urea-formaldehyde resin


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urea-formaldehyde resin

[yu̇′rē·ə fȯr′mal·də‚hīd ′rez·ən]
(organic chemistry)
A synthetic thermoset resin derived by the reaction of urea (carbamide) with formaldehyde or its polymers. Also known as urea resin.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
There are four types of wood dust in the aspects of dust production: MDF, urea-formaldehyde resin, natural softwood (pine), and natural hardwood (oak).
It should be pay attention to that too long hot-pressing time or too high temperature would make urea-formaldehyde resin cured excessively to lead to embitterment, which could reduce the properties of the composite board [5, 6].
S, "Urea-Formaldehyde Resins III Constitutional Characterization by [.sup.13]C Fourier Transform NMR Spectroscopy." J.
1) is much greater than in case of the composites made of oak wood flour / urea-formaldehyde resin.
where [C.sub.pw] is specific heat of water (J/kgK) and [C.sub.pr] is specific heat of urea-formaldehyde resin (J/kgK).
For the manufacture of panels were used polyurethane resin based on castor oil and urea-formaldehyde resin.
Surface coatings of melamine-modified urea-formaldehyde resins (MUFs) containing ammonium polyphosphate (APP) have been shown to significantly improve the fire retardancy of wood by prolonging the ignition time and reducing the heat release rate, total heat released, and mass loss rate.
However, it seems that a mixture of a low percentage of urea-formaldehyde resin with cassava starch would be a viable alternative binder to manufacture particleboard with acceptable mechanical properties and enhanced surface quality.
Influence of acrylamide copolymerization of urea-formaldehyde resin adhesives to their chemical structure and performance.
Effects of formaldehyde to urea mole ratio on thermal curing behavior of urea-formaldehyde resin and properties of particleboard.
MWP = particleboard with mixed wood particles/recycled plastic; OF = urea-formaldehyde resin; WP = wood particleboard.