Udaka lwe-EPS lwegranular ukugquma kwe-thermal yinto ekhaphukhaphu yokufakelwa kwe-thermal exutywe ne-inorganic binder, i-organic binder, i-admixture, i-admixture kunye ne-aggregate yokukhanya ngokomlinganiselo othile. Kuphando lwangoku kunye nokusetyenziswa kwe-EPS particle insulation mortar, i-recyclable redispersible latex powder inempembelelo enkulu ekusebenzeni kodaka kwaye ithatha umlinganiselo ophezulu kwiindleko, ngoko ibisoloko igxininisekile. Ukusebenza kwe-EPS ye-particle thermal insulation mortar yangaphandle yodonga lwe-thermal insulation system ivela ikakhulu kwi-polymer binder, kwaye icandelo layo liyi-vinyl acetate / ethylene copolymer. Olu hlobo lwe-emulsion ye-polymer inokutshizwa-yomiswe ukuze ifumane i-latex powder ephindwe kabini. Ngenxa yokulungiswa okuchanekileyo kwe-latex powder ekwakhiweni, ukuthuthwa okufanelekileyo kunye nokugcinwa okufanelekileyo, umgubo okhululekileyo weepolymers uye waba yindlela yophuhliso ngenxa yokulungiswa kwayo okuchanekileyo, ukuthutha okufanelekileyo kunye nokugcinwa kakuhle. Ukusebenza kwe-EPS particle insulation mortar kuxhomekeke kakhulu kuhlobo kunye nobungakanani bepolymer esetyenzisiweyo. I-Ethylene-vinyl acetate latex powder (EVA) enomxholo ophezulu we-ethylene kunye ne-Tg ephantsi (i-glass transition temperature) inexabiso elingcono ngokubhekiselele kumandla empembelelo, amandla ebhondi kunye nokuchasana kwamanzi.
Ukulungelelaniswa kokusebenza kwe-latex powder edibeneyo kwi-mortar kubangelwa ukuba i-polymer powder iyipolymer ephezulu ye-molecular kunye namaqela e-polar. Xa i-RDP ixutywe kunye neengqungquthela ze-EPS, inxalenye ye-non-polar kwi-chain chain ye-polymer powder iya kudsorb ngokomzimba kunye ne-non-polar surface ye-EPS. Amaqela e-polar kwi-polymer ajoliswe ngaphandle kwi-particle ye-EPS, okwenza iinqununu ze-EPS zitshintshe ukusuka kwi-hydrophobic ukuya kwi-hydrophilic. Ngenxa yokuguqulwa kwendawo yeengqungquthela ze-EPS ngepolymer powder, ingxaki yokuba iinqununu ze-EPS zilula ukuhlangabezana namanzi zixazululwa. Ukudada, iingxaki ezinkulu zodaka lwe-delamination. Ngeli xesha, xa ukongeza i-samente kunye nokuvuselela, amaqela e-polar adsorbed phezu kwendawo yeengqungquthela ze-EPS zidibanisa kunye neengqungquthela ze-samente kwaye zidibanise ngokusondeleyo, eziphucula kakhulu ukusebenza kwe-EPS insulation mortar. Oku kubonakala kwinto yokuba iinqununu ze-EPS zimanziswa ngokulula nge-samente slurry, kwaye amandla okudibanisa phakathi kwezi zibini aphuculwe kakhulu.
Emva kokuba i-emulsion kunye ne-latex powder eyenziwe ngokutsha yenziwe ifilimu, inokwenza amandla aphezulu kunye namandla okubopha kwizinto ezahlukeneyo. Zisetyenziswa njengesibophelelo sesibini kudaka ukudibanisa nesamente ye-inorganic binder, isamente kunye nepolymer ngokulandelelanayo. Dlala amandla ahambelanayo kwaye uphucule ukusebenza kodaka. Ngokuqwalasela i-microstructure ye-polymer-cement composite material, kucatshangelwa ukuba ukongezwa kwe-latex powder edibeneyo kunokwenza ukuba ifilimu ye-polymer ibe yinxalenye yodonga lomngxuma, kwaye yenza i-mortar ibe yinto yonke ngokusebenzisa amandla angaphakathi, okuphucula amandla angaphakathi omdaka. Amandla epolymer, ngaloo ndlela enyusa ukusilela koxinzelelo lodaka kunye nokwandisa uxinzelelo lokugqibela. Ukufunda ukusebenza kwexesha elide lomgubo we-latex owenziwe ngokutsha kwi-mortar, ebonwa ngokuskena i-electron microscope, emva kweminyaka eyi-10, i-microstructure ye-polymer kumdaka ayikatshintshi, ukugcina ukudibanisa okuzinzileyo, amandla okuguquguquka kunye namandla oxinzelelo kunye ne-Hydrophobic enhle. Ukuthatha i-latex powder edispersible njengento yophando, indlela yokwakheka kwamandla okudibanisa i-tile yafundwa, kwaye kwafunyaniswa ukuba emva kokuba i-polymer yomiswe kwifilimu, ifilimu ye-polymer yenza uxhulumaniso oluguquguqukayo phakathi kodaka kunye nethayile kwelinye icala, kwaye kwelinye icala, iipolymers eludongeni zonyusa umxholo womoya wodaka, ezichaphazela ukuthambeka kunye nokubeka umphezulu wepolymer ngokucokisekileyo, kunye nenkqubo yokubeka umhlaba. isiphumo esilungileyo kwinkqubo ye-hydration kunye ne-shrinkage ye-cement. I-Adhesives, zonke ezi zinceda ukunyusa amandla ebhondi.
Ukongeza umgubo we-latex owenziwe ngokutsha kwi-mortar kunokuphucula kakhulu amandla okudibanisa kunye nezinye izinto, kuba isigaba se-liquid se-hydrophilic polymer powder kunye ne-cement suspension singena kwi-pores kunye ne-capillaries ye-matrix, ngelixa i-latex powder ingena kwi-pores nakwi-capillary. Ifilimu yangaphakathi yenziwe kwaye igxininiswe ngokuqinileyo kumphezulu we-substrate, ngaloo ndlela iqinisekisa amandla okubambisana okuhle phakathi kwe-gelled material kunye ne-substrate.
Ixesha lokuposa: Jun-16-2023