• Journal of the Korean Wood Science and Technology
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• v.36 no.3
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• pp.39-46
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• 2008

Repeated impregnation and carbonization processes were performed to prepare high-density woodceramics using a sawdust board. The physical properties were investigated to confirm morphological and structural changes of one-time and two-time phenolic resin-treated and carbonized woodceramics. As comparing between one-time and two-time carbonized woodceramics, the weight and the density of the two-time carbonized woodceramics decreased with an increase of the amount of impregnated phenolic resin. In addition, when the amount of impregnated phenolic resin was about 40% in these woodceramics, the two-time carbonized woodceramics showed higher weight (23.8%) and density (30.0%) than the one-time treatment.

• Journal of the Korean Wood Science and Technology
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• v.37 no.6
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• pp.517-523
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• 2009

Repeated impregnation and carbonization processes were performed to prepare high-density woodceramics using a sawdust board. The physical properties were investigated to confirm morphological and structural changes of one-time and two-time phenolic resin-treated and carbonized woodceramics. As comparing between one-time and two-time carbonized woodceramics, the weight and the density of the two-time carbonized woodceramics decreased with an increase of the carbonization temperature. When the carbonization temperature was $600^{\circ}C$, the weight increased by 21.7% and density increased by 20.6% from $0.68g/cm^3$ to $0.82g/cm^3$, respectively, as a maximum value.

• Journal of the Korean Wood Science and Technology
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• v.41 no.2
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• pp.105-110
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• 2013

A repeated impregnation and carbonization process was performed to prepare high-density woodceramics using MDF. The physical properties were estimated to further confirm morphologically structurally occurred changes of one-time and two-time phenolic resin treated and carbonized woodceramics. As compare one-time and two-time carbonized woodceramics, the increasing rate of weight and density declined after second carbonization as the resin impregnation ratio grew higher, and when the resin impregnation ratio was 40 percent, the weight and density of the second carbonization increased more than in the first step by 20.5% and 33.9% respectively which were the highest rates.

• Journal of the Korean Wood Science and Technology
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• v.39 no.1
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• pp.60-67
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• 2011

A repeated impregnation and carbonization process was introduced to product high-density woodceramics using a resin impregnation board. The density profile were measured to further confirm morphologically and structurally occurred changes of one-time and two-time phenolic resin-treated and carbonized woodceramics. After the two-time carbonization of the products, the minimum, average and maximum densities increased more than those of the one-time carbonized woodceramics, and the increase of density profile. Therefore, it is considered that the preparation of uniformed woodceramics with high-density and low density dissipation can be produced by a repeated impregnation and carbonization).