Thermoplastic aceton-formaldehyde resin adhesive was added as a modifier for urea-formaldehyde resin adhesive and its effects on plywood smear strength and wood failure were investigated. The results are summarized as follows: 1) The plywood shear str...
Thermoplastic aceton-formaldehyde resin adhesive was added as a modifier for urea-formaldehyde resin adhesive and its effects on plywood smear strength and wood failure were investigated. The results are summarized as follows: 1) The plywood shear strength and wood failure showed the highest values at 120℃ of hot plate temperature, but the values decreased according to the rise of addition ratio of aceton resin. 2) The variation of molar ratio of aceton resin had no effect on plywood shear strength and wood failure. 3) The plywood bonded by the addition of aceton resin showed lower values than those of urea resin bonding plywoods in shear strength and wood failure. Therefore, aceton resin was inadequate as a modifier of urea resin adhesive.