Impushana ye-polymer ehlakazekayo nezinye izibophezelo ze-inorganic (ezifana nosimende, i-lime e-slaked, i-gypsum, njll.) kanye nama-aggregate ahlukahlukene, izithasiselo nezinye izithasiselo (njenge-methyl hydroxypropyl cellulose ether, isitashi ether, i-lignocellulose, i-hydrophobic Agents, njll.) zixutshwa ngokomzimba ukwenza udaka oluxutshwe nodaka. Lapho udaka oluxubekile olomile luxubene namanzi, ngaphansi kwesenzo se-hydrophilic protective colloid kanye nokugunda kwemishini, izinhlayiya ze-latex powder zizohlakazeka emanzini.
Ngenxa yezici ezihlukene kanye nokuguqulwa kwe-latex powder ngayinye ehlukanisiwe, lo mphumela ubuye uhluke, abanye banomphumela wokukhuthaza ukugeleza, kanti abanye banomphumela wokwandisa i-thixotropy. Indlela yethonya layo ivela ezicini eziningi, kuhlanganise nomthelela we-latex powder ebudlelwaneni bamanzi ngesikhathi sokuhlakazeka, ithonya le-viscosity ehlukene ye-latex powder ngemva kokuhlakazwa, ithonya le-colloid evikelayo, kanye nomthelela we-cement nebhande lamanzi. Umthelela walezi zici ezilandelayo uhlanganisa ithonya ekwandeni kokuqukethwe komoya wodaka kanye nokusatshalaliswa kwamabhamuza omoya, kanye nomthelela wezithasiselo zawo kanye nokuxhumana nezinye izithasiselo. Ngakho-ke, ukukhethwa okwenziwe ngokwezifiso nokuhlukaniswa kweziqephu ze-polymer powder ezihlakazeka kabusha kuyindlela ebalulekile yokuthinta ikhwalithi yomkhiqizo. Phakathi kwazo, umbono ovame kakhulu ukuthi i-polymer powder ehlakazekayo ivame ukwandisa okuqukethwe komoya wodaka, ngaleyo ndlela igcobe ukwakhiwa kodaka, kanye nokuhambisana kanye ne-viscosity ye-polymer powder, ikakhulukazi lapho i-colloid evikelayo ihlakazeka, emanzini. Ukwanda kwe-α kunomthelela ekwenzeni ngcono ukuhlangana kodaka lokwakha, ngaleyo ndlela kuthuthukise ukusebenza kodaka. Kamuva, udaka olumanzi oluqukethe i-latex powder dispersion lusetshenziswa endaweni yokusebenza. Ngokuncishiswa komswakama emazingeni amathathu - ukumuncwa kwesendlalelo sesisekelo, ukusetshenziswa kwe-sement hydration reaction, kanye nokuvuthwa komswakama ongaphezulu emoyeni, izinhlayiya ze-resin zisondela kancane kancane, isikhombimsebenzisi sihlangana kancane kancane, futhi ekugcineni sibe 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 ingaphinde ihlakazeke lapho iphinda ihlangana namanzi, i-colloid evikelayo ye-polymer powder ehlakazeka kabusha kufanele ihlukaniswe nesistimu yefilimu ye-polymer. Lokhu akuyona inkinga ohlelweni lwe-alkaline sement mortar, ngoba luzokwenziwa i-saponified yi-alkali ekhiqizwe i-hydration kasimende, futhi ngesikhathi esifanayo, i-adsorption yezinto ze-quartz izoyihlukanisa kancane kancane ohlelweni ngaphandle kokuvikelwa kwe-hydrophilic. I-Colloid, ifilimu engancibiliki emanzini futhi eyakhiwe ukuhlakazwa kwesikhathi esisodwa kwe-latex powder ehlakazeka kabusha, ayikwazi ukusebenza kuphela ngaphansi kwezimo ezomile, kodwa nangaphansi kwezimo zokucwiliswa isikhathi eside emanzini. Ezinhlelweni ezingezona ze-alkali, njengezinhlelo ze-gypsum noma amasistimu anama-filler kuphela, ama-colloid avikelayo asekhona ingxenye yefilimu yokugcina ye-polymer ngesizathu esithile, okuthinta ukumelana kwamanzi kwefilimu, kodwa njengoba lezi zinhlelo azisetshenziselwa Uma kwenzeka ukucwiliswa isikhathi eside emanzini, futhi i-polymer isenezici zayo eziyingqayizivele zemishini, ayithinti ukusetshenziswa kwalezi zinhlelo ze-polymer ezihlakazekayo.
Isikhathi sokuthumela: Apr-25-2024