I-Emulsion kunye ne-latex powder ehlaziywayo inokwenza amandla aphezulu kunye namandla okudibanisa kwizinto ezahlukeneyo emva kokubunjwa kwefilimu, zisetyenziselwa njengesibini isibophelelo sodaka ukudibanisa ne-samente ye-inorganic binder, i-samente kunye ne-polymer ngokulandelelana Nika umdlalo opheleleyo kumandla ahambelanayo ukusebenza kodaka.
Ngokuqwalasela i-microstructure ye-polymer-cement composite material, kukholelwa ukuba ukongezwa kwe-latex powder edibeneyo kunokwenza ukuba i-polymer yenze ifilimu kwaye ibe yinxalenye yodonga lomngxuma, kwaye yenze udaka lube yinto yonke ngokusebenzisa amandla angaphakathi. ephucula amandla angaphakathi odaka. Amandla epolymer, ngaloo ndlela aphucula ukungaphumeleli koxinzelelo lodaka kunye nokwandisa uxinzelelo lokugqibela.
I-microstructure ye-polymer kwi-mortar ayizange itshintshe ixesha elide, kwaye igcina i-bonding ezinzileyo, i-flexural and compressive strength, kunye ne-hydrophobicity enhle. Indlela yokwenza i-latex powder ehlaziywayo kwi-adhesives ye-tile ifumene ukuba emva kokuba i-polymer yomile kwifilimu, ifilimu ye-polymer yenza uxhulumaniso oluguquguqukayo phakathi kodaka kunye nethayile kwelinye icala, kwaye kwelinye icala, i-polymer kwifilimu. udaka olutsha Yandisa umxholo womoya wodaka kwaye uchaphazele ukubunjwa kunye nokumanzi komphezulu, kwaye ke ngexesha lenkqubo yokumisela, i-polymer nayo inefuthe elingcono kwinkqubo ye-hydration kwaye Ukuncipha kwesamente kwi-binder, eya kuba negalelo ekuphuculeni amandla eBond anoncedo olungcono.
Ukongeza umgubo we-latex ophinda uhlawulwe kwidaka kunokuphucula kakhulu amandla okudibanisa kunye nezinye izinto, kuba i-hydrophilic latex powder kunye nesigaba solwelo sokumiswa kwesamente singena kwiipores kunye ne-capillaries ye-matrix, kwaye i-latex powder ingena kwi-pores kunye ne-capillaries. . Ifilimu yangaphakathi yenziwe kwaye igxininiswe ngokuqinileyo kumphezulu we-substrate, ngaloo ndlela iqinisekisa amandla okubambisana okuhle phakathi kwezinto ze-cementitious kunye ne-substrate.
Ukulungiswa kwe-latex powder ekusebenzeni kodaka kubangelwa ukuba i-latex powder iyipolymer ephezulu ye-molecular kunye namaqela e-polar. Xa i-latex powder ixutywe kunye neengqungquthela ze-EPS, icandelo elingekho kwi-polar kwikhonkco eliphambili le-polymer ye-latex powder iya kuba I-adsorption ye-Physical iya kwenzeka kunye ne-non-polar surface ye-EPS. Amaqela e-polar kwi-polymer ajoliswe ngaphandle kwinqanaba le-EPS, ukwenzela ukuba iinqununu ze-EPS zitshintshe ukusuka kwi-hydrophobicity ukuya kwi-hydrophilicity. Ngenxa yokuguqulwa kobuso beengqungquthela ze-EPS nge-latex powder, ixazulula ingxaki yokuba iinqununu ze-EPS zibonakaliswe ngokulula emanzini. Ukudada, ingxaki yokwaleka okukhulu kodaka. Ngeli xesha, xa i-samente yongezwa kwaye ixutywe, amaqela e-polar adsorbed kumphezulu weengqungquthela ze-EPS zidibanisa kunye neengqungquthela ze-cement kwaye zidibanise ngokusondeleyo, ukwenzela ukuba ukusebenza kodaka lwe-EPS kuphuculwe kakhulu. Oku kubonakaliswa kwinto yokuba iinqununu ze-EPS zimanziswa ngokulula nge-samente paste, kwaye amandla okudibanisa phakathi kwezi zibini aphuculwe kakhulu.
Ixesha lokuposa: Mar-18-2023