MWCNT/Lyocell炭纤维的制备及其性能

鲁　江; 杨革生; 邵惠丽; 胡学超

MWCNT/Lyocell炭纤维的制备及其性能

1. 东华大学材料学院纤维材料改性国家重点实验室|上海 201620;

2.
湖北工业大学化学与环境工程学院|湖北武汉 430068

基金项目: 国家自然科学基金项目(50873024, 50673016), 863计划项目（2009AA03Z425）

详细信息

作者简介:
鲁　江（1971-）|男|湖北人|博士|主要从事纤维材料改性的研究. E-mail: ljlujiang@mail.dhu.edu.cn

通讯作者:
邵惠丽，教授，博士生导师

中图分类号: TQ 342⁺.742
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出版历程
- 收稿日期: 2011-03-30
- 录用日期: 2011-11-02
- 修回日期: 2011-10-05
- 刊出日期: 2011-10-20

Preparation and properties of MWCNT/Lyocell carbon fibers

1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering,

Dong hua University, Shanghai 200051, China;

Funds: National Natural Science Foundation of China (50873024, 50673016), Hi-Tech Research and Development Program of China (863) (2009AA03Z425).

More Information

Author Bio:
LU Jiang(1971-), male, Ph.D., engaging in research on the modification of fiber materials. 　　　　　　　　　　　　　　　　　　　　　E-mail: ljlujiang@mail.dhu.edu.cn

Corresponding author: SHAO Hui-li, Professor.

摘要

摘要: 为了提高Lyocell基炭纤维的得率及其力学性能，纺制了MWCNT/Lyocell纤维并以此为原丝制备了炭纤维。采用广角X-衍射（WAXD）、热失重分析（TGA）、扫描电镜（SEM）、强度仪等分析了试样的结构与性能。结果表明： MWCNT/Lyocell纤维具有纤维素II晶型的结构，纤维表面光滑且截面为圆形，符合优质炭纤维原丝的要求。以此为原丝所制炭纤维中，MWCNTs分布均匀；与纯Lyocell基炭纤维相比，掺杂MWCNTs的Lyocell基炭纤维的力学性能明显提高，其中，掺杂质量分数1% MWCNTs的Lyocell基炭纤维的强度和模量分别比纯Lyocell基炭纤维提高70%和116%。同时掺杂MWCNTs还可以提高Lyocell纤维的热稳定性，进而提高Lyocell基炭纤维的得率。
- MWCNT /
- Lyocell /
- 炭纤维 /
- 性能
Abstract: Multi-walled carbon nanotube (MWCNT)/Lyocell composite fibers were prepared and used as a precursor of carbon fibers to improve the mechanical properties of Lyocell-based carbon fibers. The structure and properties of the samples were investigated by wide angle XRD (WAXD), SEM, TGA and tensile tester. WAXD patterns showed that the composite precursor still had a cellulose II crystal structure. TGA curves showed that the thermal stability of the composite precursor was improved by the addition of the MWCNTs and the yield of the resulting carbon fibers could be increased. The SEM results showed that the surface and the cross-section of MWCNT/Lyocell composite fibers were smooth and round, which can meet the requirements of a carbon fiber precursor. MWCNTs were dispersed uniformly in the resulting carbon fibers. Compared with pure Lyocell-based carbon fibers, the tenacity and modulus of Lyocell-based composite carbon fibers containing 1% MWCNTs were increased by 70% and 116%, respectively.
- MWCNT /
- Lyocell /
- Carbon fiber /
- Property