Foda mai amfani da bango na ciki da waje, manne na tayal, wakilin nuna tayal, wakilin haɗin foda na busasshe, turmi mai hana zafi na waje don bangon waje, turmi mai daidaita kansa, turmi mai gyarawa, turmi mai ado, turmi mai hana ruwa turmi mai hana zafi na waje turmi mai gauraye busasshe.
A cikin turmi, ana yin hakan ne don inganta karyewar turmi, babban ƙarfin roba da sauran raunin turmi na siminti na gargajiya, da kuma ba turmi na siminti ƙarin sassauci da ƙarfin ɗaurewa, don tsayayya da jinkirta samar da fasa turmi na siminti. Tunda polymer da turmi suna samar da tsarin hanyar sadarwa mai shiga tsakani, ana samar da fim ɗin polymer mai ci gaba a cikin ramuka, wanda ke ƙarfafa haɗin tsakanin tarawa kuma yana toshe wasu ramuka a cikin turmi, don haka turmi da aka gyara bayan taurare ya fi turmi na siminti. Akwai babban ci gaba.
Matsayin foda mai narkewa a cikin putty galibi yana cikin waɗannan fannoni:
1. Inganta mannewa da halayen injina na putty. Foda mai latex mai sake bushewa wani manne ne na foda da aka yi daga wani sinadari na musamman (mai yawan polymer na kwayoyin halitta) bayan an fesa feshi. Wannan foda zai iya sake wargajewa cikin sauri zuwa sinadari bayan ya taɓa ruwa, kuma yana da halaye iri ɗaya da sinadari na farko, wato, yana iya samar da fim bayan ruwa ya ƙafe. Wannan fim ɗin yana da sassauci mai yawa, juriya ga yanayi mai yawa da juriya ga nau'ikan mannewa masu yawa ga substrates. Bugu da ƙari, foda mai hydrophobic na iya sa turmi ya zama mai hana ruwa shiga.
2. Inganta haɗin gwiwar putty, juriya mai kyau, juriyar alkali, juriyar lalacewa, da kuma ƙara ƙarfin lanƙwasa.
3. Inganta hana ruwa shiga da kuma yadda putty ke iya shiga.
4. Inganta riƙe ruwa na putty, ƙara lokacin buɗewa, da kuma inganta iya aiki.
5. Inganta juriyar tasirin putty da kuma ƙara juriyar putty.
2. Matsayin foda mai narkewa a cikin manne na tayal ya ta'allaka ne akan waɗannan fannoni:
1. Yayin da adadin siminti ke ƙaruwa, ƙarfin asalin mannewar tayal yana ƙaruwa. A lokaci guda, ƙarfin mannewa bayan nutsewa cikin ruwa da ƙarfin mannewa bayan tsufar zafi suma suna ƙaruwa. Yawan simintin ya kamata ya wuce kashi 35%.
2. Tare da ƙaruwar adadin foda mai narkewar latex, ƙarfin haɗin gwiwa bayan jiƙa a cikin ruwa da ƙarfin haɗin gwiwa bayan tsufar zafi na manne tayal ɗin yana ƙaruwa daidai gwargwado, amma ƙarfin haɗin gwiwa bayan tsufar zafi yana ƙaruwa a bayyane.
3. Da ƙaruwar adadin cellulose ether, ƙarfin manne mai ƙarfi na manne tayal bayan tsufar zafi yana ƙaruwa, kuma ƙarfin manne mai ƙarfi bayan jiƙa a cikin ruwa da farko yana ƙaruwa sannan ya ragu. Tasirin ya fi kyau idan adadin cellulose ether ya kai kusan kashi 0.3%.
Lokacin amfani da foda mai latex mai sake narkewa, ya kamata mu kula da yawan amfaninsa, don ya iya taka rawar da ya taka.
Lokacin Saƙo: Yuni-05-2023