Emulsion da redispersible latex foda na iya samar da high tensile ƙarfi da bonding ƙarfi a kan daban-daban kayan bayan da fim samuwar, ana amfani da su a matsayin na biyu mai ɗaure a turmi don haɗa tare da inorganic daure ciminti, ciminti da polymer bi da bi Ba da cikakken wasa ga daidai ƙarfin don inganta aikin turmi.
Ta hanyar lura da microstructure na polymer-cement composite abu, an yi imani da cewa Bugu da kari na redispersible latex foda zai iya sa polymer samar da wani fim da kuma zama wani ɓangare na ramin bango, da kuma sanya turmi ya zama gaba ɗaya ta hanyar ciki karfi. wanda ke inganta ƙarfin ciki na turmi.Ƙarfin polymer, don haka inganta damuwa na rashin ƙarfi na turmi da kuma ƙara ƙimar ƙarshe.
Tsarin microstructure na polymer a cikin turmi bai canza ba na dogon lokaci, kuma yana kula da haɗin gwiwa mai ƙarfi, flexural da ƙarfin matsawa, da kyakkyawan hydrophobicity.Tsarin tsari na redispersible latex foda akan ƙarfin tayal adhesives ya gano cewa bayan polymer ɗin ya bushe a cikin fim, fim ɗin polymer ya samar da alaƙa mai sassauƙa tsakanin turmi da tayal a gefe guda, kuma a gefe guda, polymer a ciki. sabon turmi Ƙara yawan iska na turmi kuma yana rinjayar samuwar da kuma wettability na farfajiyar, sa'an nan kuma a lokacin tsarin saiti, polymer kuma yana da tasiri mai kyau akan tsarin hydration da shrinkage na ciminti a cikin ɗaure, wanda zai taimaka don haɓaka ƙarfin Bond yana da mafi kyawun taimako.
Ƙara redispersible latex foda zuwa turmi iya muhimmanci inganta bonding ƙarfi da sauran kayan, saboda hydrophilic latex foda da ruwa lokaci na ciminti dakatar shiga cikin pores da capillaries na matrix, da kuma latex foda shiga cikin pores da capillaries. .Fim na ciki an kafa shi kuma yana da tabbaci a kan farfajiyar ƙasa, don haka tabbatar da kyakkyawar haɗin gwiwa tsakanin siminti da kayan aiki.
Ingantaccen foda na latex a kan aikin turmi shine saboda gaskiyar cewa latex foda shine babban polymer kwayoyin halitta tare da kungiyoyin polar.Lokacin da aka haɗe foda na latex tare da ƙwayoyin EPS, ɓangaren da ba na iyakacin duniya ba a cikin babban sarkar na latex foda polymer zai zama adsorption na jiki tare da fuskar EPS maras iyaka.Ƙungiyoyin polar a cikin polymer suna fuskantar waje a saman sassan EPS, don haka ƙwayoyin EPS sun canza daga hydrophobicity zuwa hydrophilicity.Saboda gyaggyarawa na farfajiyar EPS ta hanyar latex foda, yana magance matsalar cewa ƙwayoyin EPS suna cikin sauƙin fallasa ruwa.Mai iyo, matsalar manyan yadudduka na turmi.A wannan lokacin, lokacin da aka ƙara siminti da haɗuwa, ƙungiyoyin polar suna tallatawa a saman sassan EPS suna yin hulɗa tare da barbashi na siminti kuma suna haɗuwa a hankali, ta yadda aikin EPS ya inganta sosai.Wannan yana nunawa a cikin gaskiyar cewa ƙwayoyin EPS suna sauƙin jika ta hanyar manna siminti, kuma ƙarfin haɗin gwiwa tsakanin su biyu yana inganta sosai.
Lokacin aikawa: Maris 18-2023