Ultrafine pigment ufa amagawanika kukhala inki organic ndi inorganic pigments, organic inki makamaka anawagawa azo inki, nyanja inki, heterocyclic inki, wandiweyani mphete ketone inki, phthalocyanine inki ndi zina inki. Inorganic inki makamaka anawagawa titaniyamu woipa, mpweya wakuda, chitsulo okusayidi wofiira, etc. Organic kapena inorganic inki ndi mitundu yowala, mkulu mitundu mphamvu, mkulu mtundu mphamvu ndi mkulu mandala, amene amakwaniritsa zofunika zokutira ndi inki kusindikiza.
Komabe, pokonzekera ufa wa pigment, kukula kwa tinthu tating'onoting'ono, pamwamba pa utoto wa pigment kudzawonjezeka, zomwe zingapangitse kuti agglomeration, apange particles zazikulu, utoto ndi inki kusakhazikika, zomwe zimakhudza kwambiri khalidwe la mankhwala.
Panthawi imeneyi, organic ammonium mchere dispersant chofunika kuwonjezera kwa pigment kuphwanya ndondomeko, pigment dispersant mu pigment phala dongosolo, makamaka adsorb pamwamba pa ufa, kuchepetsa pamwamba mphamvu ya ultrafine pigment particles, kukwaniritsa yunifolomu kubalalitsidwa kwenikweni, ndi organic ammonium mchere dispersant angathe kuteteza flocculation kubwerera coarse kuthetsa zoyandama mtundu tsitsi. Kugwirizana bwino ndi utoto ndi inki yosindikiza kuti muwongolere magwiridwe antchito amtundu.
Chifukwa chiyani?Dispersing wothandizira NNOntchito?
TheDispersing wothandizira NNOmolekyulu ili ndi gulu la nangula ndi gawo lokhazikika. Ntchito ya gulu loyikirapo ndikupereka mphamvu zokwanira zomangira ma pigment filler particles. Ma molekyulu a dispersant samagwa pamwamba pa tinthu tating'onoting'ono, zomwe ndizofunikira kuti dispersant agwire ntchito. Ntchito ya okhazikika mbali ndi kukhazikika pigment akaphatikiza particles omwazika ndi makina mphamvu kudzera electrostatic repulsion ndi malo kukana mu madzi gawo kuteteza particles ku aggregating.
Mu zosungunulira za organic, pamene gawo lokhazikika la dispersant limakhazikika ndi omwazika pigment particles ndi malo kukana, pamene katayanitsidwe waDispersing wothandizira NNOparticles ndi ang'onoang'ono kuposa kukula kwa unyolo zosungunulira, unyolo zosungunulira kufinya wina ndi mzake ndi entropy amachepetsa. M'madzi, ionization imapezeka mozungulira magulu a ionic kupanga wosanjikiza wapawiri, ndipo electrostatic repulsion imalepheretsa tinthu tating'onoting'ono. Ngati polyether yopanda ionized ndi yokhazikika, polyether imakhazikika mabala a pigment omwazika ndi kukana kwamalo.
Nthawi yotumiza: May-19-2022