Phofo ea latex e ka qhaloang hapeke phofshoana e fetotsoeng ea lotion e fumanoang ka ho omisoa ha binary kapa ternary copolymer ea vinylacetase le ethylene tert carbonate VoVa kapa alkene kapa acrylic acid.E na le redispersibility e ntle, 'me e ka qhaqhoa hape ka setlolo ha e kopana le metsi,' me litšobotsi tsa eona tsa lik'hemik'hale li tšoana le lotion ea pele.
Lipatlisiso mabapi le phofo ea latex e ka sebelisoang hape e qalile ka 1934 ka IG Farbenindus AC Jeremane ea polyvinylidene acid redispersible latex powder.
Le "latex" ea phofo ea Japane.Ka mor’a Ntoa ea II ea Lefatše, ho ne ho e-na le khaello e khōlō ea basebetsi le lisebelisoa tsa kaho, e leng se ileng sa qobella Europe, haholo-holo Jeremane, ho sebelisa thepa e sa tšoaneng ea kaho ea phofo ho ntlafatsa katleho ea kaho.Ho elella bofelong ba lilemo tsa bo-1950, Khamphani ea Hearst ea Jeremane le Wacker Chemical Company li ile tsa qala tlhahiso ea indasteri ea phofo ea latex e ka qhaloang hape.Ka nako eo, phofo ea latex e qhalakantsoeng haholo e ne e le ea mofuta oa polyvinyl acetate, e neng e sebelisoa haholo bakeng sa sekhomaretsi sa mapolanka, primer ea lebota le lisebelisoa tsa lebota la samente.Leha ho le joalo, ka lebaka la mefokolo ea mocheso o fokolang oa filimi oa PVAc oa sekhomaretsi, ho hanyetsa metsi ho fokolang, le ho hanyetsa alkali e fokolang, tšebeliso ea eona e fokotsehile haholo.
Ka katleho e atlehileng ea indasteri ea lotion ea VAE le lotion ea VA/VeoVa,phofo ea emulsion e ka senyehangka mocheso o fokolang oa ho etsa filimi oa 0C, ho hanyetsa metsi hantle le khanyetso ea alkali e ile ea ntlafatsoa ka bo-1960.Kamora moo, ts'ebeliso ea eona e ile ea khothaletsoa haholo Europe, mme sebaka sa ts'ebeliso ea eona se ile sa atoloha butle-butle ho li-adhesives tse fapaneng tsa meralo le tse se nang sebopeho, phetoho e omeletseng ea seretse se omeletseng, ho kenya lerako le lits'ebetso tsa ho qetela, screed ea lebota le plaster ea ho tiisa. .
Tlhahiso ea malapeng ea redispersible latex phofo Lilemong tsa morao tjena, tlhokahalo eaphofshoana ea morao-rao ea latexEurope le Amerika Leboea e hōlile butle.Ho fapana le hoo, ka ho kenngwa tshebetsong butle-butle ha leano la China la paballo ya matla a moaho le kgothatso e matla ya seretse se ommeng se tswakilweng bakeng sa meaho, tshebediso ya phofo ya latex e qhalwang hape naheng ya China Mainland e eketsehile ka potlako.Likhamphani tsa kantle ho naha le likhoebo tse ling tsa lapeng le tsona li thehile merero ea phofshoana ea latex e ka qhalang naha ka bophara.Ho ea ka lipalo-palo tsa litsebi tse amehang, ka 2003, tlhahiso ea lefats'e ea phofo ea latex e ka sebelisoang hape e ne e le lithane tse 190000, tse sebelisoang haholo Europe le Amerika Leboea.Tšebeliso ea 'maraka oa Chaena e ne e le ka tlase ho lithane tse 5000.Leha ho le joalo, ka 2007, tšebeliso ea 'maraka ea phofo ea latex e ka sebelisoang hape Chaena e fihlile ho lithane tsa 450000, le barekisi ba ka sehloohong e le Dalian Chemical, Wacker ea tsoang Jeremane, le National Starch ea United States.Ho boleloa esale pele hore ka 2010, tlhokahalo ea phofo ea latex e ka sebelisoang hape Chaena e tla fihla ho lithane tsa 100000.
Mefuta ea phofo ea latex e ka sebelisoang hape:
Mefuta ea mantlha ea phofo ea latex e ka sebelisoang hape e sebelisoang hona joale 'marakeng ke:
Vinyl acetate le ethylene copolymer powder (Vac/E), ethylene le vinyl chloride, le montmorillonite ethylene ternary copolymer powder (E/Vc/VL), vinyl acetate le ethylene le acid e phahameng ea mafura ethylene ternary copolymer phofo (Vac/E/Vedoro) , vinyl acetate le mafura a phahameng a mafura a ethylene copolymer powder (Vac/VeoVa), acrylic acid le ethylene copolymer powder (A/S), vinyl acetate le acrylic acid, le mafura a phahameng a ethylene copolymer powder (Vac/A/VeoVa) asiti e phodileng. ethylene cool homopolymer rabara phofo (PVac), styrene butadiene copolymer rabara phofo (SBR), joalo-joalo.
Sebopeho sa phofo ea latex e ka sebelisoang hape:
* Redispersible latex powder hangata ke phofo e tšoeu, empa ho boetse ho na le mebala e meng e seng mekae e fumanehang.Likarolo tsa eona li kenyelletsa: * Resin ea polymer: e bohareng ba likaroloana tsa phofo ea rabara, hape ke karolo ea mantlha e ka sebelisoang ho qhala phofo ea latex.
* Keketso (ea ka hare): E sebelisoa hammoho le resin ho fetola resin.
* Li-additives (ka ntle): Bakeng sa ho eketsa ts'ebetso ea phofo ea latex e ka sebelisoang hape, lisebelisoa tse ling lia eketsoa.
Tšireletso ea colloid:
Lera la thepa ea hydrophilic e phuthetsoeng holim'a likaroloana tsa phofo tsa latex tse ka qhaloang hape, tseo bongata ba tsona li ka qhalehang hape.
Colloid e sireletsang ea phofo ea latex e qhalakaneng ke joala ba polyvinyl.
Anti-caking agent: Filler e ntle ea liminerale e sebelisoa haholo ho thibela ho kenngoa ha phofo ea rabara nakong ea polokelo le lipalangoang, le ho tsamaisa phallo ea phofo ea rabara (ho lahla mekotla ea pampiri kapa likoloing tsa litanka)
Karolo eaRDP:
*The latex phofo e qhalakantsoeng e etsa filimi ka mor'a ho hasana 'me e sebetsa e le sekhomaretsi sa bobeli ho matlafatsa matla a eona;
* Colloid e sireletsang e kenngoa ke tsamaiso ea seretse (e ke ke ea senngoa ke metsi ka mor'a ho thehoa ha filimi, kapa "phahamiso ea bobeli":
* Resin ea polymer e entsoeng ka filimi e ajoa e le lisebelisoa tse matlafatsang tsamaisong eohle ea seretse, kahoo e eketsa ho kopana ha seretse:
Ts'ebetso ea sehlahisoa:
Redispersible latex powder e entsoe ka lotion ea polymer ka ho omisa.Ka mor'a ho kopanya le metsi ka seretse, e emulsified 'me e hasane ka metsing ho etsa lotion e tsitsitseng ea polymer hape.Ka mor'a hore phofo ea latex e redispersible e kenngoe 'me e qhalakane ka metsing, metsi a fetoha mouoane, a etsa filimi ea polymer ka seretse ho ntlafatsa ts'ebetso ea seretse.Phapang e fapaneng e ka sebelisoang hape ea latex phofo e na le litlamorao tse fapaneng ho seretse sa phofo se omileng.Ka ho ntlafatsa ho hanyetsa ha seretse, ho tšoarella, le ho hanyetsa ho apara ha seretse, likaroloana tsa phofo tse khomarelang li tlatsa li-pores tsa seretse, li eketsa ho kopana ha tsona le ho ntlafatsa ho hanyetsa ha eona.Tlas'a ketso ea matla a ka ntle, e tla hlahisa phomolo ntle le ho senyeha.Lifilimi tse khomarelang polymer li ka ba teng ka ho sa feleng lits'ebetsong tsa seretse.Ho ntlafatsa ts'ebetso ea ho haha seretse.
Ho na le phello ea lubricating pakeng tsa likaroloana tsa phofo ea sekhomaretsi sa polymer, e lumellang likarolo tsa seretse hore li phalle ka bolokolohi, ha phofo e khomarelang e na le phello e susumetsang moeeng, p.rovide compressibility ea seretse le ho ntlafatsa ho sebetsa ha eona nakong ea kaho.Ho ntlafatsa matla a tlamahano le momahano oa seretse.
Ka mor'a ho nkuoa filimi lephofshoana ea morao-rao ea latexjoalo ka setlamo sa manyolo, se ka theha matla a phahameng a ho tsitsa le matla a sekhomaretsi ho li-substrates tse fapaneng.E bapala karolo ea bohlokoa ho khomarela pakeng tsa seretse le lisebelisoa tsa manyolo (EPS, boto ea foam e ntšitsoeng) le substrate e boreleli.Phofo ea sekhomaretsi ea polymer e entsoeng ka filimi e ajoa e le lisebelisoa tse matlafatsang ho pholletsa le tsamaiso eohle ea seretse, ho eketsa ho kopana ha seretse.Ho ntlafatsa ho hanyetsa boemo ba leholimo, ho hanyetsa ho qhibiliha ha seretse, le ho thibela ho phatloha ha seretse, redispersible latex powder ke ea resin ea thermoplastic, e nang le maemo a bonolo 'me e ka etsa hore seretse se ikamahanye le maemo a leholimo a batang le a leholimo a chesang, ka katleho ho thibela ho phatloha ha seretse ka lebaka la phapang ea mocheso. .Ka ho ntlafatsa hydrophobicity ea seretse le ho fokotsa ho kenngoa ha metsi, phofo ea latex e ka qhalakanngoa hape ho etsa filimi holim'a pore le holim'a seretse.Filimi ea sekhomaretsi sa polymer e ke ke ea qhalakanngoa hape ka mor'a ho kopana le metsi, ho thibela ho hlaseloa ha metsi le ho ntlafatsa ho se khonehe ha eona.Phofo e khethehileng ea morao-rao ea latex e nang le phello ea hydrophobic e na le phello e ntle ea hydrophobic.Ho ntlafatsa matla a ho kobeha le matla a flexural a seretse.
Sesebelisoa sa sehlahisoa:
Sistimi ea ho kenya lebota kantle:
Seretse sa Bonding: Netefatsa hore seretse se khomarela ka thata lebota ho boto ea EPS.Ntlafatsa matla a maqhama.
Seretse sa ho pola: Netefatsa matla a mochini, ho hanyetsa ho phatloha, ho tšoarella, le ho hanyetsa tšusumetso ea sistimi ea insulation.
Joint filler: Ho se mele ha seretse hothibela ho kenella ha metsi.Ka nako e ts'oanang, e na le ho khomarela hantle ka mathōko a lithaele tsa ceramic, tekanyo e tlaase ea ho fokotseha, le ho fetoha habonolo.
Ntlafatso ea lithaele le boto ea plastering putty: Ntlafatsa ho khomarela le ho kopanya matla a putty holim'a li-substrates tse khethehileng (joalo ka lithaelese tsa ceramic, li-mosaics, plywood le libaka tse ling tse boreleli), ho netefatsa hore putty e na le maemo a bonolo a ho tsitlella sekhahla sa ho atolosa. substrate.
Seretse sa masonry le plastering: Ntlafatsa ho boloka metsi.Fokotsa tahlehelo ea metsi ka li-porous substrates.
Seretse sa samente se sa keneleng metsi:Netefatsa ts'ebetso e sa keneleng metsi ea ho roala seretse, ha o ntse o e-na le mamarelo a matle le bokaholimo ba motheo, 'me u ntlafatse matla a khatello le a feto-fetohang a seretse.
Seretse sa ho itokisa fatše:Etsa bonnete ba hore modulus ea rekere ea seretse e lumellana, hammoho le ho hanyetsa ho kobeha le ho phunyeha.Ntlafatsa khanyetso ea ho roala, matla a tlamahano, le momahano oa seretse.
Seretse sa Interface:Ntlafatsa matla a holim'a substrate 'me u netefatse matla a tlamahano ea seretse.
Ka hare le ka ntle lebota putty:Ntlafatsa matla a tlamahano ea putty le ho etsa bonnete ba hore e na le tekanyo e itseng ea ho feto-fetoha ha maemo ho thibela katoloso le likhatello tse fapaneng tse hlahisoang ke likarolo tse fapaneng tsa motheo.Netefatsa hore putty e na le khanyetso e ntle ea botsofali, ho se khonehe, le ho hanyetsa mongobo.
Lokisa seretse:Netefatsa hore seretse se atolosoang se lumellana le sa substrate, le ho fokotsa modulus ea seretse.Netefatsa hore seretse se na le hydrophobicity e lekaneng, phefumoloho le matla a tlamahano.
Sekhomaretsi sa lithaele le setlolo se kopaneng:Sekhomaretsi sa lithaele: se fana ka maqhama a matla a phahameng bakeng sa seretse, se fana ka phetoho e lekaneng ea ho hatella li-coefficients tse fapaneng tsa katoloso ea mocheso oa substrate le lithaele tsa ceramic.Ntlafatsa bonolo ba mesebetsi ea kaho le ho ntlafatsa katleho ea mosebetsi
Nako ea poso: Oct-08-2023