Hydroxypropyl methylcellulose (HPMC) ke polymer e feto-fetohang e sebelisoang hangata e le tlatsetso liindastering tse fapaneng, ho kenyeletsoa le lekala la kaho, moo e sebetsang e le karolo ea bohlokoa mekhoeng ea konkreite.
1.Selelekela ho HPMC:
HPMC ke non-ionic cellulose ether nkiloeng tlhaho polymer selulose ka letoto la liphetoho lik'hemik'hale.Ke phofo e tsoeu ho isa ho e tšoeu, e sa nkhang hamonate, 'me e sa latsoeheng e qhibilihang ka metsing le lihlapolli tse ngata tsa polar organic.Sebopeho se ikhethileng sa lik'hemik'hale sa HPMC se fana ka thepa e 'maloa e lakatsehang, e e etsa khetho e nepahetseng bakeng sa mefuta e mengata ea lits'ebetso.
2.Properties of HPMC:
Poloko ea Metsi: HPMC e bonts'a thepa e ntle ea ho boloka metsi, e lumellang hore ho be le hydration e ntle ea likaroloana tsa samente ka har'a motsoako oa konkreite.Thepa ena e bohlokoa bakeng sa ho boloka ts'ebetso le ho thibela ho omisoa pele ho nako ea konkreite, haholo maemong a chesang kapa a moea.
Bokhoni ba ho Tiisa: HPMC e sebetsa e le ntho e teteaneng mekhoeng ea konkreite, e fana ka viscosity le ho ntlafatsa ho tsitsa ha motsoako.Sena se thusa ho sebetsana hantle, ho pompa le ho sebelisoa ha konkreite, ho etsa bonnete ba hore sehlahisoa sa ho qetela se tšoana.
Ntlafatso ea Ts'ebetso e Ntlafetseng: Ka ho matlafatsa momahano le lubricity ea motsoako oa konkreite, HPMC e thusa ho behoa habonolo le ho qeta thepa.E fokotsa karohano le ho tsoa mali, e leng se etsang hore ho be le boreleli holim'a metsi le ho ntlafatsa ho sebetsa ka kakaretso.
Khothatso ea ho Adhesion: HPMC e theha filimi e sireletsang ho potoloha likaroloana tsa samente, e ntlafatsang ho khomarela ha tsona ho li-aggregates le lisebelisoa tse matlafatsang.Thepa ena e ntlafatsa matla a bond le ho tšoarella ha meaho ea konkreite, haholo lits'ebetsong moo ho lebelletsoeng khatello e phahameng ea mochini kapa ho pepesehela maemo a thata.
Tlhophiso e Laolang: Ho ba teng ha HPMC ka ho etsoa ha konkreite ho ka susumetsa nako ea ho beha le nts'etsopele ea matla a pele, ho lumella taolo e ntle holim'a mokhoa oa ho phekola.Sena se molemo maemong ao ho hlokahalang nako e eketsehileng ea ho sebetsa kapa maemo a liehang.
3. Likopo tsa HPMC ka Konkreite:
HPMC e fumana ts'ebeliso e atileng lits'ebetsong tse fapaneng tsa konkreite, ho kenyelletsa empa e sa felle ho:
Mortars and Renders: HPMC hangata e kenyelletsoa seretseng mme e fana ka litlhahlobo ho ntlafatsa ts'ebetso, ho khomarela le ho boloka metsi.E thusa ho thibela ho petsoha, ho honyela le ho thella nakong ea ts'ebeliso, ho fella ka litlatsetso tse tšoarellang le tse khahlisang ka bokhabane.
Metsoako ea ho Ikemela: Ka li-screeds tsa fatše tse ipehang fatše le li- underlayments, HPMC e thusa ho finyella thepa e lakatsehang ea phallo le boreleli ba bokaholimo.E nolofalletsa thepa hore e hasane ka mokhoa o ts'oanang holim'a substrate, e tlatsa li-voids le ho leka-lekanya mekhoa e sa tšoaneng ho etsa sephara le holimo.
Likhomaretsi tsa Lithaele le Li-Grouts: HPMC ke karolo ea bohlokoa ea likhomaretsi tsa lithaele le li-grouts, moo e sebetsang e le sekontiri, se bolokang metsi le mofetoleli oa rheology.E etsa bonnete ba ho koloba ka nepo ha lithaele, e ntlafatsa ho khomarela li-substrates, 'me e thibela ho honyela le ho peperana ha ho folisoa.
Shotcrete le Sprayed Concrete: Lits'ebetsong tsa konkreite tse fafalitsoeng, HPMC e thusa ho laola ho khutla hape le ho ntlafatsa momahano, e lumellang ho khomarela hamolemo libakeng tse otlolohileng kapa tse holimo.E nolofalletsa thepa hore e sebelisoe ka botenya bo tsitsitseng le litšila tse fokotsehileng le botšepehi bo ntlafetseng ba sebopeho.
Lihlahisoa tsa Konkreite tsa Precast: HPMC e bapala karolo ea bohlokoa tlhahisong ea likarolo tsa konkreite ka ho ntlafatsa ts'ebetso ea motsoako le ho tsamaisa ts'ebetso ea ho theola.E netefatsa kabo e tšoanang ea li-aggregates le li-reinforcements, e leng se hlahisang lihlahisoa tse felileng tsa boleng bo holimo tse nang le mefokolo e fokolang.
4.Melemo ea ho Sebelisa HPMC ka Konkreite:
Ts'ebetso e Ntlafetseng: Kenyeletso ea HPMC mekhoeng ea konkreite e lebisa ho ntlafatso ea thepa ea mochini, ho tšoarella, le ho hanyetsa maemo a tikoloho joalo ka potoloho ea leqhoa, ho pepeseha ha lik'hemik'hale le ho abrasion.
Keketseho ea Tlhahiso: Ka ho ntlafatsa ts'ebetso, ho fokotsa nako ea ho kopanya, le ho fokotsa litšila tsa thepa, HPMC e thusa borakonteraka le bahlahisi ho eketsa tlhahiso le ho fumana chai e phahameng ka lisebelisoa tse fokolang.
HPMC e lumellana le mefuta e mengata e fapaneng ea lisebelisoa tsa samente, li-admixtures le li-admixtures, tse lumellang ho fetoha ha maemo ho moralo le ho etsoa ha konkreite.E ka hlophisoa ho fihlela litlhoko tse khethehileng tsa ts'ebetso le litlhoko tsa kopo.
Sustainability: Joalo ka polima e qhibilihang ka metsing, e ka bolang e tsoang mehloling e ka nchafatsoang, HPMC e fana ka melemo ea tikoloho ha e bapisoa le mefuta e meng ea maiketsetso.Tšebeliso ea eona e kenya letsoho ho nts'etsopele ea mekhoa e tsitsitseng ea kaho le matsapa a ho haha motala.
5.Liqholotso le Litlhokomelo:
Le ha HPMC e fana ka melemo e mengata lits'ebetsong tsa konkreite, liphephetso le mehopolo e itseng li lokela ho nahanoa:
Tekanyetso le Kamano: Tekanyo e nepahetseng le tumellano le lisebelisoa tse ling li bohlokoa ho fihlela sephetho se lakatsehang sa ts'ebetso.Ho lokela ho nahanoa ka hloko mabapi le khetho le tlhahiso ea lihlahisoa tse thehiloeng ho HPMC ho netefatsa hore li lumellana le mefuta e itseng ea samente le metsoako.
Taolo ea Boleng: Ho fapana ha thepa e tala, lits'ebetso tsa tlhahiso, le maemo a polokelo li ka ama boleng le ts'ebetso ea phofo ea HPMC.Mehato ea taolo ea boleng e lokela ho kengoa ts'ebetsong ho netefatsa botsitso le ts'epahalo tlhahisong ea konkreite.
Litšenyehelo: Litsenyehelo tsa li-additives tsa HPMC li ka ama moruo oa projeke le tlholisano, haholo mererong e meholo ea kaho.Leha ho le joalo, melemo e ka bang teng mabapi le ts'ebetso, tlhahiso, le nako e telele e ka feta matsete a pele.
Bophelo bo Botle le Polokeho: Le hoja HPMC ka kakaretso e nkuoa e bolokehile hore e ka sebelisoa lits'ebetsong tsa kaho, ho ts'oaroa hantle, ho boloka, le ho lahla litloaelo ho lokela ho lateloa ho fokotsa likotsi tse ka bang teng tsa bophelo bo botle le tikoloho tse amanang le ho pepesehela lerōle kapa ho qhalana ka phoso.
hydroxypropyl methylcellulose (HPMC) phofo ke tlatsetso ea bohlokoa indastering ea kaho, haholo-holo ka metsoako ea konkreite, moo e ntlafatsang ho sebetsa, ho khomarela, ho boloka metsi, le ho tšoarella.Thepa ea eona e ikhethang le lits'ebetso tse fapaneng li etsa hore e be karolo ea bohlokoa mefuteng e mengata ea thepa ea kaho le lits'ebetso.Ka ho utloisisa melemo, liphephetso, le lintlha tse amanang le ts'ebeliso ea HPMC, ba amehang ba ka etsa liqeto tse nang le tsebo ho ntlafatsa ts'ebetso e hlakileng le ho fihlela lipheo tsa nts'etsopele e tsitsitseng tikolohong e hahiloeng.
Nako ea poso: Apr-25-2024