Redispersible latex foda tare da sauran inorganic binders (kamar sumunti, slaked lemun tsami, gypsum, da dai sauransu) da kuma daban-daban aggregates, fillers da sauran Additives (kamar methyl hydroxypropyl cellulose ether, sitaci ether, lignocellulose, hydrophobic wakili, da dai sauransu) domin jiki hadawa don yin bushe-mixed mortar. Lokacin da aka ƙara busassun turmi a cikin ruwa kuma a motsa, za a watsar da barbashin latex foda a cikin ruwa a ƙarƙashin aikin colloid na kariya na hydrophilic da injin injin. Lokacin da ake buƙata don tarwatsa foda na latex na yau da kullun gajere ne, kuma wannan fihirisar lokacin sake watsawa shima muhimmin ma'auni ne don bincika ingancinsa. A farkon matakin haɗuwa, foda na latex ya riga ya fara rinjayar rheology da aiki na turmi.
Saboda halaye daban-daban da gyare-gyare na kowane nau'i na latex foda, wannan tasirin kuma ya bambanta, wasu suna da tasiri mai tasiri, wasu kuma suna da tasirin thixotropy. Tsarin tasirinsa ya fito ne daga bangarori da yawa, ciki har da tasirin latex foda akan kusancin ruwa yayin watsawa, tasirin danko daban-daban na latex foda bayan watsawa, tasirin colloid mai kariya, da tasirin siminti da belin ruwa. Tasirin ya haɗa da haɓakar abubuwan da ke cikin iska a cikin turmi da kuma rarraba kumfa na iska, da kuma tasirin abubuwan da ke tattare da shi da kuma hulɗar da sauran abubuwan da suka dace. Sabili da haka, zaɓi na musamman da rarrabuwa na redispersible latex foda wata hanya ce mai mahimmanci don rinjayar ingancin samfur. Mafi na kowa ra'ayi shi ne cewa redispersible latex foda yawanci ƙara da abun ciki na iska na turmi, game da shi lubricating gina turmi, da dangantaka da danko na latex foda, musamman ma colloid m, zuwa ruwa a lokacin da aka tarwatsa Ƙara na maida hankali taimaka wajen inganta cohesion na ginin turmi, game da shi inganta mortarability. Daga baya, jika turmi dauke da latex foda watsawa da ake amfani a kan aikin surface. Tare da raguwar ruwa a kan matakan uku - shayar da tushe na tushe, da amfani da simintin hydration dauki, da kuma canza yanayin ruwa zuwa iska, ƙwayoyin guduro a hankali suna gabatowa , musaya a hankali suna haɗuwa da juna, kuma a ƙarshe ya zama fim din polymer mai ci gaba. Wannan tsari ya fi faruwa a cikin ramukan turmi da kuma saman daskararrun.
Ya kamata a jaddada cewa don yin wannan tsari ba zai iya jurewa ba, wato, lokacin da fim din polymer ya sake cin karo da ruwa, ba za a sake tarwatsa shi ba, kuma dole ne a rabu da colloid mai kariya na redispersible latex foda daga tsarin fim din polymer. Wannan ba matsala ba ne a tsarin turmi na simintin alkaline, saboda za a saponified da alkali da aka samar ta hanyar siminti hydration, kuma a lokaci guda, adsorption na ma'adini-kamar kayan za su rabu da shi a hankali daga tsarin, ba tare da kariya daga hydrophilicity Colloid ba, wanda ba a iya narkewa a cikin ruwa kuma ya kafa ta hanyar watsawa na lokaci daya na redisper ruwa, amma ba zai iya aiki ba kawai a karkashin yanayin bushewa. yanayin nutsewa. A cikin tsarin da ba na alkaline ba, irin su tsarin gypsum ko tsarin tare da masu cikawa kawai, saboda wasu dalilai har yanzu colloid mai kariya yana wanzu a cikin fim ɗin polymer na ƙarshe, wanda ke shafar juriya na ruwa na fim, amma saboda waɗannan tsarin ba a amfani da su ba a cikin yanayin nutsewa na dogon lokaci a cikin ruwa, kuma polymer har yanzu yana da kayan aikin injiniya na musamman, ba zai shafi aikace-aikacen tsarin latex foda ba.
Tare da samuwar fim ɗin polymer na ƙarshe, an kafa tsarin tsarin da ya ƙunshi inorganic and Organic binders a cikin turmi da aka warke, wato, kayan aikin hydraulic yana samar da tsarin gaggautsa da ƙarfi, kuma foda mai ɗorewa na latex foda yana samar da fim tsakanin rata da ƙasa mai ƙarfi. Haɗi mai sassauƙa. Irin wannan haɗin za a iya tunanin kamar an haɗa shi da kwarangwal ta ƙananan maɓuɓɓugan ruwa da yawa. Tun da ƙarfin juzu'i na fim ɗin resin polymer da aka kafa ta hanyar latex foda yawanci tsari ne mai girma fiye da na kayan aikin hydraulic, ƙarfin turmi da kansa zai iya inganta, wato, haɗin kai zai inganta. Tun da sassaucin ra'ayi da nakasar polymer sun fi girma fiye da na tsayayyen tsari irin su siminti, an inganta nakasar turmi, kuma tasirin tarwatsa damuwa yana inganta sosai, don haka inganta juriya na turmi.
Lokacin aikawa: Maris-07-2023