Ke litlamorao life tseo phofo ea polymer e qhalahang e nang le eona ho matla a seretse?

Ho kopanya li-polymer powders tse ka sebelisoang hape (RPP) mefuteng ea seretse ho ama haholo matla a thepa e hlahisoang. Sengoliloeng sena se hlahloba litlamorao tsa RPP ho matla a seretse, ho kenyelletsa le tšusumetso ea bona ho matla a khatello, matla a ho feto-fetoha ha maemo, matla a sekhomaretsi, le ho hanyetsa tšusumetso.

1. Matla a Khatellang:

Matla a hatellang ke thepa ea motheo ea seretse, e bontšang bokhoni ba eona ba ho mamella meroalo ea axial. Keketso ea li-RPP e ka matlafatsa matla a khatello ka mekhoa e mengata:

Momahano e Eketsehileng:

Li-RPP li sebetsa e le li-agent tse tlamang, tse khothalletsang bonngoe bo betere pakeng tsa likaroloana tsa seretse. Bonding ena e ntlafetseng ea li-interparticle e kenya letsoho ho matla a holimo a ho hatella ka ho fokotsa li-voids tse ka hare le ho matlafatsa botšepehi ba sebopeho sa thepa.

Ho Monyeha ho Fokotseng ha Metsi:

Li-RPP li ntlafatsa ho bolokoa ha metsi ka seretse, e leng se lumellang hore ho be le hydration e sebetsang hantle ea thepa ea samente. hydration e nepahetseng e lebisa ho li-microstructures tse teteaneng tse nang le li-void tse fokolang, tse hlahisang matla a phahameng a khatello le litekanyetso tse tlaase tsa ho monya metsi.

Matla a Ntlafetseng a Flexural:

Ho feto-fetoha ha maemo ho fanoang ke li-RPP ho ka susumetsa ka tsela e sa tobang matla a khatello ka ho thibela li-microcracks ho hasana le ho fokolisa thepa. Li-mortar tse nang le li-RPPs hangata li bonts'a matla a flexural a ntlafalitsoeng, a amanang le ho hanyetsa matla a khatello.

2. Flexural Strength:

Matla a Flexural a lekanya bokhoni ba thepa ea ho hanela ho kobeha kapa ho kheloha tlas'a meroalo e kentsoeng. Li-RPP li kenya letsoho ho ntlafatseng matla a ho feto-fetoha ha seretse ka mekhoa e latelang:

Keketseho ea Matla a Bond:

Li-RPP li ntlafatsa ho khomarela lipakeng tsa likarolo tsa seretse le libaka tsa substrate, e leng se bakang litlamo tse matla le ho fokotsa delamination. Matla ana a ntlafetseng a tlamahano a fetolela khanyetso e phahameng ea ho kobeha le khatello ea maikutlo, ka tsela eo e matlafatsa matla a flexural.

Momahano e Matlafalitsoeng:

Mehaho e momahaneng ea seretse se fetotsoeng sa RPP e thusa ho aba meroalo e kentsoeng ka mokhoa o ts'oanang ho pholletsa le karolo ea thepa. Kabo ena e fokotsa khatello ea maikutlo sebakeng sa heno 'me e thibela ho hloleha pele ho nako, e leng se bakang matla a holimo a ho feto-fetoha ha maemo.

3. Matla a Sekhomaretsi:

Matla a sekhomaretsi a bolela tlamahano e teng lipakeng tsa seretse le libaka tsa substrate. Li-RPP li bapala karolo ea bohlokoa ho matlafatsa matla a sekhomaretsi ka mekhoa e latelang:

Ntlafatso ea ho khomarela:

Li-RPP li khothalletsa ho khomarela hamolemo ka ho etsa filimi e tšesaane, e tenyetsehang holim'a libaka tsa substrate, e leng ho matlafatsang sebaka sa ho ikopanya le ho khothalletsa ho ikopanya ha lifahleho. Khomarelo ena e ntlafetseng e thibela ho hokahana le ho tiisa likhokahano tse matla lipakeng tsa seretse le substrate.

Li-Shrinkage Cracks li fokotsehile:

Thepa ea ho fetoha le maemo le ho boloka metsi ea li-RPP e thusa ho fokotsa mapetsong a seretse, a ka senyang matla a sekhomaretsi. Ka ho fokotsa ho thehoa le ho phatlalatsoa ha crack, li-RPP li kenya letsoho ho li-bond tse matla le tse tšoarellang haholoanyane.

4. Ho hanyetsana le Liphello:

Impact resistance e lekanya bokhoni ba thepa ea ho mamella litlamorao tsa tšohanyetso, tse matla haholo ntle le ho robeha kapa ho robeha. Li-RPP li ntlafatsa ho hanyetsa ha seretse ka mekhoa e latelang:

Matla a Eketsehileng:

Seretse se fetotsoeng sa RPP se bonts'a ho tiea ho hoholo ka lebaka la ho feto-fetoha ha maemo le ductility e ntlafalitsoeng. Matla ana a ntseng a eketseha a lumella thepa ho monya le ho qhala matla a tšusumetso ka katleho, ho fokotsa monyetla oa ho robeha kapa ho hloleha ha ts'usumetso.

Matla a Matlafalitsoeng:

Ho tšoarella ho fanoang ke li-RPP ho lelefatsa bophelo ba tšebeletso ea seretse, ho netefatsa ts'ebetso ea nako e telele tlas'a maemo a thata. Sena se ntlafetseng sa nako e telele se fetolela ho hanyetsa ho phahameng ho senyeha ha tšusumetso, abrasion, le mefuta e meng ea khatello ea mochine.

Qetellong, li-polymer powders tse ka sebelisoang hape li bapala karolo ea bohlokoa ho matlafatseng thepa ea matla ea seretse, ho kenyelletsa le matla a hatellang, matla a ho feto-fetoha, matla a sekhomaretsi, le ho hanyetsa tšusumetso. Ka ho ntlafatsa momahano, ho khomarela le ho tšoarella, li-RPP li kenya letsoho ho nts'etsopele ea lihlahisoa tsa seretse tse sebetsang hantle tse loketseng mekhoa e mengata ea kaho.