本研究選用重量比70%煅燒高嶺土及30%爐石粉，作為無機聚合物之鋁矽酸鹽礦物原料，並利用其高強度及短凝結時間等特性，以機械發泡方式製作泡沫無機聚合物，並進行抗壓、抗彎、FTIR及吸水率等試驗量測。此外，利用Matlab影像處理分析孔洞分布情況，並討論空氣含量與層板厚度對泡沬無機聚合物抵抗聲音穿透之能力。

試驗結果顯示，本研究所製作之泡沫無機聚合物，其品質控制已達均一性，其中，製作泡沫無機聚合物所使用之發泡液，並不影響無機聚合物硬固後之材料性質。另外，單層板穿透損失試驗結果顯示，板厚度愈大者其聲音穿透損失值之增加量並不明顯，代表本研究之板厚度設計已超過臨界厚度之影響範圍。此外，泡沫無機聚合物空氣含量越高者，其穿透損失值越大，其中，空氣含量對於低頻穿透損失之影響，較高頻時更加明顯，但當泡沫無機聚合物之單位重較大時，其穿透損失符合固體實心材料之質量定律。含泡沫無機聚合物心材之三明治層板試驗結果則顯示，兩實心面材將降低空氣含量對穿透損失之影響。

A mixture of 70 wt.% metakaolin and 30 wt.% blast furnace slag was used as a raw material for the production of mechanically foamed inorganic polymers due to its high early strength and short setting time. Furthermore, a series of measurements of compression, flexion, FTIR and water absorption on foamed inorganic polymers panels were conducted. Also, the cell size distributions of foamed inorganic polymers panels were characterized by using a Matlab image analyzer. Consequently, the sound insulation properties of foamed inorganic polymers panels with different density and thickness were compared to each other to evaluate the effects of porosity and thickness.

Experimental results indicate that the microstructure of foamed inorganic polymers is homogeneous and uniform and their physical properties are unchanged by the introduced pre-foaming agent. In addition, the effect of thickness on the sound insulation properties of foamed inorganic polymers panels is insignificant but the effect of porosity is dramatic. The transmission loss at low frequency is much larger than that at high frequency for foamed inorganic polymers panels with a higher porosity. As the porosity is reduced, the transmission loss of foamed inorganic polymers panels is more consistent with mass law. However, the transmission loss of foamed inorganic polymers is reduced due to the introduction of calcium silicate boards on their two side surfaces.

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