Gabatarwa zuwa RDP-Redispersible Polymer Powder

Redispersible polymer foda (RDP) foda ne mai tushen polymer wanda aka yi amfani da shi a aikace-aikace daban-daban a cikin masana'antar gini. An samo RDP ta hanyar bushewar emulsion na polymer. Ana amfani da shi sosai a cikin tsarin siminti don inganta kaddarorin turmi kamar mannewa, juriya na ruwa da ƙarfin sassauƙa.

RDP ya ƙunshi nau'ikan polymers, ciki har da vinyl acetate-ethylene (VAE), styrene-butadiene (SB), ethylene-vinyl chloride (EVC), da polyvinyl barasa (PVA). Wadannan polymers an tsara su ne don dacewa da nau'ikan nau'ikan da ke tattare da cinders kamar ciminti, lemun tsami da gypsum. Ana amfani da su a cikin nau'o'in aikace-aikace daban-daban ciki har da tile adhesives, mahadi masu daidaita kai, ruwa mai hana ruwa da kuma rufin waje da tsarin ƙare (EIFS).

Tsarin masana'antu na RDP ya ƙunshi manyan matakai guda uku: polymerization, emulsification da bushewar feshi. A cikin matakin polymerization, monomers ana yin su ne a ƙarƙashin takamaiman yanayi, kamar zazzabi, matsa lamba da lokacin amsawa. A sakamakon polymer watsawa ne stabilized tare da surfactants su hana barbashi agglomeration. A cikin emulsification mataki, da polymer watsawa da aka kara sarrafa su samar da wani emulsion, wanda aka fesa bushe bushe don samun RDP. A lokacin bushewar feshi, ruwa yana ƙafewa daga ɗigon emulsion, yana samar da ƙwayoyin polymer. Ana tattara foda da aka samu sannan a tattara su don jigilar kaya.

Kaddarorin RDP sun dogara ne akan abubuwa da yawa kamar nau'in polymer, girman barbashi da haɗin sinadarai. Mafi yawan amfani da polymer don RDP shine VAE, wanda ke da kyakkyawan mannewa da juriya na ruwa. Girman barbashi na RDP zai iya bambanta daga ƴan microns zuwa ƴan millimeters, ya danganta da aikace-aikacen. Abubuwan sinadaran RDP kuma na iya bambanta dangane da abubuwan da ake so. Misali, RDPs na iya ƙunsar ƙarin abubuwan ƙari kamar su robobi, tarwatsawa da masu kauri don haɓaka kaddarorin su.

RDP yana da fa'idodi da yawa akan sauran nau'ikan polymers da ake amfani da su wajen gini. Ɗaya daga cikin manyan fa'idodin shine ikonsa na sake tarwatsawa cikin ruwa. Wannan yana nufin cewa RDP za a iya gauraye da ruwa don samar da wani barga emulsion, wanda za a iya amfani da daban-daban aikace-aikace. Redispersibility na RDP ya dogara da sinadaran sinadaran da girman barbashi. An tsara ɓangarori na RDP don dacewa da ruwa kuma suna watsewa da sauri lokacin da aka haɗe su da ruwa.

Wani fa'ida na RDP shine ikonta na haɓaka aikin tsarin siminti. RDP na iya inganta mannewa tsakanin turmi da substrate, rage raguwa da ƙara ƙarfin turmi. Hakanan yana inganta juriya na ruwa na turmi, yana hana shigar ruwa da rage haɗarin yanayi.