1. Dhumucda aan dabiiciga ahayn
Tan ugu badan ee la isticmaalo waa bentonite dabiici ah, oo qaybtiisa ugu weyni tahay montmorillonite. Qaab-dhismeedkeeda gaarka ah ee lamellar wuxuu siin karaa dahaarka leh pseudoplasticity xooggan, thixotropy, xasillooni la'aan iyo dufan. Mabda'a dhumucda ayaa ah in budada ay nuugto biyaha oo ay bararto si ay u qariso wejiga biyaha, sidaas darteed waxay leedahay haynta biyaha qaarkood.
Qasaarooyinka waa: socodka oo liita iyo waxqabadka siman, ma fududa in la kala firdhiyo oo la isku daro.
2. Cellulose
Kuwa ugu badan ee la isticmaalo waa hydroxyethyl cellulose (oo ay ku jiraan hydroxyethyl cellulose).HEC), kaas oo leh hufnaan sare oo dhumuc leh, ganaax wanaagsan, kala firdhis iyo sifooyin haynta biyaha, inta badan si loo adkeeyo wejiga biyaha.
Qasaarooyinka waa: saameynta iska caabbinta biyaha ee dahaarka, waxqabadka ka hortagga caaryada oo aan ku filnayn, iyo waxqabadka heerka oo liita.
3. Acrylic
Dhumuceeyayaasha akrilik guud ahaan waxay u qaybsan yihiin laba nooc: Dhumuceeyayaasha akrilik-swellable acrylic (ASE) iyo Dhumuceeyayaasha alkali-swellable associative (HASE).
Mabda'a dhumucda ee asiidhka acrylic acid thickener alkali-smellable (ASE) waa in la kala saaro carboxylate marka pH-ga loo hagaajiyo alkaline, si silsiladda molecular-ka looga fidiyo helical ilaa ul iyada oo loo marayo isotropic electrostatic repulsion u dhexeeya carboxylate ions, taasoo hagaajinaysa viscosity-ga wejiga biyaha. Noocan dhumucda ah wuxuu sidoo kale leeyahay hufnaan dhumuc sare leh, pseudoplasticity xooggan iyo ganaax wanaagsan.
Dhumucda alkali-bararka ee isku-xidhan (HASE) waxay soo bandhigtaa kooxo hydrophobic ah iyadoo lagu saleynayo dhumucda alkali-bararka caadiga ah (ASE). Sidoo kale, marka pH-ka loo hagaajiyo alkaline, isku-dhafka electrostatic-ka ee u dhexeeya ion-yada carboxylate wuxuu sameeyaa Silsiladda molecular-ka waxay ka fidsan tahay qaab helical ah ilaa qaab ul ah, taasoo kordhisa dhuuqsanaanta wejiga biyaha; kooxaha hydrophobic-ka ee lagu soo bandhigay silsiladda ugu weyn waxay la xiriiri karaan walxaha latex-ka si loo kordhiyo dhuuqnaanta wejiga emulsion-ka.
Qasaarooyinka waa: xasaasiyad ku leh pH, socodka aan ku filnayn iyo heerka rinjiga, si fudud loo dhumuc karo ka dib.
4. Polyurethane
Dhuxul-dhajiye isku-xidhan oo Polyurethane ah (HEUR) waa polymer-ka biyaha ku milma ee polyurethane oo si hydrophobic ah loo beddelay, kaas oo ka tirsan dhumuc-dhajiye aan ionic ahayn. Waxay ka kooban tahay saddex qaybood: saldhigga hydrophobic, silsiladda hydrophilic iyo saldhigga polyurethane. Saldhigga polyurethane wuxuu ku fidaa xalka rinjiga, silsiladda hydrophilic-na waa mid deggan marxaladda biyaha. Saldhigga hydrophobic-ga wuxuu la xiriiraa qaab-dhismeedka hydrophobic-ga sida walxaha latex-ka ah, surfactants-ka, iyo midabada., iyagoo samaynaya qaab-dhismeed shabakad saddex-geesood ah, si loo gaaro ujeeddada dhumucda.
Waxaa lagu gartaa dhumucda wejiga emulsion-ka, socodka aadka u fiican iyo waxqabadka heerka, hufnaanta dhumucda wanaagsan iyo kaydinta viscosity deggan, iyo xaddid la'aanta pH; waxayna leedahay faa'iidooyin cad oo ku saabsan iska caabbinta biyaha, dhalaalka, hufnaanta, iwm.
Qasaarooyinka waa: nidaamka dhexdhexaadka ah iyo kan hooseeya, saameynta ka hortagga degitaanka budada ma fiicna, saameynta dhumucduna si fudud ayay u saameysaa kala firdhiyeyaasha iyo dareerayaasha.
Waqtiga boostada: Diseembar-29-2022