Impact Of Heat Treatment On Weight Loss During Combustion Of Laminated Veneer Lumber (LVL)

Year 2019, Volume: 22 Issue: 2, 437 - 442, 01.06.2019

Osman Perçin Mustafa Altunok

https://doi.org/10.2339/politeknik.404011

Abstract

This study was performed to
determine the effects of heat treatment on weight loss during combustion of the
laminated wood materials produced from Oriental beech (Fagus orientalis L.),  scotch
pine (Pinus sylvestris L.), sessile
oak (Quercus petraea L.), and poplar
(Populus nigra L.) veneers bonded
with PVAc-D₄, PUR and MF adhesives. For this aim, the weight loss
during combustion of the test samples was determined according to ASTM E
160-50. The results of this study indicated that the weight loss percentage was
the highest in poplar wood (89.17%), PVAc-D₄ adhesive (89.79%) and
control samples (88.69%). In the interaction of the wood materials and type of
adhesive, the highest value was measured in poplar+PUR (90.93%), interaction of
the wood materials and heat treatment in poplar + control samples (90.87%), in
the interaction of the type of adhesive and heat treatment in PVAc-D₄
+ 185 °C (91.10%). In the interaction of the wood material, type of adhesive
and heat treatment temperature, the highest value was determined in laminated
control poplar samples with PUR adhesive (93%), while the lowest in laminated
scotch pine samples with MF and heat-treated at 185 °C (81.83%). The use of laminated
and heat-treated wood material in places where in high risk of fire,
impregnation of wood material with fire-retardant compounds can be suggested.

Keywords

Heat treatment, weight loss, combustion, adhesive, wood material

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