Ke likarolo life tsa phofo ea emulsion e ka sebelisoang hape
Redispersible Emulsion Powder (RDP) hangata e entsoe ka likarolo tse 'maloa tsa bohlokoa, e' ngoe le e 'ngoe e sebeletsa morero o itseng ha ho etsoa. Leha sebopeho se nepahetseng se ka fapana ho latela moetsi le ts'ebeliso e reriloeng, likarolo tsa mantlha tsa RDP hangata li kenyelletsa:
- Polymer Base: Karolo e ka sehloohong ea RDP ke polymer ea maiketsetso, e etsang mokokotlo oa phofo. Polymer e sebelisoang haholo ho RDP ke vinyl acetate-ethylene (VAE) copolymer. Li-polymer tse ling tse kang vinyl acetate-vinyl versatate (VA/VeoVa) copolymers, ethylene-vinyl chloride (EVC) copolymers, le acrylic polymers le tsona li ka sebelisoa ho itšetlehile ka thepa e lakatsehang.
- Protective Colloids: RDP e ka ba le li-colloid tse sireletsang tse kang cellulose ethers (mohlala, hydroxypropyl methylcellulose), polyvinyl alcohol (PVA), kapa starch. Li-colloids tsena li thusa ho tsitsisa emulsion nakong ea tlhahiso le polokelo, ho thibela coagulation kapa sedimentation ea likaroloana tsa polymer.
- Li-Plasticizers: Li-plasticizers li kenyelelitsoe mefuteng ea RDP ho ntlafatsa ho tenyetseha, ho sebetsa le ho khomarela. Li-plasticizers tse tloaelehileng tse sebelisoang ho RDP li kenyelletsa glycol ethers, polyethylene glycols (PEGs), le glycerol. Li-additives tsena li thusa ho ntlafatsa ts'ebetso le litšobotsi tsa ts'ebetso ea RDP lits'ebetsong tse fapaneng.
- Liakhente tse hasanyang: Liakhente tsa ho hasanya li sebelisoa ho etsa bonnete ba ho hasana ho tšoanang le ho qhalana hape ha likaroloana tsa RDP metsing. Mahlahana ana a ntlafatsa ho kolobisa le ho hasana ha phofo ka har'a litsamaiso tse nang le metsi, e leng se lumellang hore ho be bonolo ho kenngoa ka har'a lihlahisoa le ho ntlafatsa botsitso ba li-dispersions tse hlahisoang.
- Li-Fillers le Additives: Meetso ea RDP e ka ba le li-filler le li-additives tse kang calcium carbonate, silica, kaolin, kapa titanium dioxide. Li-additives tsena li thusa ho ntlafatsa ts'ebetso, sebopeho le ponahalo ea RDP lits'ebetsong tse ikhethileng. Li ka boela tsa sebetsa e le lisebelisoa kapa lisebelisoa tse sebetsang ho ntlafatsa thepa e kang opacity, durability, kapa rheology.
- Surface Active Agents: Liakhente tse sebetsang ka holim'a metsi kapa li-surfactants li ka eketsoa ho metsoako ea RDP ho ntlafatsa ho kolobisa, ho hasana, le ho lumellana le likarolo tse ling tsa ho etsoa. Mahlahana ana a thusa ho fokotsa tsitsipano ea holim'a metsi le ho khothaletsa tšebelisano pakeng tsa likaroloana tsa RDP le sepakapaka se potolohileng, ho netefatsa ho hasana ho tšoanang le ts'ebetso e sebetsang likopong.
- Li-Anti-Foaming Agents: Li-anti-foaming agents li ka kenyelletsoa mefuteng ea RDP ho thibela ho etsoa ha foam nakong ea tlhahiso kapa kopo. Mahlahana ana a thusa ho fokotsa ho kenella ha moea le ho ntlafatsa botsitso le botsitso ba liphatlalatso tsa RDP, haholo-holo mekhoeng ea ho kopanya ho kuta haholo.
- Li-additives tse ling: Ho itšetlehile ka litlhoko tse khethehileng le mekhoa ea ts'ebetso ea lihlahisoa tsa RDP, li-additives tse ling tse kang li-cross-linking agents, stabilizers, antioxidants, kapa colorants li ka kenyelletsoa. Li-additives tsena li thusa ho hlophisa thepa le tšebetso ea RDP bakeng sa lits'ebetso tse ikhethileng le litlhoko tsa basebelisi ba ho qetela.
likarolo tsa redispersible emulsion phofo sebetsa synergistically ho fana ka thepa e lakatsehang tse kang ho khomarela, tenyetseha, ho hanyetsa metsi, le workability ka thepa e sa tšoaneng ea kaho le dikopo. Ho khethoa le ho hlophisoa ha likarolo tsena ho bohlokoa bakeng sa ho fihlela ts'ebetso e nepahetseng le boleng ba lihlahisoa tsa RDP.
Nako ea poso: Feb-16-2024