I-Cellulose ethers (i-HEC, i-HPMC, i-MC, njl.) kunye ne-polymer powders ekwazi ukuphinda isetyenziswe (ngokuqhelekileyo isekelwe kwi-VAE, i-acrylates, njl.)zizongezo ezibini ezibalulekileyo kudaka, ingakumbi udaka oluxubeneyo owomileyo. Ngamnye wabo unemisebenzi ekhethekileyo, kwaye ngeziphumo ezikrelekrele ze-synergistic, baphucula kakhulu ukusebenza kodaka. Ukusebenzisana kwabo kubonakaliswa ikakhulu kule miba ilandelayo:
I-cellulose ethers ibonelela ngemekobume engundoqo (ukugcina amanzi kunye nokujiya):
Ukugcinwa kwamanzi: Lo ngomnye wemisebenzi engundoqo ye-cellulose ether. Iyakwazi ukwenza ifilimu ye-hydration phakathi kweengqungquthela zodaka kunye namanzi, ukunciphisa kakhulu izinga lokunyuka kwamanzi kwi-substrate (njengezitena eziqhekezayo kunye neebhloko) kunye nomoya.
Impembelelo kumgubo wepolymer enokuphinda isebenze: Oku kugcinwa kugqwesileyo kwamanzi kudala iimeko ezibalulekileyo ukuze usebenze kwakhona umgubo wepolymer:
Ukubonelela ngexesha lokubumba ifilimu: i-polymer powder particles kufuneka ichithwe emanzini kwaye iphinde ifakwe kwi-emulsion. Umgubo wepolymer emva koko udibana kwifilimu yepolymer eqhubekayo, ebhetyebhetye njengoko amanzi ephuma kancinci kancinci ngexesha lenkqubo yokomisa udaka. I-ether ye-cellulose icotha ukuvela kwamanzi, inika i-polymer powder particles ixesha elaneleyo (ixesha elivulekileyo) ukuba lihlakazeke ngokulinganayo kwaye lifudukele kwi-pores yodaka kunye ne-interfaces, ekugqibeleni yenze umgangatho ophezulu, ifilimu ye-polymer epheleleyo. Ukuba ilahleko yamanzi ikhawuleza kakhulu, i-polymer powder ayiyi kubumba ngokupheleleyo ifilimu okanye ifilimu iya kunqanyulwa, iyanciphisa kakhulu impembelelo yayo yokuqinisa.
Ukuqinisekisa Ukufakwa kwamanzi kwisamente: Ukufakwa kwesamente kugalelwa amanzi.Iipropati zokugcina amanziye-cellulose ether iqinisekisa ukuba ngelixa i-polymer powder yenza ifilimu, i-samente iphinda ifumane amanzi aneleyo ukuze i-hydration epheleleyo, ngaloo ndlela iphuhlisa isiseko esihle samandla okuqala kunye nasemva kwexesha. Amandla avela kwi-cement hydration edibeneyo kunye nokuguquguquka kwefilimu ye-polymer sisiseko sokuphucula ukusebenza.
I-ether ye-cellulose iphucula ukusebenza (ukutyeba kunye nokungena emoyeni):
Ukutyebisa/Thixotropy: Iellulosi ethers zonyusa kakhulu ukungaguquguquki kunye ne-thixotropy yodaka (ingqindilili xa imile, ibhitye xa ishukunyiswa/isetyenziswa). Oku kuphucula ukuxhathisa kodaka ekujikeni (ukutyibilika phantsi komphezulu othe nkqo), kwenza ukuba kube lula ukusasazeka kunye nenqanaba, okukhokelela ekugqityweni okungcono.
Impembelelo yokungenisa umoya: I-ether yeCellulose inamandla athile okungenisa umoya, ingenisa amaqamza amancinci, afanayo kunye nazinzileyo.
Impembelelo kumgubo wepolymer:
Ukusasazwa okuphuculweyo: I-viscosity efanelekileyo inceda i-latex powder particles ihlakazeke ngakumbi ngokulinganayo kwinkqubo yodaka ngexesha lokuxuba kunye nokunciphisa i-agglomeration.
Ukusebenza okulungiselelwe: Iipropati ezilungileyo zokwakha kunye ne-thixotropy yenza i-mortar equkethe i-latex powder ibe lula ukuphatha, iqinisekisa ukuba ifakwe ngokulinganayo kwi-substrate, eyimfuneko ekusebenziseni ngokupheleleyo impembelelo yokudibanisa ye-latex powder kwi-interface.
I-Lubrication kunye ne-cushion effects of air bubbles: Amaqamza omoya afakiweyo asebenza njengeebheringi zebhola, ephucula ngakumbi ukuthambisa kunye nokusebenza kodaka. Kwangaxeshanye, ezi microbubbles buffer uxinzelelo ngaphakathi kodaka oluqinileyo, ukuxhasa isiphumo esomeleleyo somgubo welatex (nangona ukufakwa komoya okugqithisileyo kunokunciphisa amandla, ngoko ke ulungelelwaniso luyimfuneko).
I-polymer powder e-dispersible inikezela ngokubambisana okuguquguqukayo kunye nokuqiniswa (ukwenziwa kwefilimu kunye nokudibanisa):
Ukuqulunqwa kwefilimu yepolymer: Njengoko kukhankanyiwe ngaphambili, ngexesha lokumisa udaka, amasuntswana e-latex powder adibanisa kwifilimu eqhubekayo ye-polymer network network.
Impembelelo kwimatrix yodaka:
Ukubambisana okuphuculweyo: Ifilimu ye-polymer wraps kunye neebhuloho zeemveliso ze-cement hydration, iinqununu ze-samente ezingenayo i-hydrated, ii-fillers kunye ne-aggregates, ziphucula kakhulu amandla okudibanisa (ubumbano) phakathi kwamacandelo ngaphakathi komdaka.
Ukuguquguquka okuphuculweyo kunye nokumelana nokuqhekeka: Ifilimu yepolymer iguquguquka ngokwendalo kwaye i-ductile, inika udaka oluqinileyo amandla amakhulu okuguqula. Oku kwenza ukuba udaka lufumane ngcono kwaye lusasaze uxinzelelo olubangelwa utshintsho lweqondo lokushisa, utshintsho lomswakama, okanye ukufuduka okuncinci kwe-substrate, ukunciphisa kakhulu umngcipheko wokuqhekeka (ukuchasana nokuqhekeka).
Ukuphuculwa kokuchasana kwempembelelo kunye nokumelana nokunxiba: Ifilimu ye-polymer eguquguqukayo inokufunxa amandla empembelelo kwaye iphucule ukuchasana kwempembelelo kunye nokumelana nokunxiba kodaka.
Ukunciphisa i-elastic modulus: ukwenza udaka lube thambile kwaye lulungele ukuguqulwa kwe-substrate.
I-Latex powder iphucula ukuhlangana kobuso (uphuculo lwesinxibelelanisi):
Ukongezwa kwendawo esebenzayo ye-cellulose ethers: Ukugcinwa kwamanzi kwisiphumo se-cellulose ethers kunciphisa ingxaki "yokunqongophala kwamanzi adibeneyo" okubangelwa ukufunxa kwamanzi amaninzi yi-substrate. Okubaluleke ngakumbi, i-polymer powder particles / emulsions inomkhuba wokufudukela kwi-interface ye-mortar-substrate kunye ne-fiber-reinforcement fiber (ukuba ikhona) i-interface.
Ukwenza umaleko wojongano olomeleleyo: Ifilimu yepolymer eyenziwe kujongano ingena ngamandla kwaye ibambelele kwi-micropores ye-substrate (ukudibanisa ngokomzimba). Ngexesha elifanayo, i-polymer ngokwayo ibonisa ukunamathela okugqwesileyo (ikhemikhali / i-adsorption ye-physical) kwiintlobo ezahlukeneyo ze-substrates (ikhonkrithi, izitena, iinkuni, iibhodi ze-EPS / XPS zokufakela, njl.). Oku kwandisa kakhulu ukomelela kodaka lwebhondi (ukuncamathela) kwiisubstrates ezahlukeneyo, kokubini ekuqaleni nasemva kokuntywiliselwa emanzini nakwimijikelo yokunyibilika komkhenkce (ukuxhathisa amanzi kunye nokuxhathisa imozulu).
I-Synergistic optimization yesakhiwo sepore kunye nokuqina:
Iziphumo ze-cellulose ether: Ukugcinwa kwamanzi kwandisa i-cement hydration kunye nokunciphisa ii-pores ezikhululekile ezibangelwa ukunqongophala kwamanzi; isiphumo sokungenisa umoya sazisa iintunjana ezincinci ezilawulekayo.
Impembelelo yepolymer powder: I-polymer membrane ivala ngokuyinxenye okanye ibhuloho i-capillary pores, yenza isakhiwo se-pore sibe sincinci kwaye sincinci.
I-Synergistic Effect: Impembelelo edibeneyo yezi zinto zimbini iphucula isakhiwo se-pore sodaka, ukunciphisa ukufunxa kwamanzi kunye nokwandisa ukunganyangeki kwayo. Oku akuphuculi nje ukuqina kodaka (ukumelana nokunyibilika komkhenkce kunye nokumelana nomhlwa kwetyuwa), kodwa kucutha ukubakho kokwenzeka kwe-efflorescence ngenxa yokuncitshiswa kokufunxwa kwamanzi. Esi sakhiwo esiphuculweyo se-pore sikwadibaniswa namandla aphezulu.
I-ether yeCellulose zombini "isiseko" kunye "nesiqinisekiso": ibonelela ngemeko yokugcinwa kwamanzi eyimfuneko (ivumela i-samente hydration kunye nokwakheka kwefilimu ye-latex powder), ilungiselela ukusebenza kakuhle (ukuqinisekisa ukubekwa kodaka olufanayo), kwaye kuphembelela i-microstructure ngokujiya kunye nokungena emoyeni.
Redispersible latex powder zombini "i-enhancer" kunye "nebhulorho": yenza ifilimu ye-polymer phantsi kweemeko ezifanelekileyo ezenziwe yi-cellulose ether, iphucula kakhulu ukubumbana komdaka, ukuguquguquka, ukuxhathisa ukuqhekeka, amandla ebhondi, kunye nokuqina.
I-Core synergy: Umthamo wokugcina amanzi we-cellulose ether iyimfuneko yokuqulunqwa kwefilimu esebenzayo ye-latex powder. Ngaphandle kokugcinwa kwamanzi okwaneleyo, i-latex powder ayikwazi ukusebenza ngokupheleleyo. Ngokwahlukileyo, ukudityaniswa okuguquguqukayo kwe-latex powder kuphelisa i-brittleness, i-crack, kunye nokunganyaniseki ngokwaneleyo kwezinto ezicocekileyo ezisekelwe kwi-samente, kuphucula kakhulu ukuqina.
Iziphumo ezidibeneyo: Ezi zimbini zomeleza omnye komnye ekuphuculeni ubume bepore, ukunciphisa ukufunxa kwamanzi, kunye nokuphucula ukuqina kwexesha elide, okukhokelela kwimiphumo ye-synergistic. Ke ngoko, kwimibhobho yanamhlanje (njengezinto zokuncamathelisa iithayile, iplastikhi yokugquma yangaphandle/i-bonding mortars, ii-self-leveling mortars, ii-self-leveling mortars, kunye ne-decorative mortars), i-cellulose ethers kunye ne-dispersible polymer powders zihlala zisetyenziswa ngababini. Ngokulungelelanisa ngokuchanekileyo uhlobo kunye nedosi nganye, iimveliso zodaka ezikumgangatho ophezulu zinokuyilwa ukuhlangabezana neemfuno ezahlukeneyo zokusebenza. Isiphumo sabo se-synergistic sisitshixo sokuphucula udaka lwemveli lube yi-polymer-modified cementitious composites ezisebenza kakhulu.
Ixesha lokuposa: Aug-06-2025