Effects of Supercritical Carbon Dioxide on Interfacial Properties of Carbon Fiber

Abstract:

In this paper , a new treatment method based on polyacrylonitrile (PAN) based carbon fiber treated by supercritical carbon dioxide (SCCO2) is proposed. This method aiming to obtain a controlled interface is green and pollutionless . The surface state of carbon fibers both untreated and treated on different temperature was studied by using SEM, AFM and XPS. The results show that SCCO2 can erode the surface of carbon fibers. Roughness of modified carbon fiber is higher than that of the untreated. Interfacial properties of the treated carbon fiber /epoxy microcomposites were improved. Interfacial shear strength (ILSS) of CFRP shows that treated carbon fiber /epoxy at a lower temperature can be increased by 17.35%, which means that an effect of optimized interface is obtained.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 2577-2584
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.2577
• Online since: June 2012
• Authors: Kui Liu*, Ling Hui Meng, Jing Cheng Zeng, Xue Bin Feng
• Keywords: Carbon Fiber (CF), Composite, Interfacial Adhesion, Supercritical Carbon Dioxide

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