Effect of thermal treatment on some mechanical properties of Acacia hybrid wood
Keywords:
Acacia hybrid wood, thermal treatment, wood strengthAbstract
High temperature treatment is an environmentally friendly method
suitable for improving the wood quality. However, in some cases, the
mechanical properties of heat - treated wood are decreased For studying
the impact of this method on acacia’s wood, In this study, the Acacia
hybrid wood was treated in nitrogen gas under laboratory conditions for
2 - 6h at 210oC - 230oC. The mechanical properties of treated wood,
including the modulus of rupture, modulus of elasticity and brittleness are
tested in parallel with untreated samples The results of analysis showed
that 3 factors including treatment temperature, treatment duration and
wood parts (sapwood and heartwood) have significant effects on the modulus and brittlenessof high - temperature treated wood, howerver, these
factors have no effect on the modulus of elasticity. The sresults also showed
that these properties were reduced significantly by heat, but there is not
effect of temperature and duration on them, excluding the brittleness.
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