A Practical Approach for Validation of Aptitude of Sized Carbon Fibers for the In-Mould -Impregnation Process
American Journal of Mechanical and Materials Engineering
Volume 3, Issue 1, March 2019, Pages: 11-19
Received: Jan. 7, 2019; Accepted: Feb. 19, 2019; Published: Mar. 14, 2019
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Authors
Andre Ullmer, Institute of Polymer Technology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
Tobias Kleffel, Institute of Polymer Technology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
Zhanyu Zhai, Institute of Polymer Technology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
Tobias Mattner, Institute of Polymer Technology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
Dietmar Drummer, Institute of Polymer Technology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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Abstract
As a new and innovative processing method for carbon fiber reinforced thermoplastic composites, the In-Mould-Impregnation process (IMI) adopts carbon fibers as a heating element by electrical conduction. During heating of the dry carbon fibers in the production process, temperatures up to over 500°C can occur. However, the surface properties of carbon fibers and sizing may change under such conditions and thus affect the resulting composite. The present study is a practical approach to validate the suitability of sized carbon fibers for the IMI. The influence of a thermal treatment according to the parameters of the IMI-Process on carbon fiber-thermoplastic matrix interfacial adhesion was investigated by means of micromechanical and optical test methods. The experimental results demonstrate that the thermal treatment of carbon fibers causes a reduction of tensile strength of single fibers. It does not show an influence on the micromechanical breaking behavior in a PA 6 composite but the surface tension of carbon fibers changes. The change in surface tension can affect the wettability of the carbon fiber with a thermoplastic matrix.
Keywords
In-Mould-Impregnation, Interfacial Shear Strength, Single Fiber Fragmentation Test, Thermal Treatment, Fiber-Matrix Adhesion
To cite this article
Andre Ullmer, Tobias Kleffel, Zhanyu Zhai, Tobias Mattner, Dietmar Drummer, A Practical Approach for Validation of Aptitude of Sized Carbon Fibers for the In-Mould -Impregnation Process, American Journal of Mechanical and Materials Engineering. Vol. 3, No. 1, 2019, pp. 11-19. doi: 10.11648/j.ajmme.20190301.12
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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