I-latex powder ekugqibeleni yenza ifilimu ye-polymer, kwaye inkqubo eyenziwe nge-inorganic kunye ne-organic binder structures yenziwa kudaka olunyangisiweyo, oko kukuthi, i-skeleton e-brittle kunye neqinile 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 we-latex powder ephindayo, 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 odispersible kuvumela ifilimu ye-polymer (ifilimu yelatex) ukuba yenze kwaye yenze inxalenye yodonga lwepore, ngaloo ndlela itywine 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 kwaye zinwebeka kakhulu ziphucula ukuguquguquka kunye nokuqina kodaka.Indlela yokunyuka koxinzelelo lwesivuno kunye namandla angaphumeleli ngolu hlobo lulandelayo: xa kunyanzeliswa amandla, i-microcracks ilibazisekile kuze kube yilapho uxinzelelo oluphezulu lufikelelwa ngenxa yokuphucula ukuguquguquka kunye nokuqina.Ukongeza, imimandla yepolymer ephothiweyo iphinda ithintele ukudityaniswa kwee-microcracks kwiintanda ezigqobhozayo.Ngoko ke, i-polymer powder ehlaziywayo iphucula uxinzelelo lokungaphumeleli kunye nokungaphumeleli kwezinto eziphathekayo.
Ifilimu ye-polymer kwi-polymer modified mortar inefuthe elibaluleke kakhulu kwi-hard mortar.I-latex powder edibeneyo 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 ezinevitrified 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: Apr-10-2023