Putty wani abu ne mai tushe da aka yi amfani da shi sosai a cikin ayyukan gine-ginen kayan ado, kuma ingancinsa kai tsaye yana rinjayar rayuwar sabis da tasirin ado na bangon bango. Ƙarfin haɗin gwiwa da juriya na ruwa sune mahimman alamomi don kimanta aikin putty.Redispersible latex foda, a matsayin kayan gyare-gyare na kwayoyin halitta, yana taka muhimmiyar rawa wajen inganta aikin putty.
1. Tsarin aikin aikin foda na latex mai sakewa
Redispersible latex foda ne foda kafa ta feshi bushewa na polymer emulsion. Yana iya sake yin emulsify don samar da ingantaccen tsarin watsawa na polymer bayan tuntuɓar ruwa, wanda ke taka rawa wajen haɓaka ƙarfin haɗin gwiwa da sassaucin sa. Babban ayyukansa sun haɗa da:
Inganta ƙarfin haɗin gwiwa: Redispersible latex foda yana samar da fim ɗin polymer yayin aikin bushewa na putty, kuma yana daidaitawa tare da kayan gelling na inorganic don haɓaka ƙarfin haɗin kai.
Haɓaka juriya na ruwa: Latex foda yana samar da hanyar sadarwa ta hydrophobic a cikin tsarin putty, rage shigar ruwa da inganta juriya na ruwa.
Haɓaka sassauci: Yana iya rage ɓarnawar putty, haɓaka iyawar nakasa, da rage haɗarin fasa.
2. Nazarin gwaji
Kayan gwaji
Base abu: ciminti na tushen putty foda
Redispersible latex foda: ethylene-vinyl acetate (EVA) copolymer latex foda
Sauran Additives: thickener, ruwa retaining wakili, filler, da dai sauransu.
Hanyar gwaji
An shirya abubuwan sawa tare da nau'ikan foda na latex daban-daban (0%, 2%, 5%, 8%, 10%) bi da bi, kuma an gwada ƙarfin haɗin kansu da juriya na ruwa. An ƙaddara ƙarfin haɗin kai ta hanyar gwajin cirewa, kuma an ƙididdige gwajin juriya na ruwa ta hanyar ƙarfin riƙewa bayan nutsewa cikin ruwa na sa'o'i 24.
3. Sakamako da tattaunawa
Tasirin foda mai iya tarwatsawa akan ƙarfin haɗin gwiwa
Sakamakon gwajin ya nuna cewa tare da karuwar adadin RDP, ƙarfin haɗin gwiwa na putty yana nuna yanayin haɓakawa na farko sannan kuma daidaitawa.
Lokacin da adadin RDP ya karu daga 0% zuwa 5%, ƙarfin haɗin gwiwa na putty yana inganta sosai, saboda fim ɗin polymer wanda RDP ya kafa yana haɓaka ƙarfin haɗin gwiwa tsakanin kayan tushe da putty.
Ci gaba da haɓaka RDP zuwa fiye da 8%, haɓakar ƙarfin haɗin gwiwa ya kasance mai lebur, har ma da raguwa kaɗan a 10%, wanda zai iya zama saboda RDP da yawa zai shafi tsarin m na putty kuma ya rage ƙarfin dubawa.
Tasirin foda mai iya tarwatsawa akan juriyar ruwa
Sakamakon gwajin gwagwarmayar ruwa ya nuna cewa adadin RDP yana da tasiri mai mahimmanci akan juriya na ruwa na putty.
Ƙarfin haɗin gwiwa na putty ba tare da RDP ba ya ragu sosai bayan jiƙa a cikin ruwa, yana nuna rashin ƙarfi na ruwa.
Ƙarin adadin da ya dace na RDP (5% -8%) yana sa putty ya zama wani tsari mai mahimmanci na kwayoyin halitta-inorganic, yana inganta juriya na ruwa, kuma yana inganta ƙarfin riƙewa bayan 24 hours na nutsewa.
Duk da haka, lokacin da abun ciki na RDP ya wuce 8%, haɓaka juriya na ruwa yana raguwa, wanda zai iya zama saboda yawancin kayan aikin kwayoyin suna rage ikon anti-hydrolysis na putty.
Za a iya cimma matsaya masu zuwa daga binciken gwaji:
Adadin da ya dace naredispersible latex foda(5% -8%) na iya inganta haɓaka ƙarfin haɗin gwiwa da juriya na ruwa na putty.
Yin amfani da RDP mai yawa (> 8%) na iya rinjayar tsarin tsayayyen tsari na putty, yana haifar da raguwa ko ma raguwa a cikin haɓaka ƙarfin haɗin gwiwa da juriya na ruwa.
Dole ne a inganta mafi kyawun sashi bisa ga takamaiman yanayin aikace-aikacen putty don cimma daidaito mafi kyau tsakanin aiki da farashi.
Lokacin aikawa: Maris 26-2025