폴리우레탄 다층구조의 감쇠 및 투과손실

이용건; 임이랑; 권오형; 윤관한; Yong Geon Lee; Yi Rang Lim; Oh Hyeong Kwon; Kwan Han Yoon

Polymer(Korea), Vol.29, No.3, 300-303, May, 2005

Export Citation

폴리우레탄 다층구조의 감쇠 및 투과손실

Damping and Transmission Loss of Polyurethane Multi-Layer

이용건, 임이랑, 권오형 , 윤관한 ^†

금오공과대학교 고분자공학과

Yong Geon Lee, Yi Rang Lim, Oh Hyeong Kwon , and Kwan Han Yoon^†

Department of Polymer Science and Engineering, Kumoh National Institute of Technology, 1 Yangho-dong, Gumi, Gyeongbuk, 730-701, Korea

E-mail:

초록

폴리우레탄을 PU1000(poly(propylene glycol), PPG, 분자량 1000 g/mol로 제조된 폴리우레탄)과 PU2000(PPG 분자량 2000 g/mol로 제조된 폴리우레탄)을 이용하여 다층구조와 발포체 다층구조로 제조하였고 동력학 특성과 음향특성을 기준물질인 PU1000과 비교 조사하였다. 다층구조 폴리우레탄의 감쇠 피크는 PU1000에 비해 낮은 온도로 이동한 반면에 발포체를 이용한 다층구조에서의 감쇠 피크는 PU1000에 비해 높은 온도로 이동하였고 감쇠 범위 또한 넓어졌다. 음향특성인 투과손실 측면에서 보면 다층구조의 투과손실은 기준이 되는 PU1000에 비해 100Hz이하와 600 Hz의 특정 주파수 영역에서 효과적이었고 발포체 다층구조의 경우는 실험 범위인 1000 Hz이하 전 영역에서 아주 우수한 투과손실이 얻어졌다.

Polyurethane multi-layer and foam multi-layer were prepared with PU1000 and PU2000 made by poly(propylene glycol) (PPG) having the molecular weight of 1000 and 2000 g/mol, respectively. The damping and transmission loss of these materials were compared with PU1000 used as a reference. The damping peak of polyurethane multi-layer was shifted to the lower temperature compared with PU1000, while the damping peak of polyurethane foam multi-layer was shifted to the higher temperature and broaden. In terms of noise reduction, the transmission loss of polyurethane multilayer was effective at the specific frequency range such as less than 100 Hz and around 600 Hz compared with PU1000. The transmission loss of polyurethane foam multi-layer was most effective in the whole experimental frequency range.

Keywords:polyurethane;multi-layer;foam layer;damping;transmission loss

[References]

Urick RJ, Principles of Underwater Sound, Mcgraw-Hill Inc., (1983)
Wang TT, Herbert JM, Glass AM, The Application of Feroelectric Polymers, Blackie & Sons Ltd., (1998)
Sperling LH, Introduction to Physical Polymer Science, Wiley-Interscience, New York (1986)
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Yoon KH, Yoon ST, Bang DS, Fibers and Polymers, 4, 49 (2003)

[Referenced By]

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[1] Urick RJ, Principles of Underwater Sound, Mcgraw-Hill Inc., (1983)

[2] Wang TT, Herbert JM, Glass AM, The Application of Feroelectric Polymers, Blackie & Sons Ltd., (1998)

[3] Sperling LH, Introduction to Physical Polymer Science, Wiley-Interscience, New York (1986)

[4] Ferry JD, Viscoelastic Properties of Polymers, Wiely & Sons, New York (1980)

[5] Hartmann B, "Acoustic Properties", in Encyclopedia of Polymer Science and Engineering, Wiely & Sons, New York (1984)

[6] Trask CA, Thomas DA, Hickey EC, Sperling LH, J. Appl. Polym. Sci., 19, 1731 (1989)

[7] Imani Y, Asano TJ, J. Appl. Polym. Sci., 27, 183 (1982)

[8] Kothandaraman H, Venkatarao K, Thanoo BC, Polym. J., 21, 829 (1989)

[9] Saxena PK, Srinivasan SR, Hrouz J, Ilavsky M, J. Appl. Polym. Sci., 44, 1343 (1992)

[10] Weibo H, Fengchan Z, J. Appl. Polym. Sci., 50, 277 (1993)

[11] Spathis G, Niaounakis M, Kontou E, Apekis L, Pissis P, Christodoulides C, J. Appl. Polym. Sci., 54(7), 831 (1994)

[12] Yoon KH, Yoon ST, Park OO, J. Appl. Polym. Sci., 75(5), 604 (2000)

[13] Yoon KH, Yoon ST, Bang DS, Fibers and Polymers, 4, 49 (2003)