Dimensional stability of wood through nanomaterials dispered polyurethane coating
Keywords:
Dimensional stability, nanocoating, wood coatingAbstract
Polyurethane coating containing nanomaterials of TiO2 size 21nm and
under 100nm evaluated the improvement of dimensional stability of Acacia
hybrid and Styrax tonkinensis wood. With coatings for Aacacia hybrid
wood, coatings dispered nanomaterials reduce 50% dimensional stability of
wood less than that without nanomaterials. In contrast, addition of TiO2 into
polyurethane increase dimensional stability of Styrax tonkinensis wood. But
maximum value of ASE is approximately 16% happening when TiO2 with
size less than 100nm added. The combination of TiO2 and nanoclay in
coating only improve dimenional stability in case nanoclay modified. With
hydrophilic clay, the combination reduce this property. Almost result of this
study indicate that, polyurethane coating improve dimensional stability
limited
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