Properties of Pinus densiflora Timber Wood by High Temperature Linseed Oil Treatment

This study attempted to evaluate the water repellency and drying effectiveness of linseed oil treated-solid wood at high temperature by immersion. The moisture content of green wood (Pinus densiflora) sample (above 90%) was reduced about 10% after 6 hours treatment at 150℃. When the treated samples were cut into cross section along the length, it was observed that the linseed oil penetrated into up to 20% of the sample cross section area in all locations. However, a strength loss of the specimen was not detected. The pre-drilling before linseed oil treatment was effective in reducing the defects such as checks and splits, and improved the linseed oil penetration into all samples from the surfaces. The result of water absorption test of treated-wood showed that the water repellent efficacy of treated-wood was greater than that of the control. The anti-fungal activity of treated samples using five sap stains and thee decay fungi was not detected in broad-spectrum toxic mechanism. However, decay test using white rot fungi (Tyromyces palustris) and brown rot fungi (Trametes versicolor) showed that the treated sample has a decay resistance to these two fungi.

고온아마인유처리에 의한 소나무재의 특성

본 실험은 건조되지 않은 목재를 고온의 아마인유에 침지처리함으로써 목재건조와 동시에 발수효과를 얻고자 실시하였다.함수율 90% 이상의 소나무생재를 온도 150℃의 아마인유에서 6시간 침지처리하였을 때 목재함수율은 10%까지 떨어졌으며, 목재 축방향의 깊이에 관계없이 목재단면의 20%에 해당하는 아마인유가 침투하였다. 이때 목재의 강도적 손실은 발생하지 않는 것으로 나타났다. 목재표면의 천공처리는 목재의 내부할열방지에 효과적이었고, 아마인유의 깊은 침투를 유도할 수 있었다. 흡수성 시험 결과 처리재는 무처리재에 비하여 높은 발수효과를 나타냈다. 변색균 및 부후균에 대한 항균효력시험은 처리재 자체로서 균에 대한 독성 기작이 없었으나, 백색부후균 및 갈색부후균에 대해서는 무처리재보다 낮은 중량감소율을 나타내는 등 방부효력의 상승이 있었다.