Emulsion le redispersible latex phofo ka theha matla a phahameng tensile le matla a tlamahano ka thepa e fapaneng ka mor'a hore filimi e thehoe, li sebelisoa e le binder ea bobeli ka seretse ho kopana le inorganic binder samente, samente le polymer ka ho latellana Fana ka ho bapala ka ho feletseng ho matla a tšoanang ho ntlafatsa tshebetso ya seretse.
Ka ho shebella microstructure ea lintho tse entsoeng ka polymer-samente, ho lumeloa hore tlatsetso ea redispersible latex phofo e ka etsa hore polymer e thehe filimi 'me e be karolo ea lerako la lesoba,' me e etse hore seretse se be le seretse se feletseng ka matla a ka hare, a ntlafatsang matla a ka hare a seretse. Matla a polymer, ka hona a ntlafatsa khatello ea maikutlo ea seretse le ho eketsa khatello ea mantlha.
The microstructure ea polymer ka seretse ha e e-s'o fetohe ka nako e telele, 'me e boloka bonding e tsitsitseng, flexural le compressive matla, le hydrophobicity e ntle. Mokhoa oa sebopeho sa "latex powder" ka matla a likhomaretsi o fumane hore ka mor'a hore polymer e omelle filiming, filimi ea polymer e theha kamano e feto-fetohang pakeng tsa seretse le tile ka lehlakoreng le leng, 'me ka lehlakoreng le leng, polymer ka seretse se secha Eketsa moea oa seretse le ho ama sebopeho le ho koloba ha metsi holim'a metsi, ebe ts'ebetso ea polima e boetse e na le tšusumetso e ntle holim'a metsi. shrinkage ea samente ka se tlamang, e leng tla kenya letsoho ntlafatsong Bond matla na le thuso e molemo.
Ho eketsa phofo ea latex e ka sebelisoang hape seretseng ho ka ntlafatsa haholo matla a tlamahano le lisebelisoa tse ling, hobane phofo ea hydrophilic latex le karolo ea mokelikeli ea ho emisoa ha samente e kenella ka har'a pores le li-capillaries tsa matrix, 'me phofo ea latex e kenella ka har'a pores le capillaries. Filimi e ka hare e thehoa 'me e tsitsitse ka thata holim'a substrate, kahoo e tiisa matla a maqhama a matle pakeng tsa lisebelisoa tsa cementitious le substrate.
Ntlafatso ea phofo ea latex ts'ebetsong ea seretse e bakoa ke taba ea hore phofo ea latex ke polymer e phahameng ea molek'hule e nang le lihlopha tsa polar. Ha latex phofo e kopantsoe le likaroloana tsa EPS, karolo e seng ea polar ka har'a ketane e kholo ea polymer ea phofo ea latex e tla ba Physical adsorption e tla etsahala ka sebaka se seng sa polar sa EPS. Lihlopha tsa polar tse polymer li lebisitsoe ka ntle holim'a likaroloana tsa EPS, e le hore likaroloana tsa EPS li fetohe ho tloha ho hydrophobicity ho ea ho hydrophilicity. Ka lebaka la ho fetoloa ha bokaholimo ba likaroloana tsa EPS ka phofo ea latex, e rarolla bothata ba hore likaroloana tsa EPS li pepesehela metsi habonolo. Ho phaphamala, bothata ba ho beha seretse se seholo. Ka nako ena, ha samente e eketsoa 'me e kopantsoe, lihlopha tsa polar tse adsorbed holim'a likaroloana tsa EPS li sebelisana le likaroloana tsa samente ebe li kopanya haufi-ufi, e le hore ho sebetsa ha seretse sa EPS ho ntlafatsoe haholo. Sena se bonahala ka taba ea hore likaroloana tsa EPS li kolobisoa habonolo ke pente ea samente, 'me matla a ho kopanya pakeng tsa tse peli a ntlafala haholo.
Nako ea poso: Mar-18-2023