Foamed phenol formaldehyde (PF) with naturel foaming agent and characterization adhesive properties

Abstract

In this study, the phenol formaldehyde resin volume was increased (foamed) using naturalfoaming agents. Increasing production costs force manufacturers to produce using fewer raw materials. Inrecent years, in the wood sector, studies have been carried out on glue efficiency by foaming the glue. Inthis study, egg white (EW), sodium bicarbonate (SB), cattle gelatin (GL), wheat starch (WS) and wheatflour (WF) were used as foaming agent. 5-10 % foaming agent was added to the PF and foamed by mixingat 3000 rpm with a mechanical mixer. Foamed PF has been used to bond black pine wood (BP). Internalbond (IB), density, water absorption (WA) and jell time analyses were performed to characterize foamedPF. The foamed sample made with EW was determined to be the best by the study's findings. In terms ofincreasing IB strength, the foaming process with GL has also been successful. Other foaming agents havealso been successful in the foaming process, but their IB strength has been reduced. In this regard, it isadvantageous to use EW and GL agents for foaming PF glue. More research should be done on this topicto determine how different foaming agents, in different proportions, affect the efficiency of glues. Gluesavings can thus be realized in industries that use glue.