Impushana ye-latex ehlakazeka kabusha nezinye izibophezelo ze-inorganic (njengosimende, i-lime e-slaked, i-gypsum, njll.) kanye nama-aggregate ahlukahlukene, ama-fillers nezinye izithasiselo (njenge-methyl hydroxypropyl cellulose ether, isitashi ether, i-lignocellulose, i-hydrophobic agent, njll.) ukuze kuhlanganiswe ngokomzimba ukwenza udaka oluxutshwe ne-dry-mixed. 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 ehlakazeka 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. Kamuva, udaka olumanzi oluqukethe i-latex powder dispersion lusetshenziswa endaweni yokusebenza. Ngokuncishiswa kwamanzi emazingeni amathathu - ukumuncwa kwe-base layer, ukusetshenziswa kwe-cement hydration reaction, kanye nokuvuthwa kwamanzi angaphezulu emoyeni, izinhlayiya ze-resin ziyasondela kancane kancane, i-interfaces kancane kancane ihlangana nomunye, futhi ekugcineni ibe 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 lwe-alkaline, ngoba luzokwenziwa i-saponified yi-alkali eyenziwe yi-cement hydration, futhi ngesikhathi esifanayo, i-adsorption yezinto ezifana ne-quartz izoyihlukanisa kancane kancane ohlelweni, ngaphandle kokuvikelwa kwe-hydrophilicity Colloids, engancibiliki emanzini futhi eyakhiwe yizimo zesikhathi esisodwa, i-dispersion yesikhathi esisodwa, i-dispersion yesikhathi esisodwa, hhayi kuphela ngaphansi kwe-dispersion eyomile, hhayi ngaphansi kwe-powder eyomile kuphela. izimo zokucwiliswa emanzini isikhathi eside. Ezinhlelweni ezingezona ze-alkali, njengezinhlelo ze-gypsum noma amasistimu anama-filler kuphela, ngenxa yesizathu esithile i-colloid evikelayo isekhona ingxenye yefilimu yokugcina ye-polymer, ethinta ukumelana kwamanzi kwefilimu, kodwa ngenxa yokuthi lezi zinhlelo azisetshenziselwa Uma kwenzeka ukucwiliswa isikhathi eside emanzini, futhi i-polymer isenezici zayo eziyingqayizivele, ayithinti ukusetshenziswa kwalezi zinhlelo ze-redisper late.
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 nendawo eqinile. Ukuxhumana okuguquguqukayo. Lolu hlobo lokuxhumana lungacatshangwa njengoluxhunywe kuhlaka lwamathambo oluqinile yimithombo eminingi emincane. 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 esinjengesimende, ukukhubazeka kodaka kuyathuthukiswa, futhi umphumela wokucindezeleka okuhlakazekayo uthuthukiswa kakhulu, ngaleyo ndlela kuthuthukisa ukumelana nokuqhekeka kodaka.
Isikhathi sokuthumela: Mar-07-2023