I-emulsion powder ekugqibeleni yenza ifilimu ye-polymer, kwaye inkqubo eyenziwe nge-inorganic kunye ne-organic binder structures yenziwa kwi-mortar ephilisiwe, oko kukuthi, i-skeleton e-brittle kunye ne-hard skeleton eyenziwe ngezinto ze-hydraulic, kunye nefilimu eyenziwe ngumgubo we-latex odispersible kwi-gap. kunye nomphezulu oqinileyo.inethiwekhi ebhetyebhetye.Amandla okuqina kunye nokubambisana kwefilimu ye-polymer resin eyenziwe ngumgubo we-latex iphuculwe.Ngenxa yokuguquguquka kwepolymer, isakhono sokuguqulwa siphezulu kakhulu kunokwakheka kwelitye le-samente, ukusebenza kwe-deformation yodaka kuphuculwe, kwaye umphumo wokusabalalisa uxinzelelo uphuculwe kakhulu, ngaloo ndlela kuphuculwe ukuxhathisa kokuqhekeka kodaka. .Ngokunyuka komxholo womgubo we-latex ophinda uhlawulwe, yonke inkqubo iphuhlisa kwiplastiki.Kwimeko yomxholo ophezulu we-latex powder, isigaba se-polymer kumdaka ophilisiwe ngokuthe ngcembe udlula isigaba semveliso ye-inorganic hydration, kwaye udaka luya kutshintsha umgangatho kwaye lube yi-elastomer, ngelixa imveliso ye-hydration ye-samente iba "i-filler".“.
Amandla anqabileyo, u-elasticity, ukuguquguquka kunye nokutywinwa kodaka oluguqulwe ngumgubo we-latex ophindwe kabini zonke ziphuculwe.Ukudityaniswa komgubo we-latex ophinda uhlawulwe kuvumela ifilimu ye-polymer (ifilimu ye-latex) ukuba yenze kwaye yenze inxalenye yodonga lwe-pore, ngaloo ndlela itywina isakhiwo esiphezulu se-porosity yodaka.I-latex inwebu inomatshini wokuzolula okhupha uxinzelelo apho ibotshelelwe kudaka.Ngala mandla angaphakathi, udaka lugcinwa lulonke, ngaloo ndlela lukhulisa amandla adibeneyo odaka.Ubukho beepolymers eziguquguqukayo kakhulu kunye ne-elastic elasticity kuphucula ukuguquguquka kunye nokunwebeka kodaka.Indlela yokunyuka koxinzelelo lwesivuno kunye namandla angaphumeleli ngolu hlobo lulandelayo: xa kusetyenziswe amandla, i-microcracks ibambezeleka kuze kube yilapho uxinzelelo oluphezulu lufikelelwa ngenxa yokuphucula ukuguquguquka kunye nokuqina.Ukongeza, imimandla yepolymer ephothiweyo iphinda ithintele ukudityaniswa kwee-microcracks kwiintanda ezigqobhozayo.Ke ngoko, i-polymer powder ehlaziywayo iphucula uxinzelelo lokungaphumeleli kunye nokungaphumeleli koxinzelelo lwezinto.
Ifilimu ye-polymer kwi-polymer modified mortar inefuthe elibaluleke kakhulu kwi-hard mortar.I-latex powder ehlaziywayo isasazwa kwi-interface idlala enye indima ebalulekileyo emva kokuchithwa kunye nokwenza ifilimu, oko kukwandisa ukunamathela kwizinto ezidibeneyo.Kwi-microstructure yepolymer yomgubo oguquliweyo wethayile yodaka kunye nojongano lwethayile, ifilimu eyenziwe yipolymer yenza ibhulorho phakathi kweethayile ze-vitrified kunye nokufunxwa kwamanzi aphantsi kakhulu kunye ne-matrix yodaka lwesamente.Indawo yoqhagamshelwano phakathi kwezinto ezimbini ezingafaniyo yindawo enobungozi kakhulu yokuqhekeka kweentanda kwaye kukhokelela ekulahlekeni kokubambisana.Ke ngoko, ukukwazi kweefilimu ze-latex ukuphilisa iintanda ze-shrinkage kubaluleke kakhulu kwi-adhesives tile.
Ixesha lokuposa: Mar-06-2023