Polvo de pegamento de formaldehído de urea, listo para el envío ~

Descripción del Producto
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. Resina termoestable. 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. Sin embargo, la resina de urea-formaldehído es fácil de descomponer cuando se expone a ácidos y álcalis fuertes. Tiene poca resistencia al clima, mala viscosidad inicial, gran contracción, fragilidad, resistencia al agua y un envejecimiento fácil. Tableros artificiales producidos con formaldehído de liberación de resina de urea-formaldehído durante el proceso de fabricación y uso. problema, por lo que debe modificarse.

Solicitud

La resina de urea-formaldehído es el tipo de adhesivo más utilizado. 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.