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Study on Quality Criteria for Transparent Soundproof Panels(2) - Sound Insulation Characteristics and Evaluation of Weatherability

투명방음판의 품질기준 설정에 관한 연구(2) - 음향 특성 및 내후성 평가

  • Received : 2012.08.09
  • Accepted : 2012.10.18
  • Published : 2012.11.20

Abstract

Transparent noise barrier panels have the advantages of transmitting light to nearby residents and allowing drivers to orientate themselves by providing views of the surrounding area. To develop guidelines on quality criteria for transparent soundproof panels, their sound transmission loss and weatherability were experimentally investigated. In Korea, the sound transmission loss of noise barrier panels should be more than 25 dB at 500 Hz and 30 dB at 1000 Hz. The transmission loss tests of transparent panels were performed in accordance with KS F 2808. Typically, plastic materials suffer from color changes when exposed to ultraviolet(UV) light over extended periods. Therefore, weathering of plastics is one of the most important properties for outdoor applications. Protection against UV radiation and weathering is usually accomplished by using UV stabilizer additives or coatings. Transparent materials for soundproof panels were examined through accelerated weathering tests and their weathering resistances were evaluated from changes in yellowness index.

Keywords

References

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