I-latex powder kunye nesamente enokuphinda ihlakazwe zezona zinto zidibanisayo kunye nefilimu-ezenza i-putty enganyangekiyo emanzini. Umgaqo-siseko wokunganyangeki kwamanzi ngulo:
Ngethuba lenkqubo yokuxuba i-latex powder kunye ne-samente, i-latex powder ibuyiselwa ngokuqhubekayo kwifom ye-emulsion yasekuqaleni, kwaye iinqununu ze-latex zihlakazwa ngokufanayo kwi-sement slurry. Emva kokuba i-samente idibana namanzi, i-hydration reaction iqala, isisombululo se-Ca (OH) i-2 igcwele kwaye i-crystals iyancipha, kwaye i-crystals ettringite kunye ne-hydrated calcium silicate colloids yenziwe ngexesha elifanayo, kwaye iinqununu ze-latex zifakwe kwi-gel kwaye engenamanzi. kumasuntswana esamente.
Ngenkqubela phambili ye-hydration reaction, iimveliso ze-hydration ziyaqhubeka zikhula, kwaye i-latex particles ngokuthe ngcembe iqokelela kwi-voids ye-inorganic materials njenge-samente, kwaye yenze i-tightly packed layer on the surface of the sement gel. Ngenxa yokuncipha kancinci kokufuma okomileyo, amasuntswana elatex aphinde asasazwa apakishwe ngokuqinileyo kwijeli kunye ne-voids aggregate ukwenza ifilimu eqhubekayo, yenze umxube kunye nentlama yesamente engenelelayo yematrix, kwaye yenza intlama yesamente kunye nelinye ithambo lomgubo lincanyathiselwe omnye komnye. . Ngenxa yokuba amasuntswana e-latex adibana kwaye enze ifilimu kwindawo yokutshintsha kwesamente kunye nezinye iipowders, indawo yokutshintsha kwenkqubo ye-putty ixinene ngakumbi, ngaloo ndlela iphucula ukuxhathisa kwamanzi.
Kwangaxeshanye, amaqela asebenzayo aveliswa ngumgubo welatex odispersible emva kokusasazwa kwakhona, njengemonomer methacrylic acid esebenzayo eyaziswa ngexesha lokwenziwa kwe-emulsion, iqulathe amaqela e-carboxyl, anokudibanisa i-Ca2+, Al3+, njl. isamente imveliso ye-calcium hydration enzima. , yenza ibhondi ekhethekileyo yebhulorho, uphucule ukwakheka komzimba wodaka lwesamente lukhuni umzimba, kunye nokuphucula ukubumbana kwe-putty interface. Iingqungquthela ze-latex ezichithwa ngokutsha zenza ifilimu eqhubekayo kunye ne-dense kwi-voids ye-putty system.
Ixesha lokuposa: Nov-01-2022