Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Sound Absorption Capability and Bending Strength of Miscanthus Particle Based Board

억새 파티클보드의 흡음성능과 휨강도성능

  • Kang, Chun-Won (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University) ;
  • Park, Hee-Jun (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University) ;
  • Jeon, Soon-Sik (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University)
  • 강춘원 (전북대학교 생활과학대학 주거환경학과, 전북대학교 인간생활과학연구소) ;
  • 박희준 (전북대학교 생활과학대학 주거환경학과, 전북대학교 인간생활과학연구소) ;
  • 전순식 (전북대학교 생활과학대학 주거환경학과, 전북대학교 인간생활과학연구소)
  • Received : 2011.11.01
  • Accepted : 2011.12.31
  • Published : 2012.01.25
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Abstract

Sound absorption capability and mechanical properties such as MOE and MOR in bending of miscanthus particle based board were estimated by the two microphone transfer function method and three point bending method, respectively. The results are summarized as follows: The sound absorption coefficients of miscanthus particle based board was higher than those of commercial gypsum board which is well used as sound absorbing barrier. The MOR and MOE of miscanthus particle based board increased with increasing of board density. The sound absorption coefficients of miscanthus particle based board were 50~80% in the frequency range of about 1~2.5 Khz. In entire frequency range, those value increased with target board density decreasing.

억새파티클보드의 흡음재로서의 사용가능성을 파악하고자 몇 가지 목표비중의 억새파티클보드를 제작하여 전달함수법(two microphone transfer function method)으로 상용주파수대역에서 흡음성능을 측정하고 휨강도 시험으로 역학적성질을 각각 측정, 비교하여 다음과 같은 결과를 얻었다. 측정주파수범위에서 거대억새보드의 흡음률이 상용석고보드보다 높은 흡음성능을 나타내었다. 탄성계수와 휨강도는 목표비중 증가에 따라 증가하는 경향을 나타내었다. 억새보드의 흡음률은 1~2.5 Khz 범위의 주파수범위에서 50~80%의 수치를 나타내다 이후 주파수에서는 30~50%의 흡음률을 나타내었으며 비중에 따라서는 비중이 증가할수록 흡음률이 낮아지는 경향을 보였다.

Keywords

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