用磁石聚合物保护水泥基复合材料的热性能的多方面的分析
Roman Jaskulski1, Krzysztof Liszka1, Daria Jóźwiak-Niedźwiedzka2
1Department of Civil Engineering, Wrocław University of Environmental and Life Sciences, 50-375 Wroclaw, Poland.
这项研究研究了不同磁石聚合物含量和颗粒大小的水泥复合材料的导热性. 较高的磁铁含量通常会增加导热率,特别是在干燥的标本中.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 建筑材料 建筑材料
背景情况:
- 水泥复合材料的热性能对于建筑能效至关重要.
- 磁石聚合物提供了在混凝土中提高热性能的潜力.
研究的目的:
- 为了评估各种磁铁聚合物含量的水泥复合材料的热性能.
- 为了确定磁石聚合物颗粒大小对导热性的影响.
- 分析不同湿度条件下的热行为 (完全和与干燥).
主要方法:
- 用0%,20%,40%和60%的磁铁聚合物在体积上制备水泥复合样本.
- 使用1 - 2毫米,2 - 4毫米,4 - 8毫米和8 - 16毫米的磁铁碎片对粒径效应的研究.
- 在完全和和干燥 (在65°C) 的条件下对样本进行热导率测量.
主要成果:
- 热导率在2.76~3.03W/m·K (和) 和2.00~2.21W/m·K (干燥) 之间,用于不同粒度.
- 20%的磁铁含量导致2.65W/m·K (和) 和1.99W/m·K (干燥).
- 60%的磁铁含量产生了3.47W/m·K (和) 和2.66W/m·K (干燥).
结论:
- 磁石聚合物的含量显著影响水泥复合材料的导热性.
- 更高的磁铁含量会导致导热率的增加,特别是在干燥状态下.
- 与聚合物含量相比,颗粒大小对热性能具有次要影响.
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