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 (za zamchere kapena acidic catalyst) kuti apange urea-formaldehyde utomoni woyambirira, kenako amapanga chosasungunuka komanso chosasungunuka. infusible gawo lomaliza pansi pa zochita za wochiritsa kapena chowonjezera. 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, kotero liyenera kusinthidwa.

Kugwiritsa ntchito
Itha kugwiritsidwa ntchito pazinthu zomwe sizifunikira kukana kwamadzi komanso ma dielectric, monga mizere yamagetsi, masiwichi, zogwirira ntchito zamakina, zotengera zida, mikwingwirima, zofunikira zatsiku ndi tsiku, zokongoletsera, matailosi a Mahjong, zotchingira zachimbudzi, komanso zitha kugwiritsidwa ntchito kupanga zina za tableware.

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.