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논문 기본 정보

자료유형
학술저널
저자정보
Eom, Young-Geun (Department of Forest Products, College of Forest Science, Koomin National University) Kim, Jong-Sung (Department of Forest Products, College of Forest Science, Koomin National University) Kim, Sumin (Lap. of Adhesion & Bio-Composites, Major in Environmental Material Science, Seoul National University) Kim, Jin-A (Lap. of Adhesion & Bio-Composites, Major in Environmental Material Science, Seoul National University) Kim, Hyun-Joong (Lap. of Adhesion & Bio-Composites, Major in Environmental Material Science, Seoul National University)
저널정보
한국목재공학회 목재공학(Journal of the Korean Wood Science and Technology) 목재공학 제34권 제5호
발행연도
2006.1
수록면
29 - 41 (13page)

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This study was to investigate the effect of adding additive as tannin, rice husk and charcoal, for reducing the formaldehyde emission level, on the adhesion properties of urea-formaldehyde (UF) resin for particleboard. We controlled the hot-pressing time, temperature and pressure to determine the bonding strength and formaldehyde emission. Blends of various UF resin/additives (tannin, rice husk and charcoal) compositions were prepared. To determine and compare the effect of additives (tannin, rice husk and charcoal) content, 0, 5, 10 and 15%, by weight of UF resin, were used. $NH_4Cl$ as hardener added. To determine the level of formaldehyde emission, we used the desiccator, perforator and 20 L-small chamber method. The formaldehyde emission level decreased with increased additions of additive (except rice husk). Also, increased hot-pressing time decreased formaldehyde emission level. At a charcoal replacement ratio of only 15%, the formaldehyde emission level is under F &#x2729; &#x2729; &#x2729; &#x2729; grade (emit < $0.3mg/{\ell}$). Curing of the high tannin additive content in this adhesive system indicated that the bonding strength increased. But, in the case of rice husk and charcoal, the bonding strength was much lower due to the inorganic substance. Furthermore, rice husk was poor in bonding strength as well as formaldehyde emission than tannin and charcoal.

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