Development of Cost‐Effective and Highly Transparent Melamine Formaldehyde Resin Modified With Sodium Chloride for Enhancing Glossiness and Abrasion Resistance of Melamine Impregnated Paper

ABSTRACT This research investigated an environmentally improved MF resin formulation achieved by incorporating sodium chloride for use in highly transparent decorative paper in building and construction applications. Herein, for the first time, a novel eco‐friendly MF composite was designed through the use of sodium chloride. The results indicated that sodium chloride increased the viscosity and solid content of the resin while reducing its storage stability and formaldehyde emission. The modified resins exhibited shorter curing times and enhanced laminated surfaces' glossiness and abrasion resistance. Fourier transform infrared (FTIR) spectroscopy revealed that sodium chloride altered the chemical structure of the resin, which was further supported by thermogravimetric analysis (TGA) showing changes in the thermal degradation process. Differential scanning calorimetry (DSC) confirmed an increase in the glass transition temperature ( T g ) of the resin, suggesting altered curing dynamics. Sodium chloride is not only harmless and cost‐effective, but it has also improved the surface properties of melamine paper, including surface gloss and abrasion resistance. The results indicated that sodium chloride‐modified MF resin had considerable potential as a cost‐effective reinforcing filler. This makes it a viable option for industrial applications in decorative paper impregnation and lamination, where surface quality is prioritized.