea thepa ea mochini le ho tšoarella.
5. Lintlha tse sebetsang bakeng sa ho theha
Khetho ea limaraka tsa HPMC
Ha ho khethoa kereiti e nepahetseng ea HPMC bakeng sa sebopeho sa putty, baetsi ba liforomo ba tlameha ho nahana ka lintlha tse fapaneng, ho kenyelletsa le viscosity, degree of substitution, le ho lumellana le metsoako e meng. Limaraka tse holimo tsa viscosity li loketse li-putty tse teteaneng le lits'ebetso tse otlolohileng, athe limaraka tse tlase tsa viscosity li loketse masela a boreleli le ho hasana habonolo. Baqapi ba boetse ba tlameha ho netefatsa tšebelisano lipakeng tsa HPMC le li-additives tse ling tse kang li-filler, li-pigment, le li-preservatives ho qoba mathata a tšebelisano le ho senyeha ha ts'ebetso.
ho ntlafatsa lethal dose
Palo e nepahetseng ea HPMC e ipapisitse le lintlha tse kang thepa e lakatsehang, mokhoa oa kopo, mofuta oa substrate le maemo a tikoloho. Basebelisi ba lokela ho etsa liteko tse felletseng ho fumana hore na tekanyetso e tlase e sebetsang e fihlelang tšebetso e lakatsehang ntle le ho senya litšenyehelo. Tšebeliso e feteletseng ea HPMC e ka baka viscosity e feteletseng, mathata a kopo, le linako tsa ho omisa nako e telele, ha tšebeliso e tlase e ka fella ka taolo e sa lekaneng ea rheology le ts'ebetso e fokotsehileng.
6. Ho lumellana le li-additives tse ling
HPMC e sebelisana le li-additives tse fapaneng tse atisang ho sebelisoa ha ho etsoa li-putty, tse kang li-thickeners, dispersants le li-preservatives. Baqapi ba lokela ho lekola ka hloko tšebelisano le tšebelisano ea HPMC le lisebelisoa tse ling ho netefatsa ts'ebetso e nepahetseng le botsitso. Teko ea ho lumellana, ho kenyeletsoa tlhahlobo ea rheological le tlhahlobo ea nako e telele ea polokelo, e thusa ho tseba tšebelisano efe kapa efe e ka bang teng kapa mathata a sebopeho qalong ea ts'ebetso ea nts'etsopele e le hore ho ka etsoa litokiso le ntlafatso.
7. Theknoloji ea kopo
Mekhoa e nepahetseng ea ts'ebeliso e bohlokoa ho holisa ts'ebetso ea li-putty formulations tse nang le HPMC. Basebelisi ba lokela ho fana ka litaelo tse hlakileng le litataiso bakeng sa ho lokisa bokaholimo, ho tsoaka, ts'ebeliso le pheko ho netefatsa liphetho tse nepahetseng. Ho finyella sekhomaretsi se hlokahalang, ho boreleli le ho tšoarella, mekhoa e kang priming, substrate conditioning le liphahlo tse ngata li ka 'na tsa hlokahala. Koetliso le thuto ea basebetsi ba kaho li tsoela pele ho netefatsa liphetho tse tsitsitseng, tsa boleng bo holimo, ho fokotsa ho sebetsa bocha le litaba tsa tiisetso.
Nako ea poso: Feb-22-2024