Analysis of the Polymer Properties and Sound Characteristics of Interlayer Films for Laminated Glass

접합유리용 고분자 필름의 물성 및 음향학적 특성 분석

  • Ko, Sangwon (Transportation Environmental Research Team, Korea Railroad Research Institute) ;
  • Hong, Jiyoung (Transportation Environmental Research Team, Korea Railroad Research Institute) ;
  • Sunwoo, Yerim (School of Chemical Engineering, Sungkyunkwan University) ;
  • Kim, Young Jun (School of Chemical Engineering, Sungkyunkwan University)
  • Received : 2014.11.13
  • Accepted : 2016.01.04
  • Published : 2016.02.29


To improve the sound insulation performance of laminated glass in high speed trains, it is beneficial to study the relationship between the characteristics of interlayer films and the acoustical performance. In addition to those of conventional PVB (polyvinyl butyral), the dynamic mechanical properties of PVB derivatives and PC (polycarbonate), which are candidates for interlayer films, were analyzed. We assumed that PVB-HEMU, which has a glass transition temperature ($T_g$) around room temperature and a large tan ${\delta}$ (loss tangent) value, can be made to damp efficiently. The damping capability was tested utilizing sound transmission loss measurement and simulation under the identical structure of laminated glass in high speed trains. We also built a database for analysis of relations between interlayer film characteristics and acoustical performance; this was followed by the determination of sound transmission loss using the intensity technique and FEA.


Grant : 철도 친환경성 향상기술 개발

Supported by : 한국철도기술연구원


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