Urea Formaldehyde Glue Powder, Wokonzeka Kutumiza ~

Mafotokozedwe Akatundu
Urea-formaldehyde resin (UF), yomwe imadziwikanso kuti urea-formaldehyde resin, ndi polycondensation ya urea ndi formaldehyde pansi pa chothandizira (zamchere kapena acidic catalyst) kuti apange urea-formaldehyde utomoni woyambirira, kenako ndikupanga gawo losasungunuka komanso losasunthika la gawo lomaliza lowonjezera. Thermosetting utomoni. Urea-formaldehyde resin wochiritsidwa ndi wopepuka mu mtundu kuposa phenolic resin, translucent, kugonjetsedwa ndi asidi ofooka ndi alkali ofooka, ali ndi katundu wabwino wotchinjiriza, kukana kuvala bwino, ndipo ndi wotchipa. Ndiwo mitundu yomwe imagwiritsidwa ntchito kwambiri pakati pa zomatira, makamaka popanga matabwa osiyanasiyana opangira matabwa, urea-formaldehyde resin ndi zinthu zake zosinthidwa zimakhala pafupifupi 90% ya zomatira zonse. Komabe, urea-formaldehyde utomoni ndi wosavuta kuwola ukakhala ndi asidi amphamvu ndi alkalis. Imakhala ndi vuto lolimbana ndi nyengo, kusawoneka bwino koyambirira, kuchepa kwakukulu, brittleness, kukana madzi, komanso kukalamba mosavuta. Ma board opangira opangidwa ndi urea-formaldehyde resin amatulutsa formaldehyde panthawi yopanga ndikugwiritsa ntchito. vuto, choncho liyenera kusinthidwa.

Kugwiritsa ntchito
Itha kugwiritsidwa ntchito pazinthu zomwe sizifuna kukana kwamadzi kwambiri komanso zida za dielectric, monga mizere yamagetsi, masiwichi, zogwirira ntchito zamakina, zotengera zida, ziboda, zofunikira zatsiku ndi tsiku, zokongoletsa, matailosi a Mahjong, lids zachimbudzi, komanso zitha kugwiritsidwa ntchito popanga zida zina za tebulo.

Urea-formaldehyde utomoni ndi mtundu wogwiritsidwa ntchito kwambiri wa zomatira. Makamaka popanga matabwa osiyanasiyana opangira matabwa, urea-formaldehyde utomoni ndi zinthu zake zosinthidwa zimakhala pafupifupi 90% ya zomatira zonse zomwe zimagwiritsidwa ntchito.