| 膨胀蛭石/石膏复合保温材料的制备与表征 |
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| 引用本文： | 习永广,彭同江. 膨胀蛭石/石膏复合保温材料的制备与表征[J]. 复合材料学报, 2011, 28(5): 156-161 |
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| 作者姓名： | 习永广 彭同江 |
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| 作者单位： | 1.西南科技大学 材料科学与工程学院, 绵阳 621010; |
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| 基金项目： | “十一五”国家科技支撑计划项目(2008BAE60B07B);西南科技大学研究生创新基金(10ycjj12) |
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| 摘 要： | 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0.082 W(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0.097 W(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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| 关 键 词： | 膨胀蛭石 石膏 复合材料 节能材料 热性能 模压成型 |
| 收稿时间： | 2010-09-12 |
Preparation and characterization of expanded vermiculite/gypsum thermal insulation composites |
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| XI Yongguang,PENG Tongjiang. Preparation and characterization of expanded vermiculite/gypsum thermal insulation composites[J]. Acta Materiae Compositae Sinica, 2011, 28(5): 156-161 |
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| Authors: | XI Yongguang PENG Tongjiang |
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| Affiliation: | 1.School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;2.Institution of Mineral Material and Application, Southwest University of Science and Technology, Mianyang 621010, China |
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| Abstract: | The expanded vermiculite (EV)-gypsum thermal insulation composites were manufactured by compression moulding. The effects of flake diameter and preparation methods of expanded EV, mass ratio of EV to gypsum (Rm) on the thermal and mechanical properties of EV-gypsum composites were investigated. The results indicate that the thermal conductivity (λ) and compressive strength of the samples decrease with the increase of EV flake size, and increase as a quadratic function of rising Rm. The samples containing EV expanded by microwave chemical method present a better thermal insulation property (λ=0.082 W(m·K)-1) than that of the ones filled with microwave exfoliated EV (λ=0.097 W(m·K)-1). The EV-gypsum composites can play an important role in the fields of heat insulation, acoustic isolation and moisture adjustment. |
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