Pente ea latex (eo hape e tsejoang e le pente e thehiloeng metsing) ke mofuta oa pente e nang le metsi e le solvent, e sebelisoang haholo bakeng sa ho khabisa le ho sireletsa marako, siling le libaka tse ling. Foromo ea pente ea latex hangata e na le emulsion ea polymer, pigment, filler, additives le lisebelisoa tse ling. Har'a bona,hydroxyethyl cellulose (HEC)ke motenya oa bohlokoa 'me o sebelisoa haholo penteng ea latex. HEC e ke ke ea ntlafatsa viscosity le rheology ea pente feela, empa hape e ntlafatsa ts'ebetso ea filimi ea pente.
1. Litšobotsi tsa motheo tsa HEC
HEC ke motsoako oa polymer o qhibilihang ka metsi o fetotsoeng ho tloha selulose e nang le thepa e ntle ea ho tiea, ho emisa le ho etsa lifilimi. Ketane ea eona ea limolek'hule e na le lihlopha tsa hydroxyethyl, tse e nolofalletsang ho qhibiliha ka metsing le ho etsa tharollo e phahameng ea viscosity. HEC e na le hydrophilicity e matla, e etsang hore e be le karolo ea ho tsitsisa ho emisoa, ho lokisa rheology le ho ntlafatsa ts'ebetso ea filimi ka pente ea latex.
2. Tšebelisano pakeng tsa HEC le emulsion ea polymer
Karolo ea mantlha ea pente ea latex ke polymer emulsion (e kang acrylic acid kapa ethylene-vinyl acetate copolymer emulsion), e etsang skeleton e kholo ea filimi ea pente. Tšebelisano lipakeng tsa AnxinCel®HEC le polymer emulsion e bonahala haholo maemong a latelang:
Botsitso bo ntlafetseng: HEC, e le motenya, e ka eketsa viscosity ea pente ea latex le ho thusa ho tsitsisa likaroloana tsa emulsion. Haholo-holo ka emulsion ea polymer e tlaase, ho eketsoa ha HEC ho ka fokotsa sedimentation ea likaroloana tsa emulsion le ho ntlafatsa botsitso ba polokelo ea pente.
Taolo ea Rheological: HEC e ka fetola thepa ea rheological ea pente ea latex, e le hore e be le ts'ebetso e ntle ea ho roala nakong ea kaho. Ka mohlala, nakong ea ts'ebetso ea ho penta, HEC e ka ntlafatsa thepa e thellang ea pente 'me ea qoba ho rotha kapa ho thella ha seaparo. Ho phaella moo, HEC e ka boela ea laola ho tsosolosoa ha pente le ho ntlafatsa ho tšoana ha filimi ea pente.
Ntlafatso ea ts'ebetso ea ho roala: Ho eketsoa ha HEC ho ka ntlafatsa ho feto-fetoha ha maemo, ho benya le ho hanyetsa ha mohatla. Sebopeho sa limolek'hule tsa HEC se ka sebelisana le emulsion ea polymer ho ntlafatsa sebopeho se akaretsang sa filimi ea pente, e etsa hore e be e teteaneng 'me kahoo e ntlafatse ho tšoarella ha eona.
3. Tšebelisano pakeng tsa HEC le li-pigments
Lipigment tsa lipente tsa latex hangata li kenyelletsa mebala ea tlhaho (joalo ka titanium dioxide, mica powder, joalo-joalo) le mebala ea tlhaho. Tšebelisano pakeng tsa HEC le li-pigments e bonahala haholo-holo likarolong tse latelang:
Pigment dispersion: Phello e teteaneng ea HEC e eketsa viscosity ea pente ea latex, e ka khonang ho hasanya likaroloana tsa pigment hantle le ho qoba ho kopana ha pigment kapa pula. Haholo-holo bakeng sa likaroloana tse ling tse ntle tsa pigment, sebopeho sa polymer sa HEC se ka phuthela holim'a pigment ho thibela ho kopana ha likaroloana tsa pigment, kahoo ho ntlafatsa ho hasana ha pigment le ho tšoana ha pente.
Matla a tlamang pakeng tsa pigment le filimi ea ho roala:HEClimolek'hule li ka hlahisa ponahalo ea 'mele kapa ketso ea lik'hemik'hale ka holim'a pigment, ea ntlafatsa matla a tlamang pakeng tsa pigment le filimi ea ho roala,' me ea qoba ts'ebetso ea ho phatloha ha pigment kapa ho fifala holim'a filimi ea ho roala. Haholo-holo ka pente e phahameng ea latex, HEC e ka ntlafatsa ka katleho ho hanyetsa boemo ba leholimo le ho hanyetsa UV ea pigment le ho atolosa bophelo ba tšebeletso ea ho roala.
4. Tšebelisano pakeng tsa HEC le li-fillers
Li-fillers tse ling (tse kang calcium carbonate, phofo ea talcum, liminerale tsa silicate, joalo-joalo) hangata li kenngoa ho pente ea latex ho ntlafatsa rheology ea pente, ho ntlafatsa matla a ho pata filimi ea ho roala le ho eketsa litšenyehelo tsa pente. Tšebelisano pakeng tsa HEC le li-fillers e bonahala likarolong tse latelang:
Ho emisoa ha li-fillers: HEC e ka boloka li-filler li eketsoa ho pente ea latex sebakeng sa ho qhalakanngoa ha junifomo ka phello ea eona e teteaneng, ho thibela li-filler ho rarolla. Bakeng sa li-filler tse nang le boholo bo boholo ba likaroloana, phello e teteaneng ea HEC ke ea bohlokoa ka ho khetheha, e ka bolokang botsitso ba pente ka katleho.
Gloss le touch of the coating: Ho eketsoa ha li-fillers hangata ho ama gloss le ho ama ha seaparo. AnxinCel®HEC e ka ntlafatsa ts'ebetso ea ponahalo ea ho roala ka ho fetola kabo le tokisetso ea li-fillers. Ka mohlala, ho qhalakanngoa ha junifomo ea likaroloana tsa li-filler ho thusa ho fokotsa ho hlaka ha bokaholimo ba ho roala le ho ntlafatsa ho bata le ho phatsima ha filimi ea pente.
5. Tšebelisano pakeng tsa HEC le li-additives tse ling
Foromo ea pente ea latex e boetse e kenyelletsa li-additives tse ling, tse kang defoamers, preservatives, wetting agents, joalo-joalo. Li-additives tsena li ka sebelisana le HEC ha li ntse li ntlafatsa ts'ebetso ea pente:
Tšebelisano pakeng tsa li-defoamers le HEC: Mosebetsi oa li-defoamers ke ho fokotsa li-bubble kapa foam ka pente, 'me litšobotsi tse phahameng tsa viscosity tsa HEC li ka ama phello ea li-defoamers. HEC e feteletseng e ka 'na ea etsa hore ho be thata hore defoamer e tlose foam ka ho feletseng, kahoo e ama boleng ba bokaholimo ba pente. Ka hona, palo ea HEC e ekelitsoeng e hloka ho hokahanngoa le palo ea defoamer ho finyella phello e ntle ka ho fetisisa.
Tšebelisano pakeng tsa li-preservatives le HEC: Karolo ea li-preservative ke ho thibela ho hōla ha likokoana-hloko ka pente le ho eketsa nako ea polokelo ea pente. Joaloka polima ea tlhaho, sebopeho sa limolek'hule tsa HEC se ka sebelisana le li-preservatives tse itseng, tse amang phello ea eona e khahlanong le kutu. Ka hona, ho bohlokoa ho khetha sebatli se lumellanang le HEC.
Karolo eaHECka pente ea latex ha e tenyetsehe feela, empa ho sebelisana ha eona le li-emulsions tsa polymer, li-pigments, li-fillers le li-additives tse ling ka kopanelo ho etsa qeto ea ts'ebetso ea pente ea latex. AnxinCel®HEC e ka ntlafatsa thepa ea rheological ea pente ea latex, ea ntlafatsa ho qhalana ha li-pigment le li-fillers, le ho ntlafatsa thepa ea mochine le ho tšoarella ha seaparo. Ho phaella moo, phello ea synergistic ea HEC le li-additives tse ling li boetse li na le tšusumetso ea bohlokoa ho boloka botsitso, ts'ebetso ea kaho le ponahalo ea ho roala ha pente ea latex. Ka hona, ha ho etsoa moralo oa pente ea latex, khetho e utloahalang ea mofuta oa HEC le palo ea ho eketsoa le ho leka-lekana ha ho sebelisana ha eona le lisebelisoa tse ling ke senotlolo sa ho ntlafatsa tshebetso e akaretsang ea pente ea latex.
Nako ea poso: Dec-28-2024