izindaba

I-Disperant ibizwa nangokuthi i-ejenti yokumanzisa ne-dispersing.Ngakolunye uhlangothi, inomphumela wokumanzisa, ngakolunye uhlangothi, ingxenye eyodwa yeqembu layo elisebenzayo ingakhangiswa ebusweni be-pigment echotshoziwe ibe izinhlayiya ezinhle, kanti enye igcina ixazululwe ibe yisisekelo ukuze kwakhiwe ungqimba lwe-adsorption ( amaqembu e-adsorption engeziwe, uma i-chain link, i-adsorption layer ibe yinde, iba nkulu ungqimba lwe-adsorption) ukuze kukhiqizwe i-charge repulsion (upende osuselwe emanzini) noma i-entropy repulsion (upende osuselwa ekuncibilikeni), ukuze izinhlayiya ze-pigment zihlakazeke futhi zimiswe kupende ukuze isikhathi eside ukugwema i-flocculation futhi.Lokhu kuqinisekisa ukuzinza kwesitoreji sesistimu kapende.
 
Izinhlobo ezisetshenziswa kakhulu zokusabalalisa.
1.I-anionic yokumanzisa ne-ejenti ehlakazayo
Iningi lazo lakhiwe ngamaketango angewona ama-polar, akhokhiswa kabi i-hydrocarbon kanye neqembu le-polar hydrophilic.La maqembu amabili asemikhawulweni emibili ye-molecule, enza i-asymmetric hydrophilic kanye ne-oleophilic molecular structure.Izinhlobo zayo yilezi: i-sodium oleate C17H33COONa, i-carboxylate, i-sulfate (RO-SO3Na), i-sulfonate (R-SO3Na), njll. Ukuhambisana kwama-anionic dispersants kuhle, nama-polycarboxylic acid polymers, njll. futhi isetshenziswa kabanzi njengama-dispersants ohlobo lwe-flocculation.

2.Cationic wetting and dispersing agent
Ziyizinhlanganisela ezingezona ze-polar ezine-positive charged compounds, ikakhulukazi ama-amine salts, ama-quaternary amine salts, ama-pyridinium salts, njll. Ama-surfactants e-Cationic anamandla okukhangisa anamandla futhi anomphumela ongcono wokuhlakazeka ku-carbon black, i-iron oxide ehlukahlukene kanye ne-organic pigments, kodwa kufanele kuqashelwe. ukuthi basabela ngamakhemikhali neqembu le-carboxyl ku-base material, futhi baqaphele ukuthi akufanele basetshenziswe ngesikhathi esisodwa nama-anionic dispersants.

I-3.I-hyperdispersant elawulwayo yamahhala yohlobo lwe-radical
Okwesibili, indima yokuhlakaza
1.Thuthukisa isicwebezelisi futhi ukwandise umphumela wokulinganisa.
2.Vimbela umbala ontantayo nokuqhakaza.
3.Thuthukisa amandla ombala.
4.Yehlisa i-viscosity futhi ukwandise ukulayishwa kwe-pigment.
5.Yehlisa i-flocculation, khulisa ukwakheka nokusebenziseka.
6.Vimbela ukuphindaphinda futhi ukhulise ukuqina kwesitoreji.
7.Khulisa ukusabalala kombala kanye nokugcwala kombala.
8.Khulisa ukukhanya noma amandla okuvala.
9.Thuthukisa ukusebenza kahle kokugaya futhi unciphise izindleko zokukhiqiza.
10.Vimbela ukuzinza.