Thickener ke mofuta o khethehileng oa tlatsetso ea rheological, mosebetsi oa eona o ka sehloohong ke ho eketsa viscosity ea mokelikeli oa pente, ho ntlafatsa ts'ebetso ea polokelo, ts'ebetso ea kaho le phello ea filimi ea pente ea pente.
Karolo ea li-thickeners ka ho roala
tenya
Khahlanong le ho rarolla
Ha e kenele metsi
Anti-sagging
Anti shrinkage
Ntlafatsa ts'ebetso ea ho hasana
Ntlafatsa tshebetso ya kaho
Eketsa botenya ba filimi ea pente
Ntlafatsa phello ea bokaholimo
Litšobotsi tsa li-thickeners tse fapaneng
1. Inorganic thickener
E sebelisoang ka ho fetisisa ke organic bentonite, eo karolo ea eona e ka sehloohong e leng montmorillonite.Sebopeho sa eona se khethehileng sa lamellar se ka fana ka seaparo se nang le pseudoplasticity e matla, thixotropy, botsitso ba ho emisa le lubricity.Molao-motheo oa ho teteka ke hore phofo e monya metsi le ho ruruha ho tiisa karolo ea metsi, kahoo e na le ho boloka metsi ho itseng.
Mefokolo ke: phallo e mpe le ts'ebetso ea boemo bo holimo, ha ho bonolo ho hasanya le ho eketsa.
2. Cellulose ether
E sebelisoang haholo kehydroxyethyl cellulose(HEC), e nang le ts'ebetso e phahameng ea ho tenya, ho emisoa hantle, ho hasana le thepa ea ho boloka metsi, haholo-holo bakeng sa ho tiisa karolo ea metsi.
Mefokolo ke: e amang ho hanyetsa ha metsi ha ho koaheloa, ts'ebetso e sa lekaneng ea anti-mold, le ts'ebetso e mpe ea boemo.
3. Acrylic
Acrylic thickeners ka kakaretso li arotsoe ka mefuta e 'meli: acrylic alkali-swellable thickeners (ASE) le associative alkali-swellable thickeners (HASE).
Molao-motheo o teteaneng oa acrylic acid alkali-swellable thickener (ASE) ke ho arola carboxylate ha pH e fetoloa ho alkaline, e le hore ketane ea molek'hule e otlolloe ho tloha ho helical ho ea molamu ka ho repulsion ea electrostatic ea bong bo tšoanang pakeng tsa li-ion tsa carboxylate. , ho ntlafatsa The viscosity ea mokhahlelo oa metsi.Mofuta ona oa thickener o boetse o na le ts'ebetso e phahameng ea ho tenya, pseudoplasticity e matla le ho emisoa ho hotle.
The associative alkali-swellable thickener (HASE) e hlahisa lihlopha tsa hydrophobic motheong oa li-alkali-swellable thickeners tse tloaelehileng (ASE).Ka mokhoa o ts'oanang, ha pH e fetoloa ho alkaline, ho ts'oaroa ha electrostatic ea bong bo tšoanang pakeng tsa li-ion tsa carboxylate ho etsa hore ketane ea molek'hule e fetele ho tloha ho sebopeho sa helical ho ea ho sebopeho sa molamu, se eketsang viscosity ea karolo ea metsi;'me lihlopha tsa hydrophobic tse hlahisitsoeng ketane e kholo li ka amahanngoa le likaroloana tsa latex ho eketsa viscosity ea mohato oa emulsion.
Mefokolo ke: ho nahanela pH, phallo e sa lekaneng le boemo ba filimi ea pente, ho bonolo ho teteana ka morao.
4. Polyurethane
Polyurethane associative thickener (HEUR) ke hydrophobically modified ethoxylated polyurethane water-soluble polymer, eo e leng ea non-ionic associative thickener.E na le likarolo tse tharo: hydrophobic base, hydrophilic chain le polyurethane base.Setsi sa polyurethane se atoloha ka tharollo ea pente, 'me ketane ea hydrophilic e tsitsitse karolong ea metsi.Motheo oa hydrophobic o amahanngoa le meaho ea hydrophobic joalo ka likaroloana tsa latex, li-surfactants le li-pigments., ho etsa sebopeho sa marang-rang a mararo, e le ho finyella morero oa ho teteka.
E khetholloa ka ho teteka ha mohato oa emulsion, phallo e babatsehang le ts'ebetso ea boemo bo holimo, ts'ebetso e ntle ea ho teteka le ho boloka viscosity e tsitsitseng, 'me ha ho na moeli oa pH;'me e na le melemo e totobetseng ea ho hanyetsa metsi, gloss, ponaletso, joalo-joalo.
Mefokolo ke: tsamaisong e bohareng le e tlaase ea viscosity, phello e khahlanong le ho rarolla phofo ha e ntle, 'me phello e teteaneng e ameha habonolo ke li-dispersants le solvents.
Nako ea poso: Dec-12-2022