Ufa wa Guluu wa Urea Formaldehyde, Wokonzeka Kutumizidwa ~

Mafotokozedwe Akatundu
Urea-formaldehyde resin (UF), yomwe imadziwikanso kuti urea-formaldehyde resin, ndi polycondensation ya urea ndi formaldehyde pansi pa ntchito ya catalyst (alkaline kapena acidic catalyst) kuti ipange urea-formaldehyde resin yoyamba, kenako imapanga gawo lomaliza losasungunuka komanso losasungunuka pansi pa ntchito ya wothandizira wochiritsa kapena chowonjezera. Urea wokhazikika. Urea-formaldehyde resin wokonzedwa bwino ndi wopepuka kuposa phenolic resin, wowala, wosagwirizana ndi ma acid ofooka komanso alkali wofooka, uli ndi mphamvu zabwino zotetezera kutentha, wokana kuvala bwino, ndipo ndi wotsika mtengo. Ndi mtundu womwe umagwiritsidwa ntchito kwambiri pakati pa zomatira, makamaka mu Kupanga matabwa osiyanasiyana opanga mumakampani opangira matabwa, urea-formaldehyde resin ndi zinthu zake zosinthidwa zimakhala pafupifupi 90% ya ntchito yonse ya zomatira. Komabe, urea-formaldehyde resin ndi yosavuta kuwola ikakumana ndi ma acid amphamvu ndi alkali. Ili ndi kukana koipa kwa nyengo, kukhuthala koyipa koyambirira, kuchepa kwakukulu, kufooka, kukana madzi, komanso kukalamba mosavuta. Mabolodi opanga opangidwa ndi urea-formaldehyde resin amatulutsa formaldehyde panthawi yopanga ndi kugwiritsa ntchito. Vutoli liyenera kusinthidwa.

Kugwiritsa ntchito
Itha kugwiritsidwa ntchito pazinthu zomwe sizifuna mphamvu zambiri zotsutsana ndi madzi komanso zamagetsi, monga zida zamagetsi, maswichi, zogwirira zamakina, zophimba zida, zogwirira, zofunikira za tsiku ndi tsiku, zokongoletsa, matailosi a mahjong, zivindikiro za chimbudzi, komanso ingagwiritsidwe ntchito popanga mbale zina.

Urea-formaldehyde resin ndiye mtundu wa guluu womwe umagwiritsidwa ntchito kwambiri. Makamaka popanga matabwa osiyanasiyana opangira zinthu m'makampani opanga matabwa, urea-formaldehyde resin ndi zinthu zake zosinthidwa zimakhala pafupifupi 90% ya guluu wonse womwe umagwiritsidwa ntchito.