以70%偏高嶺土和30%高爐爐石粉混合作為原料，並以機械發泡的方式製作發泡無機聚合物（簡稱FIP），其中，包含有0.4～1.0 g⁄cm^3 等多種不同密度和6、10及14等三種不同厚度之FIP試體。採用X射線衍射（XRD），紅外線光譜（FTIR）和數位影像分析偏高嶺土、爐石粉、無機聚合物膠結材和FIP試體的微結構特點。也評估攪拌時間、水/固比和發泡劑對無機聚合物膠結材的屬性之影響。此外，通過進行一系列的測量，獲得FIP試體的孔徑分佈、吸水率、熱傳導係數、機械性質、吸音率和聲音穿透損失，並進行相互比較。由實驗結果可發現FIP試體孔徑大小、細胞壁厚，以及抗壓強度、抗彎強度和熱傳導係數是顯著受密度的影響。實驗結果也可發現，吸水率相對於密度的變化類似降噪係數。此外，進行測量有不同厚度和不同密度的FIP芯材之三明治層板的聲音穿透損失，以確定FIP芯材兩面貼上矽酸鈣板後，對能否增強降低噪音的影響。由實驗結果，泡沫無機聚合物（FIP）作為吸音和隔音材料的可行性可被評估。

A mixture of 70% metakaolin and 30% blast furnace slag powders is used as the raw material in the manufacture of foamed inorganic polymers (FIP), with various densities ranging from 0.4 to 1.0 g⁄cm^3 and different thicknesses of 6, 10 and 14 cm, using a mechanical foaming method. The microstructures of the metakaolin and slag powders, inorganic binder and FIP specimens are characterized by using XRD, FTIR and image analyses. The effects of stirring time, water/solid ratio and foaming agent on the properties of the inorganic binders are also evaluated. Moreover, the pore size distributions, water absorption, thermal properties, mechanical properties, sound absorption coefficients and sound transmission losses of the FIP specimens are obtained by conducting a series of measurements, and then compared with each other. Based on the experimental results, it is found that the measured cell length, cell wall thickness, compressive strength, flexural strength and coefficient of thermal conductivity of the FIP specimens are significantly affected by their density. The variation in water absorption with respect to density is similar to that of the noise reduction coefficient. In addition, the sound transmission losses of sandwich panels with different-thickness and various-density FIP cores were measured to determine if two faces of calcium silicate boards can enhance their noise reducing effects. As a result, the feasibility of using inorganic polymeric foam as a sound absorption and insulation material can be evaluated.

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