Longitudinal alignment effect of graphene oxide nanoribbon on properties of polyimide-based carbon fibers

被引:8
作者
Kim, Junghwan [1 ]
Kim, Sungyong [1 ,2 ]
Heo, So Jeong [3 ]
Kim, Seo Gyun [1 ]
You, Nam-Ho [1 ]
Chae, Han Gi [3 ]
Kim, Hwan Chul [2 ]
Ku, Bon-Cheol [1 ,4 ]
机构
[1] Korea Inst Sci & Technol, Carbon Composite Mat Res Ctr, Wonju, South Korea
[2] Jeonbuk Natl Univ, Dept Organ Mat & Fiber Engn, Jeonju, South Korea
[3] UNIST, Dept Mat Sci & Engn, Ulsan 44919, South Korea
[4] Jeonbuk Natl Univ, Dept Nano Convergence, Jeonju 54896, South Korea
关键词
Polyimide nanocomposites; Graphene oxide nanoribbon; Carbon fiber; Mechanical properties; Conductivity; MECHANICAL-PROPERTIES; COMPOSITE FIBERS; HIGH-STRENGTH; FABRICATION; NANOCOMPOSITES; CARBONIZATION; NANOTUBES; NITROGEN; DAMAGE; VOIDS;
D O I
10.1016/j.carbon.2022.07.020
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Polyimide/graphene oxide nanoribbon (PI/GONR) composite fibers were prepared by wet spinning. The unfolded GONRs by the intense drawing of fibers maximized their contribution to enhance mechanical and conductivity properties. The composite fibers were spun with an optimal drawing ratio of 18, followed by carbonization at 1200 and 1400 degrees C, respectively. The PI/GONR (0.1 wt%) composite fibers carbonized at 1400 degrees C have the highest tensile strength (2.12 +/- 0.45 GPa), which was 35% increase compared to PI-based carbon fibers that are carbonized at 1400 degrees C. In addition, electrical (604 +/- 33 S/cm) and thermal conductivity (12 +/- 0.56 W/m.K) improved by 58% and 32%, compared to PI-based carbon fibers carbonized at 1400 degrees C. These values are comparable with 625 S/cm of electrical conductivity and 9.4 W/m.K of thermal conductivities of Toray carbon fiber (T700). Optimal drawing conditions can maximize orientation and packing density, resulting in maximum performance with a small amount of GONR (0.1 wt%). This significant improvement in macroscopic properties confirms wide possibilities for the manufacture of GONR composite fibers to acquire carbon fibers with excellent physical properties produced through the addition of GONR.
引用
收藏
页码:219 / 229
页数:11
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