本文以工业废弃物粉煤灰为主要原料,在较低的成本下利用发泡注浆法制备了一种新型无机轻质多孔保温材料.为获得最佳材料组成配方和相关工艺参数,采用正交实验法L9(34)研究了固含量,原料配比,发泡剂用量和烧结温度对该保温材料性能的影响.研究结果表明:固含量对该保温材料的性能影响最大,烧结温度和发泡剂用量对其性能影响相对较小.在固含量为35wt％,粉煤灰掺加量为80wt％,废玻璃掺加量为1Swt％,粘土掺加量为5wt％,发泡剂用量为0.3wt％,烧结温度为950℃时,可以制得抗压强度为0.63MPa,导热系数为0.0597W/(m·K),气孔率为91.1％的新型轻质多孔保温材料.论文结果对粉煤灰的回收利用和建筑物的外墙保温有重要参考意义.
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