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논문 기본 정보

자료유형
학술저널
저자정보
Yoon, kwan-Han (School of Advanced Materials and System Engineering, Kumoh National Institute of Technology) Kim, Ji-Gon (School of Advanced Materials and System Engineering, Kumoh National Institute of Technology) Bang, Dae-Suk (School of Advanced Materials and System Engineering, Kumoh National Institute of Technology)
저널정보
한국섬유공학회 Fibers and Polymers Fibers and polymers 제4권 제2호
발행연도
2003.1
수록면
49 - 53 (5page)

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Polyurethane (PU) layer and copolymer consisted of the different molecular weights (1000 and 2000 g/mol) of poly(propylene glycol) (PPG) were prepared. The damping and mechanical properties of these materials were compared with PU 1000 made by PPG having the molecular weight of 1000 g/mol. The optimum composition of PU2000 used for PU layer and copolymer was diphenylmethane diioscynate (MDI)/propylene glycol (PPG)/butanediol (BD) (1/0.3/0.7) based on the damping and mechanical properties. The damping peak of PU copolymer was higher than those of PU layer and PUI 1000 in low temperature range (-30- $10^{\circ}C$). For application in noise reduction, the transmission loss of the mechanical vibration through solid structure was measured. PU layer and copolymer were used as a damping layer. The transmission loss of PU copolymer was more effective than those of PU layer and PU 1000 in the experimental frequency range.

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