高品质的可再生碳纤维由造软木 kraft 宁生产,使用短稳定时间和超低碳化温度
Abdulrahman A B A Mohammed1, Isabel Coffman1, Xianglan Bai1
1Department of Mechanical Engineering, Iowa State University, Ames 50011, IA, USA.
International journal of biological macromolecules
|August 8, 2025
概括
研究人员开发了一种具有成本效益的方法来生产强大的基于素的碳纤维. 通过修改木质素和使用热力学化学,他们获得了具有改进的机械性能和缩短生产时间的可线纤维.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- 基于素的碳纤维看起来很有前途,但在机械性能和生产成本方面面临挑战.
- 高的玻璃过渡温度和长时间的稳定时间阻碍了素纤维的商业化.
- 开发具有成本效益和高性能的素碳纤维对于可持续材料应用至关重要.
研究的目的:
- 开发有效和环保的方法来生产商业上可行的基于素的碳纤维.
- 为了克服与融接,稳定性和素纤维机械性质相关的挑战.
- 为了降低生产成本并提高素碳纤维的拉伸性能.
主要方法:
- 使用水性轻生物油修改软木 kraft 质素,以提高融化可旋转性.
- 通过素修饰,将纤维稳定时间缩短到4小时.
- 在稳定和碳化过程中应用热力化学,以提高机械性能.
主要成果:
- 成功生产了可融线的宁纤维,稳定时间大大缩短.
- 通过在300°C稳定和在700°C碳化,达到2.08 GPa的抗拉强度和193 GPa的抗拉模量.
- 研究了受热机械化学影响的过程-性质-结构关系.
结论:
- 开发了生产绿色和低成本的基于素的碳纤维的实用方法.
- 热力机械化学显著改善了素碳纤维的拉伸性能.
- 该研究为市场所需的可持续碳纤维材料提供了一条途径.
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