1. Isithambisi esingadalwanga
Eyona isetyenziswa kakhulu yi-organic bentonite, eyona nto iphambili yi-montmorillonite. Isakhiwo sayo esikhethekileyo se-lamellar sinokunika i-pseudoplasticity enamandla, i-thixotropy, uzinzo lokumiswa kunye nokuthambisa. Umgaqo wokuqina kukuba umgubo ufunxa amanzi kwaye uvuvuke ukuze ujiye isigaba samanzi, ngoko ke unokugcinwa kwamanzi okuthile.
Izinto ezingalunganga zezi: ukuhamba kakuhle kombane kunye nokusebenza kakuhle kokulinganisa, akukho lula ukusasaza nokongeza.
2. Iseli
Eyona isetyenziswa kakhulu yi-hydroxyethyl cellulose (I-HEC), enobuchule obuphezulu bokujiya, ukumiswa kakuhle, ukusasazeka kunye neempawu zokugcina amanzi, ikakhulu ukwenzela ukujiya kwesigaba samanzi.
Izinto ezingalunganga zezi: ukuchaphazela ukumelana kwamanzi kwengubo, ukusebenza okungonelanga kokulwa nokungunda, kunye nokusebenza okungalunganga kokulinganisa.
3. I-Acrylic
Izithambisi ze-acrylic ngokubanzi zahlulwe zibe ziintlobo ezimbini: izithambisi ze-acrylic alkali-swellable thickeners (ASE) kunye nezithambisi ze-alkali-swellable associated (HASE).
Umgaqo wokutyeba we-acrylic acid alkali-swellable thickener (ASE) kukuhlukanisa i-carboxylate xa i-pH ihlengahlengiswa kwi-alkaline, ukuze i-molecular chain yolulwe ukusuka kwi-helical ukuya kwi-rod ngokusebenzisa i-isotropic electrostatic repulsion phakathi kwee-ion ze-carboxylate, nto leyo ephucula i-viscosity ye-aqueous phase. Olu hlobo lwe-thickener lukwanokusebenza okuphezulu kokutyeba, i-pseudoplasticity enamandla kunye ne-suspension elungileyo.
I-associative alkali-swellable thickener (HASE) ingenisa amaqela e-hydrophobic ngokusekelwe kwi-alkali-swellable thickeners eziqhelekileyo (ASE). Ngokufanayo, xa i-pH ihlengahlengiswa kwi-alkaline, ukugxothwa kwe-electrostatic yesini esinye phakathi kwee-ion ze-carboxylate kwenza i-molecular chain isuke kwi-helical shape iye kwi-rod shape, nto leyo eyandisa i-viscosity yesigaba samanzi; kwaye amaqela e-hydrophobic angeniswe kwi-main chain anokudibana nama-latex particles ukwandisa i-viscosity yesigaba se-emulsion.
Izinto ezingalunganga zezi: ubuthathaka kwi-pH, ukuhamba kwamanzi okunganelanga kunye nokulingana kwefilimu yepeyinti, kulula ukuyijiya emva koko.
4. I-Polyurethane
I-Polyurethane associative thickener (HEUR) yi-polymer enyibilikayo emanzini e-polyurethane eguquguqukayo ngamanzi, eyinxalenye ye-non-ionic associative thickener. Iqulathe amacandelo amathathu: isiseko se-hydrophobic, i-hydrophilic chain kunye nesiseko se-polyurethane. Isiseko se-polyurethane siyanda kwisisombululo sepeyinti, kwaye i-hydrophilic chain izinzile kwisigaba samanzi. Isiseko se-hydrophobic sinxulumana nezakhiwo ze-hydrophobic ezifana nee-latex particles, ii-surfactants, kunye nee-pigments. , zenza isakhiwo senethiwekhi esinemilinganiselo emithathu, ukuze kufezekiswe injongo yokuqina.
Ibonakala ngokutyeba kwesigaba se-emulsion, ukuhamba kakuhle kunye nokusebenza kakuhle kokulinganisa, ukusebenza kakuhle kokuqina kunye nokugcinwa okuzinzileyo kwe-viscosity, kwaye akukho mda we-pH; kwaye ineenzuzo ezicacileyo zokumelana namanzi, ukuqaqamba, ukucaca, njl.njl.
Izinto ezingalunganga zezi: kwinkqubo ye-viscosity ephakathi nephantsi, isiphumo sokulwa nokuqina kwi-powder asilungile, kwaye isiphumo sokutyeba sichaphazeleka lula zi-dispersants kunye nezinyibilikisi.
Ixesha lokuthumela: Disemba-29-2022