1. Isithambisi esingakhiqizi izinto eziphilayo
Esetshenziswa kakhulu yi-organic bentonite, ingxenye yayo eyinhloko yi-montmorillonite. Isakhiwo sayo esikhethekile se-lamellar singanikeza ungqimba oluqinile lwe-pseudoplasticity, i-thixotropy, ukuqina kokumiswa kanye nokuthambisa. Isimiso sokujiya ukuthi i-powder imunca amanzi futhi ivuvuke ukuze ijiye isigaba samanzi, ngakho-ke inokugcinwa kwamanzi okuthile.
Okubi yilezi: ukugeleza okungekuhle kanye nokusebenza kahle kokulinganisa, akulula ukuhlakaza nokungeza.
2. I-Cellulose
Esetshenziswa kakhulu yi-hydroxyethyl cellulose (I-HEC), enekhono eliphezulu lokujiya, ukumiswa okuhle, ukuhlakazeka kanye nezakhiwo zokugcina amanzi, ikakhulukazi ukuze iqine isigaba samanzi.
Okubi yilezi: ukuthinta ukumelana kwamanzi kwesembozo, ukusebenza okwanele kokulwa nesikhunta, kanye nokusebenza okungekuhle kokuleveli.
3. I-Acrylic
Ama-thickeners e-Acrylic ngokuvamile ahlukaniswe ngezinhlobo ezimbili: ama-thickeners e-alkali-swellable thickeners (ASE) kanye nama-thickeners e-alkali-swellable associate (HASE).
Umgomo wokujiya we-acrylic acid alkali-swellable thickener (ASE) ukuhlukanisa i-carboxylate lapho i-pH ilungiswa ibe yi-alkaline, ukuze uchungechunge lwama-molecule lunwetshwe lusuka ku-helical luye entongeni ngokusebenzisa i-isotropic electrostatic repulsion phakathi kwama-ion e-carboxylate, okuthuthukisa i-viscosity yesigaba samanzi. Lolu hlobo lwe-thickener luphinde lube nokusebenza kahle kokujiya okuphezulu, i-pseudoplasticity eqinile kanye nokumiswa okuhle.
I-associative alkali-swellable thickener (HASE) yethula amaqembu angenawo umoya ngesisekelo se-alkali-swellable thickeners evamile (ASE). Ngokufanayo, lapho i-pH ilungiswa ibe yi-alkaline, ukuxoshwa kwe-electrostatic yobulili obufanayo phakathi kwama-ion e-carboxylate kwenza i-molecule chain isuke esimweni se-helical iye esimweni senduku, okwandisa i-viscosity yesigaba samanzi; futhi amaqembu angenawo umoya angeniswa ku-main chain angahlotshaniswa nezinhlayiya ze-latex ukwandisa i-viscosity yesigaba se-emulsion.
Okubi yilezi: ukuzwela ku-pH, ukugeleza okunganele kanye nokulingana kwefilimu yopende, okulula ukuyijiya ngemva kwalokho.
4. I-Polyurethane
I-polyurethane associative thickener (HEUR) iyi-polymer encibilikayo emanzini e-polyurethane eguquguqukayo emanzini e-ethoxylated, engeye-non-ionic associative thickener. Yakhiwe izingxenye ezintathu: isisekelo se-hydrophobic, uchungechunge lwe-hydrophilic kanye nesisekelo se-polyurethane. Isisekelo se-polyurethane siyanda esixazululweni sopende, kanti uchungechunge lwe-hydrophilic luzinzile esigabeni samanzi. Isisekelo se-hydrophobic sihlotshaniswa nezakhiwo ze-hydrophobic ezifana nezinhlayiya ze-latex, ama-surfactants, kanye nama-pigment. , okwakha isakhiwo senethiwekhi esinezinhlangothi ezintathu, ukuze kufezwe injongo yokuqina.
Ibonakala ngokujiya kwesigaba se-emulsion, ukusebenza kahle kokugeleza nokulinganisa, ukusebenza kahle kokujiya kanye nokugcinwa kwe-viscosity okuzinzile, kanye nokungabikho komkhawulo we-pH; futhi inezinzuzo ezisobala ekumelaneni namanzi, ukucwebezela, ukucaca, njll.
Okubi yilezi: ohlelweni lwe-viscosity oluphakathi noluphansi, umphumela wokulwa nokuxazulula i-powder awumuhle, futhi umphumela wokujiya uthintwa kalula yizihlakaza kanye nezincibilikisi.
Isikhathi sokuthunyelwe: Disemba-29-2022