稳定形状的PEG化氧气凝复合材料作为节能建筑材料
Adeel Arshad1, Anurag Roy1, Tapas K Mallick1
1Solar Energy Research Group, Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, U.K.
概括
这项研究引入了一种新型智能绝缘复合材料,通过将聚乙烯糖醇 (PEG) 与气凝 (Si) 结合起来,以提高建筑物的能效. 该材料有效地减少了传热,同时保持了可见的透明度,为现代窗户提供了有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 建筑物理 建筑物理
- 纳米技术纳米技术
背景情况:
- 有效的建筑绝缘对于热舒适度和能源效率至关重要,尤其是在温度波动的情况下.
- 将聚乙烯糖醇 (PEG) 等相变材料 (PCM) 与气凝 (Siag) 等高性能绝缘体相结合,是一个有前途的战略.
- 将PCM集成到多孔绝缘体中可以创建先进的复合材料,以提高光热性能.
研究的目的:
- 通过PEGylating气凝 (Siag@PEG) 开发和描述一种新的智能绝缘复合材料.
- 评估Siag@PEG复合材料的光热性能和热性能,用于建筑外应用.
- 评估这种复合材料通过易于制造和可扩展性来提高建筑物的能效的潜力.
主要方法:
- 一种气凝和聚乙烯糖醇 (Siag@PEG) 复合材料的合成.
- 复合材料的可见透明度,近红外光阻塞和导热性的特征.
- 对温度依赖的湿度特征的研究.
- 作为一个原型窗户,对复合材料的热性能进行实验和计算评估.
主要成果:
- 优化的Siag@PEG复合材料 (5%PEG负载) 显示~92%的可见光传输.
- 与纯玻璃和PEG相比,观察到导热率显著下降约72%的显著下降.
- 复合材料在室外室内温度差异为20°C的情况下,室内温度降低了20%左右.
- 观察到可切换的疏水性到亲水性湿透性,取决于温度.
结论:
- 开发的Siag@PEG复合材料为建筑物中的智能绝缘提供了一个轻量级,可扩展的解决方案.
- 这种材料有效地平衡了保温和视觉透明度,提高了窗户的能源效率.
- 复合材料能够减少传热,并且很容易融入现有玻璃,这使得它成为装修建筑的可行选择.
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