Synthesis and Characterization of High Performance Water-based Phenolic Resins
The effect of plant polyphenols and rare earth metal catalysts on phenol formaldehyde (PF) resin's bonding strength and toughness were investigated.The results showed that plant polyphenols could improve the performance of PF resin.When the ratio of plant polyphenols was 20%,its bonding strength was increased by 16% and distance of breaking point was doubled while the performance of heat resistance was reduced.Rare earth metal catalysts could further improve bonding strength of PF resin which containing polyphenols (PPF resin).PPF resin had a wide particle size distribution in the aqueous solution.With the increase of plant polyphenols,PPF surface tension was reduced while bonding strength was increased.