Selelekela
Li-cellulose ethers, haholo-holo Methyl Hydroxyethyl Cellulose (MHEC), li sebelisoa haholo liindastering tse fapaneng bakeng sa thepa ea tsona e makatsang. MHEC ke motsoako oa selulose o fetotsoeng o ntlafatsang ts'ebetso ea li-adhesives le sealants haholo. Motsoako ona o fana ka melemo e mengata, ho kenyelletsa le viscosity e ntlafalitsoeng, ho boloka metsi, ho sebetsa, le botsitso. Ho utloisisa mekhoa e tobileng eo MHEC e ntlafatsang ka eona li-adhesives le sealants e ka fana ka lintlha tsa bohlokoa mabapi le likopo tsa eona le melemo ea liindasteri tsena.
Ntlafatso ea Viscosity le Rheology
E 'ngoe ea litsela tse ka sehloohong tsa MHEC e ntlafatsang ts'ebetso ea li-adhesives le sealants ke ka phello ea eona ho viscosity le rheology. Limolek'hule tsa MHEC, ha li qhibiliha ka metsing, li etsa tharollo e khanyang haholo. Viscosity ena e ntseng e eketseha e bohlokoa bakeng sa likhomaretsi le li-sealant kaha e netefatsa ts'ebeliso e laoloang haholoanyane, e fokotsang tšekamelo ea sehlahisoa ho sebetsa kapa ho sisinyeha. Thepa ena e molemo haholo bakeng sa lits'ebetso tse otlolohileng moo ho boloka boemo ba sekhomaretsi kapa sealant ho leng bohlokoa.
Boitšoaro ba rheological bo fanoeng ke MHEC bo thusa ho finyella tlhaho ea thixotropic ka li-adhesives le sealants. Thixotropy e bua ka thepa ea li-gels tse itseng kapa metsi a teteaneng (viscous) tlas'a maemo a tsitsitseng empa a phalla (e ba a fokolang haholo) ha a ferekanngoa kapa a hatelloa. Sena se bolela hore li-adhesives le sealants tse nang le MHEC li ka sebelisoa habonolo ha ho kuta ho sebelisoa (mohlala, nakong ea brushing kapa troweling) empa ho tsosolosa viscosity ea bona ka potlako hang ha matla a kopo a tlosoa. Tšobotsi ena e bohlokoa bakeng sa ho thibela ho theoha le ho rotha, ho netefatsa hore thepa e lula e le teng ho fihlela e fola.
Ntlafatso ea ho boloka metsi
MHEC e tsebahala ka bokhoni ba eona bo botle ba ho boloka metsi. Sebakeng sa li-adhesives le sealants, thepa ena ke ea bohlokoa ka ho khetheha. Ho boloka metsi ho bohlokoa ho netefatsa pheko e nepahetseng le ho beha lisebelisoa tsena. Mongobo o lekaneng oa hlokahala bakeng sa ts'ebetso ea hydration ka li-adhesives tse entsoeng ka samente, 'me ka mefuta e meng ea li-adhesive, e tiisa hore sekhomaretsi se lula se sebetsa ka nako e telele pele se beha.
Thepa ea ho boloka metsi ea MHEC e thusa ho boloka boemo ba sekhomaretsi kapa sealant's hydration, e leng sa bohlokoa bakeng sa ho fihlela matla a maholo a bond. Ka li-adhesives tse thehiloeng ho samente, MHEC e thibela ho omisoa pele ho nako, e leng se ka lebisang ho hydration e sa phethoang le ho fokotsa matla. Bakeng sa li-sealants, ho boloka mongobo o lekaneng ho tiisa sebopeho se tsitsitseng le ho feto-fetoha ha maemo nakong ea kopo le ho folisa.
Ntlafatso ea Ts'ebetso le Thepa ea Ts'ebetso
Ho kenyelletsoa ha MHEC ho li-adhesives le sealants ho ntlafatsa haholo ts'ebetso ea bona le boiketlo ba ts'ebeliso. Phello ea ho tlotsa ea MHEC e ntlafatsa ho ata ha lihlahisoa tsena, ho etsa hore ho be bonolo ho li sebelisa ka lisebelisoa tse kang trowels, brushes, kapa sprayers. Thepa ena e bohlokoa haholo mesebetsing ea kaho le ea DIY moo boiketlo ba tšebeliso bo ka amang ts'ebetso le boleng ba mosebetsi haholo.
Ho feta moo, MHEC e kenya letsoho ho boreleli le botsitso ba sekhomaretsi kapa sealant. Ho ts'oana hona ho tiisa hore thepa e ka sebelisoa ka mokhoa o mosesaane, o lekaneng, e leng oa bohlokoa bakeng sa ho finyella maqhama a nepahetseng le ho tiisa. Ts'ebetso e ntlafalitsoeng e boetse e fokotsa boikitlaetso bo hlokahalang bakeng sa kopo, ho etsa hore ts'ebetso e se ke ea hloka mosebetsi o boima le e sebetsang haholoanyane.
Eketsa Nako ea ho Bula le Nako ea Mosebetsi
Molemo o mong oa bohlokoa oa MHEC ho li-adhesives le sealants ke ho eketseha ha nako ea ho bula le nako ea mosebetsi. Nako e bulehileng e bua ka nako eo sekhomaretsi se lulang se le thata 'me se ka theha maqhama le substrate, ha nako ea mosebetsi e le nako eo sekhomaretsi kapa sealant se ka sebelisoang kapa sa lokisoa ka mor'a kopo.
Bokhoni ba MHEC ba ho boloka metsi le ho boloka viscosity bo thusa ho lelefatsa linako tsena, ho fa basebelisi maemo a bonolo nakong ea kopo. Nako ena e atolositsoeng ea ho bula e molemo haholo mererong e rarahaneng moo maemo a nepahetseng le litokiso li hlokahalang. E boetse e fokotsa kotsi ea ho seta pele ho nako, e ka senyang boleng ba bond.
Ntlafatso ea Khomano le Momahano
MHEC e ntlafatsa likarolo tse peli tsa ho khomarela le ho kopanya li-adhesives le sealants. Ho khomarela ho bolela bokhoni ba thepa ea ho khomarela substrate, ha ho kopana ho bolela matla a ka hare a thepa ka boeona. Lintho tse ntlafetseng tsa ho boloka metsi le li-viscosity tsa MHEC li kenya letsoho ho kenella hantle ka har'a li-porous substrates, ho ntlafatsa tlamahano ea sekhomaretsi.
Ho phaella moo, kopo ea junifomo le e laoloang e tsamaisoang ke MHEC e tiisa hore sekhomaretsi kapa sekontiri se etsa tlamahano e tsitsitseng le e tsoelang pele le substrate. Ho tšoana hona ho thusa ho eketsa sebaka sa ho ikopanya le matla a sekhomaretsi se khomarelang. Thepa e kopantsoeng e boetse e ntlafatsoa, kaha thepa e boloka botšepehi ba eona 'me ha e qhekelle kapa e senya ho tloha ho substrate.
Ho hanyetsa Lintho tsa Tikoloho
Likhomaretsi le li-sealants hangata li pepesetsoa mabaka a fapaneng a tikoloho joalo ka ho fetoha ha mocheso, mongobo le ho pepesehela lik'hemik'hale. MHEC e kenya letsoho ho tšoarella le ho tiea ha lisebelisoa tsena tlas'a maemo a joalo. Lintho tse bolokang metsi tsa MHEC li thusa ho boloka ho feto-fetoha ha maemo le elasticity ea li-sealants, tse bohlokoa bakeng sa ho amohela ho atolosoa ha mocheso le ho fokotseha ntle le ho senya.
Ho feta moo, MHEC e ntlafatsa ho hanyetsa ha li-adhesives le sealants ho senyeha ho bakoang ke khanya ea ultraviolet (UV) le oxidation. Ts'ebetso ena e matlafalitsoeng e tiisa hore ts'ebetso ea sekhomaretsi kapa sealant e lula e tsitsitse ha nako e ntse e ea, esita le maemong a thata a tikoloho.
Ho lumellana le Li-additives tse ling
MHEC e lumellana le mefuta e mengata ea li-additives tse sebelisoang ho li-adhesives le sealants. Tšebelisano ena e lumella baetsi ba lihlahisoa ho kopanya MHEC le lisebelisoa tse ling tse sebetsang ho finyella litšobotsi tse itseng tsa tshebetso. Mohlala, MHEC e ka sebelisoa hammoho le li-plasticizers, li-filler, le li-stabilizers ho ntlafatsa maemo a bonolo, ho fokotsa ho putlama, le ho ntlafatsa ts'ebetso ka kakaretso.
Ho feto-fetoha hona ho etsa hore MHEC e be karolo ea bohlokoa haholo ha ho etsoa li-adhesives le li-sealants tse tsoetseng pele, tse nolofalletsang nts'etsopele ea lihlahisoa tse lumellanang le likopo tse khethehileng le litlhoko tsa ts'ebetso.
Methyl Hydroxyethyl Cellulose (MHEC) e ntlafatsa haholo ts'ebetso ea li-adhesives le sealants ka thepa ea eona e ikhethang. Ka ho ntlafatsa viscosity, ho boloka metsi, ho sebetsa hantle, nako e bulehileng, ho khomarela, le ho hanyetsa maemo a tikoloho, MHEC e tiisa hore li-adhesives le sealants li sebetsa ka ho fetisisa lits'ebetsong tse sa tšoaneng. Ho lumellana ha eona le li-additives tse ling ho eketsa ts'ebeliso ea eona, ho etsa hore e be motsoako oa bohlokoa ho thehoeng ha li-adhesive le li-sealants tse sebetsang hantle. Ha liindasteri li ntse li tsoela pele ho batla lisebelisoa tse nang le ts'ebetso e phahameng le ho tšepahala, karolo ea MHEC ho li-adhesives le sealants e ka 'na ea e-ba e hlaheletseng le ho feta.
Nako ea poso: May-24-2024