用气凝修改的轻质活性材料的吸附和脱附同温
Halina Garbalińska1, Agata Stolarska1, Jarosław Strzałkowski1
1Department of Building Physics and Building Materials, Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, al. Piastów 17, 70-310 Szczecin, Poland.
Materials (Basel, Switzerland)
|March 27, 2025
概括
将气凝添加到活性材料中可以增加水分的吸收. 这些建筑材料中含有较高的气凝含量会导致所有测试湿度水平的水分吸收更大.
科学领域:
- 材料科学 材料科学 材料科学
- 建筑材料 建筑材料
- 有孔的材料有孔的材料
背景情况:
- 湿度含量对建筑材料的技术参数产生负面影响,特别是在空气凝复合材料等多孔材料中.
- 活性材料 (AAM) 是新一代建筑材料,具有改善性能的潜力.
- 了解湿度行为对于优化使用气凝的AAM的性能至关重要.
研究的目的:
- 为了研究不同含气凝含量的AAMs的水分吸附和脱吸特性.
- 为了比较动态蒸汽吸附 (DVS) 方法的有效性与传统的湿度测定方法.
- 量化添加气凝对AAMs.hygroscopic行为的影响.
主要方法:
- 制备了四种复合制剂:R0 (0%气凝) 和R1,R2,R3分别为10%,20%和30%的体积. 分别是气凝替换器.
- 动态蒸汽吸附 (DVS) 用于确定每个复合材料的10个湿度级别的吸附和脱吸等温度.
- 该研究评估了吸附和脱吸过程之间的歇斯底里尺度.
主要成果:
- 对于所有AAM-气凝复合材料,DVS方法准确地复制了所有AAM-气凝复合材料的和脱等温.
- 在R0 (无气凝) 和R1 (气凝含量最低) 复合材料中,歇斯底里症最为明显.
- 增加的气凝含量导致所有测试的相对湿度水平的水吸收显著增加.
结论:
- 在AAM中含有较高的气凝含量增加了它们的吸水能力.
- 复合物R3 (含有最高的气凝) 呈现出最高的吸水率,而R0 (不含气凝) 呈现出最低的吸水率.
- 这些发现为设计和利用建筑中的气凝修饰AAM提供了有价值的数据,考虑到它们与水分相关的性能.
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