再生纤维素气凝纤维具有轻量级和特殊的机械性能,用于隔热
Zhiyu Huang1,2, Binhao Wang2, Zhicheng Shi2
1College of Textiles and Clothing, Qingdao University, Qingdao, 266071, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|May 10, 2025
概括
研究人员从废弃织品中开发了一种新的再生纤维素气凝纤维. 这种可持续材料为先进的应用提供了卓越的机械强度和绝热.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
- 织工程 织工程 织工程
背景情况:
- 将基于纤维素的废织品 (CBWT) 回收成先进材料对于可持续发展至关重要.
- 现有的方法面临着对大规模织废物回收利用的效率和经济可行性的挑战.
研究的目的:
- 从CBWT开发一种高性能再生纤维素气凝纤维 (CAF).
- 为了提高产生的CAF的机械和热绝缘性能.
- 提高CBWT回收过程的效率和经济可行性.
主要方法:
- 使用了水浴湿和梯度溶剂交换的组合.
- 使用预热离子液体 (IL) /DMSO溶液系统来加速CBWT溶解.
- 制造的核心外结构的CAF纤维,没有草稿工艺.
主要成果:
- 获得了具有出色机械性能的CAF纤维:拉伸强度为16.56MPa,折裂时应变率为67.9%,性为6.65MJ/m3.
- 证明了出色的绝热性能 (39.31 mW/m/K),显著降低了传热.
- 通过预热IL/DMSO加速CBWT溶解过程,提高回收效率.
结论:
- 从废织品制造出高性能再生纤维素气凝纤维的简单有效方法.
- 开发的CAF对耐热和寒冷天气服装的应用非常有前途.
- 这项研究促进了织回收行业的发展和可持续的功能材料创新.
相关概念视频
Thermal Insulation in Masonry Walls
94
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
94
Fiber Reinforced Concrete
60
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
60
Cellulose and Pectic Polysaccharides
3.4K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.4K


