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5. Thermal and oxidation resistant barrier on carbon fiber with Si and Si–Ti based pre-ceramic coatings for high temperature application

Author

Shayed, Mohammad Abu, Hund, Heike, Hund, Rolf-Dieter, Cherif, Chokri, Shayed, Mohammad Abu, Hund, Heike, Hund, Rolf-Dieter, and Cherif, Chokri

Abstract

Carbon fiber (CF) must be protected from thermal oxidation for high temperature application because of its low thermo-oxidative stability above 450°C in air. CF is now increasingly being used as a reinforcing material in the construction industry. A thermal and oxidation resistant coating is necessary for CF-reinforced concrete (CFRC) composites in order to satisfy a high level of safety standard in the case of fire. New types of pre-ceramic coatings, such as Tyranno® polymer (Si–Ti based pre-ceramic) and SiO₂ sol–gel, have been deposited on CF filament yarn by means of a wet chemical continuous dip coating method. The results of surface analyses, e.g. scanning electron microscopy, X-ray photoelectron spectroscopy, and infrared spectroscopy, showed the changes in topographical properties of CF caused by the coatings. Thermogravimetric analysis proved that the high temperature (up to 800°C) oxidation stability of CF was considerably improved due to the coatings. Tensile test results indicated that the strength of CF yarn at 20°C was increased by up to 80% with the coatings. Thermo-mechanical properties were also enhanced up to 600°C. CF yarn retains its original strength and elasticity modulus, i.e. the stiffness at 700°C, with a Tyranno® polymer coating.

Published
2016

10. Silvering of Inert PET-Textile Materials by Means of One-Bath and Two-Bath Methods and their Characteristics.

Author

Onggar, Toty, Hund, Heike, Hund, Rolf-Dieter, and Cherif, Chokri

Subjects
TEXTILES, POLYETHYLENE terephthalate, SILVERING, METAL finishing, HYDROPHOBIC surfaces
Abstract

Copyright of Fibres & Textiles in Eastern Europe is the property of Sciendo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014

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