nkhani

Dispersant imatchedwanso chonyowetsa ndi dispersing wothandizira.Kumbali imodzi, imakhala ndi mphamvu yonyowetsa, kumbali ina, mbali imodzi ya gulu lake yogwira imatha kudyedwa pamwamba pa pigment yophwanyidwa kukhala tinthu tating'onoting'ono, ndipo mapeto enawo amasungunulidwa m'munsi kuti apange wosanjikiza wa adsorption ( magulu ambiri adsorption, utali wa unyolo, ndi wokhuthala ndi adsorption wosanjikiza) kutulutsa chiwopsezo (utoto wotengera madzi) kapena entropy repulsion (utoto wosungunulira), kotero kuti tinthu tating'ono ta pigment titha kumwazikana ndikuyimitsidwa mu utoto. nthawi yayitali kuti mupewe flocculation kachiwiri.Izi zimatsimikizira kukhazikika kosungirako kwa dongosolo la utoto.
 
Mitundu yodziwika bwino ya dispersants.
1.Anionic wetting ndi dispersing wothandizira
Ambiri a iwo amapangidwa si polar, zoipa mlandu hydrocarbon unyolo ndi polar hydrophilic gulu.Magulu awiriwa ali kumapeto kwa molekyulu, kupanga asymmetric hydrophilic ndi oleophilic molecular structure.Mitundu yake ndi: sodium oleate C17H33COONa, carboxylate, sulfate (RO-SO3Na), sulfonate (R-SO3Na), etc. Kugwirizana kwa anionic dispersants ndi abwino, ndipo ma polima a polycarboxylic acid, ndi zina zotero angagwiritsidwe ntchito pa zokutira zosungunulira. ndipo amagwiritsidwa ntchito kwambiri ngati dispersants olamulidwa amtundu wa flocculation.

2.Cationic wetting ndi dispersing wothandizira
Iwo sanali polar m'munsi zabwino mlandu mankhwala, makamaka mchere mchere, quaternary mchere mchere, pyridinium mchere, etc. cationic surfactants ndi amphamvu adsorption mphamvu ndi bwino kubalalitsidwa kwambiri mpweya wakuda, zosiyanasiyana chitsulo oxides ndi organic inki, koma tisaiwale. kuti amachitira mankhwala ndi gulu la carboxyl muzinthu zoyambira, komanso dziwani kuti sayenera kugwiritsidwa ntchito nthawi imodzi ndi dispersants anionic.

3.Controlled free radical type hyperdispersant
Chachiwiri, udindo wa dispersant
1.Kupititsa patsogolo gloss ndi kuonjezera zotsatira zowonongeka.
2.Kuletsa mtundu woyandama ndi maluwa.
3.Kupititsa patsogolo mphamvu ya utoto.
4.Reduce viscosity ndi kuwonjezera pigment loading.
5.Reduce flocculation, kuwonjezera constructability ndi usability.
6.Prevent recoarse ndikuwonjezera kukhazikika kosungirako.
7.Onjezani kufalikira kwa mtundu ndi kudzaza kwamtundu.
8.Kuwonjezera kuwonekera kapena kuphimba mphamvu.
9.Kupititsa patsogolo kugaya bwino ndikuchepetsa mtengo wopanga.
10.Pewani kukhazikika.