It has been suggested that the leachability of the water-borne fire-retardants (FRs) guanylurea phosphate (GUP)/boric acid (BA) in treated wood could be reduced with the help of melamine formaldehyde (MF) resin (Lin et al. 2020). The mechanism on how the MF resin reduced the leachability of the FRs was however unclear. In this study, the morphologies of untreated, MF resin modified, as well as FRs with MF resin modified wood were investigated by an optical microscope intended to determine the mode of action of the resin with the FRs.
Keywords: resin, Pinus sylvestris, fire-retardant
Authors
Chia-feng Lin
Olov Karlsson
George Mantanis
Dennis Jones
Dick Sandberg
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