坚固,稳定的冷却纤维素复合材料:在天然纤维素中合纳米-SiO和纤维素酸盐
Yinghao Bi1, Xiyao Luo1, Yuxin Yin1
1National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
International journal of biological macromolecules
|July 17, 2024
概括
这项研究开发了一种强大的纤维素复合材料,用于被动辐射冷却. 该材料表现出卓越的稳定性和冷却性能,为建筑物提供可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续技术 可持续技术
- 纳米技术纳米技术
背景情况:
- 基于纤维素的被动辐射冷却材料为环境提供了好处,但由于水和机械稳定性不佳而受到损害.
- 现有的材料难以耐用,限制了它们在建筑冷却中的实际应用.
研究的目的:
- 使用纤维素开发一种可扩展,坚固和稳定的被动辐射冷却材料.
- 为了提高纤维素-无机纳米粒子复合材料的耐用性,用于建筑应用.
主要方法:
- 通过使用造纸工艺整合纳米 (nano-SiO2) 和纤维素 (CA) 来制造纤维素复合物.
- 使用纤维素酸盐作为粘合剂,以改善纳米和纤维素纤维之间的粘合.
- 通过机械应力和长时间浸泡 (40天) 和环境暴露 (90天) 测试材料的强度.
主要成果:
- 开发的纤维素复合材料表现出卓越的机械和水稳定性.
- 在耐用性测试后,该材料保持了高太阳反射率 (>95%) 和红外辐射率 (>0.95).
- 在白天达到6.5°C,夜间达到8°C的显著下环境降温.
结论:
- 这种新型纤维素复合材料为被动辐射冷却提供了持久有效的解决方案.
- 该材料的稳定性和性能突出显示了其在低成本,环保的建筑冷却方面的潜力.
- 这一进步支持开发可持续的低碳冷却技术.
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