Njengamanje, i-latex powder ehlakazeka kabusha idlale indima ebalulekile njengesengezo sodaka lokwakha. Ukwengeza impushana ye-latex ehlakazeka kabusha odakeni kungalungisa imikhiqizo ehlukahlukene yodaka efana nokunamathiswa kwamathayela, udaka olushisayo olushisayo, udaka oluzilinganisa, i-putty, udaka olukhonkolo, udaka lokuhlobisa, i-ejenti ekhombayo, udaka lokulungisa kanye nezinto zokuvala ezingangeni manzi. Ububanzi besicelo kanye nokusebenza kokufakwa kodaka lokwakha.
Ukwakhiwa kwefilimu ye-polymer eqhubekayo kubaluleke kakhulu ekusebenzeni kwezisimende ze-polymer-modified Cement. Ngesikhathi sokusetha nokuqinisa inqubo yokunamathisela usimende, kuzokwenziwa izimbotshana eziningi ngaphakathi, eziba izingxenye ezibuthakathaka zokunamathisela usimende. Ngemuva kokuthi i-latex powder ye-redispersible yengezwe, i-latex powder izohlakazeka ngokushesha ibe i-emulsion lapho ihlangana namanzi, futhi iqoqe endaweni enamanzi amaningi (okungukuthi, emgodini). Njengoba unamathisela usimende setha futhi uqina, ukunyakaza kwezinhlayiya ze-polymer kuya ngokuya kube nemingcele, futhi ukungezwani kobuso phakathi kwamanzi nomoya kuyawaphoqa ukuthi aqondane kancane kancane. Lapho izinhlayiya ze-polymer zihlangana nomunye nomunye, inethiwekhi yamanzi iyahwamuka ngokusebenzisa ama-capillaries, futhi i-polymer yakha ifilimu eqhubekayo ezungeze umgodi, iqinisa lezi zindawo ezibuthakathaka. Ngalesi sikhathi, ifilimu ye-polymer ayikwazi ukudlala indima ye-hydrophobic kuphela, kodwa futhi ingavimbeli i-capillary, ukuze impahla ibe ne-hydrophobicity enhle kanye nokuphefumula komoya.
Udaka lukasimende olungenayo i-polymer luxhunywe ngokukhululekile ndawonye. Ngokuphambene nalokho, udaka lukasimende oluguquliwe lwe-polymer lwenza lonke udaka luxhunywe ngokuqinile ngenxa yokuba khona kwefilimu ye-polymer, ngaleyo ndlela ithola izakhiwo ezingcono zemishini kanye nobulili bokumelana nesimo sezulu. Odakeni lukasimende oluguquliwe lwe-latex powder, impushana ye-latex izokhuphula i-porosity yesigxobo sikasimende, kodwa inciphise ukuqina kwendawo yokuguqula isixhumi esibonakalayo phakathi kokunamathisela usimende kanye nokuhlanganisa, okuholela ekutheni i-porosity iyonke yodaka ngokuyisisekelo ingashintshile. Ngemuva kokuthi i-latex powder yenziwe ifilimu, ingavimba kangcono ama-pores odakeni, okwenza ukwakheka kwendawo yokuguqula isikhombimsebenzisi phakathi kokunamathisela usimende kanye ne-aggregate kuminyene kakhulu, futhi ukumelana nokuqina kwe-latex powder modified mortar kuyathuthukiswa. , kanye nekhono lokumelana nokuguguleka kwemithombo yezindaba eyingozi liyathuthukiswa. Kunomthelela omuhle ekuthuthukiseni ukuqina kodaka.
Isikhathi sokuthumela: Feb-20-2023