Urea Formaldehyde Resin
Ureaformaldehyde resin UF
Specifications 24.1-33578130-003:2011 (gradeА, grade B, grade MDF)
The product of urea polycondensation with ureaformaldehyde concentrate, is an aqueous suspension, non-flammable, non-explosive. UF resin of lowered toxicity withfree formaldehyde content not above 0.1%.
It is used as an binding agent in the manufacture of particle board by hot pressing, forming adhesive compound of average humidity (grade A), plywood (grade B), medium density fiberboard (grade MDF), for furniture production and use in the manufacture. Using UF resin allows to produce plates of lowered toxicity Class E-1, 1/2 E-1, E-0.
Physical and chemical properties of UF resin
|Grade А||Grade B||Grade MDF|
|Appearance||Homogeneous white suspension without mechanical inclusions1)||Homogeneous suspension from white to light yellow without mechanical inclusions1)||Homogeneous white suspension without mechanical inclusions1)||
|Density at 200 С, g/sm3||1,28-1,30||not standardized||1,28+0,01|
|Mass fraction of solids, %||not less 65,0(at 1200 С)||66,02,0( at 1000 С)||66,0+1,0(at1000С)|
|Mass fraction of free formaldehyde, %, not above||0,1||0,15||0,1|
|Conventional viscosity for viscometers ВЗ-4 (nozzle 4,0000,015 mm), s||70-100||50-100||70-100|
|Brookfield dynamic viscosity, MPа·с||520 ±50||not standardized||not standardized|
|Concentration of hydrogen ions, рН||7,8±0,2||7,5-8,5||8,5+0,5|
|Jelltime at 1000С, с, not above||57||70||60|
|Limits of watertolerance, at which there is coagulation, by volume||above 1,2||1:2 – 1:10||above 1,2|
|Buffer capacity, ml||–||–||14+3|
Guaranteed shelflife ofUF resin – 45 daysfrom date of its producing at a temperature of 50С- 250С.
UMF resin is stored in clean closed tanks, protected from sun raises affect and atmospheric condensation, stirring periodically.
Shipment of Goods is made by road or rail tanks.