Liaparo tse entsoeng ka metsi li ntse li e-ba bohlokoa haholo 'marakeng oa liphahlo tsa sejoale-joale ka lebaka la thepa ea tsona e baballang tikoloho le tlhahiso e tlase ea "volatile organic compound" (VOC). Leha ho le joalo, ha ho bapisoa le liphahlo tse tloaelehileng tse thehiloeng ho solvent, liaparo tse nang le metsi li atisa ho tobana le mathata mabapi le ho etsa filimi le ho khomarela. Ho rarolla mathata ana, hangata li-additives tse ling tse sebetsang li kenyelletsoa ho sebopeho. Hydroxyethyl cellulose (HEC) ke e 'ngoe ea li-thickeners tse sebelisoang haholo le li-additives tse sebetsang, tse phethang karolo ea bohlokoa ho ntlafatsa ho etsa filimi le ho khomarela liphahlo tse nang le metsi.
1. Lintho tsa motheo tsa hydroxyethyl cellulose (HEC)
HEC ke polymer e se nang ionic e qhibilihang ka metsing e fumanoang ka ho fetola lik'hemik'hale tsa cellulose ea tlhaho. Sebopeho sa eona sa limolek'hule se na le palo e kholo ea lihlopha tsa hydroxyethyl, e leng se etsang hore e be le ho qhibiliha ha metsi hantle le thepa ea ho etsa lifilimi. Litšobotsi tse ka sehloohong tsa HEC li kenyelletsa:
Phello e matla: HEC e ka eketsa ka katleho li-viscosity tsa liaparo tse nang le metsi, ho ba fa rheology e ntle le botsitso nakong ea ho roala.
Thepa ea ho etsa lifilimi: HEC e ka etsa filimi e ts'oanang nakong ea ho omisa ha ho roala, ho ntlafatsa thepa ea 'mele ea ho roala.
Ho lumellana: HEC e lumellana hantle le mefuta e fapaneng ea li-resin le li-pigment tse thehiloeng metsing, 'me ha e na tloaelo ea ho se tsitse ha foromo kapa stratification.
2. Mokhoa oa HEC ho ntlafatsa thepa ea ho etsa lifilimi ka liaparo tse nang le metsi
HEC e ka ntlafatsa haholo thepa ea ho etsa lifilimi ka liphahlo tse entsoeng ka metsi, haholo-holo ka lebaka la sebopeho sa eona se ikhethang sa limolek'hule le thepa ea 'mele le ea lik'hemik'hale.
Khokahano ea 'mele ea liketane tsa limolek'hule: liketane tsa limolek'hule tsa HEC li telele ebile lia tenyetseha. Nakong ea ts'ebetso ea ho omisa ea ho roala, liketane tsena tsa limolek'hule li ka kopanya hammoho ho theha marang-rang a marang-rang a marang-rang, ho eketsa matla a mochine le ho feto-fetoha ha ho roala.
Taolo ea mongobo: HEC e na le ho boloka metsi hantle 'me e ka lokolla mongobo butle-butle nakong ea mokhoa oa ho omisa oa ho roala, ho lelefatsa nako ea ho etsa filimi, ho lumella ho roala hore ho thehoe ka mokhoa o ts'oanang, le ho fokotsa ho phunyeha le ho fokotseha ho bakoang ke ho omisa ka potlako ka potlako.
Taolo ea tsitsipano ea holim'a metsi: HEC e ka fokotsa ka katleho tsitsipano ea holim'a metsi a thehiloeng holim'a metsi, e khothalletsa ho kolobisa le ho hasana ha liphahlo holim'a substrate, le ho ntlafatsa ho tšoana le ho bata ha seaparo.
3. Mokhoa oa HEC ho ntlafatsa ho khomarela liphahlo tse entsoeng ka metsi
HEC e ka boela ea ntlafatsa haholo ho khomarela liphahlo tse thehiloeng metsing, tse bonahalang haholo-holo likarolong tse latelang:
Ntlafatso ea Sehokelo: Kabo e ts'oanang ea HEC ka ho roala e ka eketsa sebaka sa ho ikopanya pakeng tsa ho roala le karolo ea substrate le ho matlafatsa matla a ho kopanya sefahleho. Ketane ea eona ea limolek'hule e ka hokahana le likaroloana tse nyane tsa khoho le tse khoafo tsa bokaholimo ho ntlafatsa ho khomarela 'meleng.
Tšebelisano ea lik'hemik'hale: HEC ke polymer e seng ea ionic e nang le lik'hemik'hale tse ntle tsa lik'hemik'hale tse nang le mefuta e fapaneng ea li-substrates (tse kang tšepe, lehong, polasetiki, joalo-joalo), 'me ha ho bonolo ho baka lik'hemik'hale tsa lik'hemik'hale kapa mathata a ho lumellana ha sefahleho, kahoo ho ntlafatsa ho khomarela.
Phello ea Plasticizing: HEC e ka bapala karolo e itseng ea polasetiki molemong oa ho omisa, ho etsa hore seaparo se be bonolo haholoanyane, e le hore se khone ho ikamahanya hantle le deformation e nyane le katoloso ea mocheso le ho honyela ha karolo e ka tlas'a lefatše, le ho fokotsa ho phunya le ho phatloha. ea ho roala.
4. Mehlala ea ts'ebeliso le litlamorao tsa HEC
Lits'ebetsong tse sebetsang, HEC e sebelisoa haholo mefuteng e sa tšoaneng ea litlolo tse entsoeng ka metsi, tse kang liphahlo tsa meralo ea metsi, liphahlo tsa lehong tse entsoeng ka metsi, liphahlo tsa indasteri tse thehiloeng metsing, joalo-joalo Ka ho eketsa palo e loketseng ea HEC, mohaho oa kaho. ts'ebetso ea ho roala le boleng ba filimi ea ho qetela ea ho roala e ka ntlafatsoa haholo.
Liaparo tsa meralo tse thehiloeng metsing: Ka lipente tsa marako tse thehiloeng metsing le lipente tse ka ntle tsa marako, ho eketsa HEC ho ka ntlafatsa ka katleho ts'ebetso ea ho roala le ho phunyeletsa ha ho roala, ho etsa hore ho be bonolo ho kenya lesela le filimi ea ho roala ka mokhoa o ts'oanang le o boreleli. Ka nako e ts'oanang, ho boloka metsi a HEC ho ka boela ha thibela mapetsong a filimi ea ho roala e bakoang ke ho omisa ka potlako.
Pente ea lehong e entsoeng ka metsi: Ka pente ea lehong e entsoeng ka metsi, thepa ea HEC e teteaneng le ea ho etsa filimi e thusa ho ntlafatsa pepeneneng le ho batalla ha filimi ea pente, ho etsa hore bokaholimo ba lehong bo be ntle le ba tlhaho. Ho phaella moo, HEC e ka ntlafatsa ho hanyetsa metsi le khanyetso ea lik'hemik'hale ea filimi ea ho roala le ho ntlafatsa phello ea tšireletso ea lehong.
Lisebelisoa tsa liindasteri tse entsoeng ka metsi: Ka liphahlo tsa tšepe tse entsoeng ka metsi le li-anti-corrosion, ntlafatso ea ho khomarela ea HEC e lumella filimi ea ho roala hore e khomarele hantle holim'a tšepe, ho ntlafatsa ts'ebetso e khahlanong le kutu le bophelo ba tšebeletso.
E le tlatsetso ea bohlokoa ea ts'ebetso, hydroxyethyl cellulose (HEC) e ntlafatsa haholo ts'ebetso ea kakaretso ea ho roala liaparo tse entsoeng ka metsi ka ho ntlafatsa thepa ea ho etsa filimi le ho khomarela. Botenya ba eona, ho boloka metsi, ho etsa lifilimi le litlamorao tsa ntlafatso ea sehokelo ho etsa hore liphahlo tse thehiloeng metsing li sebetse hantle maemong a fapaneng a ts'ebeliso, ka hona, li fihlelle tlhoko ea 'maraka ea liphahlo tse sebetsang hantle, tse se nang tikoloho. Nakong e tlang, ka ntlafatso e tsoelang pele ea ts'ireletso ea tikoloho le litlhoko tsa ts'ebetso, litebello tsa kopo ea HEC ka liaparo tse thehiloeng metsing li tla ba tse pharaletseng.
Nako ea poso: Jul-12-2024