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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Keon-Ho (Department of Forest Products, Korea Forest Research Institute) Kim, Se-Jong (Department of Forest Products, Korea Forest Research Institute) Yang, Sang-Yun (Department of Forest Science, College of Agriculture & Life Sciences, Seoul National University) Yeo, Hwanmyeong (Department of Forest Science, College of Agriculture & Life Sciences, Seoul National University) Eom, Chang-Deuk (Department of Forest Products, Korea Forest Research Institute) Shim, Kugbo (Department of Forest Products, Korea Forest Research Institute)
저널정보
한국목재공학회 목재공학(Journal of the Korean Wood Science and Technology) 목재공학 제43권 제5호
발행연도
2015.1
수록면
682 - 690 (9page)

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초록· 키워드

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The bonding performance of two types of wood adhesives, namely phenol-resorcinol-formaldehyde (PRF) resin and melamine-urea-formaldehyde (MUF) resin for glued laminated timber manufactured by high frequency (HF) heating was evaluated. The HF heating system consists of HF oscillator with dielectric heating system for curing adhesives, and hydraulic press system for clamping glued laminated timber. The designed frequency and output power of the HF system was as 5 MHz and 60 kW, respectively. To verify dielectric heating mechanism under HF oscillation, the heat loss factors of laminae and adhesives were measured. The results show that it is possible to selectively heat adhesives for their curing due to the remarkably higher loss factor of the adhesives than those of wood laminae. The temperature of adhesive in the bonding line reached up to the set temperature within a few seconds by high frequency oscillating, which advanced the curing of adhesive afterwards. The bonding performance, such as shear strength of bonding line, water soaking delamination, and boiling water soaking delamination of PRF resin met the requirement of Korean Standard (KS), however the MUF resin did not meet the KS requirement of boiling water soaking delamination. These results indicate that the HF heating system is successful to manufacture glued laminated timbers with PRF resins to meet the bonding requirements.

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