Impushana ye-latex ehlakazeka kabusha nezinye izibophezelo ze-inorganic (ezifana nosimende, i-lime e-slaked, i-gypsum, njll.) kanye nama-aggregate ahlukahlukene, izigcwalisi nezinye izithasiselo (njenge-methyl hydroxypropyl cellulose ether, isitashi ether, i-lignocellulose, i-hydrophobic agent, njll.) ukuze kuxutshwe ngokomzimba ukwenza udaka oluxubile.Lapho udaka oluxutshwe okomile lwengezwa emanzini futhi lunyakaziswa, izinhlayiya ze-latex powder zizohlakazwa emanzini ngaphansi kwesenzo se-hydrophilic protective colloid kanye ne-shear mechanical.Isikhathi esidingekayo ukuze i-latex powder evamile ephinde ihlakazwe ihlakazeke sifushane kakhulu, futhi le nkomba yesikhathi sokuphinda ihlakazeke futhi iyipharamitha ebalulekile yokuhlola ikhwalithi yayo.Esikhathini sokuqala sokuxuba, i-latex powder isivele iqalile ukuthinta i-rheology nokusebenza kodaka.
Ngenxa yezici ezihlukene kanye nokuguqulwa kwe-latex powder ngayinye ehlukanisiwe, lo mphumela ubuye uhluke, ezinye zinomphumela wokusiza ukugeleza, kanti ezinye zinomphumela okhulayo we-thixotropy.Indlela yethonya layo ivela ezicini eziningi, kuhlanganise nomthelela we-latex powder ebudlelwaneni bamanzi ngesikhathi sokuhlakazeka, ithonya le-viscosity ehlukene ye-latex powder ngemva kokuhlakazeka, ithonya le-colloid evikelayo, kanye nomthelela we-cement namabhande amanzi.Amathonya ahlanganisa ukwanda kokuqukethwe komoya odakeni kanye nokusatshalaliswa kwamabhamuza omoya, kanye nomthelela wezithasiselo zawo kanye nokusebenzelana nezinye izithasiselo.Ngakho-ke, ukukhethwa okwenziwe ngokwezifiso nokuhlukanisiwe kwe-latex powder ephindayo kuyindlela ebalulekile yokuthinta ikhwalithi yomkhiqizo.Umbono ovame kakhulu ukuthi i-latex powder ephindwe kabusha ivame ukwandisa okuqukethwe komoya wodaka, ngaleyo ndlela igcobe ukwakhiwa kodaka, kanye nokuhambisana kanye ne-viscosity ye-latex powder, ikakhulukazi i-colloid evikelayo, emanzini lapho ihlakazeka. Ukwanda kokugxila kusiza ukuthuthukisa ukuhlangana kodaka lokwakha, ngaleyo ndlela kuthuthukise ukusebenza kodaka.Kamuva, udaka olumanzi oluqukethe i-latex powder dispersion lusetshenziswa endaweni yokusebenza.Ngokuncishiswa kwamanzi emazingeni amathathu - ukumuncwa kongqimba oluyisisekelo, ukusetshenziswa kukasimende hydration reaction, kanye nokushibilika kwamanzi angaphezulu emoyeni, izinhlayiya ze-resin ziyasondela kancane kancane, izixhumanisi zihlangana kancane kancane, futhi ekugcineni zibe. ifilimu ye-polymer eqhubekayo.Le nqubo yenzeka ikakhulukazi ezimbotsheni zodaka nangaphezulu kokuqinile.
Kufanele kugcizelelwe ukuthi ukuze wenze le nqubo ingenakuhlehliswa, okungukuthi, lapho ifilimu ye-polymer ihlangana namanzi futhi, ngeke iphinde ihlakazeke, futhi i-colloid evikelayo ye-latex powder ehlakazekayo kufanele ihlukaniswe ohlelweni lwefilimu ye-polymer.Lokhu akuyona inkinga ohlelweni lodaka lukasimende lwe-alkaline, ngoba luzokwenziwa i-alkali ekhiqizwe i-samente hydration, futhi ngesikhathi esifanayo, i-adsorption yezinto ezifana ne-quartz izoyihlukanisa kancane kancane ohlelweni, ngaphandle kokuvikelwa i-hydrophilicity Colloids, engancibiliki emanzini futhi eyakhiwe ukuhlakazwa kwesikhathi esisodwa kwe-latex powder ehlakazeka kabusha, ayikwazi ukusebenza kuphela ngaphansi kwezimo ezomile, kodwa nangaphansi kwezimo zokucwiliswa kwamanzi isikhathi eside.Ezinhlelweni ezingezona eze-alkali, njengezinhlelo ze-gypsum noma amasistimu anama-filler kuphela, ngenxa yesizathu esithile i-colloid evikelayo isekhona ngokwengxenye kufilimu ye-polymer yokugcina, ethinta ukumelana kwamanzi kwefilimu, kodwa ngenxa yokuthi lezi zinhlelo azisetshenziselwa icala lokucwiliswa isikhathi eside emanzini, futhi i-polymer isenezici zayo eziyingqayizivele zemishini, akuthinti ukusetshenziswa kwe-latex powder ehlakazeka kabusha kulezi zinhlelo.
Ngokwakhiwa kwefilimu yokugcina ye-polymer, uhlelo lohlaka olwakhiwe ngezibophezelo ze-inorganic kanye ne-organic kwakheka odakeni olulashiwe, okungukuthi, izinto ezisebenza nge-hydraulic zakha uhlaka oluqinile futhi oluqinile, futhi i-latex powder ehlakazekayo yakha ifilimu phakathi kwegebe kanye indawo eqinile.Ukuxhumana okuguquguqukayo.Lolu hlobo lokuxhumana lungacatshangwa njengoluxhunywe kuhlaka lwamathambo oluqinile yiziphethu ezincane eziningi.Njengoba amandla aqinile efilimu ye-polymer resin eyakhiwe yi-latex powder ngokuvamile i-oda lobukhulu obuphakeme kunaleyo yezinto ezisetshenziswa ngamanzi, amandla odaka ngokwawo angathuthukiswa, okungukuthi, ukuhlangana kungathuthukiswa.Njengoba ukuguquguquka nokukhubazeka kwe-polymer kuphakeme kakhulu kunesakhiwo esiqinile esifana nosimende, ukukhubazeka kodaka kuyathuthukiswa, futhi umphumela wokucindezeleka okuhlakazekayo uthuthukiswa kakhulu, ngaleyo ndlela kuthuthukisa ukumelana nokuqhekeka kodaka.
Isikhathi sokuthumela: Mar-07-2023