Urea-formaldehyde resins

- May 17, 2017 -

Urea-formaldehyde resin also known as urea-formaldehyde resin. UF, urea and formaldehyde in the catalyst (alkaline or acidic catalyst) under the effect of condensation into the initial urea-formaldehyde resin, and then in the curing agent or additives, the formation of insoluble, non-melt-end thermosetting resins. [1] The cured urea-formaldehyde resin is lighter than phenolic resin. Translucent, weak acid, weak base, good insulation performance, excellent abrasion resistance, cheap, it is the most varieties of adhesives. 

In particular, the manufacture of wood-based panels, urea-formaldehyde resins and modified products accounted for about 90%% of the total amount of adhesive. However, the encounter with strong acid, strong alkali is easy to decompose, bad weather resistance, the initial viscosity, contraction, brittle large, non-water resistance, easy aging, with urea-formaldehyde resin produced in the manufacturing and use of wood-based panels in the process of the release of the problem, it has to be modified.

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