Ultrafine pigment hmoov yog muab faib ua cov organic pigments thiab inorganic pigments, organic pigments feem ntau muab faib ua azo pigments, pas dej pigments, heterocyclic pigments, tuab nplhaib ketone pigments, phthalocyanine pigments thiab lwm yam pigments. Inorganic pigments feem ntau muab faib ua titanium dioxide, carbon dub, hlau oxide liab, thiab lwm yam Organic los yog inorganic pigments muaj cov xim ci, xim muaj zog, siab xim zog thiab siab transparency, uas ua tau raws li cov kev cai ntawm coatings thiab luam ntawv inks.
Txawm li cas los xij, nyob rau hauv tus txheej txheem ntawm kev npaj pigment hmoov, lub finer particle loj, nto ntawm pigment hmoov yuav nce, uas yuav yooj yim ua rau agglomeration, ua loj hais, xim thiab number case system instability, heev cuam tshuam rau cov khoom zoo.
Lub sijhawm no, cov organic ammonium ntsev dispersant yuav tsum tau ntxiv rau cov txheej txheem pigment crushing, pigment dispersant nyob rau hauv cov xim paste system, feem ntau adsorb rau saum npoo ntawm cov hmoov, txo lub zog saum npoo ntawm ultrafine pigment hais, kom ua tau zoo dispersion nyhuv, thiab organic ammonium ntsev dispersant tuaj yeem tiv thaiv flocculation rov qab mus rau ntxhib kev sib haum xeeb ntab xim plaub hau. Zoo compatibility nrog xim thiab luam ntawv number case los txhim kho xim rendering kev ua tau zoo.
Vim li casDispersing agent NNOua hauj lwm?
CovDispersing agent NNOmolecule muaj ib pawg thauj tog rau nkoj thiab ib feem stabilizing. Lub luag haujlwm ntawm pawg anchoring yog los muab lub zog txaus los khi rau cov xim pleev xim rau cov khoom. Dispersant molecules tsis poob ntawm qhov chaw ntawm cov khoom, uas yog qhov yuav tsum tau ua ua ntej rau dispersant ua haujlwm. Lub luag haujlwm ntawm stabilizing ib feem yog kom stabilize cov pigment aggregate particles dispersed los ntawm txhua yam quab yuam los ntawm electrostatic repulsion thiab spatial tsis kam nyob rau hauv cov kua theem los tiv thaiv cov hais los ntawm aggregating.
Nyob rau hauv cov kuab tshuaj organic, thaum qhov ruaj khov ntawm cov dispersant stabilizes dispersed pigment hais los ntawm spatial tsis kam, thaum qhov sib nrug ntawm qhovDispersing agent NNOcov khoom yog me dua qhov loj ntawm cov kuab chains, cov kuab chains sib sib zog nqus thiab cov entropy txo. Hauv dej, ionization tshwm sim nyob ib puag ncig ionic pawg los tsim ob txheej txheej, thiab electrostatic repulsion tiv thaiv particle agglomeration. Yog tias tsis yog-ionized polyether ruaj khov, polyether stabilizes dispersed pigment hais los ntawm spatial kuj.
Post lub sij hawm: May-19-2022