Li-cellulose ethers (HEC, HPMC, MC, joalo-joalo) le li-polymer powders tse ka sebelisoang hape (hangata li thehiloe ho VAE, acrylates, joalo-joalo)ke li-additives tse peli tsa bohlokoa ka har'a seretse, haholo-holo liretse tsa motsoako o omileng. E 'ngoe le e' ngoe ea tsona e na le mesebetsi e ikhethang, 'me ka litlamorao tse bohlale tsa synergistic, e ntlafatsa haholo ts'ebetso e akaretsang ea seretse. Tšebelisano ea bona e bonahala haholo-holo likarolong tse latelang:
Li-cellulose ethers li fana ka tikoloho ea bohlokoa (ho boloka metsi le ho teteana):
Ho boloka metsi: Ena ke e 'ngoe ea mesebetsi ea mantlha ea cellulose ether. E ka etsa filimi ea hydration lipakeng tsa likaroloana tsa seretse le metsi, e fokotsa haholo sekhahla sa mouoane oa metsi ho substrate (joalo ka litene le li-blocks) le moea.
Kameho ho phofshoana ea polymer e ka qhalehang: Ts'ebetso ena e ntle ea ho bolokoa ha metsi e theha maemo a bohlokoa bakeng sa phofshoana e ka sebelisoang hape ea polymer ho sebetsa:
Ho fana ka nako ea ho etsa filimi: likaroloana tsa phofo ea polymer li hloka ho qhibiliha ka metsing ebe li qhalakanngoa hape ka emulsion. Phofo ea polima e ntan'o kopana ho ba filimi ea polima e tsoelang pele, e tenyetsehang ha metsi a ntse a fetoha mouoane butle-butle nakong ea ho omisa seretse. Cellulose ether e liehisa mouoane oa metsi, e fa likaroloana tsa phofo ea polymer nako e lekaneng (nako e bulehileng) hore e qhalakane ka ho lekana le ho fallela ka har'a li-pores le li-interfaces, qetellong e etsa filimi ea boleng bo phahameng, e feletseng ea polymer. Haeba tahlehelo ea metsi e potlakile haholo, phofo ea polymer e ke ke ea etsa filimi ka botlalo kapa filimi e tla khaotsa, e fokotsa haholo phello ea eona ea ho matlafatsa.
Ho etsa bonnete ba hore Cement Hydration: Samente hydration e hloka metsi.Thepa ea ho boloka metsiea cellulose ether e etsa bonnete ba hore le hoja phofo ea polymer e etsa filimi, samente e boetse e fumana metsi a lekaneng bakeng sa ho phalla ka ho feletseng, kahoo ho hlahisa motheo o motle oa matla a pele le a morao. Matla a hlahisoang ke samente hydration e kopantsoeng le ho feto-fetoha ha filimi ea polymer ke motheo oa ts'ebetso e ntlafetseng.
Cellulose ether e ntlafatsa ts'ebetso (ho tiea le ho kenella moeeng):
Thickening/Thixotropy: Cellulose ethers e eketsa haholo ho tsitsisa le thixotropy ea seretse (e teteaneng ha e ntse e khutsitse, e tšesaane ha e tsosoa / e sebelisoa). Sena se ntlafatsa ho hanyetsa ha seretse ho sag (ho thella fatše holimo), ho etsa hore ho be bonolo ho hasana le ho lekana, ho fella ka qetello e ntle.
Phello ea ho kenya moea: Cellulose ether e na le bokhoni bo itseng ba ho kenya moea, e hlahisa lipululana tse nyenyane, tse tšoanang le tse tsitsitseng.
Tšusumetso ho phofo ea polymer:
Phahamiso e ntlafetseng: Viscosity e nepahetseng e thusa likaroloana tsa phofo tsa latex ho hasana ka mokhoa o ts'oanang tsamaisong ea seretse nakong ea ho kopanya le ho fokotsa agglomeration.
Optimized workability: Mehaho e metle ea kaho le thixotropy li etsa hore seretse se nang le phofo ea latex se be bonolo ho sebetsana le sona, ho netefatsa hore se sebelisoa ka mokhoa o lekanang ho substrate, e leng ea bohlokoa bakeng sa ho sebelisa ka botlalo phello ea bonding ea latex powder ho interface.
Lubrication le cushioning liphello tsa li-bubble tsa moea: Li-bubble tsa moea tse hlahisitsoeng li sebetsa e le li-bearings tsa bolo, li ntlafatsa le ho feta matla le ho sebetsa ha seretse. Ka nako e ts'oanang, li-microbubble tsena li thibela khatello ea kelello ka har'a seretse se thata, se tlatsanang le phello e thata ea latex powder (le hoja ho kenngoa ha moea ho feteletseng ho ka fokotsa matla, kahoo ho leka-lekana hoa hlokahala).
Redispersible polymer phofo e fana ka tlamahano e feto-fetohang le matlafatso (sebopeho sa lifilimi le tlamahano):
Ho thehoa ha filimi ea polymer: Joalokaha ho boletsoe pejana, nakong ea ho omisoa ha seretse, likaroloana tsa phofo tsa latex li kopana ho ba filimi ea marang-rang ea polymer e tsoelang pele ea likarolo tse tharo.
Kameho ho matrix a seretse:
Khokahano e ntlafetseng: Liphutheloana tsa filimi ea polymer le marokho a lihlahisoa tsa samente tsa hydration, likaroloana tsa samente tse se nang metsi, li-fillers le li-aggregates, li matlafatsa haholo matla a ho kopanya (momahano) pakeng tsa likarolo tse ka hare ho seretse.
Ho feto-fetoha ha maemo ho ntlafalitsoeng le ho hanyetsa crack: Filimi ea polymer ka tlhaho e tenyetseha ebile e le ductile, e fa seretse se thata matla a ho holofala. Sena se nolofalletsa seretse ho monya hantle le ho aba likhatello tse bakoang ke ho fetoha ha mocheso, ho fetoha ha mongobo, kapa ho falla hanyenyane ha substrate, ho fokotsa haholo kotsi ea ho phunyeha (ho hanyetsa ho phunyeha).
Ho hanyetsa tšusumetso e ntlafetseng le ho hanyetsa ho apara: Filimi e feto-fetohang ea polymer e ka monya matla a tšusumetso le ho ntlafatsa ho hanyetsa tšusumetso le ho roala ho hanyetsa ha seretse.
Ho theola modulus ea elastic: ho etsa hore seretse se be bonolo le ho ikamahanya le maemo ho deformation ea substrate.
Latex phofo e ntlafatsa kamano ea sefahleho (ntlafatso ea sefahleho):
Ho tlatselletsa sebaka se sebetsang sa li-cellulose ethers: Phello ea ho boloka metsi ea li-cellulose ethers e boetse e fokotsa bothata ba "khaello ea metsi ka mahlakoreng a mabeli" e bakoang ke ho kenngoa ha metsi ho feteletseng ke substrate. Habohlokoa le ho feta, likaroloana tsa phofo ea polymer / emulsions li na le tšekamelo ea ho fallela ho sehokelo sa seretse-substrate le sehokelo sa seretse-reinforcement (haeba se le teng).
Ho theha sehokelo se matla sa sebopeho: Filimi ea polima e entsoeng ka har'a sehokelo e kenella ka matla 'me e itsetsepetse ka har'a li-micropores tsa substrate (physical bonding). Ka nako e ts'oanang, polymer ka boeona e bonts'a ho khomarela hantle (lik'hemik'hale / adsorption ea 'mele) ho mefuta e fapaneng ea li-substrates (konkreite, litene, lehong, mapolanka a ho kenya EPS / XPS, joalo-joalo). Sena se matlafatsa matla a tlamahano ea seretse (ho khomarela) ho li-substrates tse fapa-fapaneng, qalong le ka mor'a ho qoelisoa metsing le ho qhibiliha ha metsi (ho hanyetsa metsi le ho hanyetsa boemo ba leholimo).
Synergistic optimization ea sebopeho sa pore le ho tšoarella:
Liphello tsa cellulose ether: Ho boloka metsi ho ntlafatsa metsi a samente le ho fokotsa li-pores tse hlephileng tse bakoang ke khaello ea metsi; phello ea ho kenya moea e hlahisa li-pores tse nyane tse laolehang.
Phello ea phofo ea polymer: Lera la polymer le thibela karolo e itseng kapa le koala likoti tsa capillary, ho etsa hore sebopeho sa pore se be se senyane mme se fokotsehe ho hokahana.
Phello ea Synergistic: Phello e kopantsoeng ea lintlha tsena tse peli e ntlafatsa sebopeho sa pore ea seretse, ho fokotsa ho monya ha metsi le ho eketsa ho se hloeke ha eona. Sena ha se matlafatse feela ho tšoarella ha seretse (ho hanyetsa ha leqhoa le ho qhibiliha ha letsoai), empa hape se fokotsa monyetla oa ho tsoa ha metsi ka lebaka la ho fokotseha ha metsi. Sebopeho sena se ntlafetseng sa pore se boetse se amahanngoa le matla a phahameng.
Cellulose ether ke "motheo" le "tiisetso": e fana ka tikoloho e hlokahalang ea ho boloka metsi (ho nolofaletsa samente hydration le sebopeho sa filimi ea latex), e ntlafatsa bokhoni ba ho sebetsa (ho netefatsa hore ho beoa seretse se le seng), le ho susumetsa microstructure ka ho tenya le moea o kenang.
Redispersible latex powder ke ka bobeli "enhancer" le "borokho": e etsa filimi ea polymer tlas'a maemo a matle a entsoeng ke cellulose ether, e ntlafatsa haholo momahano oa seretse, ho feto-fetoha ha maemo, ho hanyetsa ho phatloha, matla a tlamahano le ho tšoarella.
Core synergy: Matla a ho boloka metsi a cellulose ether ke ntho e hlokahalang bakeng sa ho etsa filimi e sebetsang ea phofo ea latex. Ntle le ho boloka metsi a lekaneng, phofo ea latex e ke ke ea sebetsa ka botlalo. Ka lehlakoreng le leng, tlamahano e tenyetsehang ea phofo ea latex e kokobetsa bofokoli, ho peperana le ho sekama ho lekaneng ha thepa e entsoeng ka samente, e leng ho matlafatsang ho tšoarella haholo.
Liphello tse kopantsoeng: Tse peli li matlafatsana ho ntlafatsa sebopeho sa pore, ho fokotsa ho monya ha metsi, le ho matlafatsa nako e telele, ho fella ka liphello tsa synergistic. Ka hona, lirekeng tsa sejoale-joale (tse kang likhomaretsi tsa lithaele, samente e kenang kantle / lirekere tse tlamang, lirekere tse itšebetsang, lirekere tse sa keneleng metsi, le lirekere tse khabisitsoeng), li-cellulose ethers le li-polymer powders tse qhalakantsoeng hangata li sebelisoa ka bobeli. Ka ho lokisa hantle mofuta le litekanyetso tsa e 'ngoe le e 'ngoe, lihlahisoa tsa seretse sa boleng bo holimo li ka raloa ho fihlela litlhoko tse fapaneng tsa ts'ebetso. Phello ea bona ea synergistic ke senotlolo sa ho ntlafatsa lirekere tsa setso hore e be li-composite tsa cementitious tse sebetsang hantle ka polymer.
Nako ea poso: Aug-06-2025