Dispersible polymer foda 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 Agents, da dai sauransu) suna jiki gauraye don yin bushe-mixed mortar. Lokacin da aka gauraya turmi mai busassun da ruwa, a ƙarƙashin aikin colloid mai kariya na hydrophilic da shearing inji, ƙwayoyin latex foda za su watse cikin ruwa.
Saboda halaye daban-daban da gyare-gyare na kowane nau'i na latex foda, wannan tasirin kuma ya bambanta, wasu suna da tasirin inganta kwararar ruwa, yayin da wasu suna da tasiri na haɓaka thixotropy. Tsarin tasirinsa ya fito ne daga bangarori da yawa, ciki har da tasirin foda na latex akan kusancin ruwa a lokacin watsawa, tasirin bambancin danko na latex foda bayan watsawa, tasirin colloid mai kariya, da tasirin siminti da bel na ruwa. Tasirin abubuwan da ke biyo baya sun haɗa da tasirin haɓakar iska na turmi da rarraba kumfa na iska, da kuma tasirin abubuwan da ke tattare da shi da kuma hulɗar da sauran abubuwan da ke tattare da su. Sabili da haka, zaɓi na musamman da rarrabuwa na foda polymer foda mai mahimmanci shine hanya mai mahimmanci don shafar ingancin samfur. Daga cikin su, mafi yawan mahangar ra'ayi shine cewa foda na polymer wanda za'a iya rarrabawa yawanci yana ƙara yawan iskar turmi, ta haka ne yake sa aikin ginin turmi, da dangantaka da danko na polymer foda, musamman lokacin da colloid mai kariya ya tarwatsa, ya sha ruwa. Ƙarfafawar α yana taimakawa wajen inganta haɗin gwiwar ginin ginin, don haka inganta aikin turmi. Daga baya, rigar turmi mai ɗauke da tarwatsa foda na latex ana amfani da shi a saman aikin. Tare da raguwar danshi a kan matakan uku - shayar da tushe na tushe, cin abinci na siminti hydration dauki, da kuma rashin daidaituwa na danshi a cikin iska, ƙwayoyin resin a hankali suna kusantar da , haɗin gwiwar a hankali yana 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 ba a sake tarwatse ba lokacin da ya sake saduwa da ruwa, dole ne a raba colloid mai kariya na foda na polymer foda daga tsarin fim din polymer. Wannan ba matsala ba ne a tsarin turmi na siminti na alkaline, domin za a sanya shi da sinadarin alkali da ruwan siminti ya samar, kuma a lokaci guda, adsorption na kayan quartz zai rabu da shi a hankali daga tsarin ba tare da kariya ta hydrophilic ba. Colloid, fim din da ba shi da narkewa a cikin ruwa kuma an kafa shi ta hanyar watsawa na lokaci daya na redispersible latex foda, zai iya aiki ba kawai a karkashin yanayin bushe ba, amma har ma a karkashin yanayi na dogon lokaci nutsewa cikin ruwa. A cikin tsarin da ba na alkaline ba, irin su tsarin gypsum ko tsarin tare da kawai fillers, m colloid har yanzu partially kasance a cikin karshe polymer film saboda wasu dalilai, rinjayar da ruwa juriya na fim, amma tun da wadannan tsarin ba a yi amfani da A cikin hali na dogon lokacin da nutsewa a cikin ruwa, da kuma polymer har yanzu yana da musamman inji Properties, shi ba ya shafar aikace-aikace na dispersible polymer foda a cikin wadannan tsarin.
Lokacin aikawa: Afrilu-25-2024