Urea Formaldehyde Glue Foda, Shirye don Kawo ~

Bayanin Samfura

Urea-formaldehyde guduro (UF), wanda kuma aka sani da urea-formaldehyde resin, shine polycondensation na urea da formaldehyde a karkashin aikin mai kara kuzari (alkaline ko acidic mai kara kuzari) don samar da guduro na farko na urea-formaldehyde, sannan kuma ya samar da maras narkewa kuma ɓataccen lokaci na ƙarshe a ƙarƙashin aikin wakili ko ƙari. Gudun thermosetting. Resin urea-formaldehyde da aka warke yana da haske a launi fiye da resin phenolic, translucent, juriya ga raunin acid da raunin alkali, yana da kyawawan kaddarorin rufewa, kyakkyawan juriya, kuma yana da arha. Shi ne nau'in da aka fi amfani da shi a tsakanin mannewa, musamman a cikin kera allunan wucin gadi daban-daban a cikin masana'antar sarrafa itace, resin urea-formaldehyde da samfuran da aka gyara sun kai kusan kashi 90% na yawan amfani da mannewa. Duk da haka, resin urea-formaldehyde yana da sauƙi don rushewa lokacin da aka fallasa shi ga acid mai karfi da alkalis. Yana da ƙarancin juriya na yanayi, rashin ɗankowar farko, babban raguwa, raguwa, juriyar ruwa, da sauƙin tsufa. Allolin wucin gadi da aka samar tare da urea-formaldehyde resin saki formaldehyde yayin sarrafawa da tsarin amfani. matsala, don haka dole ne a gyara shi.

Aikace-aikace

Ana iya amfani da shi a cikin samfuran da ba sa buƙatar babban juriya na ruwa da kaddarorin dielectric, irin su igiyoyin wutar lantarki, masu sauyawa, injin injin, casings na kayan aiki, ƙwanƙwasa, buƙatun yau da kullun, kayan ado, fale-falen mahjong, murfin bayan gida, kuma ana iya amfani dashi a cikin kera wasu kayan abinci.

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