Ureum formaldehyde gompoeier ， gereed vir versending ~

Produkbeskrywing
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. Termoseting hars. 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. Ureum-formaldehiedhars is egter maklik om te ontbind as dit aan sterk sure en alkalies blootgestel word. Dit het swak weerweerstand, swak aanvanklike viskositeit, groot krimping, brosheid, waterweerstand en maklike veroudering. Kunsmatige planke vervaardig met ureum-formaldehied-hars-vrystelling formaldehied tydens die vervaardigings- en gebruiksproses. Probleem, so dit moet verander word.

Toepassing

Ureum-formaldehiedhars is die mees gebruikte kleefmiddel. 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.