| Autor: |
M. F. Munoz-Velez, A. Valadez-Gonzalez, P. J. Herrera-Franco |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
eXPRESS Polymer Letters, Vol 11, Iss 9, Pp 704-718 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1788-618X |
| DOI: |
10.3144/expresspolymlett.2017.68 |
| Popis: |
Multiwall carbon nanotubes (MWCNTs) previously treated with a cationic polymer were incorporated on the surface of carbon fibers modified by three different chemical treatments, namely, oxidation, oxidation-silanization and oxidation-pre-impregnation. Prior to the incorporation of the MWCNTs, the physical surface properties of the fibers were studied by contact angle and the chemical surface properties by X-ray photoelectron spectroscopy (XPS). The interfacial shear strength (IFSS) of the different systems carbon fiber-MWCNTs-matrix was evaluated using the single-fiber fragmentation test (SFFT) and it was observed that the IFSS of the oxidized-pre-impregnated fibers, was considerably higher than that observed for the other fiber-matrix systems. This was attributed to enhanced interfacial interactions because the fiber surface treatments improved the wettability of the carbon fiber and the MWCNTs, which resulted in a better fiber-matrix mechanical interlocking and to the formation of covalent bonds between the different phases of the composite. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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