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膨胀蛭石/石膏复合保温材料的制备与表征

, PP. 156-161

Keywords: 膨胀蛭石,石膏,复合材料,节能材料,热性能,模压成型

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Abstract:

分别以微波法和微波化学法制备的膨胀蛭石为骨料,采用模压成型工艺制备了膨胀蛭石/石膏复合保温材料,研究了膨胀蛭石的片径、膨胀方法和熟石膏/膨胀蛭石的质量比(膏石比)与膨胀蛭石/石膏复合保温材料的含水率、导热系数和抗压强度的关系。结果表明:膨胀蛭石/石膏保温材料的导热系数和抗压强度随膨胀蛭石的片径的增大而减小,与膏石比呈二次函数关系,并随膏石比的增大而增大;在相同的实验条件下,采用微波化学法制备的膨胀蛭石制作的保温材料(导热系数为0.082W(m·K)-1)与以微波法制备的膨胀蛭石制作的保温材料(导热系数为0.097W(m·K)-1)相比,具有更好的保温性能。制备的复合保温材料可以用作隔热、吸声和湿度调节材料。

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