The Effect of Modification with Epoxy and Polyester Resins on Some Mechanical Properties of Pine and Chestnut Woods
Abstract
In this study, the effects of epoxy and
polyester resin applications on some mechanical strength properties of scots
pine (Pinus sylvestris L.) and
chestnut (castanea sativa) wood
samples were investigated. Firstly, in the circular sawing machine, a different
numbers of channels (2+1 and 3+2)
were opened on the surfaces of wood samples. Then, these channels were filled
with casting type epoxy and polyester resins. The density, modulus of repture (MOR), modulus of
elasticity (MOE), and compression strength parallel to the grain (CS) tests
were performed on the samples. According to the results of the study, the
density values of pine and chestnut samples increased by 25% and 42%,
respectively, depending on the number of channels after resin application. In addition,
compared with epoxy resin applied samples, the density increase was higher in
the polyester resin applied samples. After application of resins, a slight
increase was observed in the MOR and MOE values of chestnut samples. However,
CS values tend to decrease in these samples. In
pine samples with resin applied, the strength properties (MOR, MOE and CS)
decreased depending on the increase in the number of channels. Furthermore, the
effect of the resin type on all
strength properties of the samples was statistically
insignificant.
Keywords
Epoxy resin,Mechanical properties,Polyester resin,Wood material
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