R&D Division, Korea Institute of Carbon Convergence Technology, Jeonju 54853, South Korea; Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju 54896, South Korea.
R&D Division, Korea Institute of Carbon Convergence Technology, Jeonju 54853, South Korea.
J Environ Manage. 2017 Dec 1;203(Pt 3):872-879. doi: 10.1016/j.jenvman.2017.05.015. Epub 2017 May 12.
In order to manufacture high quality recycled carbon fibers (R-CFs), carbon fiber-reinforced composite wastes were pyrolysed with super-heated steam at 550 °C in a fixed bed reactor for varying reaction times. The mechanical and surface properties of the R-CFs were characterized with a single fiber tensile test, interface shear strength (IFSS), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The surface analysis showed that there was no matrix char residue on the fiber surfaces. The tensile strength and IFSS values of the R-CFs were 90% and 115% compared to those of virgin carbon fibers (V-CFs), respectively. The recycling efficiency of the R-CFs from the composites were strongly dependent on the pyrolysis temperature, reaction time, and super-heated steam feeding rate.
为了制造高质量的回收碳纤维（R-CFs），将碳纤维增强复合材料废物在固定床反应器中用过热蒸汽在 550°C 下进行热解，反应时间不同。通过单纤维拉伸试验、界面剪切强度（IFSS）、扫描电子显微镜（SEM）和 X 射线光电子能谱（XPS）对 R-CFs 的机械和表面性能进行了表征。表面分析表明，纤维表面没有基质炭残留物。与原始碳纤维（V-CFs）相比，R-CFs 的拉伸强度和 IFSS 值分别提高了 90%和 115%。复合材料中 R-CFs 的回收效率强烈依赖于热解温度、反应时间和过热蒸汽进料速率。
