Dispersible polymer phofo le tse ling tse binders inorganic (tse kang samente, slaked kalaka, gypsum, joalo-joalo) le aggregates tse fapa-fapaneng, fillers le additives tse ling (tse kang methyl hydroxypropyl cellulose ether, starch ether, lignocellulose, hydrophobic Agents, joalo-joalo) li tsoakane 'meleng ho etsa seretse se omeletseng. Ha seretse se omeletseng se kopantsoeng le metsi, tlas'a ketso ea hydrophilic protective colloid le ho kuta ka mechine, likaroloana tsa phofo tsa latex li tla hasana ka metsing.
Ka lebaka la litšobotsi tse fapaneng le ho fetoloa ha phofo e 'ngoe le e' ngoe e arohaneng ea latex, phello ena e boetse e fapane, tse ling li na le phello ea ho khothalletsa phallo, ha tse ling li na le phello ea ho eketseha ha thixotropy. Mokhoa oa ts'usumetso ea eona o tsoa likarolong tse ngata, ho kenyelletsa le tšusumetso ea phofo ea latex mabapi le kamano ea metsi nakong ea ho hasana, tšusumetso ea li-viscosity tse fapaneng tsa phofo ea latex ka mor'a ho qhalakanngoa, tšusumetso ea colloid e sireletsang, le tšusumetso ea samente le lebanta la metsi. Tšusumetso ea lintlha tse latelang e kenyelletsa tšusumetso ea ho eketseha ha moea oa seretse le ho ajoa ha li-bubble tsa moea, hammoho le tšusumetso ea li-additives tsa eona le ho sebelisana le lisebelisoa tse ling. Ka hona, khetho e ikhethileng le e arotsoeng ea phofo ea polymer e ka sebelisoang hape ke mokhoa oa bohlokoa oa ho ama boleng ba sehlahisoa. Har'a bona, pono e tloaelehileng haholo ke hore phofo ea polymer e redispersible hangata e eketsa maemo a moea a seretse, ka tsela eo, e tlotsa kaho ea seretse, 'me kamano le viscosity ea phofo ea polymer, haholo-holo ha colloid e sireletsang e qhalakanngoa, ho ea metsing. Keketseho ea α e kenya letsoho ntlafatsong ea momahano oa seretse sa kaho, ka hona ho ntlafatsa ho sebetsa ha seretse. Ka mor'a moo, seretse se metsi se nang le phallo ea phofo ea latex se sebelisoa sebakeng sa mosebetsi. Ka phokotso ea mongobo ka mekhahlelo e meraro - ho monngoa ha lera la motheo, ho sebelisoa ha samente hydration reaction, le volatilization ea mongobo o holim'a moea moeeng, likaroloana tsa resin butle-butle li atamela, sebopeho se kopana butle-butle, 'me qetellong se fetoha filimi e tsoelang pele ea polymer. Ts'ebetso ena haholo-holo e hlaha ka li-pores tsa seretse le holim'a sepakapaka.
E lokela ho totobatsoa hore, e le ho etsa hore ts'ebetso ena e se ke ea etsolloa, ke hore, ha filimi ea polymer e sa qhaqhoe ha e kopana le metsi hape, colloid e sireletsang ea phofo ea polymer e redispersible e tlameha ho arohana le tsamaiso ea filimi ea polymer. Sena ha se bothata tsamaisong ea seretse sa samente ea alkaline, hobane e tla ba saponified ke alkali e hlahisoang ke hydration ea samente, 'me ka nako e ts'oanang, adsorption ea lisebelisoa tsa quartz e tla e arola butle-butle ho tloha tsamaisong ntle le tšireletso ea hydrophilic. Colloid, filimi e ke keng ea qhibiliha ka metsing 'me e thehoa ke ho qhalakanngoa ha nako e le' ngoe ea phofo ea latex e ka sebelisoang hape, e ke ke ea sebetsa feela tlas'a maemo a omileng, empa hape le tlas'a maemo a ho qoelisoa ka nako e telele ka metsing. Litsamaisong tse seng tsa alkaline, joalo ka litsamaiso tsa gypsum kapa litsamaiso tse nang le li-fillers feela, li-colloid tse sireletsang li ntse li le teng ka mokhoa o itseng filiming ea ho qetela ea polymer ka lebaka le itseng, tse amang ho hanyetsa metsi ha filimi, empa kaha lits'ebetso tsena ha li sebelisoe molemong oa ho qoelisoa ka nako e telele ka metsing, 'me polymer e ntse e e-na le thepa ea eona e ikhethang ea mochini, ha e ame ts'ebeliso ea litsamaiso tsena tsa phofo ea polymer.
Nako ea poso: Apr-25-2024