木質有機緩衝材對樓板衝擊音降低量之影響-以栓皮櫟韌皮複合材為例

現今建築樓板緩衝材大多為石化、礦物纖維等高耗能製成材料，易造成空氣汙染並破壞環境。本研究因應近年聯合國永續發展之推動，以自然資源之永續管理及有效率使用之觀點，探討木質再生組織循環利用作為樓板緩衝材之可行信。本研究以栓皮櫟韌皮部位作為對象，針對不同比例之韌皮部顆粒混和澱粉、甘油、冰醋酸等材料，製成對環境相較溫和之木質有機緩衝材，並與現有市售之栓皮櫟粒片板、發泡橡膠、聚胺脂發泡、聚氯乙烯發泡緩衝材針對厚度不同變化設定變因進行樓板衝擊音隔音性能比較。本研究參照 CNS 15160 6、CNS 15160 8樓板衝擊音隔音之實驗室量測法，並依 CNS 8465 2進行樓板性能評估，於國立屏東科技大學聲學實驗室進行測試，基準樓板為厚度 15 cm之鋼筋混擬土，其面積為 10.8 m²，而樓板表面材衝擊音之探討以 0.36 m²之試體面積進行實驗分析。本研究結果顯示，在使用木地板或水泥砂漿當作表面材時，當自製栓皮櫟樹皮顆粒比例增加，其加權衝擊聲壓位準降低量 ΔLw約可增加 2~3 dB之隔音性能，顯示本研究之木質有機緩衝材可提升樓板表面材之衝擊音隔音性能。此外，本研究之木質有機緩衝材與目前常見之發泡類緩衝材之衝擊音具有相同之隔音特性，顯示材料性能具有於隔音應用之可行性研究成果可作為設計應用之參考並有利於永續發展之推動。

關鍵字

樓板衝擊音；栓皮櫟；循環利用

並列摘要

Nowadays, most of the building floor resilient materials are made of high-energy-consuming materials such as petrochemicals and mineral fibers, which are likely to cause air pollution and damage the environment. In response to the sustainable development of the United Nations in recent years, this research focuses on the sustainable management and efficient use of natural resources and the main purpose of this research is to recycle wood regeneration tissues. In this study, the phloem part of the cork oak is used as the main object, starch, glycerin, glacial acetic acid and other materials were then mixed with different proportions to make wooden organic resilient materials that are milder to the environment, comparing with the existing commercially available cork oak grain sheets, foamed rubber, polyurethane foam, and PVC foamed resilient materials on the impact sound insulation performance of floor slabs according to different thickness changes. This research experiment refers to the laboratory measurement method of CNS 15160-6 and CNS 15160-8 floor impact sound insulation, and evaluates floor performance according to CNS 8465-2. This research experiment was tested in the Acoustics Laboratory of National Pingtung University of Science and Technology. The reference floor is a inforced concrete with a thickness of 15 cm and its area is 10.8 m². The impact sound of the floor slab surface material is discussed with a sample area of 0.36 m² for experimental analysis. The results of this study show that when wood-based floors or cement mortar are used as surface materials, when the proportion of homemade cork oak bark particles increases, the weighted impact sound pressure level reduction ∆Lw can increase the sound insulation performance by about 2~3 dB, which proves the wooden organic resilient materials in this study can improve the impact sound insulation performance of the floor surface material. In addition, the impact sound insulation performance of the wooden organic resilient materials in this study is equivalent to the current common foam resilient materials, It shows that the material performance has the feasibility of sound insulation application. The research results can be used as a reference for design and application, and it is conducive to the promotion ofsustainable development.