Redispersible polymer powders (RDP) ke metsoako e rarahaneng ea li-polymers le li-additives tse sebelisoang haholo ho thepa ea kaho, haholo-holo ha ho etsoa lirekere tse omileng. Liphofshoana tsena li phetha karolo ea bohlokoa ho ntlafatsa ts'ebetso le litšoaneleho tsa lisebelisoa tse sa tšoaneng tsa kaho tse kang li-adhesives tsa lithaele, li-grouts, metsoako ea ho ikemela le li-plaster tsa cementitious.
Likarolo tsa bohlokoa:
Motheo oa polymer:
Ethylene vinyl acetate (EVA): EVA copolymer e atisa ho sebelisoa ho RDP ka lebaka la thepa ea eona e babatsehang ea ho etsa lifilimi, ho khomarela le ho fetoha habonolo. Likahare tsa vinyl acetate ka har'a copolymer li ka fetoloa ho fetola thepa ea polymer.
Vinyl Acetate vs. Ethylene Carbonate: Ho itšetlehile ka litlhoko tse khethehileng tsa kopo, bahlahisi ba ka sebelisa ethylene carbonate ho e-na le vinyl acetate. Ethylene carbonate e ntlafalitse ho hanyetsa metsi le ho khomarela maemong a mongobo.
Acrylics: Acrylic polymers, ho kenyelletsa le li-acrylic tse hloekileng kapa li-copolymers, li sebelisoa bakeng sa ho hanyetsa boemo ba leholimo bo ikhethang, ho tšoarella, le ho feto-fetoha ha maemo. Li tsejoa ka ho fana ka sekhomaretsi se setle ho mefuta e fapaneng ea li-substrates.
Tšireletso ea colloid:
Hydroxypropyl methylcellulose (HPMC): HPMC ke colloid e sireletsang e atisang ho sebelisoa ho RDP. E ntlafatsa redispersibility ea likaroloana tsa polymer le ho ntlafatsa thepa eohle ea phofo.
Polyvinyl alcohol (PVA): PVA ke colloid e 'ngoe e sireletsang e thusang botsitso le ho hasana ha likaroloana tsa polymer. E boetse e phetha karolo ea ho laola viscosity ea phofo.
Plasticizer:
Dibutyl Phthalate (DBP): DBP ke mohlala oa plasticizer eo hangata e kenyelletsoang ho RDP ho ntlafatsa ho fetoha ha maemo le ho sebetsa. E thusa ho theola mocheso oa phetoho ea khalase ea polymer, e etsa hore e be elastic haholoanyane.
filler:
Calcium Carbonate: Li-fillers tse kang calcium carbonate li ka eketsoa ho ntlafatsa bongata ba phofo le ho fana ka mokhoa o theko e boima oa ho lokisa thepa e kang sebopeho, porosity le opacity.
Li-stabilizers le li-antioxidants:
Li-stabilizers: Tsena li sebelisetsoa ho thibela ho senyeha ha polymer nakong ea ho boloka le ho sebetsa.
Antioxidants: Antioxidants e sireletsa polymer ho senyeha ha oxidative, ho netefatsa hore RDP e phela nako e telele.
Mesebetsi ea karolo ka 'ngoe:
Polymer base: E fana ka thepa ea ho etsa filimi, ho khomarela, ho feto-fetoha ha maemo le matla a mochine ho sehlahisoa sa ho qetela.
Protective colloid: Ntlafatsa ho redispersibility, botsitso le ho hasana ha likaroloana tsa polymer.
Plasticizer: E ntlafatsa ho tenyetseha le ho sebetsa habonolo.
Fillers: Fetola lintho tse kang sebopeho, porosity, le opacity.
Li-stabilizers le li-antioxidants: Thibela ho senyeha ha polymer nakong ea ho boloka le ho sebetsa.
ha re phethela:
Redispersible polymer powder (RDP) ke motsoako o feto-fetohang le oa bohlokoa oa thepa ea sejoale-joale ea moaho. Sebopeho sa eona sa lik'hemik'hale, ho kenyelletsa le li-polymers tse kang EVA kapa li-resin tsa acrylic, li-colloid tse sireletsang, li-plasticizers, li-fillers, stabilizers le li-antioxidants, li hlophisitsoe ka hloko ho finyella litlhoko tse khethehileng tsa kopo ka 'ngoe. Ho kopanngoa ha likarolo tsena ho thusa ho ntlafatsa phofshoana ea phofo, matla a tlamo, ho feto-fetoha ha maemo le ts'ebetso e akaretsang ka mokhoa o omileng oa ho kopanya seretse.
Nako ea poso: Dec-18-2023