Akademik Veri Yönetim Sistemi
Materials International, cilt.2, sa.2, ss.117-122, 2020 (Hakemli Dergi)
Effects of various fire retardant chemicals on fire and technological properties of laboratory made oriented
strandboards (OSBs) were investigated. Aspen chips were used in the production of OSB panels. An exterior liquid
phenol formaldehyde resin with 47 percent solid content was used as adhesive. There was no addition of any hardener
and filling materials into resin in the OSB manufacturing. Boron compounds such as borax and boric acid, and
phospate compounds such as monoammonium phosphate and diammonium phospahate were used as fire retardant
chemicals in the OSB panels. An exterior liquid phenol formaldehyde resin was used as adhesive. The chemicals in
powder form were added into the resin blender at contents of 2%, 4%, and 6% based on oven-dry wood weight. The
OSB panels containing borax had the highest thickness swelling, followed by the panels containing boric acid,
monoammonium phospahate, and diammonium phosphate, respectively. Increasing the content of these chemicals in
the OSB resulted in greater thickness swelling. For the mechanical properties, the chemicals can be used up to oven
dry particle weight of 6% in the panels at humid and dry conditions because of the fact that they met the standard
values of mechanical properties given in TS EN 300 for types of OSB/3 (exterior type. Fire resistance of the panels
was improved with increased chemical content in the panels.