Impushana ye-emulsion ekugcineni yakha ifilimu ye-polymer, futhi uhlelo olwakhiwe ngezinto ezihlanganisa izinto ezingaphili kanye ne-organic binder kwakheka odakeni olulashiwe, okungukuthi, uhlaka lwamathambo oluphukayo noluqinile olwakhiwe ngezinto ezisebenza nge-hydraulic, kanye nefilimu eyakhiwe yimpushana ye-latex ehlakazeka kabusha esikhaleni. kanye nendawo eqinile. inethiwekhi eguquguqukayo. Amandla aqinile kanye nokuhlangana kwefilimu ye-polymer resin eyakhiwe yi-latex powder kuyathuthukiswa. Ngenxa yokuguquguquka kwe-polymer, amandla okuguqula aphakeme kakhulu kunesakhiwo esiqinile samatshe usimende, ukusebenza kwe-deformation yodaka kuyathuthukiswa, futhi umphumela wokuhlakazeka kwengcindezi uthuthukiswa kakhulu, ngaleyo ndlela kuthuthukiswe ukumelana nokuqhekeka kodaka. . Ngokukhula kokuqukethwe kwempushana ye-latex ehlakazeka kabusha, lonke uhlelo luthuthukela kupulasitiki. Endabeni yokuqukethwe okuphezulu kwe-latex powder, isigaba se-polymer odakeni oluphulukisiwe kancane kancane sidlula isigaba somkhiqizo we-inorganic hydration, futhi udaka luzoshintsha ikhwalithi futhi lube i-elastomer, kuyilapho umkhiqizo we-hydration kasimende uba "ukugcwalisa". “.
Amandla aqinile, ukuqina, ukuguquguquka kanye nokuvaleka kodaka oluguquliwe yi-latex powder ehlakazeka kabusha konke kuyathuthukiswa. Ukuhlanganiswa kwempushana ye-latex ehlakazeka kabusha kuvumela ifilimu ye-polymer (ifilimu ye-latex) ukuthi yakhe futhi yakhe ingxenye yodonga lwezimbotshana, ngaleyo ndlela ivale ukwakheka okuphezulu kwe-porosity yodaka. Ulwelwesi lwe-latex lunomshini wokuzelula osebenza kanzima lapho luboshelwe odakeni. Ngala mandla angaphakathi, udaka lugcinwa lulonke, ngaleyo ndlela lukhulise amandla okuhlangana kodaka. Ukuba khona kwama-polymers aguquguquka kakhulu futhi anwebeka kakhulu kuthuthukisa ukuguquguquka nokunwebeka kodaka. Indlela yokwanda kokucindezeleka kwesivuno namandla okuhluleka ingokulandelayo: lapho kusetshenziswa amandla, ama-microcracks abambezeleka kuze kufinyelelwe ukucindezeleka okuphezulu ngenxa yokuguquguquka okuthuthukisiwe nokunwebeka. Ukwengeza, izizinda ze-polymer ezihlanganisiwe futhi zivimbela ukuhlangana kwama-microcracks emifantwini engena. Ngakho-ke, i-polymer powder ehlakazeka kabusha ithuthukisa ukucindezelwa kokuhluleka kanye nokwehluleka kokusebenza kwezinto.
Ifilimu ye-polymer ku-polymer modified mortar inomphumela obaluleke kakhulu kudaka oluqinile. I-latex powder ehlakazeka kabusha esatshalaliswa kusixhumi esibonakalayo idlala enye indima ebalulekile ngemva kokuhlakazwa kanye nokwenza ifilimu, okuwukwandisa ukunamathela ezintweni ezithintwayo. Kusakhiwo esincane sepolymer eyimpushana eguquliwe yodaka lwebhondi yethayela nesixhumi esibonakalayo sethayela, ifilimu elakhiwe i-polymer lakha ibhuloho phakathi kwamathayili aqinisekisiwe anokumunca amanzi aphansi kakhulu kanye ne-matrix yodaka lukasimende. Indawo yokuxhumana phakathi kwezinto ezimbili ezingafani iyindawo eyingozi kakhulu yokuthi yakheke imifantu eshwabene futhi iholele ekulahlekeni kokuhlangana. Ngakho-ke, ikhono lamafilimu e-latex lokuphulukisa imifantu ye-shrinkage libaluleke kakhulu kuma-adhesive tile.
Isikhathi sokuthumela: Mar-06-2023