Synthesis and Comparison of Phenol-Urea-Formaldehyde (PUF) Thermosetting Resin with Commercial Synthetic Resins Sinha Satish Kumar1,*, Khali D. P.2 1A.S.P.E.E. College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat, India 2Forest Products DivisionForest Research Institute, Dehradun, Uttarakhand, India *Corresponding Author E-mail: sinhafri@gmail.com
Online published on 17 October, 2015. Abstract Phenol-urea-formaldehyde (PUF) thermosetting resin was synthesized by reacting methylol phenol with urea under acidic condition and its bonding strength was compared with commercial synthetic resins (PF resin, UF resin and PUF resin made by mechanical blending of PF and UF resins). The results indicated that PUF resin made by this process performed better bonding strength than commercial UF resin and mechanical blending of PF and UF resins in both dry and wet conditions. Its bonding strength was found to be intermediate to UF and PF resins. Top Keywords PUF resin, PF resin, UF resin, Glue shear strength, Glue failure. Top |