Hydroxyethyl cellulose (HEC) ke polima e se nang ionic, e qhibilihang ka metsing e tsoang ho selulose. E sebelisoa haholo lits'ebetsong tse fapaneng tsa indasteri ka lebaka la thepa ea eona e ikhethang, haholo ha ho etsoa li-adhesives. Ho tsitsa ha li-adhesives le bokhoni ba bona ba ho boloka metsi ke ba bohlokoa bakeng sa ts'ebetso ea bona, 'me HEC e phetha karolo ea bohlokoa ho ntlafatsa likarolo tsena.
Sebopeho sa lik'hemik'hale le thepa ea Hydroxyethyl Cellulose
HEC e hlahisoa ke karabelo ea cellulose e nang le ethylene oxide, e hlahisang ether ea cellulose e nang le lihlopha tsa hydroxyethyl. Phetoho ena e ntlafatsa ho qhibiliha ha selulose metsing le ho eketsa viscosity ea eona. Tekanyo ea ho kenya sebaka (DS) le molar substitution (MS) ea lihlopha tsa hydroxyethyl mokokotlong oa cellulose li khetholla thepa ea HEC. Ka tloaelo, DS e phahameng le MS li etsa hore ho be le ho qhibiliha ha metsi ho eketsehileng le viscosity, ho etsa hore HEC e be ntho e sebetsang e matla le e tsitsitseng.
Mekhoa ea Botsitso ba Sekhomaretsi
Botsitso ba sekhomaretsi bo bolela bokhoni ba sebopeho sa sekhomaretsi ho boloka botsitso, homogeneity, le litšobotsi tsa ts'ebetso ha nako e ntse e ea. Lintlha tse 'maloa li tlatsetsa botsitso ba sekhomaretsi, ho kenyelletsa le thepa ea rheological, ho hanyetsa ho arohana ha mekhahlelo, le ho lumellana le likarolo tse ling.
Lintho tsa Rheological
Litšobotsi tsa rheological tsa likhomaretsi, joalo ka viscosity le boits'oaro ba ho kuta, li bohlokoa bakeng sa ts'ebeliso le ts'ebetso ea tsona. HEC e ntlafatsa thepa ena ka ho etsa mohaho oa marang-rang ka har'a matrix a khomarelang. Liketane tsa polymer tsa HEC li sebelisana hammoho le likarolo tsa sekhomaretsi, ho etsa tharollo ea viscous e hanyetsanang le ho phalla tlas'a maemo a tlaase a ho kuta empa e fetoha li-viscous tse fokolang tlas'a ho kuta haholo. Boitšoaro bona ba ho kuta moriri bo molemo nakong ea tšebeliso ea li-adhesives, kaha bo lumella ho hasana habonolo le ho qhekella ha ho ntse ho boloka botsitso hang ha ho sebelisoa.
Ho hanyetsa karohano ea Mokhahlelo
Karohano ea mekhahlelo ea li-adhesives e ka etsahala ka lebaka la ho se lumellane ha likarolo tse fapaneng kapa ka lebaka la liphetoho tsa maemo a tikoloho joalo ka mocheso le mongobo. HEC e thusa ho thibela ho arohana ha mekhahlelo ka ho sebetsa e le colloidal stabilizer. Sebopeho sa eona sa hydrophilic se e lumella ho sebelisana le metsi le likarolo tse ling tsa polar, ho etsa motsoako oa homogenous. Ho phaella moo, boima bo phahameng ba limolek'hule tsa HEC bo fana ka botsitso ba steric, ho fokotsa monyetla oa ho arohana ha mekhahlelo ka nako.
Ho lumellana le Likarolo tse ling
HEC e lumellana le mefuta e mengata e fapaneng ea likarolo tsa sekhomaretsi, ho kenyelletsa le li-resin, li-filler le li-additives tse ling. Ho lumellana hona ho tiisa hore HEC e ka kenngoa habonolo mefuteng e sa tšoaneng ea sekhomaretsi ntle le ho ama ts'ebetso ea bona hampe. Ho feta moo, HEC e ka ntlafatsa ho hasana ha li-filler le likaroloana tse ling tse tiileng ka har'a sekhomaretsi, e leng se tlatsetsang ho sehlahisoa se ts'oanang le se tsitsitseng.
Thepa ea ho Boloka Metsi
Ho boloka metsi ke thepa ea bohlokoa bakeng sa lits'ebetso tse ngata tsa sekhomaretsi, haholo tse kenyelletsang li-porous substrates kapa nako e telele ea ho bula. HEC e ntlafatsa haholo matla a ho boloka metsi a likhomaretsi ka mekhoa e mengata.
Hydrophilicity le ho Tlama Metsi
HEC e na le hydrophilic haholo, ho bolelang hore e na le kamano e matla ea metsi. Thepa ena e lumella HEC ho monya le ho boloka metsi a mangata ka har'a matrix a sekhomaretsi. Lihlopha tsa hydroxyethyl mokokotlong oa cellulose li theha maqhama a haedrojene le limolek'hule tsa metsi, li li tšoasa ka nepo le ho fokotsa sekhahla sa mouoane oa metsi. Sena se bohlokoa haholo lits'ebetsong moo ho boloka boemo bo itseng ba mongobo bo leng bohlokoa bakeng sa ts'ebetso ea sekhomaretsi.
Tlhahiso ea Lifilimi le Thibelo ea Mongobo
Ntle le metsi a tlamang, HEC e kenya letsoho ho thehoeng ha filimi e tsoelang pele holim'a sekhomaretsi. Filimi ena e sebetsa e le tšitiso ea tahlehelo ea mongobo, e leng ho matlafatsang ho boloka metsi. Bokhoni ba ho etsa lifilimi ba HEC bo molemo lits'ebetsong moo ho hlokahalang nako e telele e bulehileng, joalo ka li-adhesives tsa wallpaper le li-adhesives tsa lithaele. Ka ho fokotsa lebelo la ho fetoha mouoane oa metsi, HEC e etsa bonnete ba hore sekhomaretsi se lula se sebetsa ka nako e telele, se lumellang hore ho be le liphetoho le ho behoa bocha ha thepa e kopantsoeng.
Tšusumetso ho Nako ea ho Omisa le Matla a Sekhomaretsi
Thepa ea ho boloka metsi ea HEC e boetse e susumetsa nako ea ho omisa le matla a ho qetela a likhomaretsi. Ka ho boloka metsi ka har'a matrix a sekhomaretsi, HEC e laola lebelo la tahlehelo ea metsi, e lebisang ts'ebetsong e laoloang le e ts'oanang ea ho omisa. Ho omisa hona ho laoloang ho bohlokoa bakeng sa ho fumana matla a matle a sekhomaretsi, kaha ho lumella sebopeho se nepahetseng sa filimi le ho tlamahana le substrate. Ho omisa ka potlako ho ka etsa hore ho be le litlamo tse fokolang le ho khomarela ho fokolang, ha mokhoa o laoloang oa ho omisa o nolofalitsoeng ke HEC o tiisa hore ho na le maqhama a matla le a tšoarellang.
Lisebelisoa tsa HEC ho Adhesives
HEC e sebelisoa mefuteng e mengata ea likhomaretsi, ho kenyelletsa:
Li-Adhesives tsa Kaho: HEC e atisa ho sebelisoa ho li-adhesives tsa kaho bakeng sa ho boloka metsi le thepa e teteaneng, ho etsa bonnete ba hore maqhama a tsitsitseng le a tšoarellang ka thepa ea mohaho.
Li-Adhesives tsa Wallpaper: Bokhoni ba HEC ba ho boloka metsi le ho fana ka nako e telele e bulehileng bo etsa hore e be e loketseng bakeng sa likhomaretsi tsa Wallpaper, e lumellang ts'ebeliso e bonolo le phetoho.
Li-adhesives tsa Lithaele: Ka li-adhesives tsa lithaele, HEC e ntlafatsa ts'ebetso le ho khomarela ka ho boloka mongobo o hlokahalang bakeng sa ho beha hantle le ho tlamahanngoa.
Li-Packaging Adhesives: HEC e ntlafatsa ts'ebetso ea li-adhesives tsa ho paka ka ho matlafatsa botsitso le ho hanyetsa ho arohana ha mekhahlelo, ho netefatsa boleng bo tsitsitseng le ts'ebetso.
Hydroxyethyl cellulose e bapala karolo ea bohlokoa ho matlafatsa botsitso le thepa ea ho boloka metsi ea likhomaretsi. Sebopeho sa eona se ikhethang sa lik'hemik'hale le thepa li kenya letsoho ho ntlafatsa litšobotsi tsa rheological, ho hanyetsa karohano ea mekhahlelo, le ho lumellana le likarolo tse sa tšoaneng tsa sekhomaretsi. Ho feta moo, hydrophilicity le bokhoni ba ho etsa lifilimi ba HEC bo ntlafatsa haholo ho bolokoa ha metsi, ho lebisang taolong e betere ea linako tsa ho omisa le matla a sekhomaretsi. Ho feto-fetoha ha maemo le katleho ea HEC ho etsa hore e be karolo ea bohlokoa haholo ha ho etsoa li-adhesives tse ngata, ho netefatsa hore li sebetsa hantle le ho tšepahala lits'ebetsong tse fapaneng.
Nako ea poso: Jun-02-2024