Abstract We examine the mechanism of pyrolysis and charring large (> 10,000 atom) phenol–formaldehyde resin structures produced using pseudo-reaction curing techniques with formaldehyde/phenol ratios 1.0, 1.5 2.0. utilise Reactive Molecular Dynamics (RMD) a hydrocarbon oxidation parameter set to simulate high-temperature thermal decomposition these resins at 1500, 2500 3500 K. Our results de...

Abstract Thirty-six resins, each with two replicates, were factorially prepared with three formulation variables: molar ratios of sodium hydroxide to phenol of 0.4, 0.7, and 1.0; levels of resin solids content of 37, 40, and 43 percent; and molar ratios of formaldehyde to phenol of 1.6, 1.9, 2.2, and 2.5. Glue bond quality decreased substantially with a change of NaOH/phenol ratio from 0.4 to 0...

The brown-rotted wood was liquefied in phenol with phosphoric acid as catalyst and the resulting liquefied products were condensed with formaldehyde to yield novolak liquefied wood-based phenol formaldehyde resin (LWPF). The results showed that brown-rotted wood could be more easily liquefied than sound wood in phenol. The residue content of liquefied wood decreased continually with the progres...