| 摘要: | 因環保意識的抬頭，綠色產品的相關議題也受到重視，以可分解材料為出發點，製作可分解一次性材料以取代不環保材料用完即丟的缺點。本研究使用分解性佳且具環保性的聚氨酯為主材料，搭配具表面多孔性、開放孔洞之活性碳為掺合材料，以20mL、40mL、60mL發泡劑與20g、30g、40g活性碳製作板材，並尋找最佳組合。在吸音方面，因為發泡產生空腔與聲音產生共振，而達到高頻吸音效果佳，在PU發泡劑/活性碳:60mL/ 40g板材中，因為改變密度與孔洞的產生，使高頻4000Hz吸音率為0.826，低頻250Hz吸音率為0.312，效果相較無活性碳之基材吸音效果提升50%。在機械性質方面，60mL/40g其板材結構較緊密達46.21g-cm衝擊強力較佳。經吸音與撞擊效果統整比較，60mL/30g高頻吸音率0.791，衝擊強力達39.82g-cm，其效益最佳，原因在於重量最輕。
Due to the rise of environmental awareness, green products related issues have taken to the decomposition of materials as the starting point also, the production of decomposable disposable materials to replace the endless use of environmentally friendly materials shortcomings. In this study, we use 20mL, 40mL, 60mL foaming agent and 20g, 30g, 40g activated carbon with the activated carbon as the main material and the active carbon with surface porosity and open pores as the main material. Plate, and find the best combination. In the case, the cavity and the sound generated by the bubble resonance of sound absorbing, and to achieve high frequency and sound-absorbing effect. In the PU foaming agent / activated carbon with 60ml / 40g plate, because the change in density and whole generation, high frequency 4000Hz rate of 0.826, low frequency 250Hz sound absorption rate of 0.312, the effect of sound enhancement compared to the non-activated carbon substrate increased 50%. In the mechanical properties, 60mL/40g of its sheet structure is closer to 46.21g-cm impact strength is better. Comparing with sound and impact effects, 60mL/30g high frequency sound absorption rate of 0.791, the impact of strength of 39.82g-cm, the best benefits, because the lightest weight. |
