Evaluation of Material Properties of Acetylated Medium Density Fiberboard (MDF)

This study examined the material properties of MDF manufactured using acetylated pinus radiata fibers against moisture and compared the properties with the fiberboard quality standards of KS F 3200. Since acetylated MDF shows very low moisture content, water absorption and thickness swelling than th...

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Published in목재공학 Vol. 48; no. 3; pp. 393 - 404
Main Authors LEE, Jong Shin, KIM, Soung Joon
Format Journal Article
LanguageKorean
Published 2020
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Abstract This study examined the material properties of MDF manufactured using acetylated pinus radiata fibers against moisture and compared the properties with the fiberboard quality standards of KS F 3200. Since acetylated MDF shows very low moisture content, water absorption and thickness swelling than the quality standards, it is expected to have an excellent dimensional stability. The bending strength in wetting condition of the acetylated MDF reached approximately 70% of the bending strength in dry condition, making it suitable for the quality standards. The internal bond of the acetylated MDF in the wetting condition was higher than the minimum internal bond of the quality standards in the dry condition, showing a good water resistance. Since the water droplet contact angle of the acetylated MDF is larger than that of untreated MDF, it is determined that it contributes in improving the water resistance due to the low wettability. 아세틸화 처리한 라디에타소나무 섬유를 사용하여 제조한 MDF의 수분에 대한 재질 특성을 조사하고 KS F 3200의 섬유판 품질기준과 비교하였다. 아세틸화 처리 MDF는 품질 기준보다 매우 낮은 함수율과 수분 흡수성 및 두께 팽창율을 보여 우수한 치수안정성을 기대할 수 있다. 아세틸화 처리 MDF의 습윤 시 휨강도는 기건 상태 휨강도의 약 70% 이상에 달해 품질 기준에 적합하였다. 아세틸화 MDF의 습윤 시 박리강도가 품질기준의 기건 상태의 최저 박리강도보다 높은 결과를 보여 내수성이 매우 우수하였다. 아세틸화 MDF의 물방울 접촉각은 무처리 MDF에 비하여 커서 낮은 습윤성에 의한 내수성 향상에 기여하는 것으로 판단된다.
AbstractList This study examined the material properties of MDF manufactured using acetylated pinus radiata fibers against moisture and compared the properties with the fiberboard quality standards of KS F 3200. Since acetylated MDF shows very low moisture content, water absorption and thickness swelling than the quality standards, it is expected to have an excellent dimensional stability. The bending strength in wetting condition of the acetylated MDF reached approximately 70% of the bending strength in dry condition, making it suitable for the quality standards. The internal bond of the acetylated MDF in the wetting condition was higher than the minimum internal bond of the quality standards in the dry condition, showing a good water resistance. Since the water droplet contact angle of the acetylated MDF is larger than that of untreated MDF, it is determined that it contributes in improving the water resistance due to the low wettability. 아세틸화 처리한 라디에타소나무 섬유를 사용하여 제조한 MDF의 수분에 대한 재질 특성을 조사하고 KS F 3200의 섬유판 품질기준과 비교하였다. 아세틸화 처리 MDF는 품질 기준보다 매우 낮은 함수율과 수분 흡수성 및 두께 팽창율을 보여 우수한 치수안정성을 기대할 수 있다. 아세틸화 처리 MDF의 습윤 시 휨강도는 기건 상태 휨강도의 약 70% 이상에 달해 품질 기준에 적합하였다. 아세틸화 MDF의 습윤 시 박리강도가 품질기준의 기건 상태의 최저 박리강도보다 높은 결과를 보여 내수성이 매우 우수하였다. 아세틸화 MDF의 물방울 접촉각은 무처리 MDF에 비하여 커서 낮은 습윤성에 의한 내수성 향상에 기여하는 것으로 판단된다.
Author LEE, Jong Shin
KIM, Soung Joon
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Keywords acetylation
water absorption
medium density fiberboard
moisture content
dimensional stability
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