4.3 Article

Influence of Oxyfluorination on Geometrical Pull-Out Behavior of Carbon-Fiber-Reinforced Epoxy Matrix Composites

期刊

MACROMOLECULAR RESEARCH
卷 26, 期 9, 页码 794-799

出版社

SPRINGER
DOI: 10.1007/s13233-018-6115-z

关键词

carbon fiber; polymer-matrix composites (PMCs); surface treatments; oxyfluorination

资金

  1. Leading Human Resource Training Program of Regional Neo industry through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and future Planning [NRF-2016H1D5A1909732]
  2. Technological Innovation R&D Program - Small and Medium Business Administration (SMBA, Korea) [S2475164]
  3. Korea Technology & Information Promotion Agency for SMEs (TIPA) [S2475164] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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To improve the interfacial adhesion between carbon fibers and an epoxy matrix, carbon fibers were modified by oxyfluorination at different temperature conditions. Surface analyses of the oxyfluorinated carbon fibers were performed using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and dynamic contact angle measurements. The interfacial shear strength (IFSS) of a single carbon fiber/epoxy matrix was studied by employing single-fiber pull-out tests to confirm the interfacial adhesion. The pull-out behavior of the fiber from the matrix was discussed based on the Greszczuk's geometrical model. Functional groups such as C-F, C-O, and COOH were present on the carbon fiber surfaces after oxyfluorination. Moreover, the presence of functional groups increased the surface polarity of the fibers, resulting in an increase in the IFSS owing to the improvement of the interfacial adhesive strength between the carbon fibers and the epoxy matrix.

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