超轻,机械坚固,热绝缘和超疏水性电回旋基纳米纤维气凝
Li Niu1, Hui Wang2, Chang Liu2
1Shaanxi Academy of Environmental Sciences, No. 49 Chang'an North Road, Beilin District, Xi'an City, Shaanxi Province, 710061, China; College of Material Science and Engineering, Northeast Forestry University, No. 26, Hexing Road, Xiangfang District, Harbin City, Heilongjiang Province, 150040, China.
International journal of biological macromolecules
|November 12, 2025
概括
研究人员开发了超轻,超疏水的基于素的纳米纤维气凝 (LNFAs),具有出色的隔热和机械强度. 与羽毛相比,这些LNFAs表现出优越的保温特性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 生物材料是一种生物材料.
背景情况:
- 氨酸是一种可再生的生物聚合物,丰富但未得到充分利用.
- 开发具有优异绝热和机械性能的先进材料对于各种应用至关重要.
- 现有的绝缘材料通常在重量,耐用性或环境影响方面存在局限性.
研究的目的:
- 制造超轻,机械坚固,隔热和超疏水性素基纳米纤维气凝 (LNFAs).
- 为了研究红素含量和气凝结构对机械和热性质的影响.
- 评估LNFAs作为先进的保温材料的潜力.
主要方法:
- 使用素和聚乙烯醇 (PVA) 的电制造,制造基于素的纳米纤维 (LNF).
- 连续加工包括均质剪切,冷干燥,现场热交联和热化学蒸气沉积.
- 气凝结构,密度,孔径,压力强度,导热率和水接触角度的表征.
主要成果:
- 优化的LNFAs表现出超轻密度 (8.88 ± 0.13毫克·厘米-3),高孔隙性 (99.31 ± 0.01%) 和显著的压力强度 (4.91 ± 0.16kPa在60%的应变).
- 可调节的导热率在25.46±1.32到31.06±0.09 mW·m−1·K−1之间,显示出优异的隔热性能.
- 在水接触角度为150.4°时达到超性,在150个压缩周期后保持结构完整性.
结论:
- 基于素的纳米纤维气凝可以通过受控加工成功制造出具有可调节性质的气凝.
- 开发的LNFAs具有超轻量,机械强度,隔热和超性等独特的组合.
- 这些LNFAs显示承诺作为高性能,可持续的替代品,传统的保温材料,如羽毛.
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