Impushana ye-latex ehlakazeka kabusha nosimende yizinto eziyinhloko ezibophayo kanye nezakha ifilimu ze-putty engangeni emanzini.Umgomo wokumelana namanzi uthi:
Phakathi nenqubo yokuxuba kabusha i-latex powder kanye nosimende, i-latex powder ibuyiselwa ngokuqhubekayo efomini lokuqala le-emulsion, futhi izinhlayiya ze-latex zihlakazeka ngokufanayo ku-slurry ye-cement.Ngemuva kokuthi usimende uhlangane namanzi, ukusabela kwe-hydration kuyaqala, isisombululo se-Ca (OH) 2 sigcwele futhi amakristalu ayancishiswa, futhi amakristalu e-ettringite kanye ne-hydrated calcium silicate colloids yakheka ngesikhathi esifanayo, futhi izinhlayiya ze-latex zifakwe ejeli futhi engenawo amanzi.phezu kwezinhlayiya zikasimende.
Ngokuqhubeka kokusabela kwe-hydration, imikhiqizo ye-hydration iyaqhubeka nokwanda, futhi izinhlayiya ze-latex kancane kancane ziqoqana ku-voids yezinto ezingaphili ezifana nosimende, futhi zakha ungqimba olugcwele ngokuqinile ebusweni bejeli yesimende.Ngenxa yokuncipha kancane kancane komswakamo owomile, izinhlayiya ze-latex ezihlakazekile kabusha ezipakishwe ngokuqinile kujeli kanye ne-voids ziyanqwabelana ukuze zenze ifilimu eqhubekayo, zenze ingxube yesigxobo sikasimende esine-interpenetrating matrix, futhi zenze usimende unamathisele nelinye ithambo eliyimpuphu linamathiselwe komunye nomunye. .Ngenxa yokuthi izinhlayiya ze-latex ziyajiya futhi zenze ifilimu endaweni yokuguquka kwesimo sikasimende nezinye izimpushana, indawo eguquguqukayo yobuso besistimu ye-putty iminyene kakhulu, ngaleyo ndlela ithuthukise ukumelana kwayo namanzi.
Ngasikhathi sinye, amaqembu asebenzayo akhiqizwe impushana ye-latex ehlakazeka kabusha ngemuva kokuhlakazeka kabusha, njenge-monomer methacrylic acid esebenzayo eyethulwa ngesikhathi kuhlanganiswa i-emulsion, aqukethe amaqembu e-carboxyl, angaxhumanisa ne-Ca2+, Al3+, njll. usimende esindayo calcium hydration umkhiqizo., yakha ibhondi yebhuloho ekhethekile, ithuthukise ukwakheka komzimba wodaka lukasimende oluqinile lomzimba, futhi ithuthukise ukubumbana kwesixhumi esibonakalayo se-putty.Izinhlayiya ze-latex ezihlakazekile zakha ifilimu eqhubekayo neminyene ku-voids yesistimu ye-putty.
Isikhathi sokuthumela: Nov-01-2022