Urea formaldehyde gundi poda, tayari kwa usafirishaji ~

Maelezo ya bidhaa
Urea-formaldehyde resin (UF), also known as urea-formaldehyde resin, is the polycondensation of urea and formaldehyde under the action of a catalyst (alkaline or acidic catalyst) to form an initial urea-formaldehyde resin, and then forms an insoluble and infusible final phase under the action of a curing agent or additive. Thermosetting resin. Cured urea-formaldehyde resin is lighter in color than phenolic resin, translucent, resistant to weak acids and weak alkali, has good insulation properties, excellent wear resistance, and is cheap. It is the most commonly used variety among adhesives, especially in In the manufacturing of various artificial boards in the wood processing industry, urea-formaldehyde resin and its modified products account for about 90% of the total adhesive usage. Walakini, resin ya urea-formaldehyde ni rahisi kutengana wakati inafunuliwa na asidi kali na alkali. Inayo upinzani mbaya wa hali ya hewa, mnato duni wa awali, shrinkage kubwa, brittleness, upinzani wa maji, na kuzeeka rahisi. Bodi bandia zinazozalishwa na resin ya urea-formaldehyde kutolewa formaldehyde wakati wa mchakato wa utengenezaji na matumizi. shida, kwa hivyo lazima ibadilishwe.

Maombi

Resin ya urea-formaldehyde ndio aina inayotumika sana ya wambiso. Especially in the manufacturing of various artificial boards in the wood processing industry, urea-formaldehyde resin and its modified products account for about 90% of the total adhesive usage.