nkhani

Dispersant ndi chinthu chogwira ntchito pakati pa zinthu ziwiri zomwe zimakhala ndi mawonekedwe osiyana a lipophilicity ndi hydrophilicity mkati mwa molekyulu.

Kufalikira kumatanthauza kusakaniza komwe kumapangidwa ndi kufalikira kwa chinthu chimodzi (kapena zinthu zingapo) kupita ku chinthu china monga tinthu tating'onoting'ono.

Zosakaniza zimatha kufalitsa mofanana tinthu tolimba ndi tamadzimadzi ta utoto wa inorganic ndi organic womwe ndi wovuta kusungunuka mu zakumwa, komanso kuletsa kusungunuka ndi kusungunuka kwa tinthu tating'onoting'ono, ndikupanga ma reagents ofunikira kuti timitseke bwino. Kafukufuku ndi Kupititsa patsogolo kwa mankhwala a Houhuan ndi kupanga zowonjezera zochokera m'madzi ndi zowonjezera zochokera ku mafuta m'mafakitale osiyanasiyana, magulu okhudzana ndi surfactant.

Dongosolo logawanitsa limagawidwa m'magulu awiri: yankho, colloid ndi suspension (emulsion). Pa yankho, solute ndi dispersant ndipo solvent ndi dispersant. Mwachitsanzo, mu yankho la NaCl, dispersant ndi NaCl, ndipo dispersant ndi madzi. Dispersant imatanthauza zinthu zomwe zimafalikira mu tinthu tating'onoting'ono mu dongosolo logawanitsa. Chinthu china chimatchedwa dispersed substance.

Ntchito zogwiritsira ntchito dispersant ya pigment ya mafakitale ndi izi:

1. Gwiritsani ntchito chonyowetsa madzi kuti muchepetse nthawi ndi mphamvu zomwe zimafunika kuti mumalize njira yofalitsira, kukhazikika kwa kufalikira kwa utoto wobalalika, cholimbikitsira kumatirira kwa PP, kusintha mawonekedwe a pamwamba pa tinthu ta utoto, ndikusintha kuyenda kwa tinthu ta utoto.

2. Chepetsani kupsinjika pakati pa madzi ndi madzi olimba. Ma dispersants nawonso ndi ma surfactants. Ma dispersants ndi anionic, cationic, non-ionic, amphoteric ndi polymeric. Pakati pawo, mtundu wa anionic umagwiritsidwa ntchito kwambiri.

3. Chotulutsira madzi chothandizira chomwe chingathandize kuti zinthu zolimba kapena zamadzimadzi zisamafalikire.