EPS granular thermal insulation turmi abu ne mai nauyi mai nauyi wanda aka haɗe shi da mahaɗar inorganic, masu ɗaure kwayoyin halitta, abubuwan ƙarawa, ƙari da tara haske a cikin wani ƙayyadadden rabo. Daga cikin EPS granular thermal insulation turmi a halin yanzu ana bincike kuma ana amfani da shi, ana iya sake yin fa'ida Fassarar latex foda yana da babban tasiri akan aikin turmi kuma yana da babban rabo a cikin farashi, don haka ya kasance mai da hankali ga mutane. Ayyukan haɗin gwiwa na EPS barbashi rufi turmi na waje rufi tsarin yafi fito daga polymer m, kuma abun da ke ciki shi ne mafi yawa vinyl acetate/ethylene copolymer. Redispersible latex foda za a iya samu ta feshi bushewa irin wannan polymer emulsion. Saboda daidaitattun shirye-shiryen, sufuri mai dacewa da sauƙin ajiya na redispersible latex foda a cikin gini, musamman sako-sako da latex foda ya zama yanayin ci gaba saboda ainihin shirye-shiryensa, sufuri mai dacewa da sauƙin ajiya. Ayyukan EPS turmi insulation sun dogara da yawa akan nau'in da adadin polymer da aka yi amfani da su. Ethylene-vinyl acetate latex foda (EVA) tare da babban abun ciki na ethylene da ƙananan Tg (gilashin zafin jiki) yana da mafi kyawun aiki dangane da ƙarfin tasiri, ƙarfin haɗin gwiwa da juriya na ruwa.
Ingantaccen foda na latex a kan aikin turmi shine saboda gaskiyar cewa latex foda shine babban ƙwayar kwayoyin halitta tare da kungiyoyin polar. Lokacin da aka haɗu da foda na latex tare da ƙwayoyin EPS, ɓangaren da ba na iyakacin duniya ba a cikin babban sarkar latex foda polymer zai zama tallan jiki 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 hulɗa tare da barbashi na siminti kuma suna haɗuwa a hankali, ta yadda za a iya inganta aikin turmi na EPS. 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.
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 ƙarfin ƙarshe. Don nazarin aikin dogon lokaci na redispersible latex foda a cikin turmi, an lura da SEM cewa bayan shekaru 10, microstructure na polymer a cikin turmi bai canza ba, yana riƙe da kwanciyar hankali, ƙarfin sassauci da matsawa da kuma mai kyau ruwa. An yi nazarin tsarin samar da ƙarfin mannen tayal akan foda mai iya tarwatsawa, kuma an gano cewa bayan da aka bushe polymer ɗin a cikin fim, fim ɗin polymer ya samar da alaƙa mai sassauƙa tsakanin turmi da tayal a gefe guda, kuma akan. A daya hannun, The polymer a cikin turmi ƙara da iska abun ciki na turmi da kuma rinjayar samuwar da wettability na surface, sa'an nan a lokacin da saitin tsari da polymer ma yana da m tasiri a kan hydration tsari da shrinkage na siminti a cikin. mai ɗaure, Duk waɗannan zasu taimaka don haɓaka ƙarfin haɗin gwiwa.
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 daɗaɗɗa a kan farfajiyar ƙasa, don haka tabbatar da kyakkyawar haɗin gwiwa tsakanin siminti da kayan aiki.
Lokacin aikawa: Fabrairu-17-2023