纳克尔灵感的混合多层绝缘复合材料
Long Zhu1, Jongmin Shim2, Yulong Huang3
1Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States.
ACS applied materials & interfaces
|September 30, 2024
概括
纳克尔灵感的纤维素-氧气凝克服了超绝缘中的脆性问题. 这种新的设计增强了对环保建筑应用的机械强度和隔热性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 绿色建筑是一个绿色建筑.
背景情况:
- 气凝提供了很好的隔热,但其机械强度和脆性较低.
- 超绝缘材料的高孔度有助于它们的结构限制.
研究的目的:
- 提高气凝的机械性能和隔热性能.
- 开发一种以NACRE建筑为灵感的坚固且环保的绝热材料.
主要方法:
- 制造纳克拉灵感的多层纤维素-氧气凝复合材料.
- 热导率,机械强度 (弹性模量,冲击强度),疏水性,隔音和碳足迹的表征.
主要成果:
- 这种5+4层纤维素-氧气凝的导热率为31.3mW/m·K.
- 实现了505 MPa的屈曲模量和7.33 kJ/m2的冲击强度.
- 证明了疏水性 (127°水接触角度),27%的噪声降低,以及低碳足迹 (0.49kgCO2eq/kg).
结论:
- 纳克尔灵感的多层设计显著提高了气凝的机械性能.
- 开发的纤维素气凝是绿色建筑的有希望的可持续隔热解决方案.
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