Synthesis of modified urea-formaldehyde resin quaternary ammonium salt and its flocculation chemical property;

Research on a novel modified urea-formaldehyde resin with water-proof and heat-resistance;

The paper introduces the decorative three-ply wood for the exhibition made by impregnating modified urea-formaldehyde resin and hot pressing,the reason that causes much flexibility of this sheet during the piling at room temperature and the inquiry about the modification of the above-mentioned urea-formaldehyde resin with an acrylic resin.

Relationship between syntheticprocess and gluing property of modified UF resin

Primary factors analysis was used in this paper to analyze the factors affected the main guidelines such as the content of free formaldehyde,the solid content and storage stability in the synthesis process of modified UF resins using starchy oxide as the modifier.

Based on the mechanism of formaldehyde release from MDF and the methods for decreasing its amount, a formula of melamine modified UF resin was designed, and the choice of melamine dosage, molar ratio, additive and hardener was also investigated.