Foda Manne na Urea Formaldehyde, A Shirye Don Jigilar Kaya ~

Bayanin Samfurin
Resin Urea-formaldehyde (UF), wanda aka fi sani da resin urea-formaldehyde, shine polycondensation na urea da formaldehyde a ƙarƙashin aikin mai kara kuzari (alkaline ko acidic catalyst) don samar da resin urea-formaldehyde na farko, sannan ya samar da matakin ƙarshe wanda ba ya narkewa kuma ba zai iya narkewa ba a ƙarƙashin aikin wakili mai warkarwa ko ƙari. Resin thermosetting. Resin urea-formaldehyde da aka goge ya fi launin phenolic resin sauƙi, mai haske, mai juriya ga acid mai rauni da alkali mai rauni, yana da kyawawan kaddarorin kariya, kyakkyawan juriya ga lalacewa, kuma yana da arha. Ita ce nau'in da aka fi amfani da shi tsakanin manne, musamman a cikin kera allunan wucin gadi daban-daban a masana'antar sarrafa itace, resin urea-formaldehyde da samfuran da aka gyara suna wakiltar kusan kashi 90% na jimlar amfani da manne. Duk da haka, resin urea-formaldehyde yana da sauƙin ruɓewa lokacin da aka fallasa shi ga acid mai ƙarfi da alkalis. Yana da mummunan juriya ga yanayi, mummunan ɗanko na farko, babban raguwa, karyewa, juriya ga ruwa, da sauƙin tsufa. Allunan wucin gadi da aka samar da resin urea-formaldehyde suna fitar da formaldehyde yayin ƙera da amfani. matsala, don haka dole ne a gyara shi.

Aikace-aikace
Ana iya amfani da shi a cikin samfuran da ba sa buƙatar juriyar ruwa mai yawa da halayen dielectric, kamar su sandunan wutar lantarki, maɓallan wuta, maƙullan injina, maƙullan kayan aiki, maɓallan, abubuwan da ake buƙata na yau da kullun, kayan ado, tayal na mahjong, murfi na bayan gida, kuma ana iya amfani da shi wajen ƙera wasu kayan teburi.

Resin Urea-formaldehyde shine nau'in manne da aka fi amfani da shi. Musamman a cikin kera allunan wucin gadi daban-daban a masana'antar sarrafa itace, resin urea-formaldehyde da samfuran da aka gyara sun kai kusan kashi 90% na jimlar amfani da manne.