Mchere woteteza kutentha wa EPS ndi chinthu chopepuka choteteza kutentha chomwe chimasakanizidwa ndi chosungira chosapangidwa ndi zinthu zachilengedwe, chosungira zachilengedwe, chosakanizira, chosakanizira ndi chophatikiza chopepuka mu gawo linalake. Mu kafukufuku waposachedwa komanso kugwiritsa ntchito chitsulo choteteza tinthu ta EPS, ufa wa latex wobwezeretsedwanso umakhudza kwambiri magwiridwe antchito a chitsulocho ndipo umakhala ndi mtengo wokwera, kotero nthawi zonse wakhala chinthu chofunikira kwambiri. Kugwira ntchito kwa chitsulo choteteza kutentha cha EPS particles external wall thermal insulation system makamaka kumachokera ku chosungira cha polymer, ndipo gawo lake makamaka ndi vinyl acetate/ethylene copolymer. Mtundu uwu wa polymer emulsion ukhoza kuumitsidwa ndi spray kuti upeze ufa wa latex wobwezeretsedwanso. Chifukwa cha kukonzekera bwino kwa ufa wa latex wobwezeretsedwanso pomanga, kunyamula mosavuta komanso kusungira bwino, ufa womasuka wa ma polima wakhala njira yopitira patsogolo chifukwa cha kukonzekera kwake molondola, kunyamula mosavuta komanso kusungira bwino. Kugwira ntchito kwa chitsulo choteteza tinthu ta EPS kumadalira kwambiri mtundu ndi kuchuluka kwa polima yomwe imagwiritsidwa ntchito. Ufa wa latex wa Ethylene-vinyl acetate (EVA) wokhala ndi ethylene yambiri komanso Tg yochepa (kutentha kwagalasi) uli ndi mphamvu zabwino pankhani ya mphamvu ya impact, mphamvu ya bond komanso kukana madzi.
Kukonza bwino magwiridwe antchito a ufa wa latex wosungunukanso pa matope kumachitika chifukwa chakuti ufa wa polymer ndi polima wokhala ndi mamolekyu ambiri okhala ndi magulu a polar. Pamene RDP ikasakanizidwa ndi tinthu ta EPS, gawo losakhala polar mu unyolo waukulu wa ufa wa polymer lidzasungunuka ndi pamwamba pa EPS losakhala polar. Magulu a polar mu polima amalunjika kunja pamwamba pa tinthu ta EPS, zomwe zimapangitsa kuti tinthu ta EPS tisinthe kuchoka pa hydrophobic kupita ku hydrophilic. Chifukwa cha kusintha kwa pamwamba pa tinthu ta EPS ndi ufa wa polymer, vuto lakuti tinthu ta EPS ndi losavuta kukumana ndi madzi limathetsedwa. Mavuto akuluakulu oyandama, ochotsa matope. Pakadali pano, powonjezera simenti ndikusakaniza, magulu a polar omwe amasungunuka pamwamba pa tinthu ta EPS amalumikizana ndi tinthu ta simenti ndikugwirizana bwino, zomwe zimapangitsa kuti matope a EPS azigwira ntchito bwino. Izi zikuwonekera chifukwa chakuti tinthu ta EPS timanyowa mosavuta ndi simenti, ndipo mphamvu yolumikizana pakati pa awiriwa imakula kwambiri.
Pambuyo poti ufa wa emulsion ndi latex wothiranso madzi apangidwe kukhala filimu, amatha kupanga mphamvu yolimba komanso mphamvu yolumikizirana pazipangizo zosiyanasiyana. Amagwiritsidwa ntchito ngati chomangira chachiwiri mu matope kuti aphatikize ndi simenti yothiranso madzi, simenti ndi polima motsatana. Sewerani mphamvu yofanana ndikuwongolera magwiridwe antchito a matope. Poona kapangidwe kake ka zinthu zopangidwa ndi polymer-simenti, zimaganiziridwa kuti kuwonjezera ufa wa latex wothiranso madzi kungapangitse filimu ya polymer kukhala gawo la khoma la dzenje, ndikupanga matope kukhala onse kudzera mu mphamvu yamkati, zomwe zimapangitsa mphamvu yamkati ya matope kukhala yabwino. Mphamvu ya polymer, motero imawonjezera kupsinjika kwa matope ndikuwonjezera mphamvu yomaliza. Kuti aphunzire momwe ufa wa latex wothiranso madzi umagwirira ntchito kwa nthawi yayitali mu matope, zomwe zimawonedwa ndi scanning electron microscope, patatha zaka 10, kapangidwe ka polymer mu matope sikunasinthe, kusunga mgwirizano wokhazikika, mphamvu yosinthasintha komanso mphamvu yokakamiza komanso Hydrophobic yabwino. Pogwiritsa ntchito ufa wa latex wosungunukanso ngati chinthu chofufuzira, njira yopangira mphamvu yolumikizira matailosi inaphunziridwa, ndipo zinapezeka kuti polima atauma kukhala filimu, filimu ya polima inapanga kulumikizana kosinthasintha pakati pa matope ndi matailosi mbali imodzi, ndipo mbali inayo, Ma polima omwe ali mu matope amawonjezera mpweya wa matope, zomwe zimakhudza kusalala ndi kunyowa kwa pamwamba, ndipo pambuyo pake panthawi yokhazikitsa, ma polima nawonso ali ndi zotsatira zabwino pa njira yothira madzi ndi kuchepa kwa simenti. Zomatira, zonsezi zimathandiza kuwonjezera mphamvu yolumikizira.
Kuonjezera ufa wa latex wosungunukanso ku matope kungathandize kwambiri kulimbitsa mphamvu yolumikizana ndi zinthu zina, chifukwa gawo lamadzimadzi la ufa wa polymer wa hydrophilic ndi simenti yoyimitsidwa limalowa m'mabowo ndi m'mitsempha yamagazi, pomwe ufa wa latex umalowa m'mabowo ndi m'mitsempha yamagazi. Filimu yamkati imapangidwa ndikumatiridwa mwamphamvu pamwamba pa substrate, motero kuonetsetsa kuti mphamvu yolumikizana pakati pa zinthu zojambulidwa ndi substrate ndi yolimba.
Nthawi yotumizira: Juni-16-2023